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DOI	10.5194/acp-20-15585-2020
	Reappraising the appropriate calculation of a common meteorological quantity: Potential temperature
	Baumgartner M.; Weigel R.; H. Harvey A.; Plöger F.; Achatz U.; Spichtinger P.
发表日期	2020
ISSN	1680-7316
起始页码	15585
结束页码	15616
卷号	20 期号:24
英文摘要	The potential temperature is a widely used quantity in atmospheric science since it is conserved for dry air's adiabatic changes of state. Its definition involves the specific heat capacity of dry air, which is traditionally assumed as constant. However, the literature provides different values of this allegedly constant parameter, which are reviewed and discussed in this study. Furthermore, we derive the potential temperature for a temperature-dependent parameterisation of the specific heat capacity of dry air, thus providing a new reference potential temperature with a more rigorous basis. This new reference shows different values and vertical gradients, in particular in the stratosphere and above, compared to the potential temperature that assumes constant heat capacity. The application of the new reference potential temperature is discussed for computations of the Brunt-Väisälä frequency, Ertel's potential vorticity, diabatic heating rates, and for the vertical sorting of observational data. © 2020 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	climate modeling; heat capacity; parameterization; potential temperature; regional climate; temperature profile
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247275
作者单位	Zentrum für Datenverarbeitung, Johannes Gutenberg University Mainz, Mainz, Germany; Institute for Atmospheric Physics, Johannes Gutenberg University Mainz, Mainz, Germany; Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, CO, United States; Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research (IEK-7), Jülich, Germany; Institute for Atmospheric and Environmental Research, University of Wuppertal, Wuppertal, Germany; Institut für Atmosphäre und Umwelt, Goethe-Universität Frankfurt, Frankfurt am Main, Germany
推荐引用方式 GB/T 7714	Baumgartner M.,Weigel R.,H. Harvey A.,et al. Reappraising the appropriate calculation of a common meteorological quantity: Potential temperature[J],2020,20(24).
APA	Baumgartner M.,Weigel R.,H. Harvey A.,Plöger F.,Achatz U.,&Spichtinger P..(2020).Reappraising the appropriate calculation of a common meteorological quantity: Potential temperature.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(24).
MLA	Baumgartner M.,et al."Reappraising the appropriate calculation of a common meteorological quantity: Potential temperature".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.24(2020).