Land Surface Temperature data based on YAM algorithm are freely available at
ftp://modis.cr.chiba-u.ac.jp/yyamamoto/AHILST/v0/
Details in the file format can be found in
ftp://modis.cr.chiba-u.ac.jp/yyamamoto/AHILST/v0/AHILST_v0_README.pdf
References:
Yamamoto, Y., K. Ichii, Y. Ryu, M. Kang, and S. Murayama, 2022: Uncertainty quantification in land surface temperature retrieved from Himawari-8/AHI data by operational algorithms, ISPRS Journal of Photogrammetry and Remote Sensing, 191, 171–187. DOI: 10.1016/j.isprsjprs.2022.07.008.
Yamamoto, Y., H. Ishikawa, Y. Oku, and Z. Hu, 2018: An Algorithm for Land Surface Temperature Retrieval Using Three Thermal Infrared Bands of Himawari-8, Journal of the Meteorological Society of Japan, 96B, 59–76. DOI: 10.2151/jmsj.2018-005.
Yamamoto, Y., and H. Ishikawa, 2018: Thermal Land Surface Emissivity for Retrieving Land Surface Temperature from Himawari-8, Journal of the Meteorological Society of Japan, 96B, 43–58. DOI: 10.2151/jmsj.2018-004.