East Asia-Pacific longwave/shortwave downward radiation at the surface data set (2016-2020)

East Asia-Pacific longwave/shortwave downward radiation at the surface data set (2016-2020)

Surface downward radiation (SDR), including shortwave downward radiation (SWDR) and longwave downward radiation (LWDR), is of great importance to energy and climate studies. Considering the lack of reliable SDR data with a high spatiotemporal resolution in the East Asia-Pacific (EAP) region, we derived SWDR and LWDR at 10-min and 0.05° resolutions for this region from 2016-2020 based on the next-generation geostationary satellite Himawari-8 (H-8). The SDR product is unique in terms of its all-sky features, high accuracy and high resolution levels. The cloud effect is fully considered in the SDR product, and the influence of high aerosol loadings and topography on the SWDR are considered. Compared to benchmark products of the radiation, such as Clouds and the Earth’s Radiant Energy System (CERES) and the European Centre for Medium-Range Weather Forecasts (ECMWF) next-generation reanalysis (ERA5), and the Global Land Surface Satellite (GLASS), not only is the resolution of the new SDR product notably much higher but the product accuracy is also higher than that of those products. In particular, hourly and daily root mean square errors of hourly and daily of the new SWDR are 104.9 and 31.5 Wm-2, respectively, which are much smaller than those of CERES (at 121.6 and 38.6 Wm-2, respectively), ERA5 (at 176.6 and 39.5 Wm-2, respectively) and GLASS (daily of 36.5 Wm-2). Meanwhile, RMSEs of hourly and daily values of the new LWDR are 19.6 and 14.4 Wm-2, respectively, which are comparable to that of CERES and ERA5, and even better over high altitude regions.

File naming and required software

File name:
H08_ YYYYMMDD_ hhmm_ SWDR.nc
H08_ YYYYMMDD_ hhmm_ LWDR.nc
Among them,
H08: main data source from the Himawari-8 satellite
YYYYMMDD_ HHMM: year, month, day, hour, minute (UTC)
SWDR: shortwave downward radiation at the surface
LWDR: longwave downward radiation at the surface
NC: netcdf4 format
For example: H08_20160101_0230_SWDR.nc represents the SWDR at 2:30 on January 1, 2016. For more details, refer to the self description information inside the NC data.
Usage: it can be read by ArcGIS or python. Y = scale_ factor * DN + add_ offset。 Where y is the real physical quantity - SWDR/LWDR (wm-2), DN is the digital quantization value, scale_factor and add_offset is stored inside the NC file.

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

Letu, H., Wang, T. (2021). East Asia-Pacific longwave/shortwave downward radiation at the surface data set (2016-2020). National Tibetan Plateau Data Center, DOI: 10.11888/Meteoro.tpdc.271729. CSTR: 18406.11.Meteoro.tpdc.271729. (Download the reference: RIS | Bibtex )

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

References literature

1.Letu, H., Nakajima, T.Y., Wang, T.X., Shang, H.Z., Ma, R., Yang, K., Baran, A.J., Riedi, J., Ishimoto, H., Yoshida, M., Shi, C., Khatri, P., Du, Y.H., Chen, L.F., & Shi, J.C. (2021). A new benchmark for surface radiation products over the East Asia-Pacific region retrieved from the Himawari-8/AHI next-generation geostationary satellite. Bulletin of the American Meteorological Society. (View Details )

Support Program

National Key R&D Program of China (No:2018YFA0605401)

Second Tibetan Plateau Scientific Expedition Program

National Natural Science Foundation of China (No:42025504;42022008;41771395)

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

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Geographic coverage
East: -160.00 West: 80.00
South: -60.00 North: 60.00
  • Temporal resolution: Hourly
  • Spatial resolution: 1km - 10km
  • File size: 2,244,045 MB
  • Views: 664
  • Downloads: 41
  • Access: Open Access
  • Temporal coverage: 2016-01-01 To 2020-12-31
  • Updated time: 2021-11-22
: LETU Husi   WANG Tianxing  

Distributor: National Tibetan Plateau Data Center

Email: data@itpcas.ac.cn

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