Influence of Oceanic Boundary Conditions in Simulations of Antarctic Climate and Surface Mass Balance Change during the Coming Century
Influence of Oceanic Boundary Conditions in Simulations of Antarctic Climate and Surface Mass Balance Change during the Coming Century
复制标题
海洋边界条件对模拟未来世纪南极气候和地表质量平衡变化的影响
DOI：
10.1175/2007jcli1690.1
复制
发表时间：
2008
影响因子：
4.9
通讯作者：
O. Magand
中科院分区：
文献类型：
--
作者：
G. Krinner;Bérangère Guicherd;Katia Ox;C. Genthon;O. Magand
摘要本文报道了1981-2000年和2081-2100年期间南极气候的高分辨率（60 km）大气环流模式模拟。分析的重点是表面质量平衡的变化，总冰盖质量平衡的组成部分之一，其对全球海平面的影响。与以前的模拟相反，在以前的模拟中，作者直接使用两个世纪最后几十年的海洋-大气耦合模型产生的海面边界条件，这里应用了一种异常方法，其中目前的模拟使用观测到的海面条件，而20世纪末的模拟，世纪使用的是从叠加在当今观测上的耦合模拟中获得的海面条件变化。结果表明，使用观测到的海洋边界条件明显提高了模拟当今南极气候相比，使用耦合的气候边界条件的模型运行。
Abstract This article reports on high-resolution (60 km) atmospheric general circulation model simulations of the Antarctic climate for the periods 1981–2000 and 2081–2100. The analysis focuses on the surface mass balance change, one of the components of the total ice sheet mass balance, and its impact on global eustatic sea level. Contrary to previous simulations, in which the authors directly used sea surface boundary conditions produced by a coupled ocean–atmosphere model for the last decades of both centuries, an anomaly method was applied here in which the present-day simulations use observed sea surface conditions, while the simulations for the end of the twenty-first century use the change in sea surface conditions taken from the coupled simulations superimposed on the present-day observations. It is shown that the use of observed oceanic boundary conditions clearly improves the simulation of the present-day Antarctic climate, compared to model runs using boundary conditions from a coupled climate ...