Airborne scanning LiDAR of sea ice during SIPEX in 2007

This data set is the airborne scanning LiDAR of a suite of different instruments deployed during the Sea Ice Physics and Ecosystems eXperiment (SIPEX) in 2007. Surveys have been flown over sea ice between 110-130
degrees E as part of the Australian Antarctic science project 2901.

Public Summary for project 2901
This research will contribute to a large multi-disciplinary study of the physics and biology of the Antarctic sea ice zone in early Spring 2007. The physical characteristics of the sea ice will be directly measured using satellite-tracked drifting buoys, ice core analysis and drilled measurements, with detailed measurements of snow cover thickness and properties. Aircraft-based instrumentation will be used to expand our survey area beyond the ship's track and for remote sampling. The data collected will provide valuable ground-truthing for existing and future satellite missions and improve our understanding of the role of sea ice in the climate system.

Project objectives:
(i) to quantify the spatial variability in sea ice and snow cover properties over scales of metres to hundreds of kilometres in the region of 110-130 degrees E, in order to improve the accuracy of sea ice thickness estimates from satellite altimetry and polarimetric synthetic aperture radar (SAR) data.
(ii) To determine the drift characteristics, and internal stress, of sea ice in the region 110-130 degrees E.
(iii) To investigate the relationships between the physical sea ice environment and the structure of Southern Ocean ecosystems (joint with AAS Proposal 2767).

本数据集为2007年海冰物理与生态实验（Sea Ice Physics and Ecosystems eXperiment, SIPEX）期间部署的多套机载扫描激光雷达（LiDAR）数据。该调查飞行覆盖东经110°-130°海域的海冰区域，隶属于澳大利亚南极科学项目2901。

项目2901公众概要
本研究将助力2007年初南极海冰区物理与生物多学科综合研究。研究将通过卫星跟踪漂流浮标、冰芯分析及现场钻探直接测量海冰物理特性，并对积雪厚度与性质开展精细化测量。机载观测仪器将用于拓展科考船航线以外的调查范围，开展遥感采样。所获数据将为现有及未来卫星任务提供宝贵的地面验证数据，并深化对海冰在气候系统中作用的认知。

项目目标：
（i）量化东经110°-130°区域内，海冰与积雪特性在米级至百公里尺度上的空间变异性，以提升基于卫星测高及极化合成孔径雷达（polarimetric synthetic aperture radar, SAR）数据的海冰厚度反演精度。
（ii）探明东经110°-130°区域内海冰的漂移特征与内部应力状态。
（iii）探究南极海冰物理环境与南大洋生态系统结构之间的关联（与澳大利亚南极局（Australian Antarctic Division, AAS）提案2767联合开展）。