4.7 Article

First detailed observations of long-range transported dust over the northern South China Sea

Journal

ATMOSPHERIC ENVIRONMENT
Volume 45, Issue 27, Pages 4804-4808

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2011.04.077

Keywords

Asian dust; South China Sea; Aerosol optical thickness (AOT); 7SEAS; Lidar; Dongsha

Funding

  1. NASA
  2. Taiwan EPA [EPA-99-FA11-03-A097]
  3. National Science Council of Taiwan [NSC98-2811-M-008-073]

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Trans-Pacific Asian dust transport has been well documented, but little is known about dust invasion to the South China Sea (SCS). This study presents the first detailed characterization of dust aerosols transported to the northern SCS. On 21 March 2010, a strong Asian dust storm affected large areas from the Gobi deserts to the West Pacific, including Taiwan and Hong Kong, and was also observed by a comprehensive set of instruments at Dongsha Island, a small island (about 2 km(2), 20 degrees 42'52 '' N, 116 degrees 43'51 '' E) in the northern SCS. Aerosol measurements including particle mass concentrations, size distribution, optical properties, hygroscopicity, and vertical profiles help depict the evolution of this dust event. Our results indicate that the dust particles were mixed with anthropogenic and marine aerosols, and transported within 250 m above ground level. The long-range transport of Asian dust to the northern SCS could significantly impact the ecosystems in the region. (C) 2011 Elsevier Ltd. All rights reserved.

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