DOI: 10.1002/2013JD020262
论文题名: Vertical transport mechanisms of black carbon over East Asia in spring during the A-FORCE aircraft campaign
作者: Oshima N. ; Koike M. ; Kondo Y. ; Nakamura H. ; Moteki N. ; Matsui H. ; Takegawa N. ; Kita K.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 23 起始页码: 13175
结束页码: 13198
语种: 英语
英文关键词: aerosol
; aerosol modeling
; Asian outflow
; black carbon
; removal
; transport
Scopus关键词: Aerosols
; Air quality
; Aircraft
; Atmospheric radiation
; Removal
; Storms
; Troposphere
; Aerosol modeling
; Aerosol radiative forcing
; Asian outflow
; Black carbon
; Community multi-scale air qualities
; Latitudinal gradients
; Planetary boundary layers
; transport
; Atmospheric movements
; aerosol
; air quality
; airborne survey
; atmospheric convection
; atmospheric modeling
; atmospheric transport
; black carbon
; boundary layer
; cumulus
; numerical model
; orogeny
; outflow
; planetary atmosphere
; radiative forcing
; spatial distribution
; spring (season)
; troposphere
; uplift
; vertical movement
; westerly
; China
; Pacific Ocean
英文摘要: Mechanisms of vertical transport of black carbon (BC) aerosols and their three-dimensional transport pathways over East Asia in spring were examined through numerical simulations for the Aerosol Radiative Forcing in East Asia (A-FORCE) aircraft campaign in March-April 2009 using a modified version of the Community Multiscale Air Quality (CMAQ) modeling system. The simulations reproduced the spatial distributions of mass concentration of BC and its transport efficiency observed by the A-FORCE campaign reasonably well, including its vertical and latitudinal gradients and dependency on precipitation amount that air parcels experienced during the transport. During the A-FORCE period, two types of pronounced upward BC mass fluxes from the planetary boundary layer (PBL) to the free troposphere were found over northeastern and inland-southern China. Over northeastern China, cyclones with modest precipitation were the primary uplifting mechanism of BC. Over inland-southern China, both cumulus convection and orographic uplifting along the slopes of the Tibetan Plateau played important roles in the upward transport of BC, despite its efficient wet deposition due to a large amount of precipitation supported by an abundant moisture supply by the low-level southerlies. In addition to the midlatitude (35-45°N) eastward outflow within the PBL (21% BC removal by precipitation during transport), the uplifting of BC over northeastern and inland-southern China and the subsequent BC transport by the midlatitude lower tropospheric (50% BC removal) and subtropical (25-35°N) midtropospheric westerlies (67% BC removal), respectively, provided the major transport pathways for BC export from continental East Asia to the Pacific. Key Points Modified CMAQ model reproduces wet removal features of BC observed by aircraft Cyclone, convection, and orographic lifting are major uplifting mechanisms of BC We identified major transport pathways for BC export from East Asia in spring ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63126
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Meteorological Research Institute, 1-1 Nagamine, Tsukuba, Ibaraki 305-0052, Japan; Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, Tokyo, Japan; Research Center for Advanced Science and Technology, University of Tokyo, Tokyo, Japan; Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan; Faculty of Science, Ibaraki University, Mito, Japan
Recommended Citation:
Oshima N.,Koike M.,Kondo Y.,et al. Vertical transport mechanisms of black carbon over East Asia in spring during the A-FORCE aircraft campaign[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(23)