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1. Arctic Landfast Sea Ice 1953-1998, Version 1 [G02195_1]
The files in this data set contain landfast sea ice data (monthly means) gathered from both Russian Arctic and Antarctic Research Institute (AARI) and Canadian Ice Service (CIS) sources. Details on ...


2. Arctic Sea Ice Charts from Danish Meteorological Institute, 1893 - 1956, Version 1 [G02203_1]
These charts, created by the Danish Meteorological Institute (DMI), provide observed and inferred sea ice extent for each summer month from 1893 to 1956. From 1893 to 1956, the Danish Meteorological ...


3. Arctic Sea Ice Concentration and Extent from Danish Meteorological Institute Sea Ice Charts, 1901-1956, Version 1 [G10007_1]
This data set provides estimates of Arctic sea ice extent and concentration from 1901 to 1956 created from a collection of historic, hand-drawn sea ice charts from the Danish Meteorological Institute ...


4. Arctic and Southern Ocean Sea Ice Concentrations, Version 1 [G00799_1]
This data set provides monthly sea ice concentration for the Arctic from 1901 to 1995 and for the Southern Oceans from 1973 to 1990 on a standard 1-degree grid (cylindrical projection) to provide ...


5. Atlas of Community-Based Monitoring in a Changing Arctic (Arctic CBM), Version 1 [ELOKA033_1]
This atlas showcases Arctic communities actively involved in observing social and environmental change. It was designed to highlight the many community-based monitoring (CBM) and traditional knowledge ...


6. Environmental Working Group Arctic Meteorology and Climate Atlas, Version 1 [G01938_1]
The Arctic Meteorology and Climate Atlas was developed by specialists from the Arctic and Antarctic Research Institute (AARI), St. Petersburg, Russia, the University of Washington, Seattle, and the ...


7. Environmental Working Group Joint U.S.-Russian Arctic Sea Ice Atlas, Version 1 [G01962_1]
Note: The Russian chart component of this product has been replaced and updated by Sea Ice Charts of the Russian Arctic in Gridded Format, ...


8. Estonian Mean Snow Depth and Duration (1891-1994), Version 1 [G01174_1]
This data set contains the number of days of snow cover in days per year, and three 10-day snow depth means per month in centimeters from stations across Estonia. The days of snow cover data extend ...


9. GLERL Great Lakes Ice Thickness Data Base, 1966-1979, Version 1 [G00803_1]
During the winters of 1965/66 through 1976/77, NOAA/Great Lakes Environmental Research Laboratory (GLERL) collected weekly ice thickness and stratigraphy data at up to 90 stations per year on the ...


10. Glacier Inventory of West Greenland, Version 1 [G01375_1]
The inventory includes 5,297 Glaciers from west Greenland between 59 to 71 degrees latitude north and 43 to 53 degrees longitude west. The glacier data basin division is based on a simplified version ...


11. Glacier Mass Balance and Regime Measurements and Analysis, 1945-2003, Version 1 [G10002_1]
This data set consists of glacier regime parameters observed between 1945 and 2003. Data include annual mass balances, ablation, accumulation, and equilibrium-line altitude of mountain and subpolar ...


12. Global Lake and River Ice Phenology Database, Version 1 [G01377_1]
The Global Lake and River Ice Phenology Database contains freeze and thaw/breakup dates as well as other descriptive ice cover data for 865 lakes and rivers in the Northern Hemisphere. Of the 542 ...


13. Great Lakes Daily Ice Observations at NOAA Water Level Gauge Sites, Version 1 [G00945_1]
This data set contains daily visual ice observations taken yearly from 1 November to 30 April at NOAA/National Ocean Service water level gauge sites in the Great Lakes Basin from 1956 to the 1997. ...


14. Great Lakes Ice Charts, Version 1 [G00486_1]
These charts show ice extent and concentration three times weekly during the ice season, for all lakes except Ontario, from the 1973/74 ice season through the 2001/2002 ice season. Most charts are ...


15. Great Lakes Surface Ice Reports from U.S. Coast Guard, Version 1 [G00805_1]
Data consist of ice observations from U.S. Coast Guard vessels operating on the Great Lakes and from Coast Guard shore stations reported via teletype messages and ice logging forms. Observations include ...


16. Gridded Monthly Sea Ice Extent and Concentration, 1850 Onward, Version 1 [G10010_1]
Observations from historical sources are the basis of this monthly gridded sea ice concentration product that begins in 1850. In 1979, these sources give way to a single source: concentration from ...


17. Historical Soviet Daily Snow Depth (HSDSD), Version 2 [G01092_2]
The Historical Soviet Daily Snow Depth (HSDSD) product is based on observations from 284 World Meteorological Organization (WMO) stations throughout Russia and the former Soviet Union from 1881 through ...


18. IceBridge Mission Flight Reports, Version 1 [IFLTRPT_1]
The IceBridge Mission Flight Reports data set contains flight reports from NASA Operation IceBridge Greenland, Arctic, Antarctic, and Alaska missions. Flight reports contain information on region, ...


19. International Geophysical Year, 1957-1958: Drifting Station Alpha Documentary Film, Version 1 [G02184_1]
This film documents the activities that occurred on Drifting Station Alpha in the Arctic Ocean during the International Geophysical Year, 1957 to 1958. The film is narrated by project leader, Norbert ...


20. International Ice Patrol (IIP) Iceberg Sightings Database, Version 1 [G00807_1]
The International Ice Patrol (IIP) has been collecting information on iceberg activity in the North Atlantic since 1913. This database contains the data from these sightings from 1960 through most ...


21. International Polar Year Historical Data and Literature, Version 1 [G02201_1]
The International Polar Year Historical Data and Literature collection (formerly known as the Discovery and Access of Historic Literature from the IPYs (DAHLI) project) is an online data collection ...


22. March through August Ice Edge Positions in the Nordic Seas, 1750-2002, Version 1 [G02169_1]
This product contains ice edge coordinates for the Nordic Seas from 1750 through 2002 for months March through August. Ice edge in this product is defined as the outer boundary of ice having at least ...


23. NOAA/NMC/CAC Arctic and Antarctic Monthly Sea Ice Extent, 1973-1990, Version 1 [G00917_1]
Sea ice extent from January 1973 through August 1990 was digitized from weekly operational sea ice charts produced by the Navy/NOAA Joint Ice Center. Charts were digitized by hand using a 1 degree ...


24. National Ice Center Arctic Sea Ice Charts and Climatologies in Gridded Format, Version 1 [G02172_1]
The U.S. National Ice Center (NIC) is an inter-agency sea ice analysis and forecasting center comprised of the Department of Commerce/NOAA, the Department of Defense/U.S. Navy, and the Department ...


25. Polar Stereographic Valid Ice Masks Derived from National Ice Center Monthly Sea Ice Climatologies, Version 1 [NSIDC-0622_1]
These valid ice masks provide a way to remove spurious ice caused by residual weather effects and land spillover in passive microwave data. They are derived from the National Ice Center Arctic Sea ...


26. Reconstructed North American Snow Extent, 1900-1993, Version 1 [G02130_1]
This data set contains reconstructed monthly North American snow extent values for November through March, 1900-1993. Investigators used a combination of satellite and station observations and based ...


27. SMEX03 Vegetation Data: Alabama, Version 1 [NSIDC-0348_1]
This data set includes vegetation data collected over the Soil Moisture Experiment 2003 (SMEX03) area of northern Alabama, USA.


28. SMEX05 Land Use Classification Data: Iowa, Version 1 [NSIDC-0446_1]
Notice to Data Users: The documentation for this data set was provided solely by the Principal Investigator(s) and was not further developed, thoroughly reviewed, or edited by NSIDC. Thus, support ...


29. Sea Ice in the Belcher Islands, Nunavut, Canada, Version 1 [ELOKA002_1]
This data set contains interviews of three hunters from Sanikiliaq, Belcher Islands, in the territory of Nunavut, Canada. The hunters describe their observations of sea ice conditions around the ...


30. The Dehn Collection of Arctic Sea Ice Charts, 1953-1986, Version 1 [G01111_1]
The National Snow and Ice Data Center holds a collection of charts depicting ice conditions in the seas off Alaska and western Canadian coasts. Ice edge position and some ice concentration and other ...


31. The Seasonal Ice Zone Observing Network (SIZONet) Local Observations Interface, Version 1 [ELOKA031_1]
The Seasonal Ice Zone Observing Network Local Observations Interface allows access to observations of sea ice, weather, and wildlife collected since 2006 by Indigenous Inupiaq and Yup'ik sea ice experts ...


32. When the Weather is Uggianaqtuq: Inuit Observations of Environmental Changes, Version 1 [NSIDC-0650_1]
Uggianaqtuq (pronounced OOG-gi-a-nak-took) is a North Baffin Inuktitut word that means to behave unexpectedly, or in an unfamiliar way. From the perspective of many hunters and elders in the Arctic, ...


33. Yup'ik Environmental Knowledge Project, Version 1 [ELOKA032_1]
Over the last ten years the Calista Elders Council (CEC) staff has worked with elders from Bering Sea coastal communities to document Yup'ik place names. Elders have been eager to teach young people ...


34. Arctic Vegetation Plots, Northern NWT and YT, Canada, 1965-1966 [Canadian_West_Arctic_Veg_Plots_1543_1]
This dataset provides vegetation, soil, and plot characteristics for 154 study plots located at three sites across the Richardson Mountains, Northwest Territories (NWT), and the British Mountains, ...


35. ASPeCt bridge-based sea-ice observations - 2007 to 2013 [ASPECT_2007_2013]
The Antarctic Sea ice Processes and Climate [ASPeCt] data sets submitted here have been collected systematically from the bridge of an icebreaker, while it transited through the pack ice. Quantifiable ...


36. ASPeCt ship-based observations during the SIPEX II voyage of the Aurora Australis, 2012 [SIPEX_II_ASPECT]   PARENT METADATA
This dataset contains observations of ice conditions taken from the bridge of the RV Aurora Australis during SIPEX 2012, following the Scientific Committee on Antarctic Research/CliC Antarctic Sea ...


37. Aspen Forest Cover by Stratum/Plot (SNF) [SNF_ASP_CVR_140_1]
Average percent coverage and standard deviation of each canopy stratum from subplots at each aspen site during the SNF study in the Superior National Forest, Minnesota


38. Assessment of the importance of biological nitrogen fixation in the terrestrial ecosytem: Nitrogen fixation rates of Nostoc cyanobacterial mats in the Garwood Valley and at Cape Royds [K053_1986_1987_NZ_1]
Microbes with the nitrogenase enzyme on mosses and soils, particularly the cyanobacteria Nostoc, were examined to investigate the extent and magnitude of the nitrogen fixation process. Sample cores ...


39. Assessment of the rate of contaminant movement through Antarctic soils using a lithium chloride experiment at Lake Vanda [K150_1993_1994_NZ_4]
A leaching trial was set up at Lake Vanda to determine how rapidly and how far water-soluble materials spilt on the soil surface will move. A series of 1 x 1 m plots and control sites on the north ...


40. Assessment of the recovery of damage to mosses (from walking tracks, cores and slab removal) from the Taylor Valley [K024_1989_1990_NZ_3]
It is commonly accepted that mosses in the Dry Valley's grow very slowly. The recovery of mosses was investigated by locating and investigating in detail various damaged sites from previous activity ...


41. Average Annual Layer Thickness of the WAIS Divide Ice Core from Visual Stratigraphy [NSIDC-0603]
This data set includes ~50 m averaged annual layer thicknesses down to 3403 m depth at the West Antarctic Ice Sheet (WAIS) Divide ice core as observed visually using diffuse transmitted light opposite ...


42. Average Annual Layer Thickness of the WAIS Divide Ice Core from Visual Stratigraphy, Version 1 [NSIDC-0603_1]
This data set includes ~50 m averaged annual layer thicknesses down to 3403 m depth at the West Antarctic Ice Sheet (WAIS) Divide ice core as observed visually using diffuse transmitted light ...


43. BOREAS AES Canadian Hourly and Daily Surface Meteorological Data, R1 [boreas_aeshrday_235_2]
This data set contains hourly and daily meteorological data from 23 meteorological stations across Canada from January 1975 to January 1997. The surface meteorology parameters include: date, time, ...


44. BOREAS AES Five-day Averaged Surface Meteorological and Upper Air Data [BOREAS_AES5DAVG_236_1]
Contains 5-day averages of hourly and daily data from 23 meteorological stations across Canada along with full-resolution upper air measurements from 1 station in The Pas, Manitoba.


45. BOREAS CanSIS Regional Soils Data in Vector Format, V2 [CanSIS_Regional_Soils_1347_2]
This data set contains soils data from the Canada Soil Information System (CanSIS) in ESRI Shapefile format for the provinces of Saskatchewan and Manitoba. They are provided as part of the BOReal ...


46. Bathymetric surveys, the geomorphology, glacial chronology, halite investigations, thermokarst formations, overland flow and stream bifurcations of Lake Bonney area [K009_1973_1974_NZ_1]   PARENT METADATA
35 holes were drilled through the ice in the smaller western lobe of Lake Bonney and the bathymetry of the lake was determined. A further 52 holes were used for the eastern lobe bathymetry. Sediment ...


47. Behavioural and corticosterone responses of incubating and confined Adelie penguins to model Weddell seal, model leopard seals and a seal bag, Cape Bird, Ross Island 2003-2004 [K034_2001_2005_NZ_10]
Behavioural and corticosterone responses of incubating Adelie penguins to a model Weddell seal, a model Leopard seal and a seal bag were measured by measuring behaviour and collecting blood samples ...


48. Behavioural observations (frequency and timing of copulation attempts) and paternity analysis from blood samples to investigate sperm competition of adelie penguins (Pygoscelis adeliae) [K063_1993_1998_NZ_1]
Sexual selection theory suggests that males compete for females and females choose males. Sperm competition is one aspect of this competition. There are two possible mechanisms of sperm competition, ...


49. Behavioural observations of nest site selection in Adelie penguins at Cape Bird [K121_1986_1987_NZ_2]
Virtually all penguins return to their natal rookeries to breed, after spending a couple of years at sea. A majority of young birds of both sexes end up settling within 200 m of their natal nest ...


50. Behavioural responses of incubating Adelie penguins to a novel object, Ross Island, 2002-2003 [K034_2001_2005_NZ_7]
The behavioural responses of incubating Adelie penguins to a person standing 1 meter away and to a cardboard shield of similar size to a person also at 1 meter distance were measured to determine ...


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