Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 28, issue 9
Articles | Volume 28, issue 9
https://doi.org/10.5194/hess-28-1999-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-28-1999-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 28, issue 9
Research article
 | 
07 May 2024
Research article |  | 07 May 2024

Evaluation of reanalysis soil moisture products using cosmic ray neutron sensor observations across the globe

Yanchen Zheng, Gemma Coxon, Ross Woods, Daniel Power, Miguel Angel Rico-Ramirez, David McJannet, Rafael Rosolem, Jianzhu Li, and Ping Feng

Supplement

https://doi.org/10.5194/hess-28-1999-2024-supplement

Data sets

Daily and sub-daily hydrometeorological and soil data (2013–2019) [COSMOS-UK] S. Stanley et al. https://doi.org/10.5285/b5c190e4-e35d-40ea-8fbe-598da03a1185

Dataset of ``COSMOS-Europe: A European network of Cosmic-Ray Neutron Soil Moisture Sensors'' H. Bogena and P. Ney https://doi.org/10.34731/x9s3-kr48

CosmOz - The Australian Cosmic-ray Soil Moisture Sensor Network, Version 1.0.0, D. McJannet et al. https://doi.org/10.25901/5e7ab81af0394

ERA5-Land hourly data from 1981 to present J. Muñoz Sabater https://doi.org/10.24381/cds.e2161bac

NCEP Climate Forecast System Version 2 (CFSv2) Selected Hourly Time-Series Products S. Saha et al. https://doi.org/10.5065/D6N877VB

MERRA-2 tavg1_2d_slv_Nx: 2d,1-Hourly,Time-Averaged,Single-Level,Assimilation,Single-Level Diagnostics V5.12.4 Global Modeling and Assimilation Office https://doi.org/10.5067/VJAFPLI1CSIV

JRA-55: Japanese 55-year Reanalysis, Daily 3-Hourly and 6-Hourly Data JMA https://doi.org/10.5065/D6HH6H41

NASA/GSFC/HSL: GLDAS Noah Land Surface Model L4 3 hourly 0.25 x 0.25 degree V2.1 Beaudoing, H. and Rodell, M. https://doi.org/10.5067/E7TYRXPJKWOQ

SMAP L4 Global 3-hourly 9\,km EASE-Grid Surface and Root Zone Soil Moisture Analysis Update, Version 7 R. Reichle et al. https://doi.org/10.5067/LWJ6TF5SZRG3

Model code and software

crspy: v1.2.1, v1.2.1 D. Power et al. https://doi.org/10.5281/zenodo.5543669

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Short summary
Reanalysis soil moisture products are a vital basis for hydrological and environmental research. Previous product evaluation is limited by the scale difference (point and grid scale). This paper adopts cosmic ray neutron sensor observations, a novel technique that provides root-zone soil moisture at field scale. In this paper, global harmonized CRNS observations were used to assess products. ERA5-Land, SMAPL4, CFSv2, CRA40 and GLEAM show better performance than MERRA2, GLDAS-Noah and JRA55.
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