摘要：Over a fve-month time window between March and July 2020, scientists deployed two small uncrewed aircraft systems (sUAS) to the central Arctic Ocean as part of legs three and four of the MOSAiC expedition . These sUAS were fown to measure the thermodynamic and kinematic state of the lower atmosphere, including collecting information on temperature, pressure, humidity and winds between the surface and 1 km, as well as to document ice properties, including albedo, melt pond fraction, and open water amounts . The atmospheric state fights were primarily conducted by the DataHawk2 sUAS, which was operated primarily in a profling manner, while the surface property fights were conducted using the HELiX sUAS, which few grid patterns, profles, and hover fights . In total, over 120 fights were conducted and over 48 fight hours of data were collected, sampling conditions that included temperatures as low as −35 °C and as warm as 15 °C, spanning the summer melt season .
