Sea ice thickness datasets from airborne measurements 2007-2017

This dataset contains airborne electromagnetic induction (AEM) measurements of total Arctic sea ice thickness collected during helicopter and fixed-wing aircraft campaigns between 2007 and 2017. The EM-Bird sensor was towed beneath aircraft to derive the distance to the sea-ice/seawater interface from the EM response, while a laser altimeter provided the snow/air interface. The difference yields total (ice + snow) thickness. The campaigns cover Arctic regions including the Beaufort Sea, Chukchi Sea, Lincoln Sea, and Fram Strait. Each NetCDF file contains along-track airborne electromagnetic (AEM) measurements of sea ice thickness collected with the EM-Bird sensor for an individual flight. The following main variables are included: YEAR, MONTH, DAY — calendar date of observation LATITUDE, LONGITUDE — geographic position of measurement (WGS84) THICKNESS — total ice + snow thickness (m)本数据集包含2007年至2017年间通过直升机与固定翼飞机科考航次获取的北极海冰总厚度航空电磁感应（airborne electromagnetic induction, AEM）实测数据。EM-Bird传感器被拖曳于飞机下方，通过电磁响应反演得到海冰-海水界面的距离；同时搭载激光高度计获取雪-空气界面的高度数据，二者差值即为海冰与积雪的总厚度。本次科考航次覆盖的北极区域包括波弗特海、楚科奇海、林肯海以及弗拉姆海峡。 每个NetCDF文件对应单次飞行航次，包含使用EM-Bird传感器获取的沿轨海冰厚度航空电磁感应实测数据。数据集包含以下核心变量： YEAR、MONTH、DAY — 观测对应的年、月、日 LATITUDE、LONGITUDE — 测量点位的地理坐标（WGS84坐标系） THICKNESS — 海冰与积雪总厚度（单位：米）