What has been known and what has not in GAME/Tibet BL observation
Hirohiko Ishikawa (1), GAME-Tibet Boundary Layer Group (1)
(1) Kyoto University
The determination of surface latent and sensible heat flux is one of the major issues in the GAME/Tibet boundary layer observation. In order to give answer to this issue, various kinds of measurements have been conducted during and after the IOP. During the IOP the direct measurement of fluxes was conducted at several sites together with the measurement of radiation and soil heat fluxes, where the surface energy balance was estimated. After the IOP, monitoring of surface boundary layer was continued at some sites with Automatic Weather Station. The data from these AWS stations were used to estimate the fluxes indirectly. Although the seasonal change of fluxes were clearly detected together with typical diurnal variations at each site, the quality of the measurement, which was dependent on the site and seasons, needs to be checked carefully. Some sites were suffered by the 'flux imbalance problem', which may limit the usefulness of the data in model evaluation etc. In this presentation, the boundary layer observation in GAME/Tibet will be critically reviewed and a discussion will be given for what has been known and what has remained unknown. It is also discussed what should be done in post-GAME observation in Tibet.
Submittal Information
Name :
Date :
Hirohiko Ishikawa
31-May-01-20:11:29
Organization :
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Disaster Prevention Research Institute, Kyoto University
