Published September 8, 2022 | Version v1
Dataset Open

A GeoNEX-based 1km hourly land surface downward shortwave radiation (DSR) and photosynthetically active radiation (PAR) product

Description

The dataset is produced by employing a well-established physical-based look-up table (LUT) approach to the GeoNEX gridded top-of-atmosphere bidirectional reflectance factor data acquired by the Advanced Himawari Imager (AHI) and Advanced Baseline Imager (ABI) sensors. It consists of DSR and PAR over both AHI and ABI coverage at an hourly temporal step with a 1km spatial resolution. Full details about the work are under review and can be cited as  Li, R., Wang, D., Wang, W., and Nemani, R.: A GeoNEX-based high spatiotemporal resolution product of land surface downward shortwave radiation and photosynthetically active radiation, Earth Syst. Sci. Data Discuss. [preprint], https://doi.org/10.5194/essd-2022-319,  in review, 2022.

Due to the file size restrictions, only some sample files are shared here. The full dataset can be accessed through the NASA Advanced Supercomputing Division GeoNEX data portal, using the following URLs: https://data.nas.nasa.gov/geonex/geonexdata/GOES16/GEONEX-L2/DSR-PAR/ https://data.nas.nasa.gov/geonex/geonexdata/HIMAWARI8/GEONEX-L2/DSR-PAR/

Notes

It is a gridded product following the convention of the standard GeoNEX products. Each tile contains 600x600 pixels, representing a region of 6° by 6°. Detailed information about the gridding system can be founded at https://www.nasa.gov/geonex/dataproducts. The temporal resolution of the products is every 1 hour.  Each file contains three scientific data sets: DSR hourly array, PAR_hourly array, and quality control (QC) array. Users should use the filling value, -9999, to check if DSR/PAR is successfully retrieved or not. The scale factor, 0.1, should be multiplied before use. QC is used to indicate the input source of surface reflectance data. 0: from the MCD43 product; 1: from the climatology data.

Files

h07v00.zip

Files (3.9 GB)

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md5:7b8e5c89cad951a01654f1f1182cd199
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md5:0cb1be37fdc3d64c71588eb6b5ae1923
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