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A long-term (1980-2017) land evaporation (E) product with a spatial resolution of 0.25 degree. This is a merged product from three model-based E products using the Reliability Ensemble Averaging (REA) method which minimizes errors. These include the fifth-generation ECMWF Re-Analysis (ERA5), the second Modern-Era Retrospective analysis for Research and Applications (MERRA2), and the Global Land Data Assimilation System (GLDAS).

To facilitate user-friendly access and download the dataset is stored individually for each year in a separate file. These files contain daily and monthly mean data (e.g., REA_1980_day.nc and REA_1980_mon.nc). The dataset is stored in NetCDF format, containing the variable E, representing land evaporation, produced in millimeters (mm) as a unit. There are three dimensions included in the dataset: longitude, latitude, and time, with the longitude ranging from -179.875E to 179.875E, the latitude from -59.875N to 89.875N. Complete time coverage is from January 1, 1980, to December 31, 2017.

File naming and required software

To facilitate user-friendly access and download the dataset is stored individually for each year in a separate file. These files contain daily and monthly mean data (e.g., REA_yyyy_day.nc and REA_yyyy_mon.nc), where yyyy represents year, such as REA_1980_day.nc represents the NetCDF file to describe daily land evaporation in 1980.
Data reading method: NetCDF software or computer language can read the data, such as MATLAB, python, etc.

Data Citations Data citation guideline What's data citation?

Lu, J., Wang, G., Chen, T., Li, S., Hagan, D., Kattel, G., Peng, J., Jiang, T., Su, B. (2021). A harmonized global land evaporation dataset from model-based products covering 1980-2017. A Big Earth Data Platform for Three Poles, DOI: 10.5281/zenodo.4595941. (Download the reference： RIS | Bibtex )

1. Lu, J., Wang, G., Chen, T., Li, S., Hagan, D.F.T., Kattel, G., Peng, J., Jiang, T., & Su, B. (2021). A harmonized global land evaporation dataset from model-based products covering 1980–2017, Earth Syst. Sci. Data, 13, 5879–5898.( View Details | Bibtex)

Using this data, the data citation is required to be referenced and the related literatures are suggested to be cited.

Support Program

National Natural Science Foundation of China

Postgraduate Research and Practice Innovation Program of Jiangsu Province (No:KYCX21_0957)

China Key Technologies Research and Development Program (No:2017YFA0603701)

Copyright & License

To respect the intellectual property rights, protect the rights of data authors, expand services of the data center, and evaluate the application potential of data, data users should clearly indicate the source of the data and the author of the data in the research results generated by using the data (including published papers, articles, data products, and unpublished research reports, data products and other results). For re-posting (second or multiple releases) data, the author must also indicate the source of the original data.

License： This work is licensed under an Attribution 4.0 International (CC BY 4.0)

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