Assimilation of GRACE-derived oceanic mass distributions with a global ocean circulation model
Assimilation of GRACE-derived oceanic mass distributions with a global ocean circulation model
复制标题
用全球海洋环流模型同化 GRACE 得出的海洋质量分布
DOI:
10.1007/s00190-014-0766-0
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发表时间:
2015
影响因子:
4.4
通讯作者:
Thomas
中科院分区:
文献类型:
--
作者:
Saynisch J;Bergmann-Wolf;Thomas
To study the sub-seasonal distribution and generation of ocean mass anomalies, Gravity Recovery and Climate Experiment (GRACE) observations of daily and monthly resolution are assimilated into a global ocean circulation model with an ensemble-based Kalman-Filter technique. The satellite gravimetry observations are processed to become time-variable fields of ocean mass distribution. Error budgets for the observations and the ocean model’s initial state are estimated which contain the full covariance information. The consistency of the presented approach is demonstrated by increased agreement between GRACE observations and the ocean model. Furthermore, the simulations are compared with independent observations from 54 bottom pressure recorders. The assimilation improves the agreement to high-latitude recorders by up to 2 hPa. The improvements are caused by assimilation-induced changes in the atmospheric wind forcing, i.e., quantities not directly observed by GRACE. Finally, the use of the developed Kalman-Filter approach as a destriping filter to remove artificial noise contaminating the GRACE observations is presented.
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DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
M. Vianna;V. Menezes;D. Chambers
通讯作者:
D. Chambers
影响因子:
2.2
作者:
J. Saynisch;M. Wenzel;J. Schröter
通讯作者:
J. Schröter
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
R. Quinn;J. Chittenden;S. Kounaves;M. Hecht
通讯作者:
M. Hecht
影响因子:
5.2
作者:
N. Vinogradova;R. Ponte;D. Stammer
通讯作者:
D. Stammer
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
J. Bonin;D. Chambers
通讯作者:
D. Chambers