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Volume 16, No. 11, November 2016, Pages 2728-2741 PDF(1.2 MB)  
doi: 10.4209/aaqr.2015.11.0630   

COMMIT in 7-SEAS/BASELInE: Operation of and Observations from a Novel, Mobile Laboratory for Measuring In-Situ Properties of Aerosols and Gases

Peter Pantina1,2, Si-Chee Tsay2, Ta-Chih Hsiao3, Adrian M. Loftus2,4, Ferret Kuo5, Chang-Feng Ou-Yang5, Andrew M. Sayer2,6, Shen-Hsiang Wang5, Neng-Huei Lin5, N. Christina Hsu2, Serm Janjai7, Somporn Chantara8, Anh X. Nguyen9

1 Science Systems and Applications, Inc., Lanham, Maryland, USA
2 NASA Goddard Space Flight Center, Greenbelt, Maryland, USA
3 Graduate Institute of Environmental Engineering, National Central University, Chung-Li 32001, Taiwan
4 ESSIC, University of Maryland, College Park, Maryland, USA
5 Department of Atmospheric Sciences, National Central University, Chung-Li 32001, Taiwan
6 GESTAR/USRA, Columbia, Maryland, USA
7 Silpakorn University, Nakhon Pathom, Thailand
8 Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
9 Vietnam Academy of Science and Technology, Hanoi, Vietnam


  • Biomass burning aerosols and trace gases affect the climate of Southeast Asia.
  • We operate over 25 trace gas and aerosol instruments to monitor air quality.
  • We outline standard operating procedures for our measurements for future reference.
  • A method of measuring aerosol hygroscopic properties has been developed and tested.
  • The datasets are unique but correlated and provide insight on aerosol behavior.



Trace gases and aerosols (particularly biomass-burning aerosols) have important implications for air quality and climate studies in Southeast Asia (SEA). This paper describes the purpose, operation, and datasets collected from NASA Goddard Space Flight Center’s (NASA/GSFC) Chemical, Optical, and Microphysical Measurements of In-situ Troposphere (COMMIT) laboratory, a mobile platform designed to measure trace gases and optical/microphysical properties of naturally occurring and anthropogenic aerosols. More importantly, the laboratory houses a specialized humidification system to characterize hygroscopic growth/enhancement, a behavior that affects aerosol properties and cloud-aerosol interactions and is generally underrepresented in the current literature. A summary of the trace gas and optical/microphysical measurements is provided, along with additional detail and analysis of data collected from the hygroscopic system during the 2015 Seven South-East Asian Studies (7-SEAS) field campaign. The results suggest that data from the platform are reliable and will complement future studies of aerosols and air quality in SEA and other regions of interest.



Keywords: Biomass-burning; Aerosol; In-situ; 7-SEAS, BASELInE; Air quality; Hygroscopicity.



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