DOI: 10.1002/jgrd.50142
论文题名: Boundary layer sources for the asian anticyclone: Regional contributions to a vertical conduit
作者: Bergman J.W. ; Fierli F. ; Jensen E.J. ; Honomichl S. ; Pan L.L.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 6 起始页码: 2560
结束页码: 2575
语种: 英语
Scopus关键词: Atmospheric thermodynamics
; NASA
; Storms
; Weather forecasting
; Asian summer monsoons
; European centre for medium-range weather forecasts
; Horizontal resolution
; National center for environmental predictions
; Planetary boundary layers
; Relative contribution
; Research and application
; Retrospective analysis
; Atmospheric movements
; anticyclone
; atmospheric convection
; atmospheric transport
; boundary layer
; data set
; planetary atmosphere
; stratosphere
; trajectory
; troposphere
; updraft
; vertical movement
; vertical profile
; wind field
; China
; Qinghai-Xizang Plateau
英文摘要: [1] The transport of air from the planetary boundary layer (PBL) into the Asian Summer Monsoon anticyclone is investigated using backward trajectories initiatedwithin the anti-cyclone at 100 mb and 200 mb during August 2011. Transport occurs through a well-defined conduit centered over the southern Tibetan plateau, where convection lofts air parcels into the anticyclone. The conduit, as a dynamical feature, is distinct from the anticyclone. Thus, while the anticyclone influences transport through the upper troposphere and lower stratosphere, it does not by itself define a transport pipeline through that region. To quantify model sensitivities, parcel trajectories are calculated using wind fields from multiple analysis data sets (European Centre for Medium-Range Weather Forecasts, National Center for Environmental Prediction's Global Forecasting System, and NASA's Modern-Era Retrospective Analysis for Research and Applications [MERRA]) and from synthetically modified data sets that explore the roles of vertical motion and horizontal resolution for discrepancies among these calculations. All calculations agree on the relative contributions to PBL sources for the anticyclone from large-scale regions with Tibetan Plateau and India/SE Asia being the most important. However, they disagree on the total fraction of air within the anticyclone that was recently in the PBL. At 200 mbar, calculations using MERRA are clear outliers due to problematic vertical motion in those data. Large differences among the different data sets at 100mbar are more closely related to horizontal resolution. It is speculated that this reflects the importance of deep, small-scale convective updrafts for transport to 100 mbar. © 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/63856
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: Bay Area Environmental Research Institute, Sonoma, CA, United States; Atmospheric Chemistry Division, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307-3000, United States; Institute for Atmospheric Sciences and Climate, National Research Council, Rome, Italy; Earth Science Division, NASA Ames Research Center, Moffett Field, CA, United States
Recommended Citation:
Bergman J.W.,Fierli F.,Jensen E.J.,et al. Boundary layer sources for the asian anticyclone: Regional contributions to a vertical conduit[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(6)