Absorption properties of biomass burning aerosol: A closure study using the I3RC community radiative transfer model and ARCTAS measurements
Abstract
Aerosol absorption properties and the spectral aerosol single scattering albedo (SSA) are important parameters in predicting aerosol radiative and climate effects. However, the characterization of these parameters remains challenging. The NASA Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) mission yields a rich set of measurement to characterize the spectral optical properties of boreal biomass burning aerosol and allow a detailed evaluation of SSA retrieved from matching modeled and measured spectral downward irradiance. Multiple plume-crossing aircraft measurements aboard the NASA P-3B also provide an opportunity to examine spatial and temporal variability in SSA. Downward spectral solar irradiances were measured and simulated with the Spectral Solar Flux Radiometer (SSFR) and the Intercomparison of 3D Radiation Codes (I3RC), respectively. The aerosol optical depth was measured with the Ames Airborne Tracking Sunphotometer (AATS-14) aboard the P-3B aircraft. Size distributions and optical properties were measured with in-situ instruments of the University of Hawaii (UH) for aerosols sampled through a solid diffuser inlet. This poster will present an estimation of temporal and spatial variability of simulated aerosol absorption property using in-situ measurements.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2010
- Bibcode:
- 2010AGUFM.A21B0033G
- Keywords:
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- 0305 ATMOSPHERIC COMPOSITION AND STRUCTURE / Aerosols and particles;
- 0360 ATMOSPHERIC COMPOSITION AND STRUCTURE / Radiation: transmission and scattering