| Summary: | This dataset contains a variety of spatial data types describing the physical oceanographic and climatic setting of the Bering, Chukchi, and Beaufort Seas. Specifically, these data describe surface and subsurface currents, approximate freshwater discharge, terrestrial input of organic matter, monthly sea ice advance and retreat extents, and changes in annual and projected averages in sea water temperatures and in the concentrations of sea ice, benthic infaunal biomass, and in plankton, euphausiid, copepod communities. Staff at Audubon Alaska and Oceana used these data to create the maps displayed in 'Chapter 2: Physical Setting', in the 'Ecological Atlas of the Bering, Chukchi, and Beaufort Seas'. This dataset contains four zipped archives of spatial data and metadata and two summary files. The zip files are: 1. ArcticMarine2017_Public_Ch2PhysicalSetting.gdb.zip, compiled by Audubon Alaska staff and used to generate the maps in chapter 2 of the Ecological Atlas, 2. ArcticMarine2017_Public_Ch2_Addition.gdb.zip, compiled by Audubon Alaska staff with additional raster data used to generate the maps in chapter 2 of the Ecological Atlas, ch2_vector-4326, containing csv formatted vector data files along with metadata extracted from the geodatabase, and ch2_raster, containing geotiff formatted raster data and metadata used in the maps in the Atlas but not included in the geodatabase. The summary files are: 1. audubon_EABCBS_ch2_physical_setting_manifest.txt, listing all file path, size, and md5sum hash value for each file in each of the zip files, 2. audubon_EABCBS_ch2_physical_setting_README.txt, providing basic, human-readable metadata about the dataset, 3. audubon_EABCBS_ch2_physical_setting_data_sources.pdf, listing the data sources used for each map in chapter 6 of the atlas, and 4. audubon_EABCBS_data_sources_appendix.csv, listing the sources used for each spatial synthesis data product created by Audubon Alaska and then used to generate the maps in chapter 6, and listed in the data sources pdf. These files contain only the data used in the Atlas and deemed appropriate for public release. Certain data deemed sensitive were not included in these publicly available data archives.
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