Analysis of aerosol particle size distributions observed during AEROSE V campaign

Mariana Guereque, University of Texas at El Paso


The African continent is the principal contributor of mineral aerosols into the atmosphere. It is also a significant source of carbonaceous aerosols resulting from rampant biomass burning activities. Both aerosol types have a profound impact on climate change and are an important factor in climate modeling, regional weather forecasting, as well as health-impact studies. Due to their importance, it is beneficial to characterize the transport and evolution of these aerosols from their origins in Africa, across the Atlantic Ocean and into the Americas. In-situ aerosol number distributions were collected during the 2009 Aerosols and Ocean Science Expeditions (AEROSE) V campaign, in the tropical Atlantic Ocean. For the purpose of establishing air mass type, HYSPLIT 7-day backward trajectories were generated from July 12, 2009 to August 4, 2009 on a daily basis, on 6-hour intervals: at 00hrs, 06hrs, 12hrs and 18hrs; at five different elevations: 10m, 100m, 500m, 1000m and 500m. This amounted to a total of four hundred and forty trajectories. This research presented statistical analysis of air mass occurrences per regimen type for 6-hour intervals contrasted with daily averaged air mass types. To do so, each trajectory was backtracked to their source region and air type regimen was established according to NAAPS/FLAMBE/MODIS forecasts and datasets. ^

Subject Area

Atmospheric Sciences

Recommended Citation

Guereque, Mariana, "Analysis of aerosol particle size distributions observed during AEROSE V campaign" (2012). ETD Collection for University of Texas, El Paso. AAI1513105.