Spectral Radiative Forcing of the ACE-Asia Aerosol Observed During the NOAA Ship R. H. Brown Cruise
Abstract
We use radiometric observations made from the NOAA Ship R. H. Brown during ACE-Asia to determine the impact of the aerosols on the infrared radiative forcing, and how it relates to the solar forcing. Measurements of aerosol optical depth, column ozone, and the atmospheric temperature/water vapor structure are used to diagnose the aerosol radiative signature observed for the cruise from Hawaii to the Sea of Japan. Comparisons are made of the high-resolution spectral measurements made by the Marine-Atmospheric Emitted Radiance Interferometer (M-AERI) and line-by-line calculations by the Line-By-Line Radiative Transfer Model (LBLRTM). Samples of the dust from the region are analyzed to determine its infrared complex refractive index. These data are used in calculations by the Discrete-Dipole Approximation (DDA) to determine the effect of nonsphericity on the aerosol scattering properties. The overall aim of these research thrusts is to develop a consistent, integrated picture of the aerosol radiative forcing across the visible and infrared portions of the spectra. This will improve our understanding of both the role of aerosols in the climate system, and how they influence satellite remote sensing of surface signatures.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2001
- Bibcode:
- 2001AGUFM.A32D..09V
- Keywords:
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- 0305 Aerosols and particles (0345;
- 4801);
- 3359 Radiative processes