The new sun-sky-lunar Cimel CE318-T multiband photometer-a comprehensive performance evaluation
This paper presents the new photometer CE318-T, able to perform daytime and night-time photometric measurements using the sun and the moon as light source. Therefore, this new device permits a complete cycle of diurnal aerosol and water vapour measurements valuable to enhance atmospheric monitoring...
Published in: | Atmospheric Measurement Techniques |
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Format: | Article in Journal/Newspaper |
Language: | English |
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European Geosciences Union
2016
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Online Access: | https://hdl.handle.net/20.500.11765/1076 |
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ftaemet:oai:repositorio.aemet.es:20.500.11765/1076 2024-06-23T07:45:00+00:00 The new sun-sky-lunar Cimel CE318-T multiband photometer-a comprehensive performance evaluation Barreto Velasco, África Cuevas Agulló, Emilio Granados-Muñoz, María José Alados Arboledas, Lucas Romero Campos, Pedro Miguel Gröbner, Julian Kouremeti, Natalia Almansa Rodríguez, Antonio Fernando Stone, Tom Toledano, Carlos Román, Roberto Sorokin, Mikhail Holben, Brent N. Canini, Marius Yela González, Margarita 2016 application/pdf https://hdl.handle.net/20.500.11765/1076 eng eng European Geosciences Union https://dx.doi.org/10.5194/amt-9-631-2016 info:eu-repo/grantAgreement/EC/FP7/262254 Atmospheric Measurement Techniques. 2010, 9(2), p. 631-654 1867-1381 1867-8548 http://hdl.handle.net/20.500.11765/1076 Licencia CC: Reconocimiento CC BY info:eu-repo/semantics/openAccess Photometer CE318-T Fotómetros multibanda Vapor de agua Aerosoles info:eu-repo/semantics/article 2016 ftaemet https://doi.org/20.500.11765/107610.5194/amt-9-631-2016 2024-06-03T14:17:56Z This paper presents the new photometer CE318-T, able to perform daytime and night-time photometric measurements using the sun and the moon as light source. Therefore, this new device permits a complete cycle of diurnal aerosol and water vapour measurements valuable to enhance atmospheric monitoring to be extracted. In this study we have found significantly higher precision of triplets when comparing the CE318-T master instrument and the Cimel AErosol RObotic NETwork (AERONET) master (CE318-AERONET) triplets as a result of the new CE318-T tracking system. Regarding the instrument calibration, two new methodologies to transfer the calibration from a reference instrument using only daytime measurements (Sun Ratio and Sun-Moon gain factor techniques) are presented and discussed. These methods allow the reduction of the previous complexities inherent to nocturnal calibration. A quantitative estimation of CE318-T AOD uncertainty by means of error propagation theory during daytime revealed AOD uncertainties (uDAOD) for Langley-calibrated instruments similar to the expected values for other reference instruments (0.002–0.009). We have also found uDAOD values similar to the values reported in sun photometry for field instruments ( 0.015). In the case of the night-time period, the CE318-T-estimated standard combined uncertainty (uNAOD) is dependent not only on the calibration technique but also on illumination conditions and the instrumental noise. These values range from 0.011–0.018 for Lunar Langley-calibrated instruments to 0.012–0.021 for instruments calibrated using the Sun Ratio technique. In the case of moon-calibrated instruments using the Sun-Moon gain factor method and suncalibrated using the Langley technique, we found uNAOD ranging from 0.016 to 0.017 (up to 0.019 in 440 nm channel), not dependent on any lunar irradiance model. The AERONET sun photometers at Izaña have been calibrated within the AERONETEurope TNA, supported by the European Community-Research Infrastructure Action under the FP7 ACTRIS grant ... Article in Journal/Newspaper Aerosol Robotic Network ARCIMÍS (Archivo Climatológico y Meteorológico Institucional - AEMET, Agencia Estatal de Meteorología) Triplets ENVELOPE(-59.750,-59.750,-62.383,-62.383) Atmospheric Measurement Techniques 9 2 631 654 |
institution |
Open Polar |
collection |
ARCIMÍS (Archivo Climatológico y Meteorológico Institucional - AEMET, Agencia Estatal de Meteorología) |
op_collection_id |
ftaemet |
language |
English |
topic |
Photometer CE318-T Fotómetros multibanda Vapor de agua Aerosoles |
spellingShingle |
Photometer CE318-T Fotómetros multibanda Vapor de agua Aerosoles Barreto Velasco, África Cuevas Agulló, Emilio Granados-Muñoz, María José Alados Arboledas, Lucas Romero Campos, Pedro Miguel Gröbner, Julian Kouremeti, Natalia Almansa Rodríguez, Antonio Fernando Stone, Tom Toledano, Carlos Román, Roberto Sorokin, Mikhail Holben, Brent N. Canini, Marius Yela González, Margarita The new sun-sky-lunar Cimel CE318-T multiband photometer-a comprehensive performance evaluation |
topic_facet |
Photometer CE318-T Fotómetros multibanda Vapor de agua Aerosoles |
description |
This paper presents the new photometer CE318-T, able to perform daytime and night-time photometric measurements using the sun and the moon as light source. Therefore, this new device permits a complete cycle of diurnal aerosol and water vapour measurements valuable to enhance atmospheric monitoring to be extracted. In this study we have found significantly higher precision of triplets when comparing the CE318-T master instrument and the Cimel AErosol RObotic NETwork (AERONET) master (CE318-AERONET) triplets as a result of the new CE318-T tracking system. Regarding the instrument calibration, two new methodologies to transfer the calibration from a reference instrument using only daytime measurements (Sun Ratio and Sun-Moon gain factor techniques) are presented and discussed. These methods allow the reduction of the previous complexities inherent to nocturnal calibration. A quantitative estimation of CE318-T AOD uncertainty by means of error propagation theory during daytime revealed AOD uncertainties (uDAOD) for Langley-calibrated instruments similar to the expected values for other reference instruments (0.002–0.009). We have also found uDAOD values similar to the values reported in sun photometry for field instruments ( 0.015). In the case of the night-time period, the CE318-T-estimated standard combined uncertainty (uNAOD) is dependent not only on the calibration technique but also on illumination conditions and the instrumental noise. These values range from 0.011–0.018 for Lunar Langley-calibrated instruments to 0.012–0.021 for instruments calibrated using the Sun Ratio technique. In the case of moon-calibrated instruments using the Sun-Moon gain factor method and suncalibrated using the Langley technique, we found uNAOD ranging from 0.016 to 0.017 (up to 0.019 in 440 nm channel), not dependent on any lunar irradiance model. The AERONET sun photometers at Izaña have been calibrated within the AERONETEurope TNA, supported by the European Community-Research Infrastructure Action under the FP7 ACTRIS grant ... |
format |
Article in Journal/Newspaper |
author |
Barreto Velasco, África Cuevas Agulló, Emilio Granados-Muñoz, María José Alados Arboledas, Lucas Romero Campos, Pedro Miguel Gröbner, Julian Kouremeti, Natalia Almansa Rodríguez, Antonio Fernando Stone, Tom Toledano, Carlos Román, Roberto Sorokin, Mikhail Holben, Brent N. Canini, Marius Yela González, Margarita |
author_facet |
Barreto Velasco, África Cuevas Agulló, Emilio Granados-Muñoz, María José Alados Arboledas, Lucas Romero Campos, Pedro Miguel Gröbner, Julian Kouremeti, Natalia Almansa Rodríguez, Antonio Fernando Stone, Tom Toledano, Carlos Román, Roberto Sorokin, Mikhail Holben, Brent N. Canini, Marius Yela González, Margarita |
author_sort |
Barreto Velasco, África |
title |
The new sun-sky-lunar Cimel CE318-T multiband photometer-a comprehensive performance evaluation |
title_short |
The new sun-sky-lunar Cimel CE318-T multiband photometer-a comprehensive performance evaluation |
title_full |
The new sun-sky-lunar Cimel CE318-T multiband photometer-a comprehensive performance evaluation |
title_fullStr |
The new sun-sky-lunar Cimel CE318-T multiband photometer-a comprehensive performance evaluation |
title_full_unstemmed |
The new sun-sky-lunar Cimel CE318-T multiband photometer-a comprehensive performance evaluation |
title_sort |
new sun-sky-lunar cimel ce318-t multiband photometer-a comprehensive performance evaluation |
publisher |
European Geosciences Union |
publishDate |
2016 |
url |
https://hdl.handle.net/20.500.11765/1076 |
long_lat |
ENVELOPE(-59.750,-59.750,-62.383,-62.383) |
geographic |
Triplets |
geographic_facet |
Triplets |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_relation |
https://dx.doi.org/10.5194/amt-9-631-2016 info:eu-repo/grantAgreement/EC/FP7/262254 Atmospheric Measurement Techniques. 2010, 9(2), p. 631-654 1867-1381 1867-8548 http://hdl.handle.net/20.500.11765/1076 |
op_rights |
Licencia CC: Reconocimiento CC BY info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.11765/107610.5194/amt-9-631-2016 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
9 |
container_issue |
2 |
container_start_page |
631 |
op_container_end_page |
654 |
_version_ |
1802645284777361408 |