Sea Ice Chart of Canadian Ice Service Brief Introduction

The Canadian Ice Service (CIS) produces digital Arctic regional sea ice charts for marine navigation, climate research, and input to the Global Digital Sea Ice Data Bank (GDSIDB). The ice charts are created through the manual analysis of in situ, satellite, and aerial reconnaissance data. The ice charts have information on ice concentration, stage of development, and ice form, following World Meteorological Organization terminology. These sea ice charts begin in 2006 and cover the following regions of the Canadian Arctic: Northern Canadian waters (Western Arctic, Eastern Arctic, and Hudson Bay) and Southern Canadian waters (Great Lakes and East Coast). Each regional shapefile (.shp) (encoded in SIGRID-3 format) and associated metadata file (.xml) are combined into a tar archive file (.tar) for distribution. All data are available via FTP[1].

Fig.1 illustrates the basic components of the ice chart of CIS. The Introduction about SIGRID-3 is in reference [2].

Fig.1 CIS Sea Ice Charts

To validate the classification result of my sea ice and open water, and I want to reclassify the sea ice kinds based on SIGRID-3 format.Fig.2-Fig.3 gives my reclassify standard.

Fig.2 Code of Sea Ice Concentration

Fig.3 Code of Development Stage

Reference:
[1] https://nsidc.org/data/g02171

[2]https://www.canada.ca/en/environment-climate-change/services/weather-manuals-documentation/manice-manual-of-ice/chapter-3.html#ex4a
[3]https://www.oceanbestpractices.net/bitstream/handle/11329/97/JCOMM%20TR23%20SIGRID3.pdf?sequence=1