Seasonal change of the atmospheric boundary layer over Huaihe River basin in China

Kenji Nakamura; H. Tanaka; T. Hiyama; T. Shinoda; T. Endo; W. Li

doi:10.1117/12.697247

11 December 2006 Seasonal change of the atmospheric boundary layer over Huaihe River basin in China

Kenji Nakamura, H. Tanaka, T. Hiyama, T. Shinoda, T. Endo, W. Li

Proceedings Volume 6404, Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions; 64040P (2006) https://doi.org/10.1117/12.697247
Event: SPIE Asia-Pacific Remote Sensing, 2006, Goa, India

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.

Citation Download Citation

Kenji Nakamura, H. Tanaka, T. Hiyama, T. Shinoda, T. Endo, and W. Li "Seasonal change of the atmospheric boundary layer over Huaihe River basin in China", Proc. SPIE 6404, Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions, 64040P (11 December 2006); https://doi.org/10.1117/12.697247

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KEYWORDS

Heat flux

Vegetation

Climatology

Soil science

Environmental sensing

Humidity

Motion models

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