DOI: 10.1016/j.atmosenv.2014.12.020
Scopus记录号: 2-s2.0-84918508254
论文题名: Influence of regional climate change on meteorological characteristics and their subsequent effect on ozone dispersion in Taiwan
作者: Cheng F ; -Y ; , Jian S ; -P ; , Yang Z ; -M ; , Yen M ; -C ; , Tsuang B ; -J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 103 起始页码: 66
结束页码: 81
语种: 英语
英文关键词: Land-sea breeze
; Mixing layer depth
; O3 dispersion
; Precipitation and soil moisture
; Regional climate change
Scopus关键词: Air quality
; Atmospheric movements
; Boundary layer flow
; Boundary layers
; Computer simulation
; Ozone
; Soil moisture
; Sun
; Weather forecasting
; Boundary layer heights
; Community multi-scale air qualities
; Computational processing time
; Land-sea breeze
; Meteorological condition
; Mixing layers
; Regional climate changes
; Weather research and forecasting models
; Climate change
; ozone
; air quality
; atmospheric chemistry
; climate change
; computer simulation
; concentration (composition)
; data set
; dispersion
; meteorology
; ozone
; regional climate
; solar radiation
; air pollutant
; air temperature
; Article
; atmospheric dispersion
; atmospheric moisture
; autumn
; boundary layer
; climate change
; East Asian
; forecasting
; hypobarism
; meteorology
; precipitation
; sea surface temperature
; seasonal variation
; soil moisture
; solar radiation
; Taiwan
; water vapor
; Pacific Ocean
; Pacific Ocean (North)
; Taiwan
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The objective of this study is to understand the influence of regional climate change on local meteorological conditions and their subsequent effect on local ozone (O3) dispersion in Taiwan. The 33-year NCEP-DOE Reanalysis 2 (NNR2) data set (1979-2011) was analyzed to understand the variations in regional-scale atmospheric conditions in East Asia and the western North Pacific. To save computational processing time, two scenarios representative of past (1979-86) and current (2004-11) atmospheric conditions were selected but only targeting the autumn season (September, October and November) when the O3 concentrations were at high levels. Numerical simulations were performed using weather research and forecasting (WRF) model and Community Multiscale Air Quality (CMAQ) model for the past and current scenarios individually but only for the month of October because of limited computational resources.Analysis of NNR2 data exhibited increased air temperature, weakened Asian continental anticyclone, enhanced northeasterly monsoonal flow, and a deepened low-pressure system forming near Taiwan. With enhanced evaporation from oceans along with a deepened low-pressure system, precipitation amounts increased in Taiwan in the current scenario. As demonstrated in the WRF simulation, the land surface physical process responded to the enhanced precipitation resulting in damper soil conditions, and reduced ground temperatures that in turn restricted the development of boundary layer height. The weakened land-sea breeze flow was simulated in the current scenario. With reduced dispersion capability, air pollutants would tend to accumulate near the emission source leading to a degradation of air quality in this region. The conditions would be even worse in southwestern Taiwan due to the fact that stagnant wind fields would occur more frequently in the current scenario. On the other hand, in northern Taiwan, the simulated O3 concentrations are lower during the day in the current scenario due to the enhanced cloud conditions and reduced solar radiation. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82000
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Sciences, National Central University, Taiwan; Department of Environmental Engineering, National Chung-Hsing University, Taichung, Taiwan
Recommended Citation:
Cheng F,-Y,, Jian S,et al. Influence of regional climate change on meteorological characteristics and their subsequent effect on ozone dispersion in Taiwan[J]. Atmospheric Environment,2015-01-01,103