Mon Dec 15, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Yang, Fan, Bai, Jiahui, Liu, Hailong, Zhang, Weihang, Wu, Yi, Liu, Shuhao, Shi, Chunxiang, Zhang, Tao, Zhong, Min, Zhu, Zitong, Wang, Changqing, Forootan, Ehsan, Yu, Jiangfeng, Yu, Zipeng, and Xiao, Yun, 2025. CRA-LICOM: a global high-frequency atmospheric and oceanic temporal gravity field product (2002–2024). Earth System Science Data, 17(9):4691–4714, doi:10.5194/essd-17-4691-2025.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025ESSD...17.4691Y,
author = {{Yang}, Fan and {Bai}, Jiahui and {Liu}, Hailong and {Zhang}, Weihang and {Wu}, Yi and {Liu}, Shuhao and {Shi}, Chunxiang and {Zhang}, Tao and {Zhong}, Min and {Zhu}, Zitong and {Wang}, Changqing and {Forootan}, Ehsan and {Yu}, Jiangfeng and {Yu}, Zipeng and {Xiao}, Yun},
title = "{CRA-LICOM: a global high-frequency atmospheric and oceanic temporal gravity field product (2002{\textendash}2024)}",
journal = {Earth System Science Data},
year = 2025,
month = sep,
volume = {17},
number = {9},
pages = {4691-4714},
abstract = "{Modeling sub-daily mass changes, dominated by the atmosphere and the
oceans, is a fundamental requirement for nearly all existing
terrestrial or space-borne geodetic observations to perform
signal separation. Removing these high-frequency mass changes,
through the usage of so-called de-aliasing products, is of
particular interest for satellite gravity missions such as GRACE
and GRACE-FO to prevent the aliasing of short-term mass changes
into seasonal and long-term mass variability. Ongoing efforts
focus on simulating this high-frequency signal by driving
atmospheric/oceanic numerical models with specific climate-
forcing fields and assimilating observational data. In this
study, we establish China's first de-aliasing computation
platform, achieved by using the recently released CRA-40
(China's first generation of atmospheric reanalysis) as forcing
fields to drive our in-house 3-D atmospheric integration model
and the LASG/IAP (State Key Laboratory of Numerical Modeling for
Atmospheric Sciences and Geophysical Fluid Dynamics/Institute of
Atmospheric Physics) Climate System Ocean Model 3.0 (LICOM3.0).
With this new platform, we reproduce an alternative high-
frequency atmospheric and oceanic gravity de-aliasing product,
called CRA-LICOM, at 6 hourly and 50 km resolution, covering
2002{\textendash}2024 at a global scale. The product is freely
available at 10.11888/SolidEar.tpdc.302016 . Inter-comparisons
with the products of GFZ (Helmholtz Centre for Geosciences) and
validations against independent observations reveal: (i) the
current version of CRA-LICOM satisfies the requirement of the
state-of-the-art satellite gravity missions, as well as other
geodetic measurements, and (ii) despite agreement across most
areas, considerable uncertainty is found at marginal seas near
continental shelves, particularly at high-latitude regions.
Therefore, scientific applications that aim to understand the
sub-daily atmospheric-oceanic water exchange, as well as mission
design of future satellite gravity that seeks accurate gravity
de-aliasing, can use our product as a reliable source.
Nevertheless, the current platform has the potential to be
improved in terms of modeling and data assimilation capacity,
which will be outlined in this study.}",
doi = {10.5194/essd-17-4691-2025},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025ESSD...17.4691Y},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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