Marine boundary layer dust and pollutant transport associated with the passage of a frontal system over eastern Asia

Timothy S Bates; Patricia K Quinn; Derek J Coffman; David S Covert; Theresa L Miller; James E Johnson; Gregory R Carmichael; Itsushi Uno; Sergio A Guazzotti; David A Sodeman; Kimberly A Prather; Monica Rivera; Lynn M Russell; John T Merrill

doi:10.1029/2003JD004094

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Marine boundary layer dust and pollutant transport associated with the passage of a frontal system over eastern Asia

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Marine boundary layer dust and pollutant transport associated with the passage of a frontal system over eastern Asia

Timothy S Bates, Patricia K Quinn, Derek J Coffman, David S Covert, Theresa L Miller, James E Johnson, Gregory R Carmichael, Itsushi Uno, Sergio A Guazzotti, David A Sodeman, …

Journal of Geophysical Research: Atmospheres, Vol.109(D19), pp.D19S19-n/a

10/16/2004

DOI: 10.1029/2003JD004094

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Abstract

Aerosol chemical composition and number size distributions were measured aboard the R/V Ronald H. Brown during the Asian Pacific Regional Aerosol Characterization Experiment (ACE‐Asia) from 14 March to 20 April 2001. This manuscript focuses on the prefrontal and postfrontal air masses sampled aboard the ship in the Sea of Japan between 6 and 15 April 2001 to illustrate the different chemical sources/mixtures off the coast of Asia resulting from the contrasting meteorological transport patterns. The prefrontal air masses had a dominant accumulation mode composed of pollution and volcanic aerosols. The aerosol was predominately ammonium sulfate and organic carbon. Minor amounts of dust were present in the marine boundary layer (MBL) as a result of subsidence from a pronounced Taklimakan dust aerosol layer aloft. The sea salt in both the submicron and supermicron modes was highly depleted in chloride from reaction with sulfuric and nitric acid vapors. The passage of a large low‐pressure center, surrounded by a widespread distribution of airborne dust, on 10 April brought elevated concentrations of submicron and supermicron Gobi desert dust to the ship. The supermicron dust particles contained high concentrations of sulfate, nitrate, organic, and elemental carbon. The MBL aerosol properties and controlling processes described here provide data to evaluate and refine chemical transport models.

aerosol size distributions

aerosol chemistry

ACE‐Asia

Details

Title: Subtitle: Marine boundary layer dust and pollutant transport associated with the passage of a frontal system over eastern Asia
Creators: Timothy S Bates - University of Washington
Patricia K Quinn - University of Washington
Derek J Coffman - University of Washington
David S Covert - University of Washington
Theresa L Miller - University of Washington
James E Johnson - University of Washington
Gregory R Carmichael - University of Iowa
Itsushi Uno - Kyushu University
Sergio A Guazzotti - University of California, San Diego
David A Sodeman - University of California, San Diego
Kimberly A Prather - University of California, San Diego
Monica Rivera - Princeton University
Lynn M Russell - Princeton University
John T Merrill - University of Rhode Island
Resource Type: Journal article
Publication Details: Journal of Geophysical Research: Atmospheres, Vol.109(D19), pp.D19S19-n/a
DOI: 10.1029/2003JD004094
ISSN: 0148-0227
eISSN: 2156-2202
Number of pages: 18
Language: English
Date published: 10/16/2004
Academic Unit: Civil and Environmental Engineering; Nursing; Chemical and Biochemical Engineering
Record Identifier: 9984003993002771

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