Contrasting the impact of aerosols at northern and southern midlatitudes on heterogeneous ice formation
Contrasting the impact of aerosols at northern and southern midlatitudes on heterogeneous ice formation
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DOI：
10.1029/2011gl048532
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发表时间：
2011-09-03
影响因子：
5.2
通讯作者：
Rohwer, E. G.
中科院分区：
文献类型：
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作者：
Kanitz, T.;Seifert, P.;Rohwer, E. G.
最近，在智利蓬塔阿雷纳斯（南纬53度）、南非斯泰伦博斯（南纬34度，靠近开普敦）和研究船Polarstern上的激光雷达在三次南北巡航中记录了三个云数据集，每个云数据集涵盖四个月的观测。通过将这些观测结果与在德国莱比锡（51 ° N）用激光雷达测量的11年云数据集进行比较，研究了北方和南半球非常不同的气溶胶条件下异质冰形成（作为云顶温度的函数）的发生。在大多数层状云的非均匀冻结行为中发现了很大的差异。例如，
Three cloud data sets, each covering four months of observations, were recently recorded with a lidar at Punta Arenas (53 degrees S), Chile, at Stellenbosch (34 degrees S, near Cape Town), South Africa, and aboard the research vessel Polarstern during three north-south cruises. By comparing these observations with an 11-year cloud data set measured with a lidar at Leipzig (51 degrees N), Germany, the occurrence of heterogeneous ice formation (as a function of cloud top temperature) for very different aerosol conditions in the northern and southern hemisphere is investigated. Large differences in the heterogeneous freezing behavior in the mostly layered clouds are found. For example,