@DavidRouxel1 @RoctexterNY @IPCC_CH Global sea-level rise is so slow that in many places it's dwarfed by local factors, like erosion, sedimentation, and vertical land motion. That's why some places have sea-level trends like this:
sealevel.info/MSL_graph.php?…
@DavidRouxel1 @RoctexterNY @IPCC_CH Some people mistakenly suppose AGW must accelerate sea-level rise, because it causes thermal expansion & melts ice. But they ignore the fact that AGW also increases snowfall on ice sheets & glaciers (an offsetting effect, lowering SL).
It does so through 2 distinct mechanisms:
@DavidRouxel1 @RoctexterNY @IPCC_CH 1. Warmer air carries more moisture. Below freezing, it's 8-12% more moisture per 1°C of warming. (That's why heaviest blizzards occur when temperatures are only moderately below freezing.)
web.gccaz.edu/~lnewman/gph11…
google.com/search?q=%22to…
@DavidRouxel1 @RoctexterNY @IPCC_CH 2. Reduced sea ice coverage = more open water, increasing ocean evaporation and thus "lake/ocean-effect snowfall" (LOES) on downwind land.
archive.is/vp9eP#selectio…
google.com/search?q=%22la…
@DavidRouxel1 @RoctexterNY @IPCC_CH The importance of LOES is illustrated by the story of Glacier Girl, a P-38 which made a forced landing on the Greenland Ice Sheet during WWII. It was buried by snowfall which averaged ≈70 ft/yr, and recovered 50 yrs later.
airspacemag.com/history-of-fli…
p38assn.org/glacier-girl-r…
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