Connie A Woodhouse

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Scholarly Contributions

Chapters

• Woodhouse, C. A. (2016). Using the past to plan for the future – The value of paleoclimate reconstructions for water resource planning. In Western Water Policy and Planning in a Variable and Changing Climate, Drought and Water Crises: Science, Technology, Management, and Policy Issues for the 21st Century.

Journals/Publications

• McClellan, C., Woodhouse, C. A., Sheppard, P. R., Guiterman, C., & Brice, R. (2020). Comparing tree-ring based reconstructions of snowpack variability at different scales. Climate Services.
• Woodhouse, C. A. (2021). Upper Colorado River Basin 20th century droughts under 21st century warming: Plausible scenarios for the future.. Climate Services.
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  Woodhouse, C.A., R.M. Smith, S.A. McAfee, G.T. Pederson, G.J. McCabe, W.P. Miller, A. Csank. 2021. Upper Colorado River Basin 20th century droughts under 21st century warming: Plausible scenarios for the future. Climate Services 21, https://doi.org/10.1016/j.cliser.2020.100206.
• Woodhouse, C. A., & Woodhouse, C. A. (2021). Tree rings and observations suggest no stable cycles in Sierra Nevada cool‐season precipitation. Water Resources Research.
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  Williams, A. P., K. J. Anchukaitis, C. A. Woodhouse, D. M. Meko, B. I. Cook, K. Bolles, E. R. Cook. 2020. Tree rings and observations suggest no stable cycles in Sierra Nevada cool‐season precipitation. Water Resources Research, https://doi.org/10.1029/2020WR028599
• Arizpe, A., Falk, D., Woodhouse, C. A., & Swetnam, T. (2018). Widespread fire years in the US-Mexico sky islands are contingent on both winter and monsoon precipitation. International Journal of Wildland Fire.
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  Arizpe, A., D.A. Falk, C.A. Woodhouse, T.W. Swetnam, submitted. Widespread fire years in the US-Mexico sky islands are contingent on both winter and monsoon precipitation. International Journal of Wildland Fire.
• Ferguson, D. B., Woodhouse, C. A., & Anderson, T. (2020). Upper Lake Mary: Lake Level Response to Climate Variability. CLIMAS Technical Report.
• Swetnam, T. W., Woodhouse, C. A., Falk, D. A., & Arizpe, A. H. (2020). Widespread fire years in the US-Mexico sky islands are contingent on both winter and monsoon precipitation. International Journal of Wildland Fire. doi:https://doi.org/10.1071/WF19181
• Woodhouse, C. A. (2019). A Multi-Century Perspective on the Relative Influence of Seasonal Precipitation on Streamflow in the Missouri River Headwaters. Water Resources Research..
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  Frederick, S.E. and C.A. Woodhouse. In revision. A Multi-Century Perspective on the Relative Influence of Seasonal Precipitation on Streamflow in the Missouri River Headwaters. Water Resources Research.
• Woodhouse, C. A. (2020). A long view of southern California water supply: perfect droughts revisited.. Journal of the American Water Resources Association..
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  Woodhouse, C.A., D.M. Meko, and E. Bigio. 2020. A long view of southern California water supply: perfect droughts revisited. Journal of the American Water Resources Association. 56, 212-229. https://doi.org/10.1111/1752-1688.12822
• Woodhouse, C. A. (2020). Basin wide hydro-climatic drought in the Colorado River basin.. Earth Interactions.
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  McCabe, G., D. Wolock, C.A. Woodhouse, G. Pederson, S. McAfee, S. Gray, A. Csank. 2020. Basin wide hydro-climatic drought in the Colorado River basin. Earth Interactions 24. 1–20. https://doi.org/10.1175/EI-D-20-0001.1
• Woodhouse, C. A. (2020). Dynamics, variability, and change in seasonal precipitation reconstructions for North America. Journal of Climate.
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  Stahle, D.W., E.R. Cook, D. J. Burnette, M. C.A. Torbenson, I. M. Howard, D. Griffin, J. Villanueva, B. I. Cook, P. A. Williams, E. Watson, D. Sauchyn, N. Pederson, C. A. Woodhouse, G. T. Pederson, D. Meko, B. Coulthard, C. J. Crawford. Accepted. Dynamics, variability, and change in seasonal precipitation reconstructions for North America. Journal of Climate
• Woodhouse, C. A. (2020). Flash droughts: High impact events that present a new challenge for subseasonal to seasonal prediction. Nature Climate Change.
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  Pendergrass, A.G., G.A. Meehl, R. Pulwarty, M. Hobbins, A. Hoell, A. AghaKouchak, C. J.W. Bonfils, A. J.E. Gallant, M. Hoerling, D. Hoffmann, L. Kaatz, F. Lehner, D. Llewellyn, P. Mote, R. Neale, J. T. Overpeck, A. Sheffield, K. Stahl, M. Svoboda, M.C. Wheeler, A. W. Wood, C. A. Woodhouse. In press. Flash droughts: High impact events that present a new challenge for subseasonal to seasonal prediction. Nature Climate Change.
• Woodhouse, C. A. (2020). Increased drought severity tracks warming in the United States’ largest river basin. Proceedings of the National Academies of Science (PNAS).
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  Martin, J.T., G.T. Pederson, C.A. Woodhouse and 16 co-authors. 2020. Increased drought severity tracks warming in the United States’ largest river basin. Proceedings of the National Academies of Science (PNAS), www.pnas.org/cgi/doi/10.1073/pnas.1916208117
• Woodhouse, C. A., & Woodhouse, C. A. (2020). The Changing relationship between the upper and lower Missouri River basins during drought.. International Journal of Climatology.
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  Woodhouse, C.A. and E.K. Wise. 2020. The Changing relationship between the upper and lower Missouri River basins during drought. International Journal of Climatology 1–18. doi.org/10.1002/joc.6502
• Woodhouse, C. A. (2019). 1200 years of Upper Missouri River streamflow reconstructed from tree rings.. Quaternary Science Reviews. doi:doi.org/10.1016/j.quascirev.2019.105971
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  Martin, J., Pederson, G.T., Woodhouse, C.A., Cook, E.R, McGuire, M., Broman, D., Lanini, J., et al. 2019. Quaternary Sci1200 years of Upper Missouri River streamflow reconstructed from tree rings. Quaternary Science Reviews, 224, 105971. doi.org/10.1016/j.quascirev.2019.105971
• Woodhouse, C. A. (2019). Streamflow Reconstruction in the Upper Missouri River Basin Using a Novel Bayesian Network Model.. Water Resources Research. doi:10.1029/2019WR024901
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  Ravindranath, A., N. Devineni, U. Lall, E.R. Cook, G. Pederson, J. Martin, C.A. Woodhouse. 2019. Streamflow Reconstruction in the Upper Missouri River Basin Using a Novel Bayesian Network Model. Water Resources Research. Doi: 10.1029/2019WR024901
• Woodhouse, C. A. (2020). A long view of southern California water supply: perfect droughts revisited.. Journal of the American Water Resources Association.. doi:DOI:10.1111/1752-1688.12822
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  Woodhouse, C.A., D.M. Meko, and E. Bigio. 2019. A long view of southern California water supply: perfect droughts revisited. Journal of the American Water Resources Association. DOI:10.1111/1752-1688.12822
• Woodhouse, C. A., & Pederson, G. T. (2018). Investigating runoff efficiency in upper Colorado river streamflow over past centuries.. Water Resources Research. doi:doi.org/10.1002/2017WR021663
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  Woodhouse, C. A. and G. T. Pederson, 2018. Investigating runoff efficiency in upper Colorado river streamflow over past centuries. Water Resources Research, 54, https://doi.org/10.1002/2017WR021663
• Woodhouse, C. A., & Rao, M. P. (2018). Six centuries of Upper Indus Basin streamflow variability and its climatic drivers.. Water Resources Research. doi:doi.org/10.1029/2018WR023080
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  Rao, M. P., Cook, E. R., Cook, B. I., Palmer, J. G., Uriarte, M., Devineni, N., Lall, U,. D'Arrigo, D., Woodhouse, C.A., Ahmed, M., Zafar, M.U., Khan, N., Khan, A., and Wahan, M. (2018). Six centuries of Upper Indus Basin streamflow variability and its climatic drivers. Water Resources Research, 54. https://doi.org/10.1029/2018WR023080
• Enquist, C., Jackson, S., Garfin, G. M., Davis, F. W., Gerber, L., Littell, J., Tank, J., Terando, A., Wall, T., Halpern, B., Hiers, J. K., Morelli, T. L., McNie, E., Stephenson, N. L., Williamson, M. A., Woodhouse, C. A., Yung, L., Brunson, M., Hall, K., , Hallett, L. M., et al. (2017). Foundations of Translational Ecology. Frontiers in Ecology and the Environment. doi:doi: 10.1002/fee.1733
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  Enquist, C.A.F, S.T. Jackson, G. M. Garfin, F.W. Davis, L.R. Gerber, J.A. Littell,J.L. Tank, A.J. Terando, T.U. Wall, B. Halpern, J.K. Hiers, T.L. Morelli, E. McNie, N.L. Stephenson, M.A. Williamson, C.A. Woodhouse, L. Yung, M.W. Brunson, K.R. Hall, L.M. Hallett, D.M. Lawson, M.A. Moritz, K. Nydick, A. Pairis, A.J. Ray, C. Regan, H.D. Safford, M.W. Schwartz, and M.R. Shaw. 2017. Foundations of translational ecology. Frontiers in Ecology and the Environment 15, 541–550, doi: 10.1002/fee.1733.
• Malevich, S. B., & Woodhouse, C. A. (2017). Pacific SSTs, mid-latitude atmospheric circulation, and widespread interannual anomalies in Western US streamflow.. Geophysical Research Letters. doi:doi: 10.1002/2017GL073536
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  Malevich, S.B. and C.A. Woodhouse. 2017. Pacific SSTs, mid-latitude atmospheric circulation, and widespread interannual anomalies in Western US streamflow. Geophysical Research Letters, doi: 10.1002/2017GL073536.
• McAfee, S. A., Pederson, G. T., Woodhouse, C. A., & McCabe, G. J. (2017). Application of synthetic scenarios to address water resource concerns: A management-guided case study from the Upper Colorado River Basin. Climate Services. doi:doi.org/10.1016/j.cliser.2017.10.003.
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  McAfee, S.A., G.T. Pederson, C.A. Woodhouse, G. J. McCabe. 2017. Application of synthetic scenarios to address water resource concerns: A management-guided case study from the Upper Colorado River Basin, Climate Services 8, 26-35, https://doi.org/10.1016/j.cliser.2017.10.003.
• McCabe, G. J., Wolock, D., Pederson, G. T., Woodhouse, C. A., & McAfee, S. A. (2017). Evidence that recent warming is reducing upper Colorado River Flows.. Earth Interactions. doi:doi:10.1175/EI-D-17-0007.1
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  McCabe, G., D. Wolock, G. Pederson, C. Woodhouse, and S. McAfee. 2017. Evidence that recent warming is reducing upper Colorado River Flows. Earth Interactions, 21, 1-14, doi:10.1175/EI-D-17-0007.1.
• Schwartz, M. W., Hiers, J. K., Davis, F. W., Garfin, G. M., Jackson, S., Terando, A. J., Woodhouse, C. A., Morelli, T. L., Williamson, M. A., & Brunson, M. W. (2016). Developing a translational ecology workforce. Frontiers in Ecology and the Environment. doi:doi: 10.1002/fee.1732
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  Schwartz, M.W., J.K. Hiers, F.W. Davis, G. M. Garfin, S.T Jackson, A.J. Terando, C.A. Woodhouse, T.L. Morelli, M.A. Williamson, M.W. Brunson. 2017. Developing a translational ecology workforce. Frontiers in Ecology and the Environment 15, 587–596, doi: 10.1002/fee.1732.
• Shaw, M. R., Schwartz, M. W., Safford, H. D., Regan, C., Ray, A. J., Pairis, A., Nydick, K., Moritz, M., Lawson, D. M., Hallett, L. M., Hall, K., Brunson, M., Yung, L., Woodhouse, C. A., Williamson, M. A., Stephenson, N. L., McNie, E., Morelli, T. L., Hiers, J. K., , Halpern, B., et al. (2017). Foundations of Translational Ecology. Frontiers in Ecology and the Environment, 15(10), 541-550. doi:doi: 10.1002/fee.1733
• Wise, E. K., Woodhouse, C. A., McCabe, G. J., Pederson, G. T., & St. Jacques, J. M. (2018). Hydroclimatology of the Missouri River basin. Journal of Hydrometeorology. doi:doi: 10.1175/JHM-D-17-0155.1
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  Wise, E.K., C.A. Woodhouse, G.J. McCabe, G.T. Pederson, and J-M. St. Jacques. 2018. Hydroclimatology of the Missouri River basin. Journal of Hydrometeorology, 19, 161-182, doi: 10.1175/JHM-D-17-0155.1
• Woodhouse, C. A. (2017). Assessing the Potential of Pinyon Pine for Climate Reconstructions in Eastern California.. Tree-Ring Research.
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  Wilding, T. and C.A. Woodhouse. 2017. Assessing the potential of pinyon pine for climate reconstructions in eastern California. Tree-Ring Research 73, 11-12.
• Woodhouse, C. A., & Woodhouse, C. A. (2017). Navigating translational ecology: creating opportunities for scientist participation.. Frontiers in Ecology and the Environment. doi:doi: 10.1002/fee.1734
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  Hallett, L.M, T.L. Morelli, L. R. Gerber, M.A. Moritz, M. W. Schwartz, N.L. Stephenson, J. L. Tank, M.A. Williamson, C. A. Woodhouse. 2017. Navigating translational ecology: creating opportunities for scientist participation. Frontiers in Ecology and the Environment 15, 578–586, doi: 10.1002/fee.1734.
• Woodhouse, C. A., Margolis, E. Q., & Swetnam, T. W. (2016). Drought, multi-seasonal climate and wildfire in northern New Mexico.. Climatic Change. doi:doi: 10.1007/s10584-017-1958-4.
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  Margolis, E. Q., C.A. Woodhouse, and T.W. Swetnam. 2017. Drought, multi-seasonal climate and wildfire in northern New Mexico. Climatic Change #, 1-14, doi: 10.1007/s10584-017-1958-4.
• Bracken, C., Rajagopalan, B., & Woodhouse, C. A. (2016). A Bayesian hierarchical nonhomogeneous hidden Markov model for multisite streamflow reconstructions. Water Resources Research. doi:doi:10.1002/2016WR018887
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  Bracken, C, B. Rajagopalan, C.A. Woodhouse. 2016. A Bayesian hierarchical nonhomogeneous hidden Markov model for multisite streamflow reconstructions, Water Resour. Res., 52, 7837–7850, doi:10.1002/2016WR018887.
• Woodhouse, C. A. (2016). Increasing influence of air temperature on upper Colorado River Streamflow.. Geophysical Research Letters.
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  Woodhouse, C.A., G.T. Pederson, K. Morino, S.A. McAfee, G.J. McCabe. 2016. Increasing influence of air temperature on upper Colorado River Streamflow. Geophysical Research Letters 43, doi:10.1002/2015GL067613.
• Woodhouse, C. A. (2016). Low frequency variability of the North American monsoon as diagnosed through earlywood and latewood tree-ring chronologies in the southwestern U.S.. International Journal of Climatology, 36, 2254–2272, doi:10.1002/joc.4493..
• Woodhouse, C. A. (2016). Teleconnected ocean forcing of western North American droughts and pluvials during the last millennium.. Quaternary Science Reviews.
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  Routson, C.C., C.A. Woodhouse, J.T. Overpeck, J.L. Betancourt, N.P. McKay. 2016. Teleconnected ocean forcing of western North American droughts and pluvials during the last millennium. Quaternary Science Reviews 146, 238-250. .doi.org/10.1016/j.quascirev.2016.06.017
• Woodhouse, C. A. (2016). Three millennia of southwestern North American dustiness and future implications.. PLOS One, doi: 10.1371/journal.pone.0149573..
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  Routson, C.C., J.T. Overpeck, C.A. Woodhouse, W.F. Kenney. 2016. Three millennia of southwestern North American dustiness and future implications. PLOS One, doi: 10.1371/journal.pone.0149573.
• Woodhouse, C. A., Littell, J. S., Pederson, G. T., Gray, S. T., Tjoelker, M., & Hamlet, A. F. (2016). Reconstructions of Columbia River streamflow from tree ring chronologies in the Pacific Northwest, USA. Journal of the American Water Resources Association. doi:doi: 10.1111/1752-1688.12442.
• Carrillo, C. M., Castro, C. L., Woodhouse, C. A., & Griffin, D. (2015). Low frequency variability of the North American monsoon as diagnosed through early and latewood tree-ring chronologies in the Southwest U.S.. International Journal of Climatology.
• Gangopadhyay, S., McCabe, G. J., & Woodhouse, C. A. (2015). Beyond annual streamflow reconstructions for the Upper Colorado River Basin: A paleo-water-balance approach. WATER RESOURCES RESEARCH, 51(12), 9763-9774.
• Woodhouse, C. A. (2015). Piñon pine (Pinus edulis Engelm.) growth responses to climate and substrate in southern Utah, U.S.A.. Plant Ecology. doi:10.1007/s11258-015-0478-4
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  Barger, N.N. and C.A. Woodhouse, 2015. Piñon pine (Pinus edulis Engelm.) growth responses to climate and substrate in southern Utah, U.S.A.. Plant Ecology DOI 10.1007/s11258-015-0478-4.
• Ault, T. R., Cole, J. E., Overpeck, J. T., Pederson, G. T., George, S. S., Otto-Bliesner, B., Woodhouse, C. A., & Deser, C. (2013). The Continuum of hydroclimate variability in Western North America during the last millennium. Journal of Climate, 26(16), 5863-5878.
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  Abstract: The distribution of climatic variance across the frequency spectrum has substantial importance for anticipating how climate will evolve in the future. Here power spectra and power laws (b) are estimated from instrumental, proxy, and climate model data to characterize the hydroclimate continuum in western North America (WNA). The significance of the estimates of spectral densities and b are tested against the null hypothesis that they reflect solely the effects of local (nonclimate) sources of autocorrelation at the monthly time scale. Although tree-ring-based hydroclimate reconstructions are generally consistent with this null hypothesis, values of b calculated from long moisture-sensitive chronologies (as opposed to reconstructions) and other types of hydroclimate proxies exceed null expectations. Therefore it may be argued that there is more low-frequency variability in hydroclimate than monthly autocorrelation alone can generate. Coupled model results archived as part of phase 5 of the Coupled Model Intercomparison Project (CMIP5) are consistent with the null hypothesis and appear unable to generate variance in hydroclimate commensurate with paleoclimate records. Consequently, at decadal-to-multidecadal time scales there is more variability in instrumental and proxy data than in the models, suggesting that the risk of prolonged droughts under climate change may be underestimated by CMIP5 simulations of the future. © 2013 American Meteorological Society.
• Griffin, D., Woodhouse, C. A., Meko, D. M., Stahle, D. W., Faulstich, H. L., Carrillo, C., Touchan, R., Castro, C. L., & Leavitt, S. W. (2013). North American monsoon precipitation reconstructed from tree-ring latewood. Geophysical Research Letters, 40(5), 954-958.
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  Abstract: The North American monsoon is a major focus of modern and paleoclimate research, but relatively little is known about interannual- to decadal-scale monsoon moisture variability in the pre-instrumental era. This study draws from a new network of subannual tree-ring latewood width chronologies and presents a 470-year reconstruction of monsoon (June-August) standardized precipitation for southwestern North America. Comparison with an independent reconstruction of cool-season (October-April) standardized precipitation indicates that southwestern decadal droughts of the last five centuries were characterized not only by cool-season precipitation deficits but also by concurrent failure of the summer monsoon. Monsoon drought events identified in the past were more severe and persistent than any of the instrumental era. The relationship between winter and summer precipitation is weak, at best, and not time stable. Years with opposing-sign seasonal precipitation anomalies, as noted by other studies, were anomalously frequent during the mid to late 20th century. © 2013. American Geophysical Union. All Rights Reserved.
• Woodhouse, C. A. (2013). . Tree-ring reconstructed hydroclimate of the Upper Klamath basin. Journal of Hydrology. Journal of Hydrology.
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  Malevich, S.B., C.A. Woodhouse, D.M. Meko. 2013. Tree-ring reconstructed hydroclimate of the Upper Klamath basin. Journal of Hydrology, doi.org/10.1016/j.jhydrol.2013.04.048
• Woodhouse, C. A. (2013). A paleoclimate regime of concurrent cool-season and monsoon drought in the Southwest.. Geophysical Research Letters.
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  Griffin, D., C.A. Woodhouse, D.M. Meko, D.W. Stahle, H.L. Faultich, C. Carillo, R. Touchan, C.L. Castro, S.W. Leavitt. 2013. A paleoclimate regime of concurrent cool-season and monsoon drought in the Southwest. Geophysical Research Letters 40, 1-5. doi:10.1002/grl.50184
• Woodhouse, C. A. (2013). The continuum of drought variability in western North America: insights from instrumental, paleoclimate and global climate model data. Journal of Climate.
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  Ault, T.R., J.E. Cole, J.T. Overpeck, G.T. Pederson, S. St. George, B. Otto-Bliesner, C.A. Woodhouse, and C. Deser. 2013. The continuum of drought variability in western North America: insights from instrumental, paleoclimate and global climate model data. Journal of Climate 26, 5863-5878. DOI: 10.1175/JCLI-D-11-00732.1
• Woodhouse, C. A. (2013). Tree Rings reveal multi-season drought variability in the lower Rio Grande basin, USA. Water Resources Research.
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  Woodhouse, C.A., D.M. Meko, D. Griffin, and C.L. Castro. 2013. Tree Rings reveal multi-season drought variability in the lower Rio Grande basin, USA. Water Resources Research 49, 1-7. doi:10.1002/wrcr.20098.
• Woodhouse, C. A., & Woodhouse, C. A. (2013). Dominant patterns of U.S. warm season precipitation variability in a fine resolution observational record, with focus on the Southwest.. International Journal of Climatology.
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  Ciancarelli, B., C.L. Castro, C.A. Woodhouse, F. Dominguez, H-I. Chang, C. Carrillo, and D. Griffin.2013. Dominant patterns of U.S. warm season precipitation variability in a fine resolution observational record, with focus on the Southwest. International Journal of Climatology, doi: 10.1002/joc.3716.
• Woodhouse, C. A., & Woodhouse, C. A. (2013). Sierra San Pedro Mártir, Baja California, cool-season precipitation reconstructed from earlywood width of Abies concolor tree rings. Journal of Geophysical Research: Biogeosciences.
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  Meko, D.M., , R. Touchan, J. Villanueva Diaz, Griffin, D., C.A. Woodhouse, C.L. Castro, C. Carillo, S.W. Leavitt. 2013, Sierra San Pedro Mártir, Baja California, cool-season precipitation reconstructed from earlywood width of Abies concolor tree rings. Journal of Geophysical Research: Biogeosciences, 118, 1-14, doi: 10.1002/2013JG002408.
• Woodhouse, C. A. (2012). Impacts of climate gradients on the vegetation phenology of major land use types in Central Asia (1981-2008).. Frontiers of Earth Science. doi:doi 10.1007/s11707-012-0315-1
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  Full Citation: Kariyeva, J., W.D.J. van Leeuwen, and C.A. Woodhouse. 2012. Impacts of climate gradients on the vegetation phenology of major land use types in Central Asia (1981-2008). Frontiers of Earth Science 6, 206-225, doi 10.1007/s11707-012-0315-1.;
• Woodhouse, C. A. (2012). Rio Grande and Rio Conchos Water Supply Variability from Instrumental and Paleoclimatic Records.
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  ;Full Citation: Woodhouse, C.A., D.W. Stahle, and J. Villanueva-DĂ­az. 2012. Rio Grande and Rio Conchos Water Supply Variability from Instrumental and Paleoclimatic Records. Climate Research.51, 125-136. doi: 10.3354/cr01059.;
• Woodhouse, C. A. (2012). Temperature as a potent driver of regional forest drought stress and tree mortality..
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  ;Full Citation: Williams, A.P., C. D. Allen, A. K. Macalady, D. Griffin, C. A. Woodhouse, D. M. Meko, T. W. Swetnam, S. A. Rauscher, R. Seager, H. D. Grissino-Mayer, J. S. Dean, E. R. Cook, C. Gangodagamage, M. Cai, N. G. McDowell, 2012. Temperature as a potent driver of regional forest drought stress and tree mortality. Nature Climate Change, DOI: 10.1038/NCLIMATE1693.;
• Woodhouse, C. A., & Woodhouse, C. A. (2012). Reconstructed cool- and warm-season precipitation over the tribal lands of northeastern Arizona..
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  ;Full Citation: Faulstich, H.L., C.A. Woodhouse, and R. Griffin. 2012. Reconstructed cool- and warm-season precipitation over the tribal lands of northeastern Arizona. Climatic Change, DOI 10.1007/s10584-012-0626-y.;
• Griffin, D., Meko, D. M., Touchan, R., Leavitt, S. W., & Woodhouse, C. A. (2011). Latewood chronology development for summer-moisture reconstruction in the US Southwest. Tree-Ring Research, 67(2), 87-101.
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  Abstract: Tree-ring studies have demonstrated that conifer latewood measurements contain information on long-term North American monsoon (NAM) variability, a hydroclimatic feature of great importance to plants, animals, and human society in the US Southwest. This paper explores data-treatment options for developing latewood chronologies aimed at NAM reconstruction. Archived wood samples for five Douglas-fir (Pseudotsuga menziesii, Mirb. Franco) sites in southeastern Arizona are augmented with new collections. The combined dataset is analyzed along with time series of regionally averaged observed precipitation to quantify the strength of regional precipitation signal in latewood time series and to identify ways of increasing the signal strength. Analysis addresses the signal strength influences of including or excluding "false" latewood bands in the nominal "latewood" portion of the ring, the necessary adjustment of latewood width for statistical dependence on antecedent earlywood width, and tree age. Results suggest that adjusted latewood width chronologies from individual sites can explain around 30% of the variance of regional summer (July-August) precipitation - increasing to more than 50% with use of multiple chronologies. This assessment is fairly insensitive to the treatment of false latewood bands (in intra-annual width and δ 13C variables), and to whether latewood-width is adjusted for dependence on earlywood-width at the core or site level. Considerations for operational chronology development in future studies are (1) large tree-to-tree differences in moisture signal, (2) occasional nonlinearity in EW-LW dependence, and (3) extremely narrow and invariant latewood width in outer portions of some cores. A protocol for chronology development addressing these considerations is suggested. © 2011 The Tree-Ring Society.

Presentations

• Woodhouse, C. A. (2019, fall). Practicing Collaborative Research. Healthy Forests, Healthy Watersheds Workshop, University of Arizona.
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  Woodhouse, C.A. 2019. Practicing Collaborative Research. Healthy Forests, Healthy Watersheds Workshop, University of Arizona, Tucson, AZ, November 14, 2019 (invited)
• Woodhouse, C. A. (2019, fall). The Role of Dendrochronology in the 21st Century: Lessons Learned from Water Managers. Laboratory of Tree-Ring Research Brown Bag Seminar, University of Arizona.
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  Woodhouse, C.A. 2019. The Role of Dendrochronology in the 21st Century: Lessons Learned from Water Managers. Laboratory of Tree-Ring Research Brown Bag Seminar, University of Arizona, November 6, 2019
• Woodhouse, C. A. (2019, spring). Missouri River Hydroclimatology Overview. Improving Sub-Seasonal to Seasonal (S2S) Precipitation Forecasting, Western States Water Council and California Department of Water Resources, San Diego CA.
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  Woodhouse, C.A. 2019. Missouri River Hydroclimatology Overview. Improving Sub-Seasonal to Seasonal (S2S) Precipitation Forecasting, Western States Water Council and California Department of Water Resources, San Diego CA, May 22-24, 2019 (invited)
• Woodhouse, C. A. (2018, NA). Colorado River Runoff Efficiency from Tree Rings. Laboratory of Tree-Ring Research, Brown Bag Seminar Series. University of Arizona: Laboratory of Tree-Ring Research.
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  Woodhouse, C.A., 2018. Colorado River Runoff Efficiency from Tree Rings. Laboratory of Tree-Ring Research, Brown Bag Seminar Series, University of Arizona, March 14, 2018.
• Woodhouse, C. A. (2018, NA). Runoff efficiency: The impact of warming temperatures on Colorado River drought.. CLIMAS Colloquium Series. University of Arizona: CLIMAS.
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  Woodhouse, C.A. 2018. Runoff efficiency: The impact of warming temperatures on Colorado River drought. CLIMAS Colloquium, University of Arizona, Jan 26, 2018.
• Woodhouse, C. A. (2018, NA). The Effects of Temperature on Colorado River Drought over Past Centuries Inferred from a Runoff Efficiency Reconstruction. When the Rain Stops: Drought on Subseasonal and Longer Timescales. Aspen, CO: Aspen Global Change Institute.
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  Woodhouse, C.A. 2018. The Effects of Temperature on Colorado River Drought over Past Centuries Inferred from a Runoff Efficiency Reconstruction. When the Rain Stops: Drought on Subseasonal and Longer Timescales, Aspen Global Change Institute, Aspen CO, September 9-14, 2018
• Woodhouse, C. A. (2018, NA). The Role of Dendrochronology in the 21st Century: Lessons Learned from Water Managers. 10th World Dendrochronology Conference. Thimphu, Bhutan: Tree-Ring Society, Government of Bhutan.
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  Woodhouse, C.A. 2018. The Role of Dendrochronology in the 21st Century: Lessons Learned from Water Managers. Plenary, 10th World Dendro Conference, Thimphu, Bhutan, June 10-15, 2018
• Woodhouse, C. A. (2018, NA). Using Tree Rings to Inform Water Resource Management.. California Extreme Precipitation Symposium. Davis, CA: University of California.
  More info

  Woodhouse, C.A. 2018. Using Tree Rings to Inform Water Resource Management. 2018 California Extreme Precipitation Symposium, University of California, Davis, CA, July 9, 2018(was not able to attend at the last minute; presentation given by colleague)
• Woodhouse, C. A., Meko, D., & Bigio, E. (2018, NA). Southern California Perfect Drought: How Common?. 10th World Dendrochronology Conference. Thimpu, Bhutan: Tree-Ring Society, government of Bhutan.
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  Woodhouse, C.A. 2018. Southern California Perfect Drought: How Common? 10th World Dendro Conference, Thimphu, Bhutan, June 10-15, 2018
• Woodhouse, C. A., Pederson, G. T., McAfee, S., McCabe, G. C., & Morino, K. (2018, NA). Colorado River Runoff Efficiency: Placing the Instrumental Record in a Long-Term Context. Surviving Peak Drought and Temperature Workshop. Tucson, AZ: University of Arizona.
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  Woodhouse, C.A., G.T. Pederson, S. McAfee, G. McCabe, and K. Morino. 2018. Colorado River Runoff Efficiency: Placing the Instrumental Record in a Long-Term Context. Surviving Peak Drought and Temperature Workshop, University of Arizona, March 29-30, 2018
• Swetnam, T. W., Falk, D. A., Williams, A. P., Woodhouse, C. A., Margolis, E. Q., & Guiterman, C. H. (2017, November). Variability in tree-growth response to climate across dry conifer forests of the Navajo Nation. Society of American Foresters Annual Meeting. Albuquerque, NM: Society of American Foresters.
• Woodhouse, C. A. (2014, October). Making the Connection between Quaternary Science and Decision Making. 2017 Geological Society of America Annual Meeting, Seattle, WA, Oct 22-25, 2017.
• Woodhouse, C. A. (2017, April). Past Streamflow from Tree Rings: From Implications to Applications. Department of Geography University of Utah seminar series.
• Woodhouse, C. A. (2017, April). Tree Rings and Drought with Applications to Water Resource Management in the Western US. University of Minnesota, Brown Day Talk.
• Woodhouse, C. A., Frederick, S., Pederson, G., & Wise, E. (2017, April). Spatial and Temporal Variability in Upper Missouri River Basin Droughts and Pluvials. Association of American Geographers Conference.
• Arizpe, A., Falk, D. A., Swetnam, T., & Woodhouse, C. A. (2016, November). Widespread Fire Years in Conifer Forests are Contingent on Both Winter and Monsoon Precipitation in the US-Mexico Sky Islands. AFE Southwest Conference. Tucson, AZ: Association for Fire Ecology (AFE).
• Woodhouse, C. A. (2016, March). Effects of Climate on Colorado River Flow: Perspectives from the Past, Present, and Future. Laboratory of Tree-Ring Research Seminar Series, University of Arizona.
• Woodhouse, C. A. (2016, November). Disentangling the Influence of Temperature and Antecedent Soil Moisture on Colorado River Water Resources – An Update. Salt River Project research workshop.
• Woodhouse, C. A. (2019, spring). Tree-ring reconstructions of Colorado River streamflow: Drought and Implications for Power Generation. Centre for Energy Advancement through Technological Innovation International, Hydropower Conference, Tucson AZ.
  More info

  Woodhouse, C.A. 2019. Tree-ring reconstructions of Colorado River streamflow: Drought and Implications for Power Generation. Centre for Energy Advancement through Technological Innovation International, Hydropower Conference, Tucson AZ, March 20, 2019 (invited)
• Woodhouse, C. A. (2015, Apr). Drought Planning: The Long-Term Context.. U.S. Drought Monitor Forum, Desert Research Institute, Western Regional Climate Center, April 14-16, 2015..
• Woodhouse, C. A. (2015, Apr). Paleodroughts: Analogues for the Future?. New Mexico Geological Society Annual Meeting, Socorro, New Mexico, April 24, 2015..
• Woodhouse, C. A. (2015, Jan). Connecting Environmental Science and Decision Making (CESD) – a Graduate Certificate Program.. Regional Integrated Sciences and Assessment PI Meeting, Charleston, SC. Jan 15-17, 2015..
• Woodhouse, C. A. (2015, Jul). The Role of Temperature (and soil moisture) in Mediating Relationships between Cool Season Precipitation and Water Year Streamflow in the UCRB. Denver Water Board, Denver, CO, July 21, 2015; and Colorado River District brown bag talk, Glenwood Springs, CO, July 23, 2015..
• Woodhouse, C. A. (2015, Jul). Tree Rings and Drought with Applications to Water Resource Management in the Western US. National Center for Atmospheric Research (NCAR), Invited speaker series, Boulder, CO, July 14, 2015.
• Woodhouse, C. A. (2015, Jun). Some Practical Guidelines for Science/Decision-Making Collaborations.. 2015 UCOWR/NIWR/CUAHSI Annual Conference, Henderson, NV, June 16-18, 2015.
• Woodhouse, C. A. (2015, Mar). Investigating the role of temperature in mediating relationships between cool season precipitation and water year streamflow in the Upper Colorado River basin.. Pacific Climate (PACLIM) Meeting, Pacific Grove, CA, March 8-11, 2015..
• Woodhouse, C. A. (2015, Oct). Use-Inspired Hydroclimatic Research in the Upper Colorado River Basin. Biennial Conference of Science & Management on the Colorado Plateau & Southwest Region, Flagstaff, AZ, October 6, 2015..
• Woodhouse, C. A. (2015, sept). Disentangling the Influence of Temperature and Antecedent Soil Moisture on Colorado River Water Resources. Water Manager Project Advisory Board workshop, Denver Federal Center, Denver, CO, Sept. 17, 2015.
• Brice, R., Woodhouse, C. A., Crimmins, M. A., Brice, R., Woodhouse, C. A., Crimmins, M. A., Brice, R., Woodhouse, C. A., & Crimmins, M. A. (2014, September). Understanding sub-annual tree-ring climate records and the impacts of climate extremes in the Four Corners region, USA. Association of Pacific Coast Geographers Meeting. Tucson, AZ: University of Arizona School of Geography and Development.
  More info

  In the Four Corners region of the American Southwest inter-seasonal variations in duration, intensity and timing of precipitation and temperature are important to cultural and agricultural activities. Annual precipitation totals may often obscure intra-seasonal spatial and temporal moisture variability, masking the dominant features of droughts and drought impacts to tribes in the region. Because instrumental climate data are limited, we explore the potential for earlywood and latewood tree-ring measurements in Psuedotsuga menziesii and Pinus ponderosa to serve as drought impact recorders of long-term drought and climate variability in this region. First, we examine relationships between tree rings and indices of climate extremes in precipitation and temperature from the World Meteorological Organization. Second, focusing on specific seasons and climate variables most likely to contribute to the severity of drought impacts, we explore the possibility to reconstruct these seasonal climate conditions prior to the instrumental record. Finally, we investigate the correspondence between synoptic scale climate dynamics operating on inter-annual to decadal time scales and specific droughts. If tree-ring measurements can be used as a proxy for drought impacts, reflecting combinations of seasonal elements of drought, then reconstructions can document impacts during periods of drought in the Four Corners over past centuries.
• Woodhouse, C. A. (2014, April). Droughts in a Long-Term Context: The Tree-Ring Perspective.. 40th Annual Great Plains Symposium.
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  Woodhouse, C.A. Great Plains Droughts in a Long-Term Context: The Tree-Ring Perspective. 40th Annual Great Plains Symposium, Lincoln, NE. April 1-4, 2014.*
• Woodhouse, C. A. (2014, April). Three-Season Hydroclimatic Variability from Tree Rings in the Four Corners Region, USA.. AAG Annual Meeting.
  More info

  Woodhouse, C.A., R.L. Brice, M.A. Crimmins, H.L Faulstich, D. Griffin, D.B. Ferguson, A.M. Meadow. Three-Season Hydroclimatic Variability from Tree Rings in the Four Corners Region, USA. AAG Annual Meeting, Tampa, FL, April 12, 2014.
• Woodhouse, C. A. (2014, August). Tree-ring reconstruction of the Klamath River.. American Quaternary Association (AMQUA) 23rd Biennial Meeting.
  More info

  Woodhouse, C.A., S.B. Malevich, D.M. Meko, and S. Gangopadhyay. Tree-ring reconstruction of the Klamath River. AMQUA 23rd Biennial Meeting, Seattle, WA. August 7-9, 2014
• Woodhouse, C. A. (2014, December). Evaluating the Influence of Precipitation, Temperature, and Soil Moisture on Upper Colorado River Basin Streamflow and Drought.. American Geophysical Union Annual meeting.
  More info

  Woodhouse, C.A., S. McAfee, G. McCabe, P. Miller, G. Pederson. Evaluating the Influence of Precipitation, Temperature, and Soil Moisture on Upper Colorado River Basin Streamflow and Drought. H31M-07. American Geophysical Union, San Francisco, CA, Dec. 15-19, 2014.
• Woodhouse, C. A. (2014, Sept). Collaborative Research on Upper Colorado River Basin Streamflow and Drought.. Association of Pacific Coast Geographers meeting.
  More info

  Woodhouse, C.A. Collaborative Research on Upper Colorado River Basin Streamflow and Drought. Association of Pacific Coast Geographers meeting, Tucson, AZ. Sept. 24-27, 2014.
• Woodhouse, C. A., Brice, R., Crimmins, M. A., Griffin, D., Faulstich, H., & Ferguson, D. B. (2014, April). Three-Season Hydroclimatic Variability from Tree Rings in the Four Corners Region, USA. Association of American Geographers Annual Meeting. Tampa, FL: Association of American Geographers.
  More info

  The seasonal precipitation regime of the Four Corners region of the southwestern US includes a winter wet season and a summer monsoon. The two precipitation seasons are broken by a typically dry fore-summer that precedes the onset of the monsoon in early July. Dryland agriculture and grazing are practiced on tribal lands here; conditions over these three seasons are highly influential to the success of crops and rangeland conditions. Recent decades have been characterized by repeated intervals of severe drought in one or both of the two precipitation seasons, occasionally alleviated by wet fore-summer conditions. The instrumental record provides a subset of the climate conditions possible under natural variability. Tree-ring based reconstructions of cool-season and monsoon precipitation for past centuries have been generated for this region, providing a long-term perspective on the range of drought conditions possible. Here, we investigate the potential for reconstructing conditions in the pre-monsoon season, using not only precipitation totals, but hydroclimatic indices such as number of wet days and length of dry spells. By employing two species of conifers, Douglas-fir (Pseudotsuga menziesii) and ponderosa pine (Pinus ponderosa), and chronologies generated from intra-annual ring widths, we take advantage of the range of climate sensitivities in the two species and earlywood and latewood growth. With a preliminary reconstruction, we evaluate seasonal sequences that occur most commonly, variations in sequences over time, and periods of persistent dry conditions in all three of these seasons that are so critical to tribal livelihoods and natural resources in this region.
• Woodhouse, C. A. (2013, February). Tree Rings: What can the past tell us about future climate?. Arizona/NASA Space Grant Consortium noon talk series.
  More info

  “Tree Rings: What can the past tell us about future climate?” Arizona/NASA Space Grant Consortium noon talk, Feb. 22, 2013
• Woodhouse, C. A. (2013, June). Linking Tree-Ring Research and Resource Management through Collaboration.. Ameridendro Conference.
  More info

  Woodhouse, C.A., D. Ferguson, J.J Lukas, J.L. Rice. Linking Tree-Ring Research and Resource Management through Collaboration. Ameridendro Conference, Tucson, AZ, May 13-17, 2013, Keynote
• Woodhouse, C. A. (2013, March). Tree Rings and their Role in Water Resources Decision-Making. School of Natural Resources and Environment Seminar Series.
  More info

  “Tree Rings and their Role in Water Resources Decision-Making.” School of Natural Resources and Environment Seminar Series, University of Arizona, March 20, 2013.
• Woodhouse, C. A. (2013, NA). A Paleoclimatic Perspective on Water Resource Vulnerability in the Western US. ACCWW Symposium Lamont Doherty Earth Observatory.
  More info

  Woodhouse, C.A.. A Paleoclimatic Perspective on Water Resource Vulnerability in the Western US. ACCWW Symposium Lamont Doherty Earth Observatory, May 19-23, 2013.*invited
• Woodhouse, C. A. (2013, NA). Klamath River Streamflow Reconstructed from Tree Rings: Extracting Meaningful Information from Imperfect Data. Pacific Northwest Climate Science Conference.
  More info

  Woodhouse, C.A., S.B. Malevich, D.M. Meko, and S. Gangopadhyay. Klamath River Streamflow Reconstructed from Tree Rings: Extracting Meaningful Information from Imperfect Data. Pacific Northwest Climate Science Conference, Portland, OR, Sept. 5-6, 2013
• Woodhouse, C. A. (2013, November). Lessons from the Past: Tree Rings, Drought, and Water Resources. Burack Distinguished Lecture Series.
  More info

  “Lessons from the Past: Tree Rings, Drought, and Water Resources.” Burack Distinguished Lecture Series, University of Vermont, November 14, 2013.
• Woodhouse, C. A. (2012, 2013-03-01). A Perspective on the Challenges and Opportunities in the Hydrologic Sciences.
  More info

  Woodhouse, C.A., A Perspective on the Challenges and Opportunities in the Hydrologic Sciences. Panel, The Future of Hydrological Sciences: Arizona and Beyond, 2012 AHS Annual Water Symposium September 18-21, 2012;Invited: Yes;Type of Presentation: Invited/Plenary Speaker;
• Woodhouse, C. A. (2012, 2013-03-01). From Monsoon to Snowpack: Hydroclimatic Variability in Western North America from Tree Rings.
  More info

  Woodhouse, C.A., D. Griffin, and G. Pederson. From Monsoon to Snowpack: Hydroclimatic Variability in Western North America from Tree Rings. American Quaternary Association (AMQUA) Biennial Meeting, Duluth, MN, June 21-24, 2012;Invited: Yes;Type of Presentation: Academic Conference;
• Woodhouse, C. A. (2012, 2013-03-01). How Can Paleoenvironmental Data Inform Adaptation? Tree Rings, Drought, and Water Resources.
  More info

  Woodhouse, C.A. How Can Paleoenvironmental Data Inform Adaptation? Tree Rings, Drought, and Water Resources. Adaptation Futures: 2012 International Conference on Climate Adaptations, Tucson, AZ, May 29-31, 2012.;Submitted: Yes;Type of Presentation: Government/Policy Audiences;
• Woodhouse, C. A. (2012, 2013-03-01). Linking Environmental Research and Practice through Collaboration.
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  Woodhouse, C.A., J.L. Rice, and D. Ferguson. Linking Environmental Research and Practice through Collaboration. Universities Council on Water Resources Annual Conference, Santa Fe, NM. July 17-19, 2012*;Invited: Yes;Type of Presentation: Academic Conference;
• Woodhouse, C. A. (2012, 2013-03-01). North American Monsoon Project.
  More info

  Woodhouse, C.A. North American Monsoon Project. Southwest Climate Workshop, Los Alamos National Laboratory, Jemez Springs NM, Sept. 6, 2012.;Submitted: Yes;Type of Presentation: Academic Conference/Workshop;
• Woodhouse, C. A. (2012, 2013-03-01). Regional Patterns of Cool Season and Monsoon Precipitation in the Southwestern US over the Past Four Centuries.
  More info

  Woodhouse, C.A., D. Griffin, H.L., Faulstich, and C.L. Castro. Regional Patterns of Cool Season and Monsoon Precipitation in the Southwestern US over the Past Four Centuries, GC046, American Geophysical Union, San Francisco, CA, Dec. 5-9, 2011.;Invited: Yes;Type of Presentation: Academic Conference;
• Woodhouse, C. A. (2012, 2013-03-01). Southwestern US Seasonal Precipitation and Fire Occurrence from Tree Rings.
  More info

  Woodhouse, C.A., D. Griffin, H.L., Faulstich, and T.W. Swetnam. Southwestern US Seasonal Precipitation and Fire Occurrence from Tree Rings, GC049, American Geophysical Union, San Francisco, CA, Dec. 5-9, 2011.;Submitted: Yes;Type of Presentation: Academic Conference;
• Woodhouse, C. A. (2012, 2013-03-01). Streamflow and Monsoon Reconstructions for the Lower Rio Grande Basin, USA..
  More info

  Woodhouse, C.A., D.M. Meko, D. Griffin, C.L. Castro. Streamflow and Monsoon Reconstructions for the Lower Rio Grande Basin, USA. Mountain Climate (MtnClim) meeting, Estes Park, CO, Sept. 1-4, 2012.;Submitted: Yes;Type of Presentation: Academic Conference/Workshop;

Poster Presentations

• Woodhouse, C. A. (2019, December). Engaged Research to Advance Scientific and Societal Goals: A Case Study from the Lower Colorado River Basin. American Geophysical Union Fall Meeting.
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  Engaged Research to Advance Scientific and Societal Goals: A Case Study from the Lower Colorado River BasinConnie A. Woodhouse Daniel B. Ferguson While academic researchers have become increasingly interested in engaging with practitioners to develop research projects that are useful and relevant for decision making, a number of deterrents often discourage this type of work. A main deterrent is the belief that research driven by practical considerations, while potentially usable, is not likely to be cutting-edge science. Consequently, some researchers, particularly those in the early stages of their career, are reluctant to devote time to engaged research in part because of the perception that it will yield less interesting and novel scientific results. In this presentation, we describe a relatively small project that was designed to achieve research results that are relevant to decision makers as well as advancing scientific knowledge. In part because of limited resources, we chose to develop a collaborative project that began with broad science questions that our previous experience suggested was of interest to natural resources professionals in the US Southwest: What is the role of temperature in the variability of streamflow? How does climate more broadly influence surface water supplies in Lower Colorado River tributaries? We then designed a process for recruiting and engaging potentially interested water management and natural resources professionals so that the initial research questions could evolve toward topics that were both scientifically interesting and societally relevant. That process led to insights for useful avenues of inquiry which were also new areas of research. These included the issue of watershed level scale, which then led to the discovery of the variable influence of seasonal climate on streamflow in unexpected ways. Discussions also led to novel approaches to analysis that were outside our usual toolkit of statistical techniques. This project is ongoing, but some main messages to promote outcomes for science and decision making are: 1) welcome new ideas from your partners that may not initially coincide with a plan you envisioned, 2) report and discuss research results at intervals throughout the project, and 3) be open to altering research directions and methods based on evolving ideas, new findings, and feedback from your partners.
• Woodhouse, C. A., & Tintor, W. (2018, NA). Rocky Mountain Bristlecone Pine Climate Relationships. Mountain Climate Conference (MTNCLIM). Gothic, CO: MTNCLIM.
• Woodhouse, C. A., & Pederson, G. T. (2016, December). Warm and Cool Droughts: The Influence of Temperature on Colorado River Flow. American Geophysical Union, San Francisco, CA.
• Woodhouse, C. A. (2013, December). Klamath River Reconstruction: Strategies for Dealing with Uncertainty in Calibration Data. American Geophysical Union.
  More info

  Woodhouse, C.A., S.B. Malevich, D.M. Meko, S. Gangopadhyay. Klamath River Reconstruction: Strategies for Dealing with Uncertainty in Calibration Data, GC11A-0957, American Geophysical Union, San Francisco, CA, Dec. 9-13, 2013.

Others

• Woodhouse, C. A. (2019, unknown). Colorado River Basin Climate and Hydrology State of the Science. report to Colorado River water resource managers.
  More info

  Peer-reviewed synthesis report to and funded by the U.S. Bureau of Reclamation and a work group of state and local water management agencies. I authored Chapter 10. Paleohydrology, and provided input to several other sections. The report is currently being reviewed by the water manager group, and is anticipated to be completed in March 2020
• Meko, D. M., Woodhouse, C. A., & Touchan, R. (2014, August). Klamath/San Joaquin/Sacramento Hydroclimatic Reconstructions from Tree Rings. Final Report to California Department of Water Resources, Agreement 4600008850. http://www.water.ca.gov/waterconditions/docs/tree_ring_report_for_web.pdf