Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11765/11579
Inter-comparison of integrated water vapor from satellite instruments using reference GPS data at the Iberian Peninsula
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dc.contributor.authorVaquero Martínez, Javieres_ES
dc.contributor.authorAntón, Manueles_ES
dc.contributor.authorOrtiz de Galisteo, José Pabloes_ES
dc.contributor.authorCachorro, Victoria E.es_ES
dc.contributor.authorÁlvarez-Zapatero, Pabloes_ES
dc.contributor.authorRomán, Robertoes_ES
dc.contributor.authorLoyola, D.es_ES
dc.contributor.authorJoão Costa, Maríaes_ES
dc.contributor.authorWang, Huiqunes_ES
dc.contributor.authorGonzález Abad, Gonzaloes_ES
dc.contributor.authorNöel, Stefanes_ES
dc.date.accessioned2020-04-06T11:59:23Z-
dc.date.available2020-04-06T11:59:23Z-
dc.date.issued2018-
dc.identifier.citationRemote Sensing of Environment. 2018, 204, p. 729-740es_ES
dc.identifier.issn0034-4257-
dc.identifier.issn1879-0704-
dc.identifier.urihttp://hdl.handle.net/20.500.11765/11579-
dc.description.abstractThis paper focuses on the inter-comparison of integrated water vapor (IWV) products derived from the following satellite instruments: Global Ozone Monitoring Instrument (GOME-2), Moderate-Resolution Imaging Spectroradiometer (MODIS) on the Terra and Aqua satellites, Ozone Monitoring Instrument (OMI), Spining Enhanced Visible and InfraRed Imager (SEVIRI), Atmospheric Infrared Sounder (AIRS), and Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY). IWV data from GPS in nine ground-based stations located in the Iberian Peninsula are used as reference. The study period extends from 2007 to 2012. The results show that, in general, OMI has good accuracy (pseudomedian of the relative differences between OMI and GPS IWV of ( −0.7 ± 1.1)%). However, OMI, SCIAMACHY and AIRS show higher inter-quartile range (IQR) (which indicates lower precision) than the rest of satellite instruments. Both MODIS satellite instruments and SEVIRI products tend to slightly underestimate reference IWV data while GOME-2 exhibits a notable overestimation (16.7 ± 0.8%). All satellite instruments showed a tendency to reduce IWV extreme values: low IWV is overestimated while high IWV is underestimated. As for the influence of solar zenith angle (SZA), it can be observed that GOME-2 strongly overestimates the reference for high SZA values (by around 60% for SZA 60 − 80°). OMI shows, however, a high IQR for high SZA values. Both MODIS instruments show an increase in the pseudomedian of relative differences and IQR with SZA at daytime, with more stable values at night. Seasonal dependence is mainly due to the SZA and IWV typical values in each season. In general, in summer the tendency is to underestimate with low IQR (which happens when IWV is high and SZA is low), and in winter the trend is to overestimate with high IQR (which happens when IWV is low and SZA is high). SCIAMACHY shows a high pseudomedian in summer and autumn, and lower in winter and spring. It must be noted that GOME-2 shows a higher overestimation and OMI shows a higher IQR than other satellite instruments in winter and autumn. The influence of clouds was also studied, showing an increase of IQR as cloudiness increases in all satellites. Pseudomedian also worsens as cloudiness increases, generally.es_ES
dc.description.sponsorshipThis work was supported by the Spanish Ministry of Economy and Competitiveness through project CGL2014-56255-C2. Manuel Antón thanks Ministerio de Ciencia e Innovación and Fondo Social Europeo (RYC-2011-08345) for the award of a postdoctoral grant (Ramón y Cajal). Support from the Junta de Extremadura (Research Group Grants GR15137) is gratefully acknowledged. The GOME-2/MetOp-A products were generated at DLR under the auspices of the O3MSAF project funded by EUMETSAT and national contributions. The generation of SCIAMACHY data was supported by ESA, DLR Bonn and by the University of Bremen, Germany. Work at Universidad de Valladolid is supported by projects CMT2015-66742-R and MINECO VA100U14. Work at Universidad de Granada was supported by the Andalusia Regional Government (project P12-RNM-2409) and the Spanish Ministry of Economy and Competitiveness and FEDER funds under the projects CGL2013-45410-R, CGL2016-81092-R and “Juan de la Cierva-Formación” program. Work at SAO is supported by NASA’s Atmospheric Composition: Aura Science Team program (sponsor contract number NNX14AF56G). Work at Universidade de Évora is cofunded by the European Union through the European Regional Development Fund, included in the COMPETE 2020 (Operational Program Competitiveness and Internationalization) through the ICT project (UID/GEO/04683/2013) with the reference POCI-01-0145-FEDER-007690.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.subjectWater vapores_ES
dc.subjectInter-comparisones_ES
dc.subjectIWVes_ES
dc.subjectGPSSatellitees_ES
dc.subjectMODISes_ES
dc.subjectOMIes_ES
dc.subjectGOME-2es_ES
dc.subjectSEVIRIes_ES
dc.subjectSCIAMACHYes_ES
dc.subjectAIRSes_ES
dc.titleInter-comparison of integrated water vapor from satellite instruments using reference GPS data at the Iberian Peninsulaes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://dx.doi.org/10.1016/j.rse.2017.09.028es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
Appears in Collections:Artículos científicos 2015-2018


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