Global PEW Land Evapotranspiration Data Set (1982-2018)

Global PEW Land Evapotranspiration Data Set (1982-2018)

This data set is a global surface evapotranspiration product based on the PEW model. The PEW model is a water energy based surface energy balance model based on the assumption of equal proportion. Its principle is to couple the water heat balance framework based on the assumption of equal proportion on the Priestley Taylor (PT) evapotranspiration algorithm. PEW model can consider the influence of water balance constraint and energy budget process at the same time, which makes the simulation accuracy of PEW model improved compared with previous models to a certain extent. The input data of PEW include the meteorological and soil moisture changes of ERA5 land dataset. The time span of this dataset is from 1982 to 2018. The time resolution is month by month and the spatial resolution is 0.1 °. This data set can provide a basis for studying the long-term water cycle and climate change.

File naming and required software

The data is stored in tiff format, and the file name is "yyyymm. tif", such as "200207PEW_ET. tif", which corresponds to the average of ET elements in July 2002; The time resolution is month by month; The spatial resolution is 0.1 °.

Data Citations Data citation guideline What's data citation?
Cite as:

Fu, J., Wang, W. (2022). Global PEW Land Evapotranspiration Data Set (1982-2018). National Tibetan Plateau Data Center, DOI: 10.11888/Terre.tpdc.272874. CSTR: 18406.11.Terre.tpdc.272874. (Download the reference: RIS | Bibtex )

Related Literatures:

1. Fu, J., Wang, W., Shao, Q., Xing, W., Cao, M., Wei, J., Chen Z., & Nie, W. (2022). Improved global evapotranspiration estimates using proportionality hypothesis-based water balance constraints. Remote Sensing Environ. 279, 113140. View Details | Bibtex)

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

Copyright & License

To respect the intellectual property rights, protect the rights of data authors,expand servglacials 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the data in the research results generated by using the data (including published papers, articles, data products, and unpublished research reports, data products and other results).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.

Example of acknowledgement statement is included below: The data set is provided by National Tibetan Plateau Data Center (

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

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Geographic coverage
East: 180.00 West: -180.00
South: -60.00 North: 90.00
  • Temporal resolution: Monthly
  • Spatial resolution: 0.05 º - 0.1º
  • File size: 10,956 MB
  • Views: 1,102
  • Downloads: 58
  • Access: Open Access
  • Temporal coverage: 1982-01-01 To 2018-12-01
  • Updated time: 2022-10-28
: FU Jianyu    WANG Weiguang   

Distributor: National Tibetan Plateau Data Center


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