scholarly journals CCSR/NIES 5.4g WATER ISOTOPE GENERAL CIRCULATION MODEL : SENSITIVITY EXPERIMENTS FOR IMPROVEMENT

2006 ◽  
Vol 50 ◽  
pp. 553-558
Author(s):  
Yasuhiro ISHIZAKI ◽  
Kei YOSHIMURA ◽  
Taikan OKI ◽  
Shinjirou KANAE
Keyword(s):  
General Circulation Model ◽  
General Circulation ◽  
Circulation Model ◽  
Model Sensitivity ◽  
Sensitivity Experiments ◽  
Water Isotope

scholarly journals Erratum: A general circulation model of water isotope cycles in the atmosphere

Nature ◽  
1984 ◽  
Vol 311 (5987) ◽  
pp. 680-680 ◽  
Author(s):  
S. Joussaume ◽  
J. Jouzel ◽  
R. Sadourny
Keyword(s):  
General Circulation Model ◽  
General Circulation ◽  
Circulation Model ◽  
Water Isotope

Impacts of model improvements on general circulation model sensitivity to sea-surface temperature forcing

1995 ◽  
Vol 15 (10) ◽  
pp. 1061-1086 ◽  
Author(s):  
Leonard M. Druyan ◽  
Kathryn P. Shah ◽  
Kwok-Wai K. Lo ◽  
Jose A. Marengo ◽  
Gary Russell
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
General Circulation Model ◽  
General Circulation ◽  
Circulation Model ◽  
Sea Surface ◽  
Model Sensitivity

Ocean general circulation model sensitivity to forcing from scatterometer winds

1999 ◽  
Vol 104 (C5) ◽  
pp. 11337-11358 ◽  
Author(s):  
Ralph F. Milliff ◽  
William G. Large ◽  
Jan Morzel ◽  
Gokhan Danabasoglu ◽  
Toshio M. Chin
Keyword(s):  
General Circulation Model ◽  
General Circulation ◽  
Circulation Model ◽  
Ocean General Circulation Model ◽  
Model Sensitivity ◽  
Ocean General Circulation

scholarly journals Influence of Last Glacial Maximum boundary conditions on the global water isotope distribution in an atmospheric general circulation model

2013 ◽  
Vol 9 (2) ◽  
pp. 789-809 ◽  
Author(s):  
T. Tharammal ◽  
A. Paul ◽  
U. Merkel ◽  
D. Noone
Keyword(s):  
Boundary Conditions ◽  
Surface Temperature ◽  
General Circulation Model ◽  
Last Glacial Maximum ◽  
General Circulation ◽  
Atmospheric General Circulation Model ◽  
Ice Sheet ◽  
Circulation Model ◽  
Atmospheric General Circulation ◽  
Water Isotope

Abstract. To understand the validity of δ18O proxy records as indicators of past temperature change, a series of experiments was conducted using an atmospheric general circulation model fitted with water isotope tracers (Community Atmosphere Model version 3.0, IsoCAM). A pre-industrial simulation was performed as the control experiment, as well as a simulation with all the boundary conditions set to Last Glacial Maximum (LGM) values. Results from the pre-industrial and LGM simulations were compared to experiments in which the influence of individual boundary conditions (greenhouse gases, ice sheet albedo and topography, sea surface temperature (SST), and orbital parameters) were changed each at a time to assess their individual impact. The experiments were designed in order to analyze the spatial variations of the oxygen isotopic composition of precipitation (δ18Oprecip) in response to individual climate factors. The change in topography (due to the change in land ice cover) played a significant role in reducing the surface temperature and δ18Oprecip over North America. Exposed shelf areas and the ice sheet albedo reduced the Northern Hemisphere surface temperature and δ18Oprecip further. A global mean cooling of 4.1 °C was simulated with combined LGM boundary conditions compared to the control simulation, which was in agreement with previous experiments using the fully coupled Community Climate System Model (CCSM3). Large reductions in δ18Oprecip over the LGM ice sheets were strongly linked to the temperature decrease over them. The SST and ice sheet topography changes were responsible for most of the changes in the climate and hence the δ18Oprecip distribution among the simulations.

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