globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2013JD020647
论文题名:
Uncertainty in atmospheric profiles and its impact on modeled convection development at Nam Co Lake, Tibetan Plateau
作者: Gerken T.; Babel W.; Sun F.; Herzog M.; Ma Y.; Foken T.; Graf H.-F.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:22
起始页码: 12317
结束页码: 12331
语种: 英语
英文关键词: atmospheric profiles ; clouds ; surface-atmosphere interactions ; Tibetan Plateau
Scopus关键词: Atmospheric temperature ; Clouds ; Energy balance ; Interfacial energy ; Lakes ; Atmospheric profile ; High-resolution models ; Interactive surfaces ; Near surface temperature ; Simulated evolutions ; Temperature and relative humidity ; Tibetan Plateau ; Weather observations ; Two dimensional ; air temperature ; atmospheric convection ; atmospheric modeling ; data interpretation ; energy balance ; relative humidity ; surface energy ; uncertainty analysis ; vertical profile ; China ; Nam Co ; Qinghai-Xizang Plateau ; Xizang
英文摘要: This work investigates the influence of atmospheric temperature and relative humidity profiles obtained from radio soundings, NCEP-I and ERA-Int reanalysis and GFS-FNL analysis data on the simulated evolution of clouds and convection at Nam Co Lake on the Tibetan Plateau. In addition to differences in moisture, the initial atmospheric profiles exhibit considerable differences in near-surface temperatures that affect vertical stability. Our analysis is carried out during 2 days in summer 2012 using a 2-D high-resolution modeling approach with a fully interactive surface model so that surface fluxes react to changes in cloud cover. Modeled convection for the radio-sounding profile compares reasonably well with weather observations for the first day, but less well for the second day, when large-scale synoptic effects, not included in the model, become more important. The choice of vertical profile information leads to strongly differing convection development, translating into modifications of the surface energy balance and of the energy and water cycle for the basin. There are strong differences spanning one order of magnitude in the generated precipitation between the model simulations driven by different vertical profiles. This highlights the importance of correct and high-resolution vertical profiles for model initialization. Key Points Convection development is highly dependent on source of atmospheric profile Modeled convection for the radiosounding profile agrees well with observations Changes in convection lead to large differences in surface energy balance ©2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63135
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 Micrometeorology, University of Bayreuth, 95440 Bayreuth, Germany; Department of Geography, Centre for Atmospheric Science, University of Cambridge, Cambridge, United Kingdom; Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China; Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; Bayreuth Center of Ecology and Environment Research, Bayreuth, Germany

Recommended Citation:
Gerken T.,Babel W.,Sun F.,et al. Uncertainty in atmospheric profiles and its impact on modeled convection development at Nam Co Lake, Tibetan Plateau[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(22)
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