Characteristics of Land–Atmosphere Interaction Parameters over the Tibetan PlateauSource: Journal of Hydrometeorology:;2011:;Volume( 012 ):;issue: 004::page 702DOI: 10.1175/2010JHM1275.1Publisher: American Meteorological Society
Abstract: n this study, eddy covariance flux data collected from three research stations on the Tibetan Plateau?Qomolangma for Atmospheric and Environmental Observation and Research, Nam Co for Multisphere Observation and Research, and Southeast Tibet Station for Alpine Environment Observation and Research, Chinese Academy of Sciences?are used to analyze the variation of momentum transfer coefficient (CD), heat transfer coefficient (CH), aerodynamic roughness length (z0m), thermal roughness length (z0h), and excess resistance to heat transfer (kB?1, where k is von Kármán?s constant and B?1 is a non-dimensional bulk parameter). The following results are found. The monthly average surface roughness, bulk transfer coefficient, and excess resistance to heat transfer at all three stations are obtained. The values of average heat bulk transfer coefficients are larger than those of average momentum bulk transfer coefficients at all three stations. The parameter kB?1 exhibits clear diurnal variations with lower values in the night and higher values in the daytime, especially in the afternoon. Negative values of kB?1 are often observed in the night for relatively smooth surfaces on the Tibetan Plateau, indicating that heat transfer efficiency may exceed that of momentum transfer.
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contributor author | Wang, Shuzhou | |
contributor author | Ma, Yaoming | |
date accessioned | 2017-06-09T16:36:30Z | |
date available | 2017-06-09T16:36:30Z | |
date copyright | 2011/08/01 | |
date issued | 2011 | |
identifier issn | 1525-755X | |
identifier other | ams-70850.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4212676 | |
description abstract | n this study, eddy covariance flux data collected from three research stations on the Tibetan Plateau?Qomolangma for Atmospheric and Environmental Observation and Research, Nam Co for Multisphere Observation and Research, and Southeast Tibet Station for Alpine Environment Observation and Research, Chinese Academy of Sciences?are used to analyze the variation of momentum transfer coefficient (CD), heat transfer coefficient (CH), aerodynamic roughness length (z0m), thermal roughness length (z0h), and excess resistance to heat transfer (kB?1, where k is von Kármán?s constant and B?1 is a non-dimensional bulk parameter). The following results are found. The monthly average surface roughness, bulk transfer coefficient, and excess resistance to heat transfer at all three stations are obtained. The values of average heat bulk transfer coefficients are larger than those of average momentum bulk transfer coefficients at all three stations. The parameter kB?1 exhibits clear diurnal variations with lower values in the night and higher values in the daytime, especially in the afternoon. Negative values of kB?1 are often observed in the night for relatively smooth surfaces on the Tibetan Plateau, indicating that heat transfer efficiency may exceed that of momentum transfer. | |
publisher | American Meteorological Society | |
title | Characteristics of Land–Atmosphere Interaction Parameters over the Tibetan Plateau | |
type | Journal Paper | |
journal volume | 12 | |
journal issue | 4 | |
journal title | Journal of Hydrometeorology | |
identifier doi | 10.1175/2010JHM1275.1 | |
journal fristpage | 702 | |
journal lastpage | 708 | |
tree | Journal of Hydrometeorology:;2011:;Volume( 012 ):;issue: 004 | |
contenttype | Fulltext |