Snow height on sea ice and sea ice drift from autonomous measurements from buoy 2014S10, deployed during POLARSTERN cruise PS82 (ANT-XXIX/9)@en

Snow height was measured by the Snow Depth Buoy 2014S10, an autonomous platform, drifting on Antarctic sea ice, deployed during POLARSTERN cruise PS82 (ANT-XXIX/9). The resulting time series describes the evolution of snow height as a function of place and time between 13 Jan 2014 and 03 Dec 2016 in sample intervals of 1 hour. The Snow Depth Buoy consists of four independent sonar measurements representing the area (approx. 10 m**2) around the buoy. The buoy was installed on first year ice. In addition to snow height, geographic position (GPS), barometric pressure, air temperature, and an internal ice temperature were measured. Negative values of snow height occur if surface ablation continues into the sea ice. Thus, these measurements describe the position of the sea ice surface relative to the original snow-ice interface. Differences between single sensors indicate small-scale variability of the snow pack around the buoy. The data set has been processed, including the removal of obvious inconsistencies (missing values). Records without any snow height may still be used for sea ice drift analyses.本数据集的雪高数据由2014S10型雪深浮标（Snow Depth Buoy 2014S10）测得，该浮标为漂移于南极海冰之上的自主观测平台，部署于极星号（POLARSTERN）科考航次PS82（ANT-XXIX/9）期间。所得时间序列记录了2014年1月13日至2016年12月3日期间，雪高随空间与时间的演化过程，采样间隔为1小时。该雪深浮标搭载4套独立声呐测量单元，可覆盖浮标周边约10平方米的观测区域。浮标部署于一年冰（first year ice）之上。除雪高外，同步观测的参数还包括地理位置（GPS）、大气压强、气温以及浮标内部冰温。当表面消融持续侵入海冰时，雪高会出现负值，此类测量值表征的是海冰表面相对于初始雪冰界面的位置。各传感器间的测量差值可反映浮标周边积雪层的小尺度空间变异性。本数据集已完成预处理，包括剔除明显异常值（缺失值）。即便无有效雪高记录的数据点，仍可用于海冰漂移分析。