Dataset
Himawari-8/9 AHI Land Surface Reflectance (LSR) Dataset
We are in the process of updating the data, expected to be completed by the end of January 2025.（updated 2025.1.8）
The Full Disk AHI LSR dataset can be obtained from an FTP server,
ftp (anonymous): modis.cr.chiba-u.ac.jp/ichii/SEND_NEW/H8AHI_SR
Uploaded: Y2018 ～ Y2023, UTC 23:00–13:50
In progress: Y2024 (updated 2025.1.8)
Programme: Y2017 ==> Y2016
We also provide datasets (3 pixels x 3 pixels) for AsiaFlux and OzFlux sites. Please feel free to contact Prof.Ichii(ichii@chiba-u.jp) and Wei(liwei97@chiba-u.jp) for access.
Click on me for data format and tutorial
Data description
An atmospheric correction process was performed for Band01 to 06 of the CEReS Grid AHI using the look-up table (LUT) method based on the Second Simulation of a Satellite Signal in the Solar Spectrum vector (6SV) radiative transfer model (RTM) and the Copernicus Atmosphere Monitoring Service Reanalysis (CAMSRA) - European Centre for Medium-Range Weather Forecasts (ECMWF) Atmospheric Composition Reanalysis 4 (EAC4).
Cloud mask data were generated using the Yamamoto et al. (2018, 2022) algorithm, which sets thresholds for reflectance and brightness temperature in visible and infrared band data to identify clouds. The algorithm provides a cloud mask of the FD region with a spatial resolution of 0.02°.
Citation
LSR
- Li W, K. Ichii, B. Zhang, Y. Yamamoto, W. Yang, T. Miura, H. Yoshioka, M. Matsuoka, K. Obata, R.C. Sharma, H. Yamamoto, H. Irie, P. Khatri, B. Liley, I. Morino, H. Takenaka, A. Higuchi (2025) Estimation and Evaluation of Land Surface Reflectance from a Next-Generation Geostationary Meteorological Satellite, Himawari-8/9 AHI. Journal of Meteorological Society of Japan. http://doi.org/10.2151/jmsj.2025-005. (Open Access)
- Zhang B., K. Ichii, W. Li, Y. Yamamoto, W. Yang, R.C. Sharma, H. Yoshioka, K. Obata, M. Matsuoka, T. Miura (2025) Evaluation of Himawari-8 AHI land surface reflectance at mid-latitudes using LEO sensors with off-nadir observation. Remote Sensing of Environment, 316, 114491. https://doi.org/10.1016/j.rse.2024.114491. (Open Access)
Cloud Mask
- Yamamoto, Y., Ishikawa, H., Oku, Y., Hu, Z., 2018. An algorithm for land surface temperature retrieval using three thermal infrared bands of Himawari-8. Journal of Meteorological Society of Japan 96B, 59−76. https://doi.org/10.2151/jmsj.2018-005
- Yamamoto, Y., Ichii, K., Ryu, Y., Kang, M., Murayama, S., 2022. Uncertainty quantification in land surface temperature retrieved from Himawari-8/AHI data by operational algorithms. ISPRS