Monthly average polar sea-ice concentration
Monthly average polar sea-ice concentration
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DOI：
10.3133/ds27
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Peter N. Schweitzer
中科院分区：
文献类型：
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作者：
Peter N. Schweitzer
该数据集代表了对SMMR和SSM/I仪器的海冰浓度数据进行计算的结果。原始数据来自美国国家冰雪数据中心（NSIDC）。该数据集还包含进行计算的程序的源代码。目的是得出整个13.25年序列（1978-1991年）的月平均值，并得出代表平均年份变化的月平均值的综合序列。生成的文件集包含每个极地地区每年的月度图像，每个极地产生160个文件，以及将年份组合在一起的复合月度平均值，产生12个文件。以这种方式平均图像往往会减少缺乏有效数据的网格单元的数量；综合平均值的设计是为了抑制年际变化。数据集中还包括可以在用户指定位置检索季节性冰浓度概况的程序。这些非图形数据检索程序提供了适用于UNIX、扩展DOS和Macintosh计算机的版本。图形浏览实用程序也包含在相同的计算平台中，但需要更复杂的显示系统。
This data set represents the results of calculations carried out on sea-ice-concentration data from the SMMR and SSM/I instruments. The original data were obtained from the National Snow and Ice Data Center (NSIDC). The data set also contains the source code of the programs that made the calculations. The objective was to derive monthly averages for the whole 13.25-year series (1978-1991) and to derive a composite series of monthly averages representing the variation of an average year. The resulting file set contains monthly images for each of the polar regions for each year, yielding 160 files for each pole, and composite monthly averages in which the years are combined, yielding 12 more files. Averaging the images in this way tends to reduce the number of grid cells that lack valid data; the composite averages are designed to suppress interannual variability. Also included in the data set are programs that can retrieve seasonal ice-concentration profiles at user-specified locations. These nongraphical data retrieval programs are provided in versions for UNIX, extended DOS, and Macintosh computers. Graphical browse utilities are included for the same computing platforms but require more sophisticated display systems.