On the performance of twentieth century reanalysis products for Antarctic snow accumulation
On the performance of twentieth century reanalysis products for Antarctic snow accumulation
复制标题
二十世纪南极积雪再分析产品的性能研究
DOI:
10.1007/s00382-019-05008-4
复制
发表时间:
2019-10
期刊:
影响因子:
4.6
通讯作者:
Sun Weijun
中科院分区:
文献类型:
--
作者:
Wang Yetang;Hou Shugui;Ding Minghu;Sun Weijun
The strengths and weakness of the Twentieth-Century Reanalysis (20CR), the Pilot reanalysis of the twentieth-century (ERA-20C), a coupled twentieth-century climate reanalysis product (CERA-20C), and an ensemble of ten twentieth-century atmospheric model integrations (ERA-20CM), are examined for Antarctic snow accumulation based on 3265 Antarctic multi-year averaged surface mass balance observations and 79 ice core snow accumulation time series, which provides an independent estimate because they are not assimilated into the reanalyses and not used to force ERA-20CM. The ECMWF “Interim” reanalysis (ERA-Interim) and two regional climate models (RACMO2 and MAR) are also used as a complementary analysis. Despite the magnitude discrepancy between simulations and observations, large-scale spatial variability in multi-year averaged snow accumulation observations are reasonably well reproduced by all the twentieth century datasets. The four datasets capture a large fraction (> 40%) of the interannual variability in the ice core snow accumulation composite over the Antarctic Peninsula from 1901 to 2010. However, none of the twentieth century datasets alone is able to explain > 20% of variance in ice core records at the other Antarctic regions during the twentieth century. Even for the modern satellite era (from 1979 onwards), their performance for Antarctic snow accumulation is still poorer, relative to ERA-Interim, RACMO2 and MAR. Considerable inhomogeneities and spurious changes in atmospheric circulation are found in these datasets, and thus the precipitation minus evaporation/sublimation (P–E) changes and trends during the past 100 years are largely artificial over Antarctica.
登录
查看更多内容
DOI:
10.1002/2015jd024565
发表时间:
2016-03
期刊:
Journal of Geophysical Research: Atmospheres
影响因子:
--
作者:
R. Fogt;Julie M. Jones;Chad A. Goergens;Megan E. Jones;G. A. Witte;Ming Yueng Lee
通讯作者:
R. Fogt;Julie M. Jones;Chad A. Goergens;Megan E. Jones;G. A. Witte;Ming Yueng Lee
影响因子:
5.5
作者:
Huai, Baojuan;Wang, Yetang;Dong, Xu
通讯作者:
Dong, Xu
DOI:
10.1002/2013jd020316
发表时间:
2014-03
期刊:
Journal of Geophysical Research: Atmospheres
影响因子:
--
作者:
Holly A. Titchner;N. Rayner
通讯作者:
Holly A. Titchner;N. Rayner
影响因子:
5.2
作者:
D. Schneider;R. Fogt
通讯作者:
D. Schneider;R. Fogt
DOI:
10.5194/tc-12-1479-2018
发表时间:
2017-10
期刊:
The Cryosphere
影响因子:
--
作者:
J. M. Wessem;W. J. Berg;B. Noël;E. Meijgaard;C. Amory;G. Birnbaum;C. L. Jakobs;Konstantin Krüger-Konstantin-Krüg
通讯作者:
J. M. Wessem;W. J. Berg;B. Noël;E. Meijgaard;C. Amory;G. Birnbaum;C. L. Jakobs;Konstantin Krüger-Konstantin-Krüg