Up-scaling dust point sources in the Navy Aerosol Analysis and Prediction System (NAAPS) and the Coupled Ocean Atmosphere Mesoscale Prediction System (COAMPS) models
Abstract
In 2001 the Naval Research Laboratory (NRL) started identifying and locating dust emission areas in Southwest Asia using the satellite derived NRL Dust Enhancement Product (DEP). The 1-km and 500-m resolution of the DEP allows us to identify the sources of individual plume heads (often measuring 10 km or less across). Cataloguing the individual point sources led to the development of the NRL high-resolution (1 km) dust source database (DSD) for Southwest Asia. Using the same methodology, six years (2007-2012) of East Asia DEP imagery have been analyzed resulting in the NRL high-resolution (1 km) dust source database (DSD) for East Asia. In this paper we will investigate the dust distribution and dust mass budget with respect to grid resolution in the Navy's global and mesoscale aerosol models, NAAPS and COAMPS, run at resolutions ranging from one degree to 3 km over Southwest Asia and East Asia. We will explore how the dust budget is affected by up-scaling the DSD. We will also explore the effects of changes in the dynamical forcing at the different model resolutions. The simulations will be verified with satellite imagery, AERONET, and surface station data.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2012
- Bibcode:
- 2012AGUFM.A41L..07W
- Keywords:
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- 0305 ATMOSPHERIC COMPOSITION AND STRUCTURE / Aerosols and particles;
- 0365 ATMOSPHERIC COMPOSITION AND STRUCTURE / Troposphere: composition and chemistry;
- 3311 ATMOSPHERIC PROCESSES / Clouds and aerosols