The effects of atmospheric sulfur on the radiative properties of convective clouds: a limited area modeling study

C. Andronache; L. J. Donner; V. Ramaswamy; C. J. Seman; R. S. Hemler

doi:10.1029/98GL01028

The effects of atmospheric sulfur on the radiative properties of convective clouds: a limited area modeling study

C. Andronache, L. J. Donner, V. Ramaswamy, C. J. Seman, R. S. Hemler

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Abstract

Convective clouds in tropical areas can be sensitive to the atmospheric sulfate loading, particularly during enhanced sulfate episodes. This assertion is supported by simulations with a high resolution limited area non-hydrostatic model (LAN) employing a detailed sulfate-cloud microphysics scheme, applied to estimate the effects of sulfate on convective clouds in a case study from the Tropical Ocean Global Atmosphere Coupled Ocean Atmosphere Response Experiment (TOGA COARE). Results show that a change in sulfate loading for scenarios using the minimum to the maximum observed values produces a change in the average net flux of shortwave radiation above clouds. This time-average change was estimated between -1.1 and -0.3 Wm^-2 over the integration domain.

Original language	English (US)
Pages (from-to)	1423-1426
Number of pages	4
Journal	Geophysical Research Letters
Volume	25
Issue number	9
DOIs	https://doi.org/10.1029/98GL01028
State	Published - May 1 1998

All Science Journal Classification (ASJC) codes

Geophysics
Earth and Planetary Sciences(all)

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title = "The effects of atmospheric sulfur on the radiative properties of convective clouds: a limited area modeling study",

abstract = "Convective clouds in tropical areas can be sensitive to the atmospheric sulfate loading, particularly during enhanced sulfate episodes. This assertion is supported by simulations with a high resolution limited area non-hydrostatic model (LAN) employing a detailed sulfate-cloud microphysics scheme, applied to estimate the effects of sulfate on convective clouds in a case study from the Tropical Ocean Global Atmosphere Coupled Ocean Atmosphere Response Experiment (TOGA COARE). Results show that a change in sulfate loading for scenarios using the minimum to the maximum observed values produces a change in the average net flux of shortwave radiation above clouds. This time-average change was estimated between -1.1 and -0.3 Wm-2 over the integration domain.",

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T2 - a limited area modeling study

AU - Andronache, C.

AU - Donner, L. J.

AU - Ramaswamy, V.

AU - Seman, C. J.

AU - Hemler, R. S.

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N2 - Convective clouds in tropical areas can be sensitive to the atmospheric sulfate loading, particularly during enhanced sulfate episodes. This assertion is supported by simulations with a high resolution limited area non-hydrostatic model (LAN) employing a detailed sulfate-cloud microphysics scheme, applied to estimate the effects of sulfate on convective clouds in a case study from the Tropical Ocean Global Atmosphere Coupled Ocean Atmosphere Response Experiment (TOGA COARE). Results show that a change in sulfate loading for scenarios using the minimum to the maximum observed values produces a change in the average net flux of shortwave radiation above clouds. This time-average change was estimated between -1.1 and -0.3 Wm-2 over the integration domain.

AB - Convective clouds in tropical areas can be sensitive to the atmospheric sulfate loading, particularly during enhanced sulfate episodes. This assertion is supported by simulations with a high resolution limited area non-hydrostatic model (LAN) employing a detailed sulfate-cloud microphysics scheme, applied to estimate the effects of sulfate on convective clouds in a case study from the Tropical Ocean Global Atmosphere Coupled Ocean Atmosphere Response Experiment (TOGA COARE). Results show that a change in sulfate loading for scenarios using the minimum to the maximum observed values produces a change in the average net flux of shortwave radiation above clouds. This time-average change was estimated between -1.1 and -0.3 Wm-2 over the integration domain.

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The effects of atmospheric sulfur on the radiative properties of convective clouds: a limited area modeling study

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