Name
Title | ||
|---|---|---|
Validation of Sentinel-3 OLCI Integrated Water Vapor Products Using Regional GNSS Measurements in Crete, Greece. |
Abstract | ||
|---|---|---|
Water 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. |
Year | DOI | Venue |
|---|---|---|
2020 | 10.3390/rs12162606 | REMOTE SENSING |
Keywords | DocType | Volume |
IWV,validation,GNSS,Crete,fiducial reference measurements | Journal | 12 |
Issue | Citations | PageRank |
16 | 0 | 0.34 |
References | Authors | |
0 | 6 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Stelios P. Mertikas | 1 | 4 | 2.51 |
| Panagiotis Partsinevelos | 2 | 9 | 3.38 |
| Achilles Tripolitsiotis | 3 | 11 | 3.05 |
| Costas Kokolakis | 4 | 1 | 0.71 |
| George Petrakis | 5 | 1 | 0.70 |
| Xenophon Frantzis | 6 | 3 | 1.46 |