A long term global daily soil moisture dataset derived from AMSR-E and AMSR2 (2002-2019).
A long term global daily soil moisture dataset derived from AMSR-E and AMSR2 (2002-2019).
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DOI:
10.1038/s41597-021-00925-8
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发表时间:
2021-05-27
期刊:
影响因子:
9.8
通讯作者:
Entekhabi D
中科院分区:
文献类型:
--
作者:
Yao P;Lu H;Shi J;Zhao T;Yang K;Cosh MH;Gianotti DJS;Entekhabi D
Long term surface soil moisture (SSM) data with stable and consistent quality are critical for global environment and climate change monitoring. L band radiometers onboard the recently launched Soil Moisture Active Passive (SMAP) Mission can provide the state-of-the-art accuracy SSM, while Advanced Microwave Scanning Radiometer for EOS (AMSR-E) and AMSR2 series provide long term observational records of multi-frequency radiometers (C, X, and K bands). This study transfers the merits of SMAP to AMSR-E/2, and develops a global daily SSM dataset (named as NNsm) with stable and consistent quality at a 36 km resolution (2002–2019). The NNsm can reproduce the SMAP SSM accurately, with a global Root Mean Square Error (RMSE) of 0.029 m3/m3. NNsm also compares well with in situ SSM observations, and outperforms AMSR-E/2 standard SSM products from JAXA and LPRM. This global observation-driven dataset spans nearly two decades at present, and is extendable through the ongoing AMSR2 and upcoming AMSR3 missions for long-term studies of climate extremes, trends, and decadal variability. Machine-accessible metadata file describing the reported data: 10.6084/m9.figshare.14533554
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影响因子:
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