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An Overview of Parameterezations of Heat Transfer over Moss-Covered Surfaces in the Earth System Models.

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Title: An Overview of Parameterezations of Heat Transfer over Moss-Covered Surfaces in the Earth System Models.
Authors: Stepanenko, V. M.1,2 (AUTHOR) stepanen@srcc.msu.ru, Repina, I. A.1,3 (AUTHOR), Fedosov, V. E.4 (AUTHOR), Zilitinkevich, S. S.5 (AUTHOR), Lykossov, V. N.1,6 (AUTHOR)
Source: Izvestiya, Atmospheric & Oceanic Physics. Mar2020, Vol. 56 Issue 2, p101-111. 11p.
Subject Terms: *Surface of the earth, *Heat transfer, *Thermodynamic functions, *Plant communities, *Thermal conductivity, *Soil moisture
Abstract: Moss cover plays an important role in shaping the thermodynamic and biogeochemical functioning of ecosystems at high latitudes, where it is the dominant vegetation type. It reduces the heat transfer through the soil–atmosphere interface and between deep levels of the active layer, which leads to a decrease in the thickness of the seasonally thawed layer, and regulates the soil moisture. At the same time, in Earth system models, the heat and moisture exchange in the moss cover is represented by simplified approaches. The purpose of this paper is to summarize up-to-date knowledge on heat-transfer mechanisms acting in moss cover and methods for their quantitative description; we also aim to identify the data missing for constructing physically justified parameterizations and formulate tasks for the future theoretical and experimental work. This paper provides a brief overview of the heat-transfer parameterizations for the moss–lichen cover used in modern Earth system models; presents the results of experimental and theoretical studies of the thermal conductivity of soils and mosses; and strives to encompass available information on the dynamic and thermal roughness of plant communities, including mosses. In conclusion, recommendations are given on the development of parameterizations of thermodynamic processes in the moss cover and design of desirable model and field experiments. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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  Group: Ti
  Data: An Overview of Parameterezations of Heat Transfer over Moss-Covered Surfaces in the Earth System Models.
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  Data: <searchLink fieldCode="JN" term="%22Izvestiya%2C+Atmospheric+%26+Oceanic+Physics%22">Izvestiya, Atmospheric & Oceanic Physics</searchLink>. Mar2020, Vol. 56 Issue 2, p101-111. 11p.
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  Data: *<searchLink fieldCode="DE" term="%22Surface+of+the+earth%22">Surface of the earth</searchLink><br />*<searchLink fieldCode="DE" term="%22Heat+transfer%22">Heat transfer</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermodynamic+functions%22">Thermodynamic functions</searchLink><br />*<searchLink fieldCode="DE" term="%22Plant+communities%22">Plant communities</searchLink><br />*<searchLink fieldCode="DE" term="%22Thermal+conductivity%22">Thermal conductivity</searchLink><br />*<searchLink fieldCode="DE" term="%22Soil+moisture%22">Soil moisture</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Moss cover plays an important role in shaping the thermodynamic and biogeochemical functioning of ecosystems at high latitudes, where it is the dominant vegetation type. It reduces the heat transfer through the soil–atmosphere interface and between deep levels of the active layer, which leads to a decrease in the thickness of the seasonally thawed layer, and regulates the soil moisture. At the same time, in Earth system models, the heat and moisture exchange in the moss cover is represented by simplified approaches. The purpose of this paper is to summarize up-to-date knowledge on heat-transfer mechanisms acting in moss cover and methods for their quantitative description; we also aim to identify the data missing for constructing physically justified parameterizations and formulate tasks for the future theoretical and experimental work. This paper provides a brief overview of the heat-transfer parameterizations for the moss–lichen cover used in modern Earth system models; presents the results of experimental and theoretical studies of the thermal conductivity of soils and mosses; and strives to encompass available information on the dynamic and thermal roughness of plant communities, including mosses. In conclusion, recommendations are given on the development of parameterizations of thermodynamic processes in the moss cover and design of desirable model and field experiments. [ABSTRACT FROM AUTHOR]
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      – Type: doi
        Value: 10.1134/S0001433820020139
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      – Code: eng
        Text: English
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      – SubjectFull: Surface of the earth
        Type: general
      – SubjectFull: Heat transfer
        Type: general
      – SubjectFull: Thermodynamic functions
        Type: general
      – SubjectFull: Plant communities
        Type: general
      – SubjectFull: Thermal conductivity
        Type: general
      – SubjectFull: Soil moisture
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      – TitleFull: An Overview of Parameterezations of Heat Transfer over Moss-Covered Surfaces in the Earth System Models.
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            NameFull: Repina, I. A.
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            NameFull: Zilitinkevich, S. S.
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              Text: Mar2020
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              Y: 2020
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