{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,1]],"date-time":"2026-08-01T02:23:08Z","timestamp":1785550988692,"version":"3.56.0"},"reference-count":30,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2016,2,23]],"date-time":"2016-02-23T00:00:00Z","timestamp":1456185600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The Advanced Himawari Imager (AHI) on-board Himawari-8, which was launched on 7 October 2014, is the first geostationary instrument housed with a solar diffuser to provide accurate onboard calibrated data for the visible and near-infrared (VNIR) bands. In this study, the Ray-matching and collocated Deep Convective Cloud (DCC) methods, both of which are based on incidently collocated homogeneous pairs between AHI and Suomi NPP (S-NPP) Visible Infrared Imaging Radiometer Suite (VIIRS), are used to evaluate the calibration difference between these two instruments. While the Ray-matching method is used to examine the reflectance difference over the all-sky collocations with similar viewing and illumination geometries, the near lambertian collocated DCC pxiels are used to examine the difference for the median or high reflectance scenes. Strong linear relationships between AHI and VIIRS can be found at all the paired AHI and VIIRS bands. Results of both methods indicate that AHI radiometric calibration accuracy agrees well with VIIRS data within 5% for B1-4 and B6 at mid and high reflectance scenes, while AHI B5 is generally brighter than VIIRS by ~6%\u20138%. No apparent East-West viewing angle dependent calibration difference can be found at all the VNIR bands. Compared to the Ray-matching method, the collocated DCC method provides less uncertainty of inter-calibration results at near-infrared (NIR) bands. As AHI has similar optics and calibration designs to the GOES-R Advanced Baseline Imager (ABI), which is currently scheduled to launch in fall 2016, the on-orbit AHI data provides a unique opportunity to develop, test and examine the cal\/val tools developed for ABI.<\/jats:p>","DOI":"10.3390\/rs8030165","type":"journal-article","created":{"date-parts":[[2016,2,23]],"date-time":"2016-02-23T10:57:06Z","timestamp":1456225026000},"page":"165","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":57,"title":["Radiometric Inter-Calibration between Himawari-8 AHI and S-NPP VIIRS for the Solar Reflective Bands"],"prefix":"10.3390","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8343-0863","authenticated-orcid":false,"given":"Fangfang","family":"Yu","sequence":"first","affiliation":[{"name":"Earth Resources Technology Inc., 14401 Sweitzer Lane Suite 300, Laurel, MD 20707, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7804-5650","authenticated-orcid":false,"given":"Xiangqian","family":"Wu","sequence":"additional","affiliation":[{"name":"National Oceanic and Atmospheric Administration (NOAA)\/National Environmental Satellite, Data, and Information Service (NESDIS)\/Center for Satellite Applications and Research (STAR), 5830 University Research Court, College Park, MD 20740, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2016,2,23]]},"reference":[{"key":"ref_1","unstructured":"Takahashi, M., Andou, A., Date, K., Hosaka, K., Mori, N., Murata, H., Okuyama, A., Tabata, T., Yoshino, R., and Bessho, K. 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