{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,14]],"date-time":"2025-10-14T00:46:45Z","timestamp":1760402805961,"version":"build-2065373602"},"reference-count":56,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2020,4,30]],"date-time":"2020-04-30T00:00:00Z","timestamp":1588204800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The 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 Iza\u00f1a 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\u2013AOD\u2013LUT method with an uncertainty of \u00b10.01 \u00b1 0.13*AOD. ZEN-R52 PWV extracted using a new LUT technique was compared with quasi-simultaneous (\u00b130 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 \u00b10.089 cm or \u00b10.036 + 0.061*PWV for PWV &lt;1 cm). This comparison analysis was extended using two PWV datasets from the same CE318 reference instrument at Iza\u00f1a Observatory: one obtained from AERONET (CE318-AERONET), and another one using a specific calibration of the 940-nm channel performed in this work at Iza\u00f1a Atmospheric Research Center Observatory (CE318-IARC), which improves the PWV product.<\/jats:p>","DOI":"10.3390\/rs12091424","type":"journal-article","created":{"date-parts":[[2020,5,4]],"date-time":"2020-05-04T14:00:43Z","timestamp":1588600843000},"page":"1424","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Column Integrated Water Vapor and Aerosol Load Characterization with the New ZEN-R52 Radiometer"],"prefix":"10.3390","volume":"12","author":[{"given":"Antonio Fernando","family":"Almansa","sequence":"first","affiliation":[{"name":"Cimel Electronique, 75011 Paris, France"},{"name":"Iza\u00f1a Atmospheric Research Center (IARC), State Meteorological Agency of Spain (AEMET), 38001 Santa Cruz de Tenerife, Spain"},{"name":"Grupo de \u00d3ptica Atmosf\u00e9rica, Dpto. de F\u00edsica Te\u00f3rica At\u00f3mica y \u00d3ptica, Universidad de Valladolid, 47001 Valladolid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1843-8302","authenticated-orcid":false,"given":"Emilio","family":"Cuevas","sequence":"additional","affiliation":[{"name":"Iza\u00f1a Atmospheric Research Center (IARC), State Meteorological Agency of Spain (AEMET), 38001 Santa Cruz de Tenerife, Spain"}]},{"given":"\u00c1frica","family":"Barreto","sequence":"additional","affiliation":[{"name":"Cimel Electronique, 75011 Paris, France"},{"name":"Iza\u00f1a Atmospheric Research Center (IARC), State Meteorological Agency of Spain (AEMET), 38001 Santa Cruz de Tenerife, Spain"},{"name":"Grupo de \u00d3ptica Atmosf\u00e9rica, Dpto. de F\u00edsica Te\u00f3rica At\u00f3mica y \u00d3ptica, Universidad de Valladolid, 47001 Valladolid, Spain"}]},{"given":"Benjam\u00edn","family":"Torres","sequence":"additional","affiliation":[{"name":"Univ. Lille, CNRS, UMR 8518, LOA\u2014Laboratoire d\u2019Optique Atmosph\u00e9rique, F-59000 Lille, France"}]},{"given":"Omaira Elena","family":"Garc\u00eda","sequence":"additional","affiliation":[{"name":"Iza\u00f1a Atmospheric Research Center (IARC), State Meteorological Agency of Spain (AEMET), 38001 Santa Cruz de Tenerife, Spain"}]},{"given":"Rosa","family":"Delia Garc\u00eda","sequence":"additional","affiliation":[{"name":"Iza\u00f1a Atmospheric Research Center (IARC), State Meteorological Agency of Spain (AEMET), 38001 Santa Cruz de Tenerife, Spain"},{"name":"Grupo de \u00d3ptica Atmosf\u00e9rica, Dpto. de F\u00edsica Te\u00f3rica At\u00f3mica y \u00d3ptica, Universidad de Valladolid, 47001 Valladolid, Spain"}]},{"given":"Cristian","family":"Velasco-Merino","sequence":"additional","affiliation":[{"name":"Grupo de \u00d3ptica Atmosf\u00e9rica, Dpto. de F\u00edsica Te\u00f3rica At\u00f3mica y \u00d3ptica, Universidad de Valladolid, 47001 Valladolid, Spain"}]},{"given":"Victoria Eugenia","family":"Cachorro","sequence":"additional","affiliation":[{"name":"Grupo de \u00d3ptica Atmosf\u00e9rica, Dpto. de F\u00edsica Te\u00f3rica At\u00f3mica y \u00d3ptica, Universidad de Valladolid, 47001 Valladolid, Spain"}]},{"given":"Alberto","family":"Berj\u00f3n","sequence":"additional","affiliation":[{"name":"Iza\u00f1a Atmospheric Research Center (IARC), State Meteorological Agency of Spain (AEMET), 38001 Santa Cruz de Tenerife, Spain"},{"name":"Grupo de \u00d3ptica Atmosf\u00e9rica, Dpto. de F\u00edsica Te\u00f3rica At\u00f3mica y \u00d3ptica, Universidad de Valladolid, 47001 Valladolid, Spain"}]},{"given":"Manuel","family":"Mallorqu\u00edn","sequence":"additional","affiliation":[{"name":"Sieltec Canarias S.L., 38230 La Laguna, Spain"}]},{"given":"C\u00e9sar","family":"L\u00f3pez","sequence":"additional","affiliation":[{"name":"Sieltec Canarias S.L., 38230 La Laguna, Spain"}]},{"given":"Ram\u00f3n","family":"Ramos","sequence":"additional","affiliation":[{"name":"Iza\u00f1a Atmospheric Research Center (IARC), State Meteorological Agency of Spain (AEMET), 38001 Santa Cruz de Tenerife, Spain"}]},{"given":"Carmen","family":"Guirado-Fuentes","sequence":"additional","affiliation":[{"name":"Iza\u00f1a Atmospheric Research Center (IARC), State Meteorological Agency of Spain (AEMET), 38001 Santa Cruz de Tenerife, Spain"},{"name":"Grupo de \u00d3ptica Atmosf\u00e9rica, Dpto. de F\u00edsica Te\u00f3rica At\u00f3mica y \u00d3ptica, Universidad de Valladolid, 47001 Valladolid, Spain"}]},{"given":"Ram\u00f3n","family":"Negrillo","sequence":"additional","affiliation":[{"name":"Sieltec Canarias S.L., 38230 La Laguna, Spain"}]},{"given":"\u00c1ngel M\u00e1ximo","family":"de Frutos","sequence":"additional","affiliation":[{"name":"Grupo de \u00d3ptica Atmosf\u00e9rica, Dpto. de F\u00edsica Te\u00f3rica At\u00f3mica y \u00d3ptica, Universidad de Valladolid, 47001 Valladolid, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2020,4,30]]},"reference":[{"key":"ref_1","unstructured":"Stocker, T.F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S.K., Boschung, J., Nauels, A., Xia, Y., Bex, V., and Midgley, P.M. 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