All-sky aerosol direct radiative effects at the ARM SGP site
All-sky aerosol direct radiative effect (DRE) was estimated for the first time at the Atmospheric Radiation Measurement Southern Great Plains site using multi-year ground-based observations. The NASA Langley Fu-Liou radiation model was employed. Observed inputs for the radiation model include aeroso...
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Online Access: | http://www.osti.gov/servlets/purl/1812312 https://www.osti.gov/biblio/1812312 https://doi.org/10.1029/2021jd034933 |
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ftosti:oai:osti.gov:1812312 2023-07-30T03:55:33+02:00 All-sky aerosol direct radiative effects at the ARM SGP site Balmes, K. A. Fu, Q. 2022-08-08 application/pdf http://www.osti.gov/servlets/purl/1812312 https://www.osti.gov/biblio/1812312 https://doi.org/10.1029/2021jd034933 unknown http://www.osti.gov/servlets/purl/1812312 https://www.osti.gov/biblio/1812312 https://doi.org/10.1029/2021jd034933 doi:10.1029/2021jd034933 54 ENVIRONMENTAL SCIENCES 2022 ftosti https://doi.org/10.1029/2021jd034933 2023-07-11T10:05:58Z All-sky aerosol direct radiative effect (DRE) was estimated for the first time at the Atmospheric Radiation Measurement Southern Great Plains site using multi-year ground-based observations. The NASA Langley Fu-Liou radiation model was employed. Observed inputs for the radiation model include aerosol and cloud vertical extinction profile from Raman lidar; spectral aerosol optical depth, single-scattering albedo, and asymmetry factor from Aerosol Robotic Network; cloud water content profiles from radars; temperature and water vapor profiles from radiosondes; and surface shortwave spectral albedo from radiometers. A cloudy-sky radiative closure experiment was performed. The relative mean differences between modeled and observed surface downwelling shortwave total fluxes were 6% (7%) for transparent (opaque) cloudy-skies. The estimated annual mean all-sky aerosol DRE is -2.13±0.54W m -2 at the top of atmosphere (TOA) and -5.95±0.87 W m -2 at the surface, compared to -3.00±0.58 W m -2 AND -6.85±1.00 W m -2 , respectively, under clear-sky conditions. The seasonal cycle of all-sky aerosol DRE is similar to that of the clear-sky, except with secondary influences of the clouds: The cloud radiative effect is strongest (most negative) in the spring, which reduces the all-sky aerosol DRE. The relative uncertainties in all-sky aerosol DRE due to measurement errors are generally comparable to those in clear-sky conditions except for the aerosol single-scattering albedo. Finally, the TOA all-sky aerosol DRE relative uncertainty due to aerosol single-scattering albedo uncertainty is larger than that in clear-sky, leading to a larger total relative uncertainty. The measurement errors in cloud properties have small effects on the all-sky aerosol DRE. Other/Unknown Material Aerosol Robotic Network SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) Journal of Geophysical Research: Atmospheres 126 17 |
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SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy) |
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ftosti |
language |
unknown |
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54 ENVIRONMENTAL SCIENCES |
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54 ENVIRONMENTAL SCIENCES Balmes, K. A. Fu, Q. All-sky aerosol direct radiative effects at the ARM SGP site |
topic_facet |
54 ENVIRONMENTAL SCIENCES |
description |
All-sky aerosol direct radiative effect (DRE) was estimated for the first time at the Atmospheric Radiation Measurement Southern Great Plains site using multi-year ground-based observations. The NASA Langley Fu-Liou radiation model was employed. Observed inputs for the radiation model include aerosol and cloud vertical extinction profile from Raman lidar; spectral aerosol optical depth, single-scattering albedo, and asymmetry factor from Aerosol Robotic Network; cloud water content profiles from radars; temperature and water vapor profiles from radiosondes; and surface shortwave spectral albedo from radiometers. A cloudy-sky radiative closure experiment was performed. The relative mean differences between modeled and observed surface downwelling shortwave total fluxes were 6% (7%) for transparent (opaque) cloudy-skies. The estimated annual mean all-sky aerosol DRE is -2.13±0.54W m -2 at the top of atmosphere (TOA) and -5.95±0.87 W m -2 at the surface, compared to -3.00±0.58 W m -2 AND -6.85±1.00 W m -2 , respectively, under clear-sky conditions. The seasonal cycle of all-sky aerosol DRE is similar to that of the clear-sky, except with secondary influences of the clouds: The cloud radiative effect is strongest (most negative) in the spring, which reduces the all-sky aerosol DRE. The relative uncertainties in all-sky aerosol DRE due to measurement errors are generally comparable to those in clear-sky conditions except for the aerosol single-scattering albedo. Finally, the TOA all-sky aerosol DRE relative uncertainty due to aerosol single-scattering albedo uncertainty is larger than that in clear-sky, leading to a larger total relative uncertainty. The measurement errors in cloud properties have small effects on the all-sky aerosol DRE. |
author |
Balmes, K. A. Fu, Q. |
author_facet |
Balmes, K. A. Fu, Q. |
author_sort |
Balmes, K. A. |
title |
All-sky aerosol direct radiative effects at the ARM SGP site |
title_short |
All-sky aerosol direct radiative effects at the ARM SGP site |
title_full |
All-sky aerosol direct radiative effects at the ARM SGP site |
title_fullStr |
All-sky aerosol direct radiative effects at the ARM SGP site |
title_full_unstemmed |
All-sky aerosol direct radiative effects at the ARM SGP site |
title_sort |
all-sky aerosol direct radiative effects at the arm sgp site |
publishDate |
2022 |
url |
http://www.osti.gov/servlets/purl/1812312 https://www.osti.gov/biblio/1812312 https://doi.org/10.1029/2021jd034933 |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_relation |
http://www.osti.gov/servlets/purl/1812312 https://www.osti.gov/biblio/1812312 https://doi.org/10.1029/2021jd034933 doi:10.1029/2021jd034933 |
op_doi |
https://doi.org/10.1029/2021jd034933 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
126 |
container_issue |
17 |
_version_ |
1772816273382572032 |