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Comparisons of the Generalized Potential Temperature in Moist Atmosphere with the Equivalent Potential Temperature in Saturated Moist Atmosphere
Joint Authors
Zhou, Yushu
Liu, Liping
Deng, Guo
Source
Issue
Vol. 2009, Issue 2009 (31 Dec. 2009), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2009-05-06
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The real tropospheric atmosphere is neither absolutely dry nor completely saturated.
It is in general moist but not saturated.
Here the generalized potential temperature (GPT) was introduced to describe this humid feature of real moist atmosphere.
GPT's conservation property in moist adiabatic process was discussed and proved.
Comparisons of GPT in moist atmosphere with the equivalent potential temperature (EPT) in saturated moist atmosphere were made by analyzing three torrential rain cases occurring over Jianghuai Valleys in 2003, the north China in 2004, and with the typhoon Fung-Wong in 2008, respectively.
Results showed that the relative humidity is not up to 100% even in torrential rain systems, the saturated condition for EPT is not always held, and thus GPT can describe the moisture concentration and moisture gradient better than EPT.
The GPT's definition includes the process that the air changes from dry to moist, then up to saturated.
Therefore, potential temperature (PT) and EPT can be considered as its two special status.
Similar as PT and EPT, GPT can be used to study atmospheric dynamic and thermodynamic processes more generally because of its conservation property in moist adiabatic process.
American Psychological Association (APA)
Zhou, Yushu& Liu, Liping& Deng, Guo. 2009. Comparisons of the Generalized Potential Temperature in Moist Atmosphere with the Equivalent Potential Temperature in Saturated Moist Atmosphere. Advances in Meteorology،Vol. 2009, no. 2009, pp.1-9.
https://search.emarefa.net/detail/BIM-446754
Modern Language Association (MLA)
Zhou, Yushu…[et al.]. Comparisons of the Generalized Potential Temperature in Moist Atmosphere with the Equivalent Potential Temperature in Saturated Moist Atmosphere. Advances in Meteorology No. 2009 (2009), pp.1-9.
https://search.emarefa.net/detail/BIM-446754
American Medical Association (AMA)
Zhou, Yushu& Liu, Liping& Deng, Guo. Comparisons of the Generalized Potential Temperature in Moist Atmosphere with the Equivalent Potential Temperature in Saturated Moist Atmosphere. Advances in Meteorology. 2009. Vol. 2009, no. 2009, pp.1-9.
https://search.emarefa.net/detail/BIM-446754
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-446754