Improved meteorology and ozone air quality simulations using MODIS land   surface parameters in the Yangtze River Delta urban cluster, China

doi:10.1002/2016JD026182

CORC > 北京大学 > 环境科学与工程学院

	Improved meteorology and ozone air quality simulations using MODIS land surface parameters in the Yangtze River Delta urban cluster, China
	Li, Mengmeng ; Wang, Tijian ; Xie, Min ; Zhuang, Bingliang ; Li, Shu ; Han, Yong ; Song, Yu ; Cheng, Nianliang
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2017
关键词	NUMERICAL WEATHER PREDICTION FRACTIONAL VEGETATION COVER BOUNDARY-LAYER HEAT-ISLAND EASTERN CHINA CANOPY MODEL WRF MODEL SOIL-MOISTURE INITIAL CONDITIONS METROPOLITAN-AREA
DOI	10.1002/2016JD026182
英文摘要	Land surface parameters play an important role in the land-atmosphere coupling and thus are critical to the weather and dispersion of pollutants in the atmosphere. This work aims at improving the meteorology and air quality simulations for a high-ozone (O-3) event in the Yangtze River Delta urban cluster of China, through incorporation of satellite-derived land surface parameters. Using Moderate Resolution Imaging Spectroradiometer (MODIS) input to specify the land cover type, green vegetation fraction, leaf area index, albedo, emissivity, and deep soil temperature provides a more realistic representation of surface characteristics. Preliminary evaluations reveal clearly improved meteorological simulation with MODIS input compared with that using default parameters, particularly for temperature (from -2.5 to -1.7 degrees C for mean bias) and humidity (from 9.7% to 4.3% for mean bias). The improved meteorology propagates through the air quality system, which results in better estimates for surface NO2 (from 11.5 to 8.0 ppb for mean bias) and nocturnal O-3 low-end concentration values (from -18.8 to -13.6 ppb for mean bias). Modifications of the urban land surface parameters are the main reason for model improvement. The deeper urban boundary layer and intense updraft induced by the urban heat island are favorable for pollutant dilution, thus contributing to lower NO2 and elevated nocturnal O-3. Furthermore, the intensified sea-land breeze circulation may exacerbate O-3 pollution at coastal cities through pollutant recirculation. Improvement of mesoscale meteorology and air quality simulations with satellite-derived land surface parameters will be useful for air pollution monitoring and forecasting in urban areas.; National Natural Science Foundation of China [41605115, 91544230, 41621005, 41575145]; National Key Basic Research Development Program of China [2016YFC0203303]; Fundamental Research Funds for the Central Universities [14380021]; SCI(E); ARTICLE; 5; 3116-3140; 122
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/474564]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Li, Mengmeng,Wang, Tijian,Xie, Min,et al. Improved meteorology and ozone air quality simulations using MODIS land surface parameters in the Yangtze River Delta urban cluster, China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017.
APA	Li, Mengmeng.,Wang, Tijian.,Xie, Min.,Zhuang, Bingliang.,Li, Shu.,...&Cheng, Nianliang.(2017).Improved meteorology and ozone air quality simulations using MODIS land surface parameters in the Yangtze River Delta urban cluster, China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES.
MLA	Li, Mengmeng,et al."Improved meteorology and ozone air quality simulations using MODIS land surface parameters in the Yangtze River Delta urban cluster, China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES (2017).