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中文摘要：
通过分析美国墨西哥湾沿岸地区9个站点1998—2005年8年的无线电探空仪观测资料，研究了当地信风逆温层的一些特性。发现该地区8年平均信风逆温出现率一般在30％-40％范围内，逆温层层底高度一般都出现在2000～2200m高度范围内，逆温层的平均厚度、层底与层顶之间的平均温度差和平均强度变化范围分别为250—300m，2.0～3.0K和0.8～1.0K／100m之间。该地区信风逆温出现率存在明显的季节变化，在冬季和春季信风逆温发生较频繁，在夏季和秋季几乎不存在信风逆温现象，此外信风逆温出现率还存在明显的年际变化。由于墨西哥湾沿岸地区信风逆温的产生机制与夏威夷群岛的不同，因此这两个地区信风逆温的一些基本特性、季节变化和年变化规律均不相同。
英文摘要：
The radiosonde observations of eight years （1998-2005）, launched from 9 stations over the Gulf of Mexico coastlands of the U.S., are analyzed to investigate local characteristics of Trade-Wind Inversion （TWI）. Throughout the whole 8 years, the averaged occurrence rates of the TWI vary from 30% to 40%, the averaged bottom heights of the TWI vary in a range of 2 000～2 200 m, the averaged thicknesses, temperature differences between the bottom and the top of the layer and intensities range from 250～300 m, 2.0～3.0 K and 0.8～1.0 K/100 m, respectively. The occurrence rates of the TWI are higher in winter and spring and almost zero in summer and fall. The monthly-averaged occurrence rates of the TWI in whole 8 years show an obvious annual variation pattern. The seasonal and annual variability of the TWI in the Gulf of Mexico coastlands stations are inconsistent with those in Hawaii islands, and these discrepancies can be explained by different mechanisms of the TWI in these two areas.
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