Arctic Sea State 2015 Field Campaign data are now available. The U.S. Office of Naval Research () Sea State Departmental Research Initiative (DRI) field campaign was conducted in October and November of 2015 in the Beaufort Sea in order to better understand how waves and ice interact as Arctic ice advances in late autumn. Data collection took place under four sampling modes: wave experiments via buoys, ice stations, flux stations, and ship surveys. The data set consists of oceanographic and atmospheric data acquired from the ship along with wave spectra from several arrays of buoys, all provided in NetCDF files. Data were prepared for publication and are archived, maintained, and distributed by through the support of the Office of Naval Research.
The following data sets are archived, maintained, and distributed by @ through support from NCEI and USNIC.
Daily updating of U.S. National Ice Center Daily Marginal Ice Zone Products has resumed. This Arctic and Antarctic series begins in October 2004. In addition to the information in the User Guide for the product, you’ll find a comparison between this product’s and the one would obtain from passive microwave data in a poster titled Edge of Antarctica: Two Differing Perspectives on Where Ice and Water Mix.
Processing and distribution of U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format has resumed. To make this product, we reformat the weekly USNIC Arctic and Antarctic-wide analyses, and condense the SIGRID-3 encoded information about partial concentrations of ice in different stages of development into broader categories of concentrations of multiyear, first-year, and thin ice, as well as total concentration and fast ice extent. Five- and ten-year climatologies of these, along with fields showing frequency of occurrence of ice at any concentration, are included as well. The series begins in January, 2003. Data files are in NetCDF, GeoTIFF, and shapefile. A poster provides a quick overview of the product.
The IMS Daily Northern Hemisphere Snow and Ice Analysis data set is now available in NetCDF format for 4 km and 1 km gridded data. These snow and ice maps are the product of many data sources used be analysts at the U. S. National Ice Center. We archive and distribute the USNIC product, along with a User Guide that describes its production.
We also use the IMS product to make the Multisensor Analyzed Sea Ice Extent. MASIE gives a quick view of sea ice extent that is more detailed than that of the Sea Ice Index or other passive microwave-derived products. It, too, is now available in NetCDF in addition to GeoTIFF, PNG browse images, ASCII regional extent numbers, shapefiles, and KMZ.
Finally, the / Climate Data Record of Passive Microwave Sea Ice Concentration, Version 4 is now available. Daily CDR Sea ice fields now span 25 October 1978 through to the most recent processing. Monthly CDR fields span from November 1978 through to the most recent processing. For more information, see the announcement.