Crossroads of Tropical Meteorology and Atmospheric Composition in the Maritime Continent: Recent Field Results from the 7SEAS Program

Monday, 15 December 2014
Jeffrey S. Reid1, Samual Atwood2, James R Campbell3, Boon Ning Chew4, Michael J Garay5, Brent N Holben6, Robert Holz7, Edward J. Hyer3, Haflidi Jonsson8, Sonia M Kreidenweis9, Nofel Lagrosas10, Peng Lynch3, Mastura Mahmud11, Gemma Narisma10, Derek J Posselt12, Elizabeth A Reid13, Santo V Salinas Cortijo4, James Simpas10, Francis J Turk5 and Jun Wang14, (1)Marine Meteorology Division, Monterey, CA, United States, (2)Colorado State University, Atmospheric Science, Fort Collins, CO, United States, (3)Naval Research Lab, Monterey, CA, United States, (4)National University of Singapore, CRISP, Singapore, Singapore, (5)Jet Propulsion Laboratory, Pasadena, CA, United States, (6)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (7)UW SSEC, Madison, WI, United States, (8)Naval Postgraduate School, CIRPAS, Monterey, CA, United States, (9)Colorado State Univ, Fort Collins, CO, United States, (10)Ateneo de Manila University, Manila Observatory, Quezon City, Philippines, (11)Universiti Kebangsaan, Earth Observation Center, BaBangi Selangor, Malaysia, (12)University of Michigan Ann Arbor, Ann Arbor, MI, United States, (13)Naval Research Lab Monterey, Monterey, CA, United States, (14)University of Nebraska - Lincoln, Lincoln, NE, United States
Since 2009, seasonal field campaigns have been conducted by the 7 Southeast Asian Studies (7SEAS) project throughout the Maritime Continent to study the lifecycle and meteorological impacts of aerosol particles. However given the complex interactions between air, land and sea in the region, aerosol impact studies are significantly confounded by a host of meteorological phenomena. At the same time, aerosol and other compositional studies add a new perspective on atmospheric processes. In this presentation we briefly outline aerosol lifecycle connections to the phases of ENSO, IOD, and the MJO as observed in measurements made through networks and intensive operations periods. However, our focus is on the ramification of these observations on aerosol-cloud relationships at more regional and local levels. Connections between the MJO and tropical cyclone formation as well as the advection of lower free tropospheric dry layers frame aerosol-convection relationships. The frequent formation of trans-MC squall lines and their associated cold pools significantly modifies common conceptual models of aerosol-cloud-precipitation interaction. We close with a list of suggested tropical meteorology research topics and questions which we believe are most relevant to understanding atmospheric composition in this region.