Ferguson - Dead Indian Hill update - PSME - WY040, PAGES North America 2K Version Ferguson, C.W.; Despain, D.G.; Graumlich, L.J.; Waggoner, L. Ferguson, C.W. Despain, D.G. Graumlich, L.J. Waggoner, L. PAGES 2k Network PAGES NAmerica 2k earth science/paleoclimate/tree-ring (Dead Indian Hill 2>LATITUDE 44.1833>LONGITUDE -108.7167) In western North America, snowpack has declined in recent decades, and further losses are projected through the 21st century. Here, we evaluate the uniqueness of recent declines using snowpack reconstructions from 66 tree-ring chronologies in key runoff-generating areas of the Colorado, Columbia, and Missouri River drainages. Over the past millennium, late 20th century snowpack reductions are almost unprecedented in magnitude across the northern Rocky Mountains and in their north-south synchrony across the cordillera. Both the snowpack declines and their synchrony result from unparalleled springtime warming that is due to positive reinforcement of the anthropogenic warming by decadal variability. The increasing role of warming on large-scale snowpack variability and trends foreshadows fundamental impacts on streamflow and water supplies across the western United States. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Ferguson, C.W. Investigator : Despain, D.G. Investigator : Graumlich, L.J. Investigator : Waggoner, L. 2013-04-10 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/1000121 https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/pages2k/namerica2k/nam-tr_143-wy040-1200-1987.txt https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/pages2k/namerica2k/nam-tr_143-wy040-1200-1987.txt English https://www.ncdc.noaa.gov/paleo/study/1000121 https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/pages2k/namerica2k/nam-tr_143-wy040-1200-1987.txt Gregory T. Pederson, Stephen T. Gray, Connie A. Woodhouse, Julio L. Betancourt, Daniel B. Fagre, Jeremy S. Littell, Emma Watson, Brian H. Luckman, Lisa J. Graumlich2011The unusual nature of recent snowpack declines in the North American CordilleraScience3336040332-33510.1126/science.1201570http://science.sciencemag.org/content/333/6040/332 START YEAR: 1200 AD * END YEAR: 1987 AD -108.7167 44.1833 -108.7167 44.1833