The AntSMB dataset: a comprehensive compilation of surface mass balance field observations over the Antarctic Ice Sheet
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Published:2021-06-29
Issue:6
Volume:13
Page:3057-3074
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ISSN:1866-3516
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Container-title:Earth System Science Data
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language:en
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Short-container-title:Earth Syst. Sci. Data
Author:
Wang YetangORCID, Ding Minghu, Reijmer Carleen H.ORCID, Smeets Paul C. J. P., Hou Shugui, Xiao Cunde
Abstract
Abstract. A comprehensive compilation of observed records is needed
for accurate quantification of surface mass balance (SMB) over Antarctica,
which is a key challenge for calculation of Antarctic contribution to global
sea level change. Here, we present the AntSMB dataset: a new
quality-controlled dataset of a variety of published field measurements of
the Antarctic Ice Sheet SMB by means of stakes, snow pits, ice cores,
ultrasonic sounders, and ground-penetrating radar (GPR). The dataset
collects 3579 individual multi-year-averaged observations, 687 annually
resolved time series from 675 sites extending back over the past 1000 years, and
daily resolved records covering 245 years from 32 sites across the whole ice
sheet. These records are derived from ice cores, snow pits, stakes/stake
farms, and ultrasonic sounders. Furthermore, GPR multi-year-averaged
measurements are included in the dataset, covering an area of 22 025 km2. This is the first ice-sheet-scale compilation of SMB records at
different temporal (daily, annual, and multi-year) resolutions from multiple
types of measurement and is available at
https://doi.org/10.11888/Glacio.tpdc.271148 (Wang et al., 2021). The
database has potentially wide applications such as the investigation of
temporal and spatial variability in SMB, model validation, assessment of
remote sensing retrievals, and data assimilation. As a case of model
estimation, records of the AntSMB dataset are used to assess the performance
of ERA5 for temporal and spatial variability in SMB over Antarctica.
Funder
National Natural Science Foundation of China National Natural Science Foundation of China-Guangdong Joint Fund Youth Innovation Technology Project of Higher School in Shandong Province
Publisher
Copernicus GmbH
Subject
General Earth and Planetary Sciences
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