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Validation of Sentinel-3 OLCI integrated water vapor products using regional GNSS measurements in Crete, Greece

Mertikas Stylianos, Partsinevelos Panagiotis, Tripolitsiotis Achilleas, Kokolakis Konstantinos, Petrakis Georgios, Frantzis Xenofon

Απλή Εγγραφή


URIhttp://purl.tuc.gr/dl/dias/B416EE8B-ECE8-4830-82E4-80B0461A4614-
Αναγνωριστικόhttps://doi.org/10.3390/rs12162606-
Αναγνωριστικόhttps://www.mdpi.com/2072-4292/12/16/2606/htm-
Γλώσσαen-
Μέγεθος22 pagesen
Μέγεθος8,47 megabytesen
ΤίτλοςValidation of Sentinel-3 OLCI integrated water vapor products using regional GNSS measurements in Crete, Greeceen
ΔημιουργόςMertikas Stylianosen
ΔημιουργόςΜερτικας Στυλιανοςel
ΔημιουργόςPartsinevelos Panagiotisen
ΔημιουργόςΠαρτσινεβελος Παναγιωτηςel
ΔημιουργόςTripolitsiotis Achilleasen
ΔημιουργόςΤριπολιτσιωτης Αχιλλεαςel
ΔημιουργόςKokolakis Konstantinosen
ΔημιουργόςΚοκολακης Κωνσταντινοςel
ΔημιουργόςPetrakis Georgiosen
ΔημιουργόςΠετρακης Γεωργιοςel
ΔημιουργόςFrantzis Xenofonen
ΔημιουργόςΦραντζης Ξενοφωνel
ΕκδότηςMDPIen
ΠερίληψηWater vapor is one of the essential variables in monitoring the Earth’s climate. The Ocean and Land Color Instrument (OLCI) on-board the Copernicus Sentinel-3 missions measures the Integrated Water Vapor (IWV) column over land and ocean surfaces. Post-launch calibration and validation of satellite measurements constitutes a key process in the operational phase of Earth observation satellites. This work presents the external and independent validation of OLCI-A IWV product using the regional network of continuously operating Global Navigation Satellite System (GNSS) comprised 10 stations distributed over the island of Crete in the eastern Mediterranean. The Sentinel-3A/-3B OLCI imagery that captures in a single scene the entire area of Crete has been examined. For each OLCI image, the IWV value of cloud-free pixels containing the GNSS stations have been derived and compared against simultaneous GNSS-derived measurements. The absolute as well as the relative bias between OLCI-A and OLCI-B IWV measurements have been determined. There is a good agreement between OLCI and GNSS with a bias of −0.57 mm ± 2.90 mm for OLCI(A) and +2.42 ± 3.41 mm for OLCI(B). The results of this regional validation activity are compared against other studies and the regular validation carried out at the Sentinel-3 Mission Performance Center. This work concludes that the accuracy of the OLCI IWV products is within its design requirements. The potential synergy between Sentinel-2 and Sentinel-3 IWV products is also discussed.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2021-06-29-
Ημερομηνία Δημοσίευσης2020-
Θεματική ΚατηγορίαIntegrated Water Vapor (IWV)en
Θεματική ΚατηγορίαValidationen
Θεματική ΚατηγορίαGlobal Navigation Satellite System (GNSS)en
Θεματική ΚατηγορίαCreteen
Θεματική ΚατηγορίαFiducial reference measurementsen
Βιβλιογραφική ΑναφοράS. Mertikas, P. Partsinevelos, A. Tripolitsiotis, C. Kokolakis, G. Petrakis, and X. Frantzis, “Validation of Sentinel-3 OLCI integrated water vapor products using regional GNSS measurements in Crete, Greece”, Remote Sens., vol. 12, no. 16, Aug. 2020. doi: 10.3390/rs12162606en

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