New paper finds Antarctic Peninsula has accumulated significant extra ice since 1850
http://hockeyschtick.blogspot.jp/201...nsula-has.htmlA paper published today in Geophysical Research Letters finds the Antarctic Peninsula has experienced a "significant accumulation" of "up to 45 meters of extra ice thickness over past 155 years." This finding is contrary to the alarmists claims of the highly-flawed study published by RealClimate's Dr. Eric Steig, which alleged that the Antarctic Peninsula is rapidly warming. The finding is particularly surprising since the "significant accumulation" of ice has occurred since the end of the Little Ice Age in ~1850.
GEOPHYSICAL RESEARCH LETTERS, doi: 10.1029/2012GL052559
Increased ice loading in the Antarctic Peninsula since the 1850s and its effect on Glacial Isostatic Adjustment
- Accumulation increase results in up to 45m extra ice thickness over 155 years
- Model predicts GIA-related subsidence of up to 7mm/yr which will affect GPS
- GRACE-derived rates of ice-mass change are biased low by ignoring this signal
Grace Alexandra Nield
Pippa L Whitehouse
Matt A King
Peter J. Clarke
Michael J. Bentley
Antarctic Peninsula (AP) ice core records indicate significant accumulation increase since 1855, and any resultant ice mass increase has the potential to contribute substantially to present-day Glacial Isostatic Adjustment (GIA). We derive empirical orthogonal functions from climate model output to infer typical spatial patterns of accumulation over the AP and, by combining with ice core records, estimate annual accumulation for the period 1855-2010. In response to this accumulation history, high resolution ice-sheet modeling predicts ice thickness increases of up to 45m, with the greatest thickening in the northern and western AP. Whilst this thickening is predicted to affect GRACE estimates by no more than 6.2 Gt/yr, it may contribute up to -7 mm/yr to the present-day GIA uplift rate, depending on the chosen Earth model, with a strong east-west gradient across the AP. Its consideration is therefore critical to the interpretation of observed GPS velocities in the AP.
fair use from hockeyschtick.blogspot
One thing to remember is that the Al Gore et al 'global warming' crowd of alarmists that have pushed carbon credit trades has been another big con job... and so is about everything else the PTB have pushed since history began... think 9-11, think 'terrorists' etc.