Evaluation of AERONET Precipitable Water Vapor Versus Microwave Radiometry, GPS, and Radiosondes at ARM Sites
In this paper we present comparisons of Aerosol Robotic Network (AERONET) precipitable water vapor (W) retrievals from Sun photometers versus radiosonde observations and other ground-based retrieval techniques such as microwave radiometry (MWR) and GPS. The comparisons make use of the extensive meas...
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ftnasantrs:oai:casi.ntrs.nasa.gov:20140017706 2023-05-15T13:06:23+02:00 Evaluation of AERONET Precipitable Water Vapor Versus Microwave Radiometry, GPS, and Radiosondes at ARM Sites Andrade, Marcos Holben, Brent N. Lyamani, Hassan Pinker, Rachel Ramirez, Daniel Perez Alados-Arboledas, Lucas Smirnov, Alexander Whiteman, David N. Unclassified, Unlimited, Publicly available August 11, 2014 application/pdf http://hdl.handle.net/2060/20140017706 unknown Document ID: 20140017706 http://hdl.handle.net/2060/20140017706 Copyright, Distribution as joint owner in the copyright CASI Geosciences (General) GSFC-E-DAA-TN17575 Journal of Geophysical Research: Atmospheres(ISSN 2169-8996); Volume 119; Issue 15; 9596-9613 2014 ftnasantrs 2016-03-12T23:53:50Z In this paper we present comparisons of Aerosol Robotic Network (AERONET) precipitable water vapor (W) retrievals from Sun photometers versus radiosonde observations and other ground-based retrieval techniques such as microwave radiometry (MWR) and GPS. The comparisons make use of the extensive measurements made within the U.S. Department of Energy Atmospheric Radiation Measurement Program (ARM), mainly at their permanent sites located at the Southern Great Plains (Oklahoma, U.S.), Nauru Islands, and Barrow (Alaska, U.S.). These places experience different types of weather which allows the comparison of W under different conditions. Radiosonde and microwave radiometry data were provided by the ARM program while the GPS data were obtained from the SOUMINET network. In general,Wobtained by AERONET is lower than those obtained by MWR and GPS by approximately 6.0-9.0% and approximately 6.0-8.0%, respectively. The AERONET values are also lower by approximately 5% than those obtained from the numerous balloon-borne radiosondes launched at the Southern Great Plains. These results point toward a consistent dry bias in the retrievals of W by AERONET of approximately 5-6% and a total estimated uncertainty of 12-15%. Differences with respect to MWR retrievals are a function of solar zenith angle pointing toward a possible bias in the MWR retrievals. Finally, the ability of AERONET precipitable water vapor retrievals to provide long-term records of W in diverse climate regimes is demonstrated. Other/Unknown Material Aerosol Robotic Network Barrow Alaska NASA Technical Reports Server (NTRS) |
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NASA Technical Reports Server (NTRS) |
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Geosciences (General) |
spellingShingle |
Geosciences (General) Andrade, Marcos Holben, Brent N. Lyamani, Hassan Pinker, Rachel Ramirez, Daniel Perez Alados-Arboledas, Lucas Smirnov, Alexander Whiteman, David N. Evaluation of AERONET Precipitable Water Vapor Versus Microwave Radiometry, GPS, and Radiosondes at ARM Sites |
topic_facet |
Geosciences (General) |
description |
In this paper we present comparisons of Aerosol Robotic Network (AERONET) precipitable water vapor (W) retrievals from Sun photometers versus radiosonde observations and other ground-based retrieval techniques such as microwave radiometry (MWR) and GPS. The comparisons make use of the extensive measurements made within the U.S. Department of Energy Atmospheric Radiation Measurement Program (ARM), mainly at their permanent sites located at the Southern Great Plains (Oklahoma, U.S.), Nauru Islands, and Barrow (Alaska, U.S.). These places experience different types of weather which allows the comparison of W under different conditions. Radiosonde and microwave radiometry data were provided by the ARM program while the GPS data were obtained from the SOUMINET network. In general,Wobtained by AERONET is lower than those obtained by MWR and GPS by approximately 6.0-9.0% and approximately 6.0-8.0%, respectively. The AERONET values are also lower by approximately 5% than those obtained from the numerous balloon-borne radiosondes launched at the Southern Great Plains. These results point toward a consistent dry bias in the retrievals of W by AERONET of approximately 5-6% and a total estimated uncertainty of 12-15%. Differences with respect to MWR retrievals are a function of solar zenith angle pointing toward a possible bias in the MWR retrievals. Finally, the ability of AERONET precipitable water vapor retrievals to provide long-term records of W in diverse climate regimes is demonstrated. |
format |
Other/Unknown Material |
author |
Andrade, Marcos Holben, Brent N. Lyamani, Hassan Pinker, Rachel Ramirez, Daniel Perez Alados-Arboledas, Lucas Smirnov, Alexander Whiteman, David N. |
author_facet |
Andrade, Marcos Holben, Brent N. Lyamani, Hassan Pinker, Rachel Ramirez, Daniel Perez Alados-Arboledas, Lucas Smirnov, Alexander Whiteman, David N. |
author_sort |
Andrade, Marcos |
title |
Evaluation of AERONET Precipitable Water Vapor Versus Microwave Radiometry, GPS, and Radiosondes at ARM Sites |
title_short |
Evaluation of AERONET Precipitable Water Vapor Versus Microwave Radiometry, GPS, and Radiosondes at ARM Sites |
title_full |
Evaluation of AERONET Precipitable Water Vapor Versus Microwave Radiometry, GPS, and Radiosondes at ARM Sites |
title_fullStr |
Evaluation of AERONET Precipitable Water Vapor Versus Microwave Radiometry, GPS, and Radiosondes at ARM Sites |
title_full_unstemmed |
Evaluation of AERONET Precipitable Water Vapor Versus Microwave Radiometry, GPS, and Radiosondes at ARM Sites |
title_sort |
evaluation of aeronet precipitable water vapor versus microwave radiometry, gps, and radiosondes at arm sites |
publishDate |
2014 |
url |
http://hdl.handle.net/2060/20140017706 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
Aerosol Robotic Network Barrow Alaska |
genre_facet |
Aerosol Robotic Network Barrow Alaska |
op_source |
CASI |
op_relation |
Document ID: 20140017706 http://hdl.handle.net/2060/20140017706 |
op_rights |
Copyright, Distribution as joint owner in the copyright |
_version_ |
1766003226582188032 |