GSTDTAP  > 地球科学
DOI10.5194/acp-17-4611-2017
Modes of vertical thermodynamic and wind variability over the Maritime Continent
Bukowski, Jennie1; Posselt, Derek J.1; Reid, Jeffrey S.2; Atwood, Samuel A.3
2017-04-07
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2017
卷号17期号:7
文章类型Article
语种英语
国家USA
英文摘要

The Maritime Continent ( MC) is an exceedingly complex region from the perspective of both its meteorology and its aerosol characteristics. Convection in the MC is ubiquitous and assumes a wide variety of forms under the influence of an evolving large-scale dynamic and thermodynamic context. Understanding the interaction between convective systems and their environment, both individually and in the aggregate, requires knowledge of the dominant patterns of spatial and temporal variability. Ongoing cloud model ensemble studies require realistic perturbations to the atmospheric thermodynamic state to devise system sensitivities. Apart from modeling studies, evanescent signals in the tropical system are obscured by the underlying broad-scale meteorological variability, which if constrained could illuminate fine-scale physical processes.


To this end, radiosonde observations from 2008 to 2016 are examined from three upper-air sounding sites within the MC for the purpose of exploring the dominant vertical temperature, humidity, and wind structures in the region. Principal component analysis is applied to the vertical atmospheric column to transform patterns present in radiosonde data into canonical thermodynamic and wind profiles for the MC. Both rotated and non-rotated principal components are considered, and the emerging structure functions reflect the fundamental vertical modes of short-term tropical variability. The results indicate that while there is tremendous spatial and temporal variability across the MC, the primary modes of vertical thermodynamic and wind variability in the region can be represented in a lower-dimensional subspace. In addition, the vertical structures are very similar among different sites around the region, though different structures may manifest more strongly at one location than another. The results indicate that, while different meteorology may be found in various parts of the MC at any given time, the processes themselves are remarkably consistent. The ability to represent this variability using a limited number of structure functions facilitates analysis of covariability between atmospheric structure and convective systems and also enables future systematic model-based ensemble analysis of cloud development, convection, and precipitation over the MC.


领域地球科学
收录类别SCI-E ; SSCI
WOS记录号WOS:000399404100001
WOS关键词MADDEN-JULIAN OSCILLATION ; SOUTH CHINA SEA ; AEROSOL METEOROLOGY ; DIURNAL-VARIATIONS ; TOGA COARE ; MONSOON ; NUMBER ; CONVECTION ; TROPICS ; CYCLE
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/30568
专题地球科学
作者单位1.Univ Michigan, Ann Arbor, MI 48109 USA;
2.Naval Res Lab, Marine Meteorol Div, Monterey, CA USA;
3.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA
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Bukowski, Jennie,Posselt, Derek J.,Reid, Jeffrey S.,et al. Modes of vertical thermodynamic and wind variability over the Maritime Continent[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(7).
APA Bukowski, Jennie,Posselt, Derek J.,Reid, Jeffrey S.,&Atwood, Samuel A..(2017).Modes of vertical thermodynamic and wind variability over the Maritime Continent.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(7).
MLA Bukowski, Jennie,et al."Modes of vertical thermodynamic and wind variability over the Maritime Continent".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.7(2017).
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