Assessment of PM10 enhancement by yellow sand on the air quality of Taipei, Taiwan in 2001.

Assessment of PM10 enhancement by yellow sand on the air quality of Taipei, Taiwan in 2001. Research Abstract Details 

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Assessment of PM10 enhancement by yellow sand on the air quality of Taipei, Taiwan in 2001. Abstract Text:

Shuenn-Chin Chang,Chung-Te Lee,

The impact of long-range transport of yellow sand from Asian Continent to the Taipei Metropolitan Area (Taipei) not only deteriorates air quality but also poses health risks to all, especially the children and the elderly. As such, it is important to assess the enhancement of PM(10) during yellow sand periods. In order to estimate PM(10) enhancement, we adopted factor analysis to distinguish the yellow-sand (YS) periods from non-yellow-sand (NYS) periods based on air quality monitoring records. Eight YS events were identified using factor analysis coupling with an independent validation procedure by checking background site values, examining meteorological conditions, and modeling air mass trajectory from January 2001 to May 2001. The duration of each event varied from 11 to 132 h, which was identified from the time when the PM(10) level was high, and the CO and NOx levels were low. Subsequently, we used the artificial neural network (ANN) to simulate local PM(10) levels from related parameters including local gas pollutants and meteorological factors during the NYS periods. The PM(10) enhancement during the YS periods is then calculated by subtracting the simulated PM(10) from the observed PM(10) levels. Based on our calculations, the PM(10) enhancement in the maximum hour of each event ranged from 51 to 82%. Moreover, in the eight events identified in 2001, it was estimated that a total amount of 7,210 tons of PM(10) were transported by yellow sand to Taipei. Thus, in this study, we demonstrate that an integration of factor analysis with ANN model could provide a very useful method in identifying YS periods and in determining PM(10) enhancement caused by yellow sand.

Assessment of PM10 enhancement by yellow sand on the air quality of Taipei, Taiwan in 2001. Publishing Authors By Initials

SC Chang,CT Lee,

For similar technology, industry, and agriculture: transportation research abstracts see: technology, industry, and agriculture: transportation research

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Assessment of PM10 enhancement by yellow sand on the air quality of Taipei, Taiwan in 2001. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Environmental monitoring and assessment

VOLUME: 132

Page Numbers: 297-309

Journal Abbreviation:

ISSN: 0167-6369

DAY: 14

MONTH: 12

YEAR: 2006

Assessment of PM10 enhancement by yellow sand on the air quality of Taipei, Taiwan in 2001. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 8508350

Assessment of PM10 enhancement by yellow sand on the air quality of Taipei, Taiwan in 2001. Keywords Mesh Terms:

KEYWORDS: Transportation

MESH TERMS: analysis

Chemical & Substance for Abstract: Assessment of PM10 enhancement by yellow sand on the air quality of Taipei, Taiwan in 2001. Information

Substance Name: Silicon Dioxide

Registry Number: 7631-86-9

Grant and Affiliation Information for Assessment of PM10 enhancement by yellow sand on the air quality of Taipei, Taiwan in 2001.

AFFILIATION: Graduate Institute of Environmental Engineering, National Central University, 300 Jhongda Rd., Jhongli 32001, Taiwan, Republic of China.

Country: Netherlands

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MEDLINETA: Environ Monit Assess

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