臭氧和海温对夏季大气的影响机制
ON THE MECHANISM OF THE EFFECTS OF OZONE AND SEA SURFACE TEMPERATURE ON THE SUMMER ATMOSPHERIC FIELDS
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摘要: 用球圈范围的P-σ坐标模式对O3和海温的影响进行了数值试验,第一种方案不包含O3,第二种包含了O3,第三种既包含了O3又引入了海洋混合层。结果表明,O3对大气的直接作用表现为高层大气的加热率增大,改变了100hPa的气象场。间接作用则表现为O3引入促发了积云对流加热的变化,从而影响中、低层大气的加热率。海洋混合层的影响是直接的,主要通过海面感热和蒸发量的变化影响低层大气。Abstract: By the use of a numerical model with global domain,three numerical experiments are conducted.Results show that the inclusion of O3 increases the heating rates at upper leves.It also influences the heating component of cumulus condensation.as well as the heating rates at the lower levels.The inclusion of the ocean mixing layer has directs effects on SST,mainly through the changes of the sensible heat flux and the evaporation amount.
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