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首页> 外文会议>Tenth International Conference on Modelling, Monitoring and Management of Air Pollution Jul, 2002 City of Segovia >Comparison of field observation with water tank experiment on air pollution concentration in Kathmandu valley
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Comparison of field observation with water tank experiment on air pollution concentration in Kathmandu valley

机译：加德满都流域空气污染浓度实地观察与水箱实验的比较

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摘要

The air pollution concentration in the winter season of Katmandu valley is very high compared with summer season, because the air pollution concentration was strongly influenced by the inversion layer that is formed at Katmandu valley. This mechanism was simulated by a water tank experiment and by numerical calculation. Thermal stratification was made at the start of the experiment, and the temperature on the bottom of water tank was changed with the period of 12 minute. The updraft wind on the slope and Benard convection occurred while the bottom temperature was maintained in high temperature. The downdraft wind on the slope occurred and the inversion layer was formed while the bottom temperature was maintained in low temperature. The calculated pollution concentration was qualitatively agreed with the field observation in Katmandu valley.
机译：与夏季相比，加德满都谷地冬季的空气污染浓度非常高，这是因为加德满都谷地形成的反演层强烈影响了空气污染浓度。通过水箱实验和数值计算来模拟该机理。在实验开始时进行热分层，并且在12分钟的时间段内改变水箱底部的温度。当底部温度保持在高温时，斜坡上的上升气流和贝纳德对流发生。在底部温度保持在低温下的同时，在斜坡上发生了向下的气流，并形成了反转层。计算出的污染浓度与加德满都谷地的实地观测定性一致。

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