CFE agenda 091117 - Laserfiche WebLink

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ater° II'' �esouir °ceem Observed Drought Trends 1958 to 2007 lIn r a ing drought Decreasing r ught �O44 YS4Vrc4pti� rc4yi�r�� Trends in end -of- summer drought as measured by the Palmer Drought Severity Index from 1958 to 2007 in each of 344 U.S. climate divisions.14' Hatching indicates significant trends. 43 v � alp alp uuiu' ,�: mi n 111 '0111 11, 11111 ' One to four week earlier peak streamflow due to earlier warming- driven snowmelt Earlier West and Northeast Proportion of precipitation falling as snow Decreasing West and Northeast Duration and extent of snow cover Decreasing Most of the United States Mountain snow water equivalent Decreasing West Annual precipitation Increasing Most of the United States Annual precipitation Decreasing Southwest Frequency of heavy precipitation events Increasing Most of the United States Colorado and Columbia River Runoff and streamflow Decreasing Basins Streamflow Increasing Most of East Amount of ice in mountain glaciers Decreasing U.S. western mountains, Alaska Water temperature of lakes and streams Increasing Most of the United States Ice cover on lakes and rivers Decreasing Great Lakes and Northeast Periods of drought Increasing Parts of West and East Salinization of surface waters Increasing Florida, Louisiana Widespread thawing of permafrost Increasing Alaska Observed Drought Trends 1958 to 2007 lIn r a ing drought Decreasing r ught �O44 YS4Vrc4pti� rc4yi�r�� Trends in end -of- summer drought as measured by the Palmer Drought Severity Index from 1958 to 2007 in each of 344 U.S. climate divisions.14' Hatching indicates significant trends. 43