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Composition and Distribution Analysis of Bioaerosols Under Different Environmental Conditions
Published on: January 7, 2019
Particulate air pollution in Lanzhou China.
Peter C Chu1, Yuchun Chen, Shihua Lu
1Naval Ocean-Atmospheric Prediction Laboratory, Naval Postgraduate School Monterey, California, USA. pcchu@nps.edu
Environment International
|February 1, 2008
Summary
Lanzhou, China experiences severe air pollution from total suspended particles (TSP) and PM(10) annually from November to April. This study analyzes pollution sources and dust storm impacts on these high particulate matter concentrations.
Area of Science:
- Environmental Science
- Atmospheric Chemistry
- Public Health
Background:
- Lanzhou, China has faced persistent high concentrations of total suspended particles (TSP) and PM(10) for over two decades.
- Air quality data from October 1999 to April 2001 reveal significant TSP and PM(10) levels, particularly during winter and spring.
Purpose of the Study:
- To analyze the contributing factors to severe PM(10) and TSP pollution in Lanzhou.
- To investigate the roles of intrinsic pollution sources and external factors like dust storms.
Main Methods:
- Intensive observational data collection from October 1999 to April 2001.
- Analysis of seasonal variations in particulate matter concentrations.
- Assessment of pollution sources and the influence of dust storm propagation.
Main Results:
- PM(10) pollution intensifies from November to April, reaching mid to high alert levels.
- TSP concentrations in winter and spring are 2-10 times higher than the severe pollution criterion.
- Seasonal patterns show low pollution alerts in summer.
Conclusions:
- Both intrinsic pollution sources and remote dust storm propagation significantly contribute to severe PM(10) and TSP levels in Lanzhou.
- Understanding these factors is crucial for developing effective air pollution control strategies in the region.
