Polar stratospheric clouds over McMurdo, Antarctica, during the 1991 spring: Lidar and particle counter measurements
Polar stratospheric clouds over McMurdo, Antarctica, during the 1991 spring: Lidar and particle counter measurements
复制标题
1991 年春季南极洲麦克默多上空的极地平流层云：激光雷达和粒子计数器测量
DOI：
--
复制
发表时间：
1992
期刊：
影响因子：
--
通讯作者：
G. Donfrancesco
中科院分区：
文献类型：
--
作者：
A. Adriani;T. Deshler;G. Gobbi;B. Johnson;G. Donfrancesco
1991年8月下旬在南极洲的麦克默多观测极地平流层云时，在两天内同时进行了激光雷达和球载粒子计数器测量。硝酸三水合物和冰云在平流层低层10和23公里之间，在不同的形成阶段和不同的冷却速率，但在所有情况下的尺寸分布是双峰。激光雷达测量的散射比和计算的颗粒大小分布的比较是在良好的协议，但是，当低平流层高度扰动波活动观察到的差异。在横贯南极山脉上空流动的空气所产生的背风波在高达20公里的高度上诱发了冰云的形成。1991年8月底以后没有观察到PSC。
Lidar and balloonborne particle counter measurements were performed simultaneously on two days when polar stratospheric clouds were observed in late August 1991 at McMurdo, Antarctica. Both nitric acid trihydrate and ice clouds were observed in the lower stratosphere between 10 and 23 km in different formation stages and with different cooling rate; however in all cases the size distributions were bimodal. Comparison of scattering ratios measured by lidar and calculated from particle size distributions are in good agreement; however, discrepancies were observed when the lower stratosphere was highly perturbed by wave activity. Lee waves generated by air flowing over the Trans Antarctic Mountains induced ice cloud formation at altitudes as high as 20 km. No PSCs were observed after the end of August in 1991.