A Tale of Two Poles: Exploring Mixed-Phase Clouds from above and below in Greenland and Antarctica

极地地区的混合相云已被证明大大增加了表面加热，并促成了格陵兰冰盖的大规模融化事件。可以通过多种遥感方法来确定云层的特征，首先是使用激光雷达和雷达。ICESAT 2号卫星有一个星载激光雷达仪器，最近出版的数据产品ATL 09包含大气剖面数据。目前还没有用于研究混合相极地云。通过将卫星测量结果与Summit（格陵兰）和南极观测站的地面观测结果进行比较，我们可以验证ATL 09数据集，如果成功，可以将我们对极地混合相云的观测从这些站周围的局部地区增加到整个极地地区。从那里，我们可以尝试进一步分析云的宏观和微观物理特性，以帮助他们在气候模型中的理解和实施。

Mixed-phase clouds over the polar regions have been shown to greatly increase surface heating and have contributed to large melting events on the Greenland ice sheet. The clouds can be characterised by numerous remote sensing methods, prevalently the use of LIDAR and RADAR.The ICESAT2 satellite has a space-borne LIDAR instrument, and the data product ATL09 has recently been published containing atmospheric profile data. This hasn't currently been used to study mixed-phase polar clouds. By comparing the satellite measurements with ground based observations at Summit (Greenland) and Antarctic observatories, we can validate the ATL09 data set, and if successful, can increase our observations of polar mixed-phase clouds from the localised areas around these stations to the whole polar region. From there, we can try to further characterise the macro- and microphysical properties of the clouds, to aid in their understanding and implementation in climate models.