摘要
采用离岸 80 0m高 10 0m的气象铁塔观测所得的资料 ,利用粗糙度、阻力系数及幂指数公式 ,计算了辽东湾东海岸地区的粗糙度、阻力系数及风指数。结果表明 :在向岸气流条件下 ,粗糙度值较大 ,可达 0 18m ,阻力系数最大值也可达 0 0 2 5;在离岸气流条件下 ,粗糙度、阻力系数值较小。相同稳定度条件下 。
The surface roughness, drag coefficient and wind index are calculated with the data obtained from tower-based sensors located about 800 m from the coast. The results show that the roughness can be 0 18 m in the on-shore wind, while it is smaller in the off-shore wind; the drag coefficient can be 0 025 in the on-shore wind, while it is smaller in the off-shore wind. In addition, under the same stability, wind index decreases with the wind speed.
出处
《气候与环境研究》
CSCD
2000年第2期201-204,共4页
Climatic and Environmental Research
