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首页> 外文期刊>Geophysical Research Letters >Evaluation of Regional Climate Models Using Regionally Optimized GRACE Mascons in the Amery and Getz Ice Shelves Basins, Antarctica
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Evaluation of Regional Climate Models Using Regionally Optimized GRACE Mascons in the Amery and Getz Ice Shelves Basins, Antarctica

机译：在Amery和Getz Ice Shelves Basins，南极洲使用区域优化的恩典吉祥物评估区域气候模型

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摘要

We develop regionally optimized Gravity Recovery and Climate Experiment (GRACE) solutions to evaluate the mass balance of the drainage basins of Amery Ice Shelf, East Antarctica, and Getz Ice Shelf, West Antarctica. We find that the Amery region is near balance, while the Getz region is rapidly losing mass. We compare the results with the mass budget method (MBM) combining ice discharge along the periphery with surface mass balance derived from three regional climate models: (1) Regional Atmospheric Climate Model (RACMO) 2.3p1 and (2) 2.3p2, and (3) Modele Atmospherique Regional 3.6.41. For Amery, MBM/RACMO2.3p1 agrees with GRACE, while MBM/RACMO2.3p2 and MBM/MAR3.6.41 suggest a positive mass balance. For Getz, all estimates agree with a mass loss and the GRACE results are robust to uncertainties in glacial isostatic adjustment derived from an ensemble 128,000 forward models. Over the period April 2002 to November 2015, the mass loss of the Getz drainage basin is 22.9 +/- 10.9 Gt/yr with an acceleration of 1.6 +/- 0.9 Gt/yr(2).
机译：我们开发了区域优化的重力恢复和气候实验（Grace）解决方案，以评估Amery Ice Imper，East Antarctica和Getz Ice Shelf，West Antaricta的排水盆地的质量平衡。我们发现阿梅地区近乎平衡，而Getz地区正在迅速损失质量。我们将沿着三周沿着三个区域气候模型的外围组合的大规模预算方法（MBM）的结果进行比较：（1）区域大气气候模型（RACMO）2.3p1和（2）2.3p2，（ 3）建模型大气区域3.6.41。对于阿梅利，MBM / RACMO2.3P1同意恩典，而MBM / RACMO2.3P2和MBM / MAR3.6.41建议积极的质量平衡。对于Getz，所有估计都同意大规模损失，恩典结果对来自Ensemble 128,000前进模型的冰川等静压调整的不确定性具有强大。在2002年4月至2015年11月期间，Getz排水盆地的质量损失为22.9 +/- 10.9 GT / YR，加速为1.6 +/- 0.9 GT / YR（2）。

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