DOI: 10.1002/jgrd.50122
论文题名: Modeling the transport and radiative forcing of taklimakan dust over the tibetan plateau: A case study in the summer of 2006
作者: Chen S. ; Huang J. ; Zhao C. ; Qian Y. ; Leung L.R. ; Yang B.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 2 起始页码: 797
结束页码: 812
语种: 英语
Scopus关键词: Atmospheric radiation
; Storms
; Weather forecasting
; Meridional transport
; Planetary boundary layers
; Radiative forcings
; Taklimakan desert
; Tibetan Plateau
; Top of the atmospheres
; Upper troposphere
; Weather research and forecasting models
; Dust
; atmospheric modeling
; atmospheric transport
; boundary layer
; climate effect
; dust
; radiative forcing
; summer
; troposphere
; weather forecasting
; China
; Qinghai-Xizang Plateau
; Taklimakan Desert
; Xinjiang Uygur
英文摘要: The Weather Research and Forecasting model with chemistry (WRF-Chem) is used to investigate an intense dust storm event during 26 to 30 July 2006 that originated over the Taklimakan Desert (TD) and transported to the northern slope of Tibetan Plateau (TP). The dust storm is initiated by the approach of a strong cold frontal system over the TD. In summer, the meridional transport of TD dust to the TP is favored by the thermal effect of the TP and the weakening of the East Asian westerly winds. During this dust storm, the transport of TD dust over the TP is further enhanced by the passage of the cold front. As a result, TD dust breaks through the planetary boundary layer and extends to the upper troposphere over the northern TP. TD dust flux arrived at the TP with a value of 6.6 Gg/day in this 5 day event but decays quickly during the southward migration over the TP due to dry deposition. The simulations show that TD dust cools the atmosphere near the surface and heats the atmosphere above with a maximum heating rate of 0.11Kday-1 at ∼7 km over the TP. The event-averaged net radiative forcings of TD dust over the TP are -3.97, 1.61, and -5.58Wm-2 at the top of the atmosphere (TOA), in the atmosphere, and at the surface, respectively. The promising performance of WRF-Chem in simulating dust and its radiative forcing provides confidence for use in further investigation of climatic impact of TD dust over the TP. © 2012. American Geophysical Union. 资助项目: DE-AC06-76RLO1830
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63992
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: Key Laboratory for Semi-Arid Climate Change, Ministry of Education, Lanzhou University, Lanzhou, Gansu, China; Pacific Northwest National Laboratory, Atmospheric Science and Global Change Division, Richland, WA, United States; School of Atmospheric Sciences, Nanjing University, Nanjing, China
Recommended Citation:
Chen S.,Huang J.,Zhao C.,et al. Modeling the transport and radiative forcing of taklimakan dust over the tibetan plateau: A case study in the summer of 2006[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(2)