Waggoner - Yellow Mountain Ridge 1 - Entire Bark Trees - PIFL - MT113, PAGES North America 2K Version Waggoner, L.; Graumlich, L.J. Waggoner, L. Graumlich, L.J. PAGES 2k Network PAGES NAmerica 2k PIFL Pinus flexilis E. James limber pine earth science/paleoclimate/tree-ring (Yellow Mountain Ridge 1 - Entire Bark Trees>LATITUDE 45.3>LONGITUDE -111.32) Climate variability, coupled with increasing demand is raising concerns about the sustainability of water resources in the western United States. Tree-ring reconstructions of stream flow that extend the observational record by several centuries provide critical information on the short-term variability and multi-decadal trends in water resources. In this study, precipitation sensitive Douglas-fir (Pseudotsuga menzeisii) tree ring records are used to reconstruct annual flow of the Yellowstone River back to A.D. 1706. Linkages between precipitation in the Greater Yellowstone Region and climate variability in the Pacific basin were incorporated into our model by including indices Pacific Ocean interannual and decadal-scale climatic variability, namely the Pacific Decadal Oscillation and the Southern Oscillation. The reconstruction indicates that 20th century streamflow is not representative of flow during the previous two centuries. With the exception of the 1930s, streamflow during the 20th century exceeded average flows during the previous 200 years. The drought of the 1930s resulted in the lowest flows during the last three centuries, however, this probably does not represent a worst-case scenario for the Yellowstone as other climate reconstructions indicate more extreme droughts prior to the 18th century. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Waggoner, L. Investigator : Graumlich, L.J. 2013-04-10 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/1000023 https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/pages2k/namerica2k/nam-tr_89-mt113-1200-1987.txt https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/pages2k/namerica2k/nam-tr_89-mt113-1500-1980.txt https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/pages2k/namerica2k/nam-tr_89-mt113-1200-1987.txt https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/pages2k/namerica2k/nam-tr_89-mt113-1500-1980.txt English https://www.ncdc.noaa.gov/paleo/study/1000023 https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/pages2k/namerica2k/nam-tr_89-mt113-1200-1987.txt https://www1.ncdc.noaa.gov/pub/data/paleo/reconstructions/pages2k/namerica2k/nam-tr_89-mt113-1500-1980.txt Graumlich, L.J., Pisaric, M.F.J., Waggoner, L.A., Littell, J., and King, J. 2003. Upper Yellowstone River Flow and Teleconnections with Pacific Basin Climate Variability During the Past Three Centuries. Climatic Change, 59(1-2), 245-262. DOI:10.1007/978-94-015-1252-7_12. START YEAR: 1200 AD * END YEAR: 1987 AD -111.32 45.3 -111.32 45.3