Development of Aerosol Models for Radiative Flux Calculations at ARM Sites

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The direct radiative forcing (DRF) of aerosols, the change in net radiative flux due to aerosols in non-cloudy conditions, is an essential quantity for understanding the human impact on climate change. Our work has addressed several key issues that determine the accuracy, and identify the uncertainty, with which aerosol DRF can be modeled. These issues include the accuracy of several radiative transfer models when compared to measurements and to each other in a highly controlled closure study using data from the ARM 2003 Aerosol IOP. The primary focus of our work has been to determine an accurate approach to assigning ... continued below

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Ogren, John A.; Dutton, Ellsworth G. & McComiskey, Allison C. September 30, 2006.

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Description

The direct radiative forcing (DRF) of aerosols, the change in net radiative flux due to aerosols in non-cloudy conditions, is an essential quantity for understanding the human impact on climate change. Our work has addressed several key issues that determine the accuracy, and identify the uncertainty, with which aerosol DRF can be modeled. These issues include the accuracy of several radiative transfer models when compared to measurements and to each other in a highly controlled closure study using data from the ARM 2003 Aerosol IOP. The primary focus of our work has been to determine an accurate approach to assigning aerosol properties appropriate for modeling over averaged periods of time and space that represent the observed regional variability of these properties. We have also undertaken a comprehensive analysis of the aerosol properties that contribute most to uncertainty in modeling aerosol DRF, and under what conditions they contribute the most uncertainty. Quantification of these issues enables the community to better state accuracies of radiative forcing calculations and to concentrate efforts in areas that will decrease uncertainties in these calculations in the future.

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92kb

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  • Report No.: DOE/ER/63537-F
  • Grant Number: AI02-03ER63537
  • DOI: 10.2172/936852 | External Link
  • Office of Scientific & Technical Information Report Number: 936852
  • Archival Resource Key: ark:/67531/metadc893580

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  • September 30, 2006

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 7, 2016, 2:04 p.m.

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Ogren, John A.; Dutton, Ellsworth G. & McComiskey, Allison C. Development of Aerosol Models for Radiative Flux Calculations at ARM Sites, report, September 30, 2006; United States. (digital.library.unt.edu/ark:/67531/metadc893580/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.