Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11765/11730
Remote sensing of lunar aureole with a sky camera: Adding information in the nocturnal retrieval of aerosol properties with GRASP code
Title: Remote sensing of lunar aureole with a sky camera: Adding information in the nocturnal retrieval of aerosol properties with GRASP code
Authors: Román, RobertoTorres, BenjamínFuertes Marrón, DavidCachorro, Victoria E.Dubovik, OlegToledano, CarlosCazorla, A.Barreto, África RESEARCHERID Bosch, J. L.Lapyonok, TatsianaGonzález, RamiroGoloub, PhilippePerrone, M. R.Olmo Reyes, Francisco JoséFrutos, Ángel M. deAlados-Arboledas, Lucas
Keywords: Sky camera; Moon; GRASP; Aerosol; High Dynamic Range
Issue Date: 2017
Publisher: Elsevier
Citation: Remote Sensing of Environment. 2017, 196, p. 238-252
Publisher version: https://dx.doi.org/10.1016/j.rse.2017.05.013
Abstract: The use of sky cameras for nocturnal aerosol characterization is discussed in this study. Two sky cameras are configured to take High Dynamic Range (HDR) images at Granada and Valladolid (Spain). Some properties of the cameras, like effective wavelengths, sky coordinates of each pixel and pixel sensitivity, are characterized. After that, normalized camera radiances at lunar almucantar points (up to 20° in azimuth from the Moon) are obtained at three effective wavelengths from the HDR images. These normalized radiances are compared in different case studies to simulations fed with AERONET aerosol information, giving satisfactory results. The obtained uncertainty of normalized camera radiances is around 10% at 533 nm and 608 nm and 14% for 469 nm. Normalized camera radiances and six spectral aerosol optical depth values (obtained from lunar photometry) are used as input in GRASP code (Generalized Retrieval of Aerosol and Surface Properties) to retrieve aerosol properties for a dust episode over Valladolid. The retrieved aerosol properties (refractive indices, fraction of spherical particles and size distribution parameters) are in agreement with the nearest diurnal AERONET products. The calculated GRASP retrieval at night time shows an increase in coarse mode concentration along the night, while fine mode properties remained constant.
Sponsorship : This work was supported by the Andalusia Regional Government(project P12-RNM-2409) and by the“Consejería de Educación, Juntade Castilla y León”(project VA100U14); the Spanish Ministry of Econo-my and Competitiveness and FEDER funds under the projects CGL2013-45410-R, CMT2015-66742-R, CGL2016-81092-R and“Juan de la Cierva Formación”program (FJCI-2014-22052); and the European Union's Ho-rizon 2020 research and innovation programme through projectACTRIS-2 (grant agreement No 654109).
URI: http://hdl.handle.net/20.500.11765/11730
ISSN: 0034-4257
1879-0704
Appears in Collections:Artículos científicos 2015-2018


Files in This Item:
  File Description SizeFormat 
Roman_etal2017_RSE.pdf
1,64 MBAdobe PDFThumbnail
View/Open
Show full item record



Items in Arcimís are protected by Creative Commons License, unless otherwise indicated.

Arcimís Repository
Nota Legal Contacto y sugerencias