Stratospheric water vapor measurement in the tropical zone by means of a frost point hygrometer on board long‐duration balloons
Stratospheric water vapor measurement in the tropical zone by means of a frost point hygrometer on board long‐duration balloons
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通过长期气球上的霜点湿度计测量热带地区的平流层水蒸气
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
J. Ovarlez
中科院分区：
文献类型：
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作者：
J. Ovarlez
在南半球热带23°S至10°S之间的南半球夏季，进行了两次长时间的气球飞行，利用霜点湿度计测量平流层水汽。观测结果表明，50百帕附近的最小混合比约为3.5ppmv，这证实了低纬地区存在潮汐暂停。还观察到在新赫布里底周围的高对流区域的一个特别冷的对流层顶附近接近饱和条件，根据全球气象卫星系统的卫星数据，那里的云顶温度低至−84°C。
Two long-duration balloon flights were performed during austral summer in the southern hemisphere tropical zone, between 23°S and 10°S, for stratospheric water vapor measurement by means of a frost point hygrometer. The observations show a mixing ratio minimum of about 3.5 ppmv near 50 hPa that corroborates the existence of the hygropause in low-latitude areas. Also observed was the approach of saturation conditions near a particularly cold tropopause in the highly convective area around New Hebrides, where cloud top temperatures as low as −84°C were seen with GMS satellite data.