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In the context of global change, the spatio-temporal continuous high-quality high-resolution long time series precipitation data set is of great significance for understanding the global "water carbon energy" and biogeochemical cycle mechanism. The daily total volume controlled merging and disaggregation algorithm (DTVCMDA) proposed in this study effectively considers the characteristics of continuous space-time and high spatial and temporal resolution of reanalysed precipitation data, as well as the high quality of ground analysis data, A set of AERA5 Asia (0.1 °, hourly, 1951-2015, Asia) precipitation data set with high quality and high spatial and temporal resolution for more than 70 years of long time series in Asia has been produced. The main features of the dataset are as follows: (1) AERA5 Asia is a set of data sets with high resolution, high quality, space-time continuity and long time series; (2) AERA5 Asia is significantly better than IMERG Final and ERA5 Land precipitation data, especially in terms of system deviation. In general, the deviation of AERA5 Asia, IMERG Final and ERA5 Land compared with ground observation is~5%,~11% and~20% respectively; (3) In extreme heavy rainfall (such as typhoons "Tamei" and "Tiantu"), the quality of AERA5 Asia is also significantly better than ERA5 Land and IMERG Final.

AERA5 Asia will provide stable and reliable precipitation data support for relevant research in the weather, climate, hydrology and other fields in Asia, especially in China.

File naming and required software

File name: AERA5 precipitation data is stored in GeoTiff format, and the file is compressed and stored in year. The compressed file name is "yyyy. 7z", where yyyy represents year. After decompression, the GeoTiff file name is "AERA5_yyyymmddhh.tif", where yyyy represents the year, mm represents the month, dd represents the day, and hh represents the hour, such as AERA5_ 201501010000.tif represents that this document describes the precipitation estimation (UTC) in Asia from 0:00 on January 1, 2015 to 1:00 on January 1, 2015, AERA5_ 201501010030.tif means that this document describes the precipitation estimation in Asia from 0:30 on January 1, 2015 to 1:30 on January 1, 2015, in mm/h. To obtain hourly precipitation, average the two files in the hourly period.
Data reading method: AIMERG precipitation data set in GeoTiff format can be read by MATLAB and other tools, or opened directly by ArcGIS and ENVI software.

Data Citations Data citation guideline What's data citation?

Ma, Z., Ma, Y., Ma, W., Xu, J. (2022). AERA5-Asia: A Long-Term Asian Precipitation Dataset (0.1°, 1-hourly, 1951–2015, Asia) Anchoring the ERA5-Land under the Total Volume Control by APHRODITE. A Big Earth Data Platform for Three Poles, DOI: 10.11888/Atmos.tpdc.272900. CSTR: 18406.11.Atmos.tpdc.272900. (Download the reference： RIS | Bibtex )

1. Ma, Z.Q.*, Xu, J.T., Ma, Y.M.*, Zhu, S.Y., He, K., Zhang, S.J., Ma, W.Q., & Xu, X.D. (2022). AERA5-Asia: A long-term Asian precipitation dataset (0.1°, 1 hourly, 1951–2015, Asia) anchoring the ERA5-Land under the total volume control by APHRODITE. Bulletin of American Meteorological Society, 103 (4). DOI: 10.1175/BAMS-D-20-0328.1.( 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

Second Tibetan Plateau Scientific Expedition Program

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

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