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dc.contributor.authorMertikas, Stelios P.
dc.contributor.authorPapadopoulos, Ath.
dc.contributor.authorPavlis, Erricos C.
dc.date.accessioned2020-10-08T17:31:45Z
dc.date.available2020-10-08T17:31:45Z
dc.date.issued2008-10-13
dc.descriptionProceedings Volume 7105, Remote Sensing of the Ocean, Sea Ice, and Large Water Regions 2008; 71050H (2008); Event: SPIE Remote Sensing, 2008, Cardiff, Wales, United Kingdomen_US
dc.description.abstractThe dedicated calibration site for satellite radar altimeters in Gavdos has been operational since 2004. The small island of Gavdos is located along a repeating ground track of Jason satellites (crossover point No.109 ascending and No.18 descending pass and adjacent to Envisat), and additionally where the altimeter and radiometer footprints do not experience significant land intrusion. The purpose of such permanent Cal/Val facility is to calibrate the sea-surface height and ancillary measurements made by the satellite as it passes overhead, by using observations from tide gauges, GPS, DORIS and other sensors directly placed under the satellite ground tracks. Up to now, altimeter calibration at Gavdos has been performed by averaging gridded sea-level anomalies as produced by the satellite altimeter measurements and then comparing the result with the tide gauge observations. The absolute altimeter bias has thus been previously estimated to be +121 mm ±10 mm for Jason-1 satellite. In this work, the absolute altimeter bias of Jason-1 has been determined using (1) approximately one year of sea-surface height observations; (2) the GDR-B altimeter record and the seasonal effects of sea level; and (3) an alternative approach for calibration by interpolating each individual altimetric correction given by the satellite at its point of closest approach over the corresponding value of the tide gauge observation.en_US
dc.description.urihttps://www.spiedigitallibrary.org/conference-proceedings-of-spie/7105/71050H/An-alternative-procedure-for-the-estimation-of-the-altimeter-bias/10.1117/12.799495.short?SSO=1en_US
dc.format.extent11 pagesen_US
dc.genreconference papers and proceedingsen_US
dc.identifierdoi:10.13016/m2mtyu-1lva
dc.identifier.citationMertikas, Stelios P.; Papadopoulos, Ath.; Pavlis, Erricos C.; An alternative procedure for the estimation of the altimeter bias for the Jason-1 satellite using the dedicated calibration site at Gavdos; Proceedings Volume 7105, Remote Sensing of the Ocean, Sea Ice, and Large Water Regions 2008; https://www.spiedigitallibrary.org/conference-proceedings-of-spie/7105/71050H/An-alternative-procedure-for-the-estimation-of-the-altimeter-bias/10.1117/12.799495.short?SSO=1en_US
dc.identifier.urihttps://doi.org/10.1117/12.799495
dc.identifier.urihttp://hdl.handle.net/11603/19775
dc.language.isoen_USen_US
dc.publisherSPIEen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Physics Department
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.titleAn alternative procedure for the estimation of the altimeter bias for the Jason-1 satellite using the dedicated calibration site at Gavdosen_US
dc.typeTexten_US


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