NDLI: Validation of ADEOS-II GLI ocean color products using in-situ observations

Content Provider	Springer Nature Link
Author	Murakami, Hiroshi Sasaoka, Kosei Hosoda, Kohtaro Fukushima, Hajime Toratani, Mitsuhiro Frouin, Robert Mitchell, B. Greg Kahru, Mati Deschamps, Pierre Yves Clark, Dennis Flora, Stephanie Kishi, Motoaki Saitoh, Sei Ichi Asanuma, Ichio Tanaka, Akihiko Sasaki, Hiroaki Yokouchi, Katsumi Kiyomoto, Yoko Saito, Hiroaki Dupouy, Cécile Siripong, Absornsuda Matsumura, Satsuki Ishizaka, Joji
Copyright Year	2006
Abstract	The Global Imager (GLI) aboard the Advanced Earth Observing Satellite-II (ADEOS-II) made global observations from 2 April 2003 to 24 October 2003. In cooperation with several institutes and scientists, we obtained quality controlled match-ups between GLI products and in-situ data, 116 for chlorophyll-a concentration (CHLA), 249 for normalized water-leaving radiance (nLw) at 443 nm, and 201 for aerosol optical thickness at 865 nm (Tau_865) and Angstrom exponent between 520 and 865 nm (Angstrom). We evaluated the GLI ocean color products and investigated the causes of errors using the match-ups. The median absolute percentage differences (MedPD) between GLI and in-situ data were 14.1–35.7% for nLws at 380–565 nm, 52.5–74.8% nLws at 625–680 nm, 47.6% for Tau_865, 46.2% for Angstrom, and 46.6% for CHLA, values that are comparable to the ocean-color products of other sensors. We found that some errors in GLI products are correlated with observational conditions; nLw values were underestimated when nLw at 680 nm was high, CHLA was underestimated in absorptive aerosol conditions, and Tau_865 was overestimated in sunglint regions. The error correlations indicate that we need to improve the retrievals of the optical properties of absorptive aerosols and seawater and sea surface reflection for further applications, including coastal monitoring and the combined use of products from multiple sensors.
Starting Page	373
Ending Page	393
Page Count	21
File Format	PDF
ISSN	09168370
Journal	Journal of Oceanography
Volume Number	62
Issue Number	3
e-ISSN	1573868X
Language	English
Publisher	Kluwer Academic Publishers-Consultants Bureau
Publisher Date	2006-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Remote sensing validation ocean color atmospheric correction chlorophyll ADEOS-2 GLI match-up Oceanography Hydrobiology
Content Type	Text
Resource Type	Article
Subject	Oceanography

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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