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Proceedings Paper

Seasonal change of the atmospheric boundary layer over Huaihe River basin in China
Author(s): Kenji Nakamura; H. Tanaka; T. Hiyama; T. Shinoda; T. Endo; W. Li
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Paper Abstract

The Huaihe River basin has dry winter and wet summer seasons, and the structure of the atmospheric boundary layer shows the seasonal march. The change was continuously observed using a flux tower, a Doppler sodar, and a boundary layer profiler for more than two years. The mixed layer development was strongly affected by the surface conditions, that is, the wheat field, bare soil, and paddy field. When the surface is wet, the development of the mixed layer is weak and vice versa. Generally, the development was controlled by the surface sensible heat flux. But the development of the mixed was also affected by large scale up/downdraft. When a large scale subsidence exists, the development of the mixed layer is suppressed. A so-called LES simulation was performed in order to study the vertical profiles of the sensible heat and latent heat fluxes. It was found that the profile over paddy field is in between those over dry land and over ocean. The importance of the buoyancy due to the water vapor was also confirmed.

Paper Details

Date Published: 11 December 2006
PDF: 8 pages
Proc. SPIE 6404, Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions, 64040P (11 December 2006); doi: 10.1117/12.697247
Show Author Affiliations
Kenji Nakamura, Nagoya Univ. (Japan)
H. Tanaka, Nagoya Univ. (Japan)
T. Hiyama, Nagoya Univ. (Japan)
T. Shinoda, Nagoya Univ. (Japan)
T. Endo, Nagoya Univ. (Japan)
W. Li, Chinese Meteorological Administration (China)


Published in SPIE Proceedings Vol. 6404:
Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions
Tiruvalam N. Krishnamurti; B. N. Goswami; Toshiki Iwasaki, Editor(s)

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