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一个源自中国风云微波辐射计(MWRI)的全球日土壤湿度数据集(2010-2019 年)。

A global daily soil moisture dataset derived from Chinese FengYun Microwave Radiation Imager (MWRI)(2010-2019).

机构信息

State Key Laboratory of Remote Sensing Science, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, 100101, China.

Ministry of Education Key Laboratory for Earth System Modeling, Department of Earth System Science, Tsinghua University, Beijing, 100084, China.

出版信息

Sci Data. 2023 Mar 14;10(1):133. doi: 10.1038/s41597-023-02007-3.

DOI:10.1038/s41597-023-02007-3
PMID:36918527
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10014966/
Abstract

Surface soil moisture (SSM) is an important variable in drought monitoring, floods predicting, weather forecasting, etc. and plays a critical role in water and heat exchanges between land and atmosphere. SSM products from L-band observations, such as the Soil Moisture Active Passive (SMAP) Mission, have proven to be optimal global estimations. Although X-band has a lower sensitivity to soil moisture than that of L-band, Chinese FengYun-3 series satellites (FY-3A/B/C/D) have provided sustainable and daily multiple SSM products from X-band since 2008. This research developed a new global SSM product (NNsm-FY) from FY-3B MWRI from 2010 to 2019, transferred high accuracy of SMAP L-band to FY-3B X-band. The NNsm-FY shows good agreement with in-situ observations and SMAP product and has a higher accuracy than that of official FY-3B product. With this new dataset, Chinese FY-3 satellites may play a larger role and provide opportunities of sustainable and longer-term soil moisture data record for hydrological study.

摘要

地表土壤湿度(SSM)是干旱监测、洪水预测、天气预报等的重要变量,在陆地和大气之间的水热交换中起着关键作用。来自 L 波段观测的 SSM 产品,如土壤湿度主动被动(SMAP)任务,已被证明是最佳的全球估算。尽管 X 波段对土壤湿度的灵敏度低于 L 波段,但自 2008 年以来,中国风云 3 系列卫星(FY-3A/B/C/D)已经提供了可持续的、每日的 X 波段多通道 SSM 产品。本研究利用 FY-3B MWRI 从 2010 年到 2019 年开发了一个新的全球 SSM 产品(NNsm-FY),将 SMAP L 波段的高精度转移到 FY-3B X 波段。NNsm-FY 与实地观测和 SMAP 产品吻合较好,其精度高于官方 FY-3B 产品。有了这个新数据集,中国风云 3 卫星可能会发挥更大的作用,为水文研究提供可持续的、长期的土壤湿度数据记录的机会。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/7e2b48ab7bfa/41597_2023_2007_Fig13_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/80b98892697d/41597_2023_2007_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/f001e961cf81/41597_2023_2007_Fig2_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/981e7506055c/41597_2023_2007_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/7e517e152515/41597_2023_2007_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/1b66332da21e/41597_2023_2007_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/f9447cd1c216/41597_2023_2007_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/49eb118a70d5/41597_2023_2007_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/9268384088cb/41597_2023_2007_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/ac088a17866e/41597_2023_2007_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/f870de1b3a57/41597_2023_2007_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/e387e58dae09/41597_2023_2007_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/7e2b48ab7bfa/41597_2023_2007_Fig13_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/80b98892697d/41597_2023_2007_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/f001e961cf81/41597_2023_2007_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/64cfac32d424/41597_2023_2007_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/981e7506055c/41597_2023_2007_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/7e517e152515/41597_2023_2007_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/1b66332da21e/41597_2023_2007_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/f9447cd1c216/41597_2023_2007_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/49eb118a70d5/41597_2023_2007_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/9268384088cb/41597_2023_2007_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/ac088a17866e/41597_2023_2007_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/f870de1b3a57/41597_2023_2007_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/e387e58dae09/41597_2023_2007_Fig12_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef13/10014966/7e2b48ab7bfa/41597_2023_2007_Fig13_HTML.jpg

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