DOI: 10.1002/2015JD023645
论文题名: Convective transport of trace species observed during the Stratosphere-Troposphere Analyses of Regional Transport 2008 experiment
作者: Siu L.W. ; Bowman K.P. ; Epifanio C.C.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2015
卷: 120, 期: 19 起始页码: 10530
结束页码: 10547
语种: 英语
英文关键词: convective transport
; lightning
; squall line
; trace species
Scopus关键词: atmospheric convection
; atmospheric transport
; boundary layer
; carbon monoxide
; lightning
; mesoscale meteorology
; nitrous oxide
; outflow
; ozone
; pollutant transport
; squall line
; stratosphere-troposphere interaction
; trace gas
; weather forecasting
; Texas
; United States
英文摘要: During the Stratosphere-Troposphere Analyses of Regional Transport 2008 experiment (START08) the NCAR/NSF Gulfstream V aircraft observed high concentrations of NO and NOy in the upper troposphere downwind of a weakening squall line in northern Texas, suggesting either convective transport of polluted boundary layer air to the upper troposphere or lightning production of nitrogen oxides in the convection. These hypotheses are tested by computing three-dimensional back trajectories using winds from a high-resolution simulation of the event with the Weather Research and Forecasting (WRF) model. The WRF model simulation reproduces the storm structure and evolution with good fidelity. The back trajectories reveal two distinct layers of outflow air from different mesoscale convective systems (MCSs). Most air in the upper layer is transported northward from an MCS in southern Texas, while the lower layer is from both the northern squall line and the southern MCS. In both layers inconsistencies between observed concentrations of CO, NO, and O3 and predictions from a simple mixing model suggest that there is significant production of NO by lightning in the convective systems. This is consistent with lightning observations from the National Lightning Detection Network. Additionally, the model simulation appears to slightly underestimate the depth of vertical transport by the MCS. ©2015. 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/62986
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: Department of Atmospheric Sciences, Texas AandM University, College Station, TX, United States
Recommended Citation:
Siu L.W.,Bowman K.P.,Epifanio C.C.. Convective transport of trace species observed during the Stratosphere-Troposphere Analyses of Regional Transport 2008 experiment[J]. Journal of Geophysical Research: Atmospheres,2015-01-01,120(19)