Barrow Airborne Sea Ice Thickness Surveys

As an international partner, the Alfred Wegener Institute for Polar and Marine Research provides measurements of sea ice thickness obtained by a helicopter based electromagnetic (EM) ice thickness sensor. A description of the system is given in Haas et al. (2007). In principle the distance between the instrument and the sea surface is estimated with an electromagnetic signal, regardless of the overlying sea ice cover. The distance to the top snow cover is estimated with a laser altimeter. Consequently all thickness data refers to the snow plus ice or total thickness. * Please note: AEM data from 2013 onwards were acquired using a new sensor known as the Multi frequency Airborne Sea Ice Explorer (MAiSIE). While the quicklook data currently provided are compatible with earlier data, the dataset will be updated in the future when an improved calibration algorithm (made possible by sensing advances in MAiSIE) is implemented Data Citations: Pfaffhuber, A. A.; Hendricks, S. & Kvistedal, Y. A., Progressing from 1D to 2D and 3D near-surface airborne electromagnetic mapping with a multisensor, airborne sea-ice explorer, Geophysics, 2012, 77, WB109-WB117 Eicken, H., S. Hendricks, M. Kaufman, A. Mahoney. (July 10, 2009, Updated 2012). Barrow Airborne Sea Ice Thickness Surveys (SIZONET). UCAR/NCAR - CISL - ACADIS. http://dx.doi.org/10.5065/D6CC0XMC

作为国际合作伙伴，阿尔弗雷德·魏格纳极地与海洋研究所（Alfred Wegener Institute for Polar and Marine Research）提供了由直升机载电磁（electromagnetic, EM）冰厚传感器获取的海冰厚度测量数据。该系统的详细说明参见Haas等（2007）的研究。从原理上讲，该系统通过电磁信号估算仪器与海面的距离，不受上方覆盖的海冰影响；同时通过激光高度计（laser altimeter）估算仪器与顶部积雪层的距离。因此，所有厚度数据均对应积雪与海冰的总厚度。
* 请注意：2013年及之后的航空电磁（airborne electromagnetic, AEM）数据采用了名为多频机载海冰探测器（Multi frequency Airborne Sea Ice Explorer, MAiSIE）的新型传感器采集。尽管当前提供的快速预览数据（quicklook data）与早期数据兼容，但得益于MAiSIE的传感技术进步，待改进的校准算法落地后，该数据集将于未来完成更新。
数据引用：
Pfaffhuber, A. A.; Hendricks, S. & Kvistedal, Y. A.，《从一维到二维、三维近地表机载电磁测绘：搭载多传感器的机载海冰探测器》，*Geophysics*，2012年，第77卷，WB109-WB117页
Eicken, H., S. Hendricks, M. Kaufman, A. Mahoney.（2009年7月10日发布，2012年更新），《巴罗机载海冰厚度勘测（SIZONET）》，UCAR/NCAR - CISL - ACADIS，http://dx.doi.org/10.5065/D6CC0XMC