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NOAA@NSIDC

Stewards of data, past and present

NOAA Data Updates

The Images of Antarctic Ice Shelves data set (NSIDC-0102), accessible through the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC), has been updated to Version 2. This data set contains images of ice shelves considered the most susceptible to rapid change due to climatic warming and those that occasionally calve major icebergs. This monitoring effort began using AVHRR 1 Km images and later included MODIS images from both Terra and Aqua.
NOAA@NSIDC would like to make users aware that the ice-off dates for certain years between 2006-2019 for 20 Maine Lakes in this database have been corrected. The source of these dates for 2007-2008 onwards for 19 of these lakes are the Maine Department of Agriculture, Conservation and Forestry (DACF). For China Lake, all the data are from the Townline/China Lake Association.
NOAA@NSIDC would like to make users aware of a change to the processing frequency for the U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format data set. The USNIC has changed to creating their Arctic and Antarctic Sea Ice Charts from weekly to every other week. The Arctic and Antarctic charts will be processed on alternating weeks. For example, the Arctic charts were processed for the week of 18 April 2022, and the Antarctic will be processed the following week, and so on alternating each week.

On 18 April 2022, the IMS Daily Northern Hemisphere Snow and Ice Analysis files were renamed. Two updates were made to the file names:

NOAA@NSIDC is pleased to announce that the Glacier Covered Area for the State of Alaska, 1985-2020, Version 1 data set is now available at the National Snow and Ice Data Center (NSIDC). This data set captures changes in glacier covered area across the state of Alaska for the period of 1985-2020.
On 18 April 2022, the IMS Daily Northern Hemisphere Snow and Ice Analysis (G02156) data set will have new file names. There are two updates being made to the file names:
  1. Addition of the timestamp to the file names for which the data are valid.
NOAA@NSIDC is pleased to announce that the Climate Data Record of Passive Microwave Sea Ice Concentration, Version 4 data set, accessible through the National Snow and Ice Data Center (NSIDC), has been updated to include the time period of 01 June 2021 through 31 December 2021.
NOAA@NSIDC is pleased to announce that the International Ice Patrol (IIP) has updated their Iceberg Sightings Database through the 2021 iceberg season. The IIP has been collecting information on iceberg activity in the North Atlantic since 1913, and this database contains data from these sightings starting in 1960. The IIP data files include latitude and longitude of sighted icebergs, coded iceberg size and shape class, and date and time of the sighting.

The Daily Great Lakes Ice Concentration, 1973 Onward, Version 1 data set has been updated. There were some missing daily ASCII files for the years 2007 to 2009 and 2011 to 2016. These missing files for additional days have been added to the archive and are now available. This data set consists of daily gridded lake ice concentration for the Laurentian Great Lakes from the NOAA Great Lakes Environmental Research Laboratory (GLERL). Data set DOI: https://doi.org/10.7265/krkb-f591

NOAA@NSIDC would like to make you aware of a change to the data used to produce the U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format, Version 1 data set.

NOAA@NSIDC is pleased to announce that the Climate Data Record of Passive Microwave Sea Ice Concentration, Version 4 data set has been updated to include the time period of 01 January 2021 through 31 May 2021.

NOAA@NSIDC is pleased to announce the release of the Rutgers Northern Hemisphere 24 km Weekly Snow Cover Extent, September 1980 Onward data set. This data set provides weekly snow cover extent at a 24 km resolution for the Northern Hemisphere from September 1980 in NetCDF format. The time series currently goes to September 2021 but will be updated on an annual basis every September.

NOAA@NSIDC is pleased to announce that the 2021 ice season data is now available from the Daily Great Lakes Ice Concentration, 1973 Onward data set. The new data span 22 November 2020 through 29 April 2021. This data set consists of daily gridded lake ice concentration for the Laurentian Great Lakes from the NOAA Great Lakes Environmental Research Laboratory (GLERL). The data are provided as gridded ASCII text files along with corresponding browse image files in .jpg format.

NSIDC is pleased to announce the release of the Arctic Sea State 2015 Field Campaign, Version 1 data set. The U.S. Office of Naval Research (ONR) 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. As sea ice has retreated under the influence of warming climate, fetch (distance of open water over which wind can act to build waves) has grown, resulting in an increasingly dynamic sea state.

NOAA@NSIDC and the U.S. National Ice Center are pleased to announce that the IMS Daily Northern Hemisphere Snow and Ice Analysis data set is now available in NetCDF format for the 4 km and 1 km gridded data.

NOAA@NSIDC is pleased to announce that the weekly updating of the U.S. National Ice Center Arctic and Antarctic Sea Ice Concentration and Climatologies in Gridded Format, Version 1 data set has resumed. Data from 14 April 2021 onwards are now available, extending the series that begins on 6 January 2003. The data set will continue to be updated on a weekly basis. Access to the data and documentation is available from the data set web page at NSIDC.

NOAA@NSIDC is pleased to announce that the daily updating of the U.S. National Ice Center Daily Marginal Ice Zone Products, Version 1 data set has resumed. Data from 14 April 2021 onwards are now available, extending the series that begins on 19 October 2004. The data set will continue to be updated on a daily basis. Access to the data and documentation is available from the data set web page at NSIDC. Data Set DOI: doi: https://doi.org/10.7265/ggcq-1m67

NOAA@NSIDC is pleased to announce that photos of glaciers in the Kenai Fjords National Park have been added to the Glacier Photograph Collection. These 281 photos are a special collection of photos that are part of an ongoing repeat photography project documenting coastal glacier change in Kenai Fjords National Park in south-central Alaska. The oldest photos in the collection were taken in the summer of 1909 when USGS surveyors, U.S. Grant and D.F. Higgins, completed a detailed survey of the tidewater glaciers along the southeastern coast of the Kenai Peninsula.

NOAA@NSIDC is pleased to announce that the Near-Real-Time NOAA@NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 2 data set, accessible through the National Snow and Ice Data Center (NSIDC) is now available. The main changes in this new version are:

NOAA@NSIDC is pleased to announce that the NOAA@NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 4 data set, accessible through the National Snow and Ice Data Center (NSIDC), is now available. The main changes in this new version are: