A084-0002
Airborne Observations of Aerosol Properties in Southeast Asia: Overview of Emissions, Cloud Processing, and Long Range Transport during NASA CAMP2Ex
Thursday, 10 December 2020
Poster
Luke D Ziemba1, Ewan Crosbie1,2, Claire E Robinson1,2, Michael Shook1, Edward Winstead2, Jian Wang3, Joshua P DiGangi1, Glenn S Diskin4, Allison Collow5, Arlindo daSilva6, Richard Anthony Ferrare1 and Chris A Hostetler1, (1)NASA Langley Research Center, Hampton, VA, United States, (2)Science Systems and Applications, Inc., Hampton, VA, United States, (3)Washington University in St Louis, Center for Aerosol Science and Engineering, Department of Energy, Environmental and Chemical Engineering, St. Louis, MO, United States, (4)NASA Langley Research Ctr, Hampton, VA, United States, (5)Universities Space Research Association Greenbelt, Greenbelt, MD, United States, (6)NASA Goddard Space Flight Center, Greenbelt, MD, United States
Abstract:
The Southwest Monsoon represents an important synoptic scale meteorological feature that modulates precipitation throughout Southeast Asia. In addition, southwesterly flow can funnel large amounts of biomass burning aerosol into heavily populated areas throughout the Philippines, mixing with urban emissions and representing a significant air quality issue. From a climate perspective, understanding interactions between these particles and clouds has important societal ramifications through frequent extreme periods of flood and drought. Here we present airborne observations made in support of the NASA CAMP2Ex (Cloud and Aerosol Monsoonal Processes-Philippines Experiment) mission aboard the Wallops Flight Facility P-3 research aircraft, based at Clark International Airport in the Luzon region of Northern Philippines. Nineteen research flights were conducted in August-October of 2019.
An extensive suite of aerosol microphysical, optical, and chemical instrumentation was deployed, along with trace gas and remote sensing measurements, to characterize aerosol emissions and their vertical/spatial variability associated with moderately convective marine cloud systems in the region. Analysis will focus on characterizing disparate aerosol sources with respect to derived chemical and optical properties relevant to global circulation modeling. For example, higher than expected mass scattering efficiencies for aged biomass burning emissions, derived from a combination of nephelometer and aerosol mass spectrometer measurements, are attributed to increased particle size and decreased density. Results will also illustrate the evolution of aerosols from Indonesian agricultural biomass burning activities into the Philippines region, in comparison with urban emissions from the megacity Manila and transported air masses from mainland Asia.
