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Title: Shortwave Radiative Closure Studies for Clear Skies During the Atmospheric Radiation Measurement 2003 Aerosol Intensive Observation Period

Abstract

The Department of Energy's Atmospheric Radiation Measurement (ARM) program sponsored a large aerosol intensive observation period (AIOP) to study aerosol during the month of May 2003 around the Southern Great Plains (SGP) Climate Research Facility (CRF) in north central Oklahoma. Redundant measurements of aerosol optical properties were made using different techniques at the surface as well as in vertical profile with sensors aboard two aircraft. One of the principal motivations for this experiment was to resolve the disagreement between models and measurements of diffuse horizontal broadband shortwave irradiance at the surface, especially for modest aerosol loading. This paper focuses on using the redundant aerosol and radiation measurements during this AIOP to compare direct beam and diffuse horizontal broadband shortwave irradiance measurements and models at the surface for a wide range of aerosol cases that occurred during 30 clear-sky periods on 13 days of May 2003. Models and measurements are compared over a large range of solar-zenith angles. Six different models are used to assess the relative agreement among them and the measurements. Better agreement than previously achieved appears to be the result of better specification of input parameters and better measurements of irradiances than in prior studies. Biases between modeledmore » and measured direct irradiances are in the worst case 1%, and biases between modeled and measured diffuse irradiances are less than 1.9%.« less

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
891111
Report Number(s):
PNNL-SA-44897
TRN: US200621%%7
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Journal of Geophysical Research. D. (Atmospheres), 111(D14):D14S90
Additional Journal Information:
Journal Name: Journal of Geophysical Research. D. (Atmospheres), 111(D14):D14S90
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; AEROSOLS; AIRCRAFT; CLIMATE MODELS; OPTICAL PROPERTIES; SOLAR RADIATION; OKLAHOMA; diffuse shortwave irradiance; direct shortwave irradiance; radiative transfer models

Citation Formats

Michalsky, Joseph J, Anderson, Gail, Barnard, James C, Delamere, Jennifer, Gueymard, C, Kato, Seiji, Kiedron, P, McComiskey, A, and Ricchiazzi, P. Shortwave Radiative Closure Studies for Clear Skies During the Atmospheric Radiation Measurement 2003 Aerosol Intensive Observation Period. United States: N. p., 2006. Web. doi:10.1029/2005JD006341.
Michalsky, Joseph J, Anderson, Gail, Barnard, James C, Delamere, Jennifer, Gueymard, C, Kato, Seiji, Kiedron, P, McComiskey, A, & Ricchiazzi, P. Shortwave Radiative Closure Studies for Clear Skies During the Atmospheric Radiation Measurement 2003 Aerosol Intensive Observation Period. United States. https://doi.org/10.1029/2005JD006341
Michalsky, Joseph J, Anderson, Gail, Barnard, James C, Delamere, Jennifer, Gueymard, C, Kato, Seiji, Kiedron, P, McComiskey, A, and Ricchiazzi, P. 2006. "Shortwave Radiative Closure Studies for Clear Skies During the Atmospheric Radiation Measurement 2003 Aerosol Intensive Observation Period". United States. https://doi.org/10.1029/2005JD006341.
@article{osti_891111,
title = {Shortwave Radiative Closure Studies for Clear Skies During the Atmospheric Radiation Measurement 2003 Aerosol Intensive Observation Period},
author = {Michalsky, Joseph J and Anderson, Gail and Barnard, James C and Delamere, Jennifer and Gueymard, C and Kato, Seiji and Kiedron, P and McComiskey, A and Ricchiazzi, P},
abstractNote = {The Department of Energy's Atmospheric Radiation Measurement (ARM) program sponsored a large aerosol intensive observation period (AIOP) to study aerosol during the month of May 2003 around the Southern Great Plains (SGP) Climate Research Facility (CRF) in north central Oklahoma. Redundant measurements of aerosol optical properties were made using different techniques at the surface as well as in vertical profile with sensors aboard two aircraft. One of the principal motivations for this experiment was to resolve the disagreement between models and measurements of diffuse horizontal broadband shortwave irradiance at the surface, especially for modest aerosol loading. This paper focuses on using the redundant aerosol and radiation measurements during this AIOP to compare direct beam and diffuse horizontal broadband shortwave irradiance measurements and models at the surface for a wide range of aerosol cases that occurred during 30 clear-sky periods on 13 days of May 2003. Models and measurements are compared over a large range of solar-zenith angles. Six different models are used to assess the relative agreement among them and the measurements. Better agreement than previously achieved appears to be the result of better specification of input parameters and better measurements of irradiances than in prior studies. Biases between modeled and measured direct irradiances are in the worst case 1%, and biases between modeled and measured diffuse irradiances are less than 1.9%.},
doi = {10.1029/2005JD006341},
url = {https://www.osti.gov/biblio/891111}, journal = {Journal of Geophysical Research. D. (Atmospheres), 111(D14):D14S90},
number = ,
volume = ,
place = {United States},
year = {Thu Jul 20 00:00:00 EDT 2006},
month = {Thu Jul 20 00:00:00 EDT 2006}
}