Snow height on sea ice and sea ice drift from autonomous measurements from buoy 2013S1, deployed during Antarctic Fast Ice Network 2013 (AFIN 2013)@en

Snow height was measured by the Snow Depth Buoy 2013S1, an autonomous platform, installed close to Neumayer III Base, Antarctic during Antarctic Fast Ice Network 2013 (AFIN 2013). The resulting time series describes the evolution of snow height as a function of place and time between 11 Feb 2013 and 29 Apr 2013 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 the ice shelf. In addition to snow height, geographic position (GPS), barometric pressure, air temperature, and ice surface 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. Note: This data set contains only relative changes in snow height, because no initial readings of absolute snow height are available.积雪高度数据由2013S1型雪深浮标（Snow Depth Buoy 2013S1）测得，该自主观测平台部署于南极2013年快速冰网项目（Antarctic Fast Ice Network 2013，简称AFIN 2013）实施期间，站位邻近诺伊迈尔三世基地（Neumayer III Base）。 所得时间序列刻画了2013年2月11日至2013年4月29日期间，积雪高度随空间位置与时间的演化规律，采样间隔为1小时。 该雪深浮标（Snow Depth Buoy）配备四组独立声呐测量模块，可覆盖浮标周边约10平方米的观测范围。该浮标部署于冰架之上。 除积雪高度外，该浮标还同步采集了地理位置（GPS，全球定位系统）、大气压强、空气温度及冰面温度等多类观测数据。 当表面消融持续侵入海冰时，积雪高度会出现负值，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。 各独立传感器间的测量差值可反映浮标周边积雪覆盖层的小尺度空间变异性。 本数据集已完成预处理工作，包括剔除明显不一致的异常数据（含缺失值）。 无积雪高度记录的数据集仍可用于海冰漂移分析。 注：由于缺乏绝对积雪高度的初始基准读数，本数据集仅包含积雪高度的相对变化量。