Snow height on sea ice and sea ice drift from autonomous measurements from buoy 2014S14, deployed during the CryoVEx2014 field campaign

Snow height was measured by the Snow Depth Buoy 2014S14, an autonomous platform, drifting on Arctic sea ice, deployed during the CryoVEx2014 field campaign. The resulting time series describes the evolution of snow height as a function of place and time between 01 Apr 2014 and 16 Dec 2015 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 multi 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.本数据集由CryoVEx2014野外实地考察活动期间部署的自主观测平台——雪深浮标2014S14（Snow Depth Buoy 2014S14）实测获取，该平台随北极海冰漂移，用于监测雪面高度。所得时间序列刻画了2014年4月1日至2015年12月16日期间，雪面高度随空间位置与时间的演化规律，采样间隔为1小时。该雪深浮标搭载4套独立声呐测量系统，可覆盖浮标周边约10平方米的观测范围。浮标布设于多年海冰之上。除雪面高度外，该浮标还同步采集了全球定位系统（GPS）定位数据、大气压强、空气温度以及浮标内部冰温等多项观测参数。当海冰表层消融持续波及海冰内部时，雪面高度测量值会出现负值，此类数值表征的是海冰表面相对于初始雪-冰界面的相对位置。各单传感器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流程，包括剔除存在明显不一致性（如缺失值）的记录。无有效雪面高度数据的观测记录，仍可用于海冰漂移分析。