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Summary Climate Scenarios Table

This page is part of the project: Apostle Islands

Climate Driver Least Change Soggy Yo-Yo Hot and Bothered
Temperature

winter: +4 deg(F)

spring: +2 deg(F)

summer: +2 deg(F)

fall: +3 deg(F)

winter: +1 deg(F)

spring: +2 deg(F)

summer: +2 deg(F)

fall: +3 deg(F)

winter: +1 deg(F)

spring: +2 deg(F)

summer: +8 deg(F)

fall: +3 deg(F)

winter: +7 deg(F)

spring: +7 deg(F)

summer: +8 deg(F)

fall: +6 deg(F)

Precipitation

winter: +15% change

spring: -5% change

summer: -25% change

fall: +15% change

10% corresponds to about one inch of liquid precipitation.

winter: +20% change

spring: +15% change

summer: +20% change

fall: +20% change

winter: +15% change

spring: -5% change

summer: -20% change

fall: +5% change

winter: -5% change

spring: -5% change

summer: -30% change

fall: -10% change

Lake Temperature +3 degrees (F) +1 degree (F) + 5 degrees (F) with greater variability from year-to-year + 7 degrees (F)
Lake Ice - 3 weeks of ice coverage -2 weeks of ice coverage Great variability from year-to-year (i.e., some years lots of ice, other years little ice). Inconsistent/unstable ice only forms in shallow areas like Apostle Islands 
Lake Levels No change Increase 2 feet; consistently 0-4 feet above current levels Greater intra- and inter-annual variability; water is -3 to +3 feet within current levels.

Water levels drop 2 feet; consistently 0-4 feet below current levels

Arctic Oscillation Variability remains the same (i.e., the AO does not show preference for one mode over the other) 7/10 winters negative AO: cold, moist air dominates during winter. 7/10 winters negative AO: cold, moist air dominates during winter. 7/10 winters positive AO: warm, dry air dominates during winter.