CRISTA‐2 observations of the South Polar Vortex in winter 1997: A new dataset for polar process studies
CRISTA‐2 observations of the South Polar Vortex in winter 1997: A new dataset for polar process studies
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DOI：
10.1029/2000gl012374
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发表时间：
2001-08
影响因子：
5.2
通讯作者：
R. Spang;M. Riese;D. Offermann
中科院分区：
文献类型：
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作者：
R. Spang;M. Riese;D. Offermann
1997 年 8 月，在低温大气光谱仪和望远镜 (CRISTA) 的第二次任务中，在南极洲上空看到了平流层中大量且高度变化的云层。可以观测到两片大面积的极地平流层云（PSC）。涡旋边缘附近的一个 PSC 区域是由气象条件造成的，因为它是臭氧小孔事件的典型现象，并在两天内溶解。 CRISTA 测量的 HNO3 的温度依赖性表明，在其中心之外，云由 I 型粒子组成。然而，由于气象温度和水蒸气量的不确定性，不可能进一步区分三水硝酸（NAT）或过冷三元溶液（STS）。
During the second mission of the Cryogenic Spectrometers and Telescopes for the Atmosphere (CRISTA) in August 1997 considerable and highly variable cloud cover in the stratosphere was seen over Antarctica. Two large areas of polar stratospheric clouds (PSC) could be observed. One region of PSCs near the vortex edge was caused by a meteorological situation as it is typical for an ozone minihole event and dissolved within two days. The temperature dependence of the HNO3 measured by CRISTA suggests that outside of their center the clouds consists of type I particles. However, a further discrimination between nitric acid trihydrate (NAT) or supercooled ternary solutions (STS) is not possible, due to the uncertainties in the meteorological temperatures and the amount of water vapor.