The impact of channel effect on Asian dust transport dynamics: a case in southeastern Asia
Item
Title (Dublin Core)
The impact of channel effect on Asian dust transport dynamics: a case in southeastern Asia
Description (Dublin Core)
A super heavy dust event was identified with unprecedented PM<sub>10</sub> in terms of speed and concentration in the southeastern Asia. The average concentration was observed exceeding the value of 1000 μg m<sup>−3</sup> for the duration lasting more than 10 h, with the highest value reached 1724 μg m<sup>−3</sup> in northern Taiwan on 21 March 2010. We found that this case exhibited an uneven and intriguing spatial distribution of PM<sub>10</sub> concentration and transport speed between eastern and western Taiwan. Higher values were observed in the western and northern areas. The peak concentrations can vary up to 5-fold between western and eastern Taiwan, and ten-fold between the northern tip and southern tip of Taiwan, only about 400 km apart. A high resolution, 10 km, numerical study by Weather Research Forecast (WRF) and WRF-chem models revealed that this intriguing spatial distribution of the Asian dust transport was resulting from a strong coupling effect of the geographic channel effect and blocking of the easterly from the Pacific Ocean. We are confident that this coupling effect can be revealed only by applying a high resolution numerical study in other similar regions.
Creator (Dublin Core)
Lin, C.-Y.
Sheng, Y.-F.
Chen, W.-N.
Wang, Z.
Kuo, C.-H.
Chen, W.-C.
Yang, T.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-12-271-2012
https://acp.copernicus.org/articles/12/271/2012/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
