Change and variability in East Antarctic sea ice seasonality 1979/80-2009/10

This dataset relates to long-term change and variability in annual timings of sea ice advance, retreat and resultant ice season duration in East Antarctica derived from the satellite passive-microwave time series dating back to Nimbus 7. These were calculated from satellite-derived ice concentration data for the period 1979/80 to 2009/10. The dataset includes more detailed analysis of change and variability in sea ice conditions along meridional transects i.e., 110 degrees E and 140 degrees E relating to sea ice concentration and extent, and along 90 deg E, 100 deg E, 110 deg E and 140 deg E for trends in sea ice concentration for the period 1979-2010. Also included are monthly sea-surface temperature (SST) trends mapped north of the East Antarctic sea-ice zone for the period 1982-2010. The SST data are from the Reynolds and Smith OLv2 dataset.These data form the basis of the publication: Massom, R.A., P. Reid, S. Stammerjohn, B. Raymond, A. Fraser and S. Ushio. 2013. Change and variability in East Antarctic sea ice seasonality, 1979/80-2009/10. PloS ONE, 8(5), e64756, doi:10.1371/journal.pone.0064756

本数据集聚焦东南极海冰年度结冰推进、消融退缩的时间节点，以及由此形成的海冰季时长的长期变化与变异性，其数据源自可追溯至雨云7号（Nimbus 7）卫星的卫星被动微波时间序列。上述参数均基于1979/80至2009/10时段的卫星反演海冰密集度数据计算得到。本数据集还包含东南极海冰状况变化与变异性的精细化分析：针对东经110°、140°两条经向断面，开展海冰密集度与覆盖范围相关研究；针对东经90°、100°、110°、140°四条断面，分析1979-2010年海冰密集度的变化趋势。数据集同时收录了1982-2010年东南极海冰区以北海域的逐月海表温度（Sea Surface Temperature, SST）变化趋势制图数据，该海表温度数据源自Reynolds与Smith发布的OLv2数据集。本数据集为以下学术论文提供了核心数据支撑：Massom R.A.、Reid P.、Stammerjohn S.、Raymond B.、Fraser A.与Ushio S.，2013年。《1979/80-2009/10年东南极海冰季节变化与变异性》，《公共科学图书馆·综合》（PloS ONE），第8卷第5期，e64756，DOI:10.1371/journal.pone.0064756。