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Take Home Message

In the future, April 1 will not be a reliable estimate of maxium snow water equivelent (SWE) in the basin as snowpacks melt increasingly earlier in the year.

Key Findings

Background

The following maps show recent and predicted future April 1 SWE maps, historically, a time when snowpack has reached its annual maxium in many western watersheds. All maps depict average values over the 20 year periods indicated. The top-most map shows SWE distributions for the recent past. Results using the three climate scenarios are portrayed across the columns in the table below; Rows indicate the time period depicted. You can see a larger version of each map by clicking on the map.

 

Recent Past
1990 to 2010 SWE-Historic SWE-Historic SWE-Historic

 

 

Low Change Future (GFDL)

 

Warm/Wet Future (CSIRO)

 

Hot/Dry Future (HadGEM)

2010 to 2030 SWE-Historic SWE-Historic SWE-Historic
 

 

                                     Low Change Future (GFDL)

 

                                           Warm/Wet Future (CSIRO)

 

                                             Hot/Dry Future (HadGEM)

2030 to 2050 SWE-Historic SWE-Historic SWE-Historic
 

 

                                    Low Change Future (GFDL)          

 

                                            Warm/Wet Future (CSIRO)

 

                                              Hot/Dry Future (HadGEM)

2050 to 2070 SWE-Historic SWE-Historic SWE-Historic
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 



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