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dc.contributor.authorChu, Peter C.
dc.contributor.authorChen, Yuchun
dc.contributor.authorLu, Shihua
dc.date2005
dc.date.accessioned2013-09-11T23:04:28Z
dc.date.available2013-09-11T23:04:28Z
dc.date.issued2005
dc.identifier.citationChu, P.C., Y.C. Chen, and S.H. Lu, Afforestation for improving valley urban air quality. Air Quality Management at Urban, Regional, and Global Scales, Third International Symposium on Air Quality Management, 1379-1388
dc.identifier.urihttp://hdl.handle.net/10945/36248
dc.descriptionAir Quality Management at Urban, Regional, and Global Scales, Third International Symposium on Air Quality Managementen_US
dc.description.abstractLanzhou is one of the major cities in northwest China and the capital of Gansu Province and located at a narrow (2-8 km width), long (40-km), NW-SE oriented valley basin (elevation: 1,500- 1,600-m) with the Tibetan plateau in the west, Baita mountain (above 1,700-m elevation) in the north, and the Gaolan mountain in the south. Due to topographic and meteorological characteristics, Lanzhou is one of the most polluted cities in China. Meteorological conditions (low winds, stable stratification especially inversion), pollutant sources and sinks affect the air quality. Afforestation changes the mountain-valley local circulation system, destabilizes the atmosphere, and weakens the inversion. Besides, it may absorb some pollutants (sink). Lanzhou local government carried out afforestation and pollutant-source reduction (closing several heavy industrial factories) to improve the air-quality for the past two decades. Numerical model (RAMS-HYPACT) simulates the effect of afforestation on the air pollution control.en_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleAfforestation for improving valley urban air qualityen_US
dc.typeConference Proceedingsen_US
dc.contributor.departmentDepartment of Oceanography


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