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Column integrated water vapor and aerosol load characterization with the new ZEN-R52 radiometer
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dc.contributor.authorAlmansa Rodríguez, Antonio Fernandoes_ES
dc.contributor.authorCuevas Agulló, Emilioes_ES
dc.contributor.authorBarreto Velasco, Áfricaes_ES
dc.contributor.authorTorres, Benjamínes_ES
dc.contributor.authorGarcía Rodríguez, Omaira Elenaes_ES
dc.contributor.authorGarcía Cabrera, Rosa Deliaes_ES
dc.contributor.authorVelasco Merino, Cristianes_ES
dc.contributor.authorCachorro, Victoria E.es_ES
dc.contributor.authorBerjón, Albertoes_ES
dc.contributor.authorMallorquín Díaz, Manueles_ES
dc.contributor.authorLópez, Césares_ES
dc.contributor.authorRamos López, Ramónes_ES
dc.contributor.authorGuirado-Fuentes, Carmenes_ES
dc.contributor.authorNegrillo, Ramónes_ES
dc.contributor.authorFrutos Baraja, Ángel Máximo dees_ES
dc.identifier.citationRemote Sensing. 2020, 12(9), 1424es_ES
dc.description.abstractThe study shows the first results of the column-integrated water vapor retrieved by the new ZEN-R52 radiometer. This new radiometer has been specifically designed to monitor aerosols and atmospheric water vapor with a high degree of autonomy and robustness in order to allow the expansion of the observations of these parameters to remote desert areas from ground-based platforms. The ZEN-R52 device shows substantial improvements compared to the previous ZEN-R41 prototype: a smaller field of view, an increased signal-to-noise ratio, better stray light rejection, and an additional channel (940 nm) for precipitable water vapor (PWV) retrieval. PWV is inferred from the ZEN-R52 Zenith Sky Radiance (ZSR) measurements using a lookup table (LUT) methodology. The improvement of the new ZEN-R52 in terms of ZSR was verified by means of a comparison with the ZEN-R41, and with the Aerosol Robotic Network (AERONET) Cimel CE318 (CE318-AERONET) at Izaña Observatory, a Global Atmosphere Watch (GAW) high mountain station (Tenerife, Canary Islands, Spain), over a 10-month period (August 2017 to June 2018). ZEN-R52 aerosol optical depth (AOD) was extracted by means of the ZEN–AOD–LUT method with an uncertainty of ±0.01 ± 0.13*AOD. ZEN-R52 PWV extracted using a new LUT technique was compared with quasi-simultaneous (±30 s) Fourier Transform Infrared (FTIR) spectrometer measurements as reference. A good agreement was found between the two instruments (PWV means a relative difference of 9.1% and an uncertainty of ±0.089 cm or ±0.036 + 0.061*PWV for PWV <1 cm). This comparison analysis was extended using two PWV datasets from the same CE318 reference instrument at Izaña Observatory: one obtained from AERONET (CE318-AERONET), and another one using a specific calibration of the 940-nm channel performed in this work at Izaña Atmospheric Research Center Observatory (CE318-IARC), which improves the PWV product.es_ES
dc.description.sponsorshipThis work has been developed within the framework of the activities of the World Meteorological Organization (WMO) Commission for Instruments and Methods of Observations (CIMO) Izaña Testbed for Aerosols andWater Vapor Remote Sensing Instruments. AERONET sun photometers at Izaña were calibrated within theAERONETEurope TNA, supported by the European Community Research Infrastructure Action under the FP7 ACTRIS grant, agreement no. 262254. The authors are grateful to the Spanish Ministry of Science, Innovation and Universities for its support through the ePOLAAR project (RTI2018-097864-B-I00).es_ES
dc.publisherMultidisciplinary Digital Publishing Institutees_ES
dc.rightsLicencia CC: Reconocimiento CC BYes_ES
dc.subjectPrecipitable water vapores_ES
dc.subjectAerosol optical depthes_ES
dc.subjectZenith sky radiancees_ES
dc.subjectRemote sensinges_ES
dc.subjectLookup tablees_ES
dc.subjectRadiative transferes_ES
dc.titleColumn integrated water vapor and aerosol load characterization with the new ZEN-R52 radiometeres_ES
Appears in Collections:Artículos científicos 2019-2022

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