Future climate of the Caribbean from a super-high-resolution atmospheric general circulation model

2012 ◽  
Vol 113 (1-2) ◽  
pp. 271-287 ◽  
Author(s):  
Trevor C. Hall ◽  
Andrea M. Sealy ◽  
Tannecia S. Stephenson ◽  
Shoji Kusunoki ◽  
Michael A. Taylor ◽  
...  
Keyword(s):  
High Resolution ◽  
General Circulation Model ◽  
General Circulation ◽  
Atmospheric General Circulation Model ◽  
Circulation Model ◽  
Future Climate ◽  
Atmospheric General Circulation ◽  
The Caribbean

scholarly journals Oceanic Forcing of Antarctic Climate Change: A Study Using a Stretched-Grid Atmospheric General Circulation Model

2014 ◽  
Vol 27 (15) ◽  
pp. 5786-5800 ◽  
Author(s):  
Gerhard Krinner ◽  
Chloé Largeron ◽  
Martin Ménégoz ◽  
Cécile Agosta ◽  
Claire Brutel-Vuilmet
Keyword(s):  
Climate Change ◽  
General Circulation Model ◽  
General Circulation ◽  
Atmospheric General Circulation Model ◽  
Surface Condition ◽  
Circulation Model ◽  
Sea Surface ◽  
Variable Resolution ◽  
Atmospheric General Circulation ◽  
Simulated Climate

Abstract A variable-resolution atmospheric general circulation model (AGCM) is used for climate change projections over the Antarctic. The present-day simulation uses prescribed observed sea surface conditions, while a set of five simulations for the end of the twenty-first century (2070–99) under the Special Report on Emissions Scenarios (SRES) A1B scenario uses sea surface condition anomalies from selected coupled ocean–atmosphere climate models from phase 3 of the Coupled Model Intercomparison Project (CMIP3). Analysis of the results shows that the prescribed sea surface condition anomalies have a very strong influence on the simulated climate change on the Antarctic continent, largely dominating the direct effect of the prescribed greenhouse gas concentration changes in the AGCM simulations. Complementary simulations with idealized forcings confirm these results. An analysis of circulation changes using self-organizing maps shows that the simulated climate change on regional scales is not principally caused by shifts of the frequencies of the dominant circulation patterns, except for precipitation changes in some coastal regions. The study illustrates that in some respects the use of bias-corrected sea surface boundary conditions in climate projections with a variable-resolution atmospheric general circulation model has some distinct advantages over the use of limited-area atmospheric circulation models directly forced by generally biased coupled climate model output.

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