--- - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This collection consists of both analog and digital aerial photographs from Arctic areas in and around Baffin Bay, the Labrador Sea, the Arctic Ocean, the Beaufort and Chukchi Seas, and the Bering Sea and Strait from 1962 to 1984 as well as data reports from 1962 through 1971. The US Navy’s Project Birdseye spanned approximately 1962 to the mid-1980s. Over more than 20 years, the project generated numerous reports as well as visible band photographs and other data. The aerial photographs reside in 99 film canisters, each approximately a foot tall and six inches in diameter containing roughly 400 photographic negatives in a long film roll. Photographs from seven of the canisters have been digitized, resulting in 1752 image files. These are available via FTP along with project reports and documents on the history of Project Birdseye. In addition to the film canisters, two boxes of flight data logs and maps are currently held by NSIDC.' description_attribution: ~ doi: 10.7265/N5NG4NJZ end_time: 1984-12-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g02188.yaml identifier: nsidc-g02188 lat_max: 90 lat_min: 60 lon_max: 30 lon_min: -180 name: 'Project Birdseye Aerial Photograph Collection: Digital and Analog Materials' native_id: G02188 processing_level: ~ publication_year: ~ release_dt: 2014-03-01T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1970-01-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g02188 url: http://nsidc.org/data/G02188 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: "This data set includes soil temperature data from boreholes located at five stations in Russia: Yakutsk, Verkhoyansk, Pokrovsk, Isit', and Churapcha. The data have been compiled into five Microsoft Excel files, one for each station. Each Excel file contains three worksheets: There are two different versions of the Excel files: a complete version and a subsetted version. Both versions exist for each of the five stations for a total of 10 files. The complete versions of the files reside in the directory called complete and have the word full in their filename. These files contain borehole temperature data at all available standard depths: 0.2 m, 0.4 m, 0.6 m, 0.8 m, 1.2 m, 1.6 m, 2.0 m, 2.4 m, and 3.2 m. The subsetted versions of the files reside in the subset directory and have subset in their filename. These files contain data from the 0.8 m and 3.2 m depths only. Missing data are indicated by the value -999.0. The complete version is more applicable to scientific investigation. The subset version is provided for K-12 teachers and is featured in a classroom activity called \"How Permanent is Permafrost?\" We have included air temperature measured at these five stations when it is available. There are two sources for the surface air temperature data: NCAR World Monthly Surface Station Climatology, 1738-cont and NOAA Global Historical Climatology Network (GHCN) Monthly data set. These two sources both draw on the same single original source: data from the World Meteorological Organization (WMO) station network. The complete files have data from one or both sources, while the subset files only include data from the source with the most complete record. These data are being offered as is. NOAA@NSIDC believes these data to be of value but is unable to research and document these data as we do most data sets we publish." description_attribution: ~ doi: 10.7265/N5C24TC5 end_time: 2000-12-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g02189.yaml identifier: nsidc-g02189 lat_max: 67.6 lat_min: 60.8 lon_max: 133.4 lon_min: 125.3 name: 'Soil Temperature Station Data from Permafrost Regions of Russia (Selection of Five Stations), 1880s - 2000' native_id: G02189 processing_level: ~ publication_year: ~ release_dt: 2011-02-17T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1880-01-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g02189 url: http://nsidc.org/data/G02189 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'During the planning and implementation of the International Polar Year (IPY) 2007 - 2009, the International Permafrost Association (IPA) coordinated the acquisition of permafrost temperature data under the Thermal State of Permafrost (TSP) Project #50. The TSP project goals included the acquisition of standardized temperature measurements (snapshots) from all permafrost regions on Earth, preparation of a global data set, and development of maps of contemporary permafrost temperatures. As a result of the project, networks of boreholes, equipped for long-term permafrost temperature observations, were established and consist of approximately 860 boreholes in both hemispheres with more than 25 participating countries. Approximately 350 of the boreholes were drilled and instrumented during the IPY period under various nationally funded projects. Comparison of the current Mean Annual Ground Temperature (MAGT) and historical data allows participating countries and other users to assess the thermal state of permafrost dynamics over the last several decades. The TSP project also included active layer measurements, many of which are observed annually under the Circumpolar Active Layer Monitoring (CALM) project. Future plans are for these networks to become part of an international network of permafrost observatories with data available for monitoring and multidisciplinary research in both polar and non-polar permafrost regions. This data set consists of an inventory of these boreholes in two Excel spreadsheets — one by country (TSP_Borehole_inventory_countries.xls) and one as a composite (TSP_borehole_inventory_composite.xls) for ease in searching. The spreadsheets include the geographic coordinates of the boreholes, elevation, depth of borehole (BH), year drilled, the MAGT, permafrost (PF) thickness, country, responsible person, affiliation, and sponsors. A summary of the number and type of boreholes by country is provided in a PDF document (N_and_S_hemisphere_borehole_summary.pdf), and a high-resolution JPEG image of the borehole locations (TSP_BoreHoles_location_map_highres.jpg) is also included. The inventory lists boreholes in both the Northern and Southern Hemispheres with 790 of the boreholes located in the Northern Hemisphere. The inventory primarily concentrates on measurements from new and existing boreholes from 2007 to 2009. For historical purposes, some boreholes active since the 1980s are included. Boreholes are classified as four different types: surface (SU) <10 m, shallow (SH) 10-25 m, intermediate (IB) 25-125 m, and deep (DB) >125 m according to the Global Terrestrial Network for Permafrost (GTN-P) classification. For Antarctica, the surface boreholes are split into two subclasses: <SU (<2 m) and SU (2-10 m). The TSP is a field component of the Global Terrestrial Network for Permafrost (www.gtnp.org). Data from over 500 of these boreholes are presented and discussed in a series of papers in the special IPY - TSP issue of Permafrost and Periglacial Processes (http://onlinelibrary.wiley.com/doi/10.1002/ppp.v21:2/issuetoc) that include five regional papers and one synthesis paper. The Data Contributors of this data set were senior authors of these papers. All other data contributors are listed under Personnel in the metadata record (http://nsidc.org/cgi-bin/get_metadata.pl?id=g02190) for this data set. The TSP Snapshot Inventory was compiled and edited from individual sources by Alexander Kholodov, Permafrost Laboratory, Geophysical Institute, University of Alaska Fairbanks, and Jerry Brown, President (2003-2008), International Permafrost Association.' description_attribution: ~ doi: 10.7265/N57D2S25 end_time: 2009-12-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g02190.yaml identifier: nsidc-g02190 lat_max: 82.5 lat_min: 31 lon_max: 180 lon_min: -180 name: IPA-IPY Thermal State of Permafrost (TSP) Snapshot Borehole Inventory native_id: G02190 processing_level: ~ publication_year: ~ release_dt: 2010-08-13T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 2007-01-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g02190 url: http://nsidc.org/data/G02190 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This data contains Upward Looking Sonar (ULS) profiles of the underside of the Arctic pack ice along three transects whose total length is 777 nautical miles. The data were obtained by the USS Gurnard (SSN-662), a U.S. Navy submarine, on a traverse of the AIDJEX Main Experiment area in the Beaufort Sea from 07 April 1976 to 10 April 1976. The sea ice thickness derived from the ULS is given in feet. The data are in a single ASCII text file: Aidjex_04_1976_uls.txt. The data in this text file are not formatted into columns; all data are presented in one long row separated by spaces. Little is known about the format of the file, so caution should be used when working with the data. NSIDC is providing this data as part of our effort to preserve historical data. The data file begins with nine values that appear to be header information. These nine values include latitude and longitude values along with other unknown values. After the header, there are approximately 2100 measurements of what NSIDC believes is sea ice thickness in feet, however it is unclear how often these measurements were taken. After these 2100 values, another header of nine values occurs followed again by 2100 measurements. The file continues in this pattern through the remainder of the file. Users with information about the contents of the file are encouraged to contact NSIDC User Services. Two supporting documents that provide some background have been scanned and included as PDF files. These are AIDJEX_ULS_background.pdf and AIDJEX_ULS_format.pdf. These data are available via FTP. Note: These data are in a raw format with unknown fields and are being provided as is for preservation purposes. A processed version of the data are available in the Submarine Upward Looking Sonar Ice Draft Profile Data and Statistics data set.' description_attribution: http://nsidc.org/data/g01360.html doi: 10.7265/N5X63JV3 end_time: 1976-04-10T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g02191.yaml identifier: nsidc-g02191 lat_max: 76 lat_min: 70 lon_max: -137 lon_min: -155 name: AIDJEX Beaufort Sea Upward Looking Sonar April 1976 native_id: G02191 processing_level: ~ publication_year: ~ release_dt: 2013-08-28T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1976-04-07T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g02191 url: http://nsidc.org/data/G02191 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This data set consists of estimates of mean values of sea-ice thickness and sea-ice draft in meters computed from three different input data sets: sea ice draft from Upward Looking Sonar (ULS) mounted on submarines, sea ice draft from ULS mounted on bottom-anchored moorings, and a simulated ice-thickness model. The data span from 1979 to 2004 and cover two regions centered around the North Pole. One region, Region A, is north of 89 degrees N; and the other, Region B, is north of 87 degrees N. The data set consists of one ASCII text file. The data are available via FTP.' description_attribution: http://nsidc.org/data/g01360.html doi: 10.7265/N53N21BT end_time: 2004-12-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g02194.yaml identifier: nsidc-g02194 lat_max: 90 lat_min: 89 lon_max: 180 lon_min: -180 name: 'Sea-ice Thickness and Draft Statistics from Submarine ULS, Moored ULS, and a Coupled Model' native_id: G02194 processing_level: ~ publication_year: ~ release_dt: 2011-10-18T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1979-01-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g02194 url: http://nsidc.org/data/G02194 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: "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 processing and treatment are given in the contributor's PhD thesis (Konig 2007), provided through the PhD Thesis link above. The data are provided in netCDF format. The time span over which data are available is split into 3 ranges: for 1953-1967 there are only AARI data, for 1968-1990 both AARI and CIS data are available, and from 1991-1998 only CIS data are available. There are a total of six files: two for the 1953-1967 data, two for the 1968-1990 data, and two for the 1991-1998 data. There are two files for each range because the files with \"_noNaN\" in their names contain \"-1000\" as the missing value, and the other files use \"nan\" as the missing value. Otherwise the data in those files are identical. AARI data were obtained from NSIDC data set AARI 10-Day Arctic Ocean EASE-Grid Sea Ice Observations (Fetterer and Troisi, 1997) that was later replaced by Sea Ice Charts of the Russian Arctic in Gridded Format, 1933-2006 (AARI, 2007). Fetterer, F., and V. Troisi. 1997. AARI 10-Day Arctic Ocean EASE-Grid Sea Ice Observations. Boulder, CO, USA: National Snow and Ice Data Center. http://nsidc.org/data/nsidc-0050.html. Arctic and Antarctic Research Institute. 2007. Sea ice charts of the Russian Arctic in gridded format, 1933-2006. Edited and compiled by V. Smolyanitsky, V. Borodachev, A. Mahoney, F. Fetterer, and R. Barry. Boulder, Colorado USA: National Snow and Ice Data Center. http://nsidc.org/data/g02176.html. Notice to Data Users: The documentation for this data set was provided solely by the contributor and was not further developed, thoroughly reviewed, or edited by NSIDC. Thus, support for this data set may be limited." description_attribution: http://nsidc.org/data/nsidc-0050.html doi: 10.7265/N5ZW1HV4 end_time: 1998-12-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g02195.yaml identifier: nsidc-g02195 lat_max: 90 lat_min: 55 lon_max: 180 lon_min: -180 name: Arctic Landfast Sea Ice 1953-1998 native_id: G02195 processing_level: ~ publication_year: ~ release_dt: 2012-11-01T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1953-01-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g02195 url: http://nsidc.org/data/G02195 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: "The purpose of this program was to collect data relevant to developing year-round transportation capabilities in the Arctic Ocean. The US Maritime Administration sponsored this multi-year program to define environmental conditions in the Bering, Chukchi, and Beaufort Seas; to obtain data to improve design criteria for ice-worthy ships and offshore structures; and to demonstrate the operational feasibility of commercial icebreaking ships along possible future Arctic marine routes. The research was performed using the US Coast Guard Polar Star and Polar Sea ice-class ships, which were at the time the world's most powerful non-nuclear icebreakers and the only US ships capable of mid-winter Arctic operations. The items in this data set are PDFs of Arctic Marine Transportation reports with embedded data, along with a PDF of the Achievement Record Brochure (Achievement_Record_1979_1984_Brochure.pdf), and JPEG images providing a historical context of the program. The 15 JPEG images and a PDF of accompanying captions (G02196_images_captions.pdf) are located in the images directory. The PDF reports, an Executive Summary (Executive_Summary_Arctic_Marine_Transportation_Program.pdf), and the Appendix to the Executive Summary (Executive_Summary_Arctic_Marine_Transportation_Program_Appendix_A_List_of_Reports.pdf) are located in the Arctic_Marine_Transportation_Reports directory. Note that page 33 of the Executive Summary is missing. The Appendix to the Executive Summary contains an index of reports included in this data set. This index lists 64 reports; however, out of these 64, the following reports were never included and their location is unknown: 1, 4, 36, 37, 60, 61, and 62. Also note that reports 35 and 44 come in two parts. The data cover the years 1979 to 1986 and were collected from ships in the Bering, Chukchi, and Beaufort Seas. Data are available via FTP. This data is being provided as is. NOAA@NSIDC believes these data to be of value, but is unable to provide documentation. If you have information about this data set that others would find useful, please contact NSIDC User Services." description_attribution: ~ doi: 10.7265/N5V40S44 end_time: 1986-12-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g02196.yaml identifier: nsidc-g02196 lat_max: 90 lat_min: 54 lon_max: 180 lon_min: -180 name: Arctic Marine Transportation Program 1979-1986 native_id: G02196 processing_level: ~ publication_year: ~ release_dt: 2010-07-25T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1979-01-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g02196 url: http://nsidc.org/data/G02196 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'These data are daily dust count observations taken in College-Fairbanks, Alaska from 23 March 1933 to 29 August 1933. The data are part of a larger collection titled "Second International Polar Year Records, 1931-1936, Department of Terrestrial Magnetism, Carnegie Institute of Washington." Within this larger collection, the data are identified as "Series 1: College-Fairbanks IPY Station Records and Data, 1932-1934: Subseries C: Auroral and Meterological Records and Data, 1932-1933: Dust Count Observations, March 1933 - August 1933." The data are provided in a PDF copy of the handwritten entries (Dust_Count_Observations_March1933_to_August1933.pdf). Two supporting files are also included in this data set. The first is a copy of the handwritten data transcribed to a Microsoft Excel spreadsheet (Dust_Count_Observations_March1933_to_August1933.xls). The second is a PDF document that explains the larger collection (DTM_Collection_Description.pdf). The entries were recorded using an Aitken Dust Counter. Each entry includes up to 10 counts per day with measurements of wind, clouds, and visibility. The handwritten copy has the most complete data, as some of the handwritten notes were not transcribed into the computer spreadsheet. For example, handwritten notes concerning problems with the counter itself were not transcribed into the computer spreadsheet. The data are available via FTP. NOAA@NSIDC believes these data to be of value but is unable to provide documentation. If you have information about this data set that others would find useful, please contact NSIDC User Services.' description_attribution: ~ doi: 10.7265/N5QC01DS end_time: 1933-08-29T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g02199.yaml identifier: nsidc-g02199 lat_max: 64.9 lat_min: 64.8 lon_max: -147.8 lon_min: -147.9 name: 'Dust Count Observations March 1933 - August 1933 in College-Fairbanks, AK' native_id: G02199 processing_level: ~ publication_year: ~ release_dt: 2010-12-10T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1933-03-23T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g02199 url: http://nsidc.org/data/G02199 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'The Sea Ice Experiment - Dynamic Nature of the Arctic (SEDNA) is an international collaborative effort to improve the understanding of the interaction between sea ice dynamics and Arctic climate. It was also the first International Polar Year 2007-2008 field project. The SEDNA data portal provides access to many and varied data sets from the diverse set of campaign participants. The data portal holds 37 entries from remote sensing to in situ measurements collected during the ice camp in March and April 2007. This data collection is distributed by the International Arctic Research Center (IARC) at the University of Alaska Fairbanks (UAF). NSIDC maintains the metadata for this data collection, so the data are easier to find through the NSIDC data catalog and those catalogs with which NSIDC shares metadata. This summary and metadata are accurate as of June 2011. The UAF archive site may have more recent data updates and publications, please visit their site for the most up-to-date information. The mass balance of sea ice and the evolution of sea ice thickness distribution is a key component of the Arctic system. It is controlled by thermodynamic ice growth and melt, mechanical redistribution through ridging and rafting, and transport. The SEDNA experiment was designed in a regional Lagrangian frame of reference and tracked the evolution of a region of ice surrounding the Applied Physics Laboratory Ice Station (APLIS) 2007 ice camp in an effort to evaluate the role of mechanical redistribution on ice thickness distribution. The SEDNA data collection is unique in that several ice thickness data sets were inter-calibrated and coordinated with monitoring of the ice pack strain-rate (horizontal deformation) and measurements of internal ice stress. This experiment was designed to improve our understanding of the relationship between sea ice thickness and dynamics and to investigate the stress and strain-rate relationships with a comprehensive suite of spatio-temporal coincident observations. Measurements were made with the aim of resolving the time evolving ice thickness distribution in the vicinity of the ice camp, to map ice pack deformation (strain-rate), and track strain-rate and internal ice stress in time. This has required a detailed inter-comparison of ice thickness measurements from a number of sources including submarine upward looking sonar (ULS) (Peter Wadhams), AUV multi-beam ULS (Peter Wadhams and Martin Doble), airborne LIDAR (Rene Forsberg), Helicopter borne electromagnetic induction (EMI) (Christian Haas), and in situ snow and ice measurements with drill and EM-31 soil surveyor (Cathy Geiger and Jackie Richter-Menge). Sea ice deformation was mapped in near-real time from analysis of RADARSat-1 ScanSAR-B by the Map of Moving Topography method (Mani Thomas, Chandra Kambhattmettu, and Cathy Geiger), and high temporal sampling was achieved with an array of GPS drifting buoys (Jenny Hutchings). Matt Pruis used GPS buoys to measure deformation of single leads. Ice stress and mass balance were measured with CRREL stress buoys (Jackie Richter-Menge). Additional measurements include a 3-m weather station (Andrew Roberts), CTD profiles every six hours (Jeremy Wilkinson), downward looking Acoustic Doppler Current Profiler (ADCP), and met-buoys (Ignatius Rigor). Data are generally available in three formats: the original format, netCDF, and ASCII. The original version is not always well documented. The netCDF version includes carefully collected documentation placed in the header fields of the netCDF file. Often, data are also available in a separate ASCII file as columns of data concatenated behind the netCDF header information in plain text form. SEDNA is supported by the NSF Grant "Collaborative Research: Detailed Investigation of the Dynamic Component of Sea Ice Mass Balance" (OPP ARC 0612527 (UAF), 0611991 (CRREL), and 0612105 (University of Delaware)).' description_attribution: ~ doi: 10.7265/N5KK98PH end_time: 2007-06-30T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g02200.yaml identifier: nsidc-g02200 lat_max: 76 lat_min: 70 lon_max: -130 lon_min: -170 name: 'SEDNA: Sea ice Experiment - Dynamic Nature of the Arctic' native_id: G02200 processing_level: ~ publication_year: ~ release_dt: 2011-05-19T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 2007-02-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g02200 url: http://nsidc.org/data/G02200 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: "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 consisting primarily of photographs, publications, and observational data records from, and relating to, the first two International Polar Years (IPY) 1882-83 and 1932-33 and the International Geophysical Year (IGY)1957-58. Examples of data contained in observational records include, but are not limited to: air magnetic vertical intensity, air conductivity, atmospheric-electric observations, auroral log data, potential-gradient electrographic data, dust counts, and meteorological observations. Photographs within the collection include those from the Wilkes Station in Antarctica, the USGS survey of Fletcher's Ice Island, and the DTM Geophysical Laboratory Library. Publications within this collection primarily consist of government (national and international) bulletins and reports on activities during the International Polar and International Geophysical years. Other data include audio files of interviews recorded during NCAR's Oral Histories Project, and a video on Drifting Station Alpha during the IGY, published by NSIDC. Data were contributed by several institutions: the University of Colorado Libraries, the Carnegie Institution of Washington, National Snow and Ice Data Center (NSIDC), and The National Center for Atmospheric Research (NCAR). The data collection contains approximately 800 digital objects, formats of these objects include: PDF, TIFF, JPEG, MP3, and MPEG. Most objects are freely accessible and downloadable, except where prohibited by copyright. Temporal coverage of this data collection is between the years 1882 and 1958. Geographical coverage is global, with data originating from Europe, Asia, North America, and South America and relating primarily to specific glaciers and other locations in North America (Alaska and Canada) and Antarctica. All materials without use constraints are accessible by the public through the ROCS Archives Catalog. Reference images and PDFs of publications and data are available for immediate viewing and download. Please request high resolution TIFF image files through the Archives catalog." description_attribution: ~ doi: 10.7265/N5FT8HZS end_time: 2007-12-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g02201.yaml identifier: nsidc-g02201 lat_max: 90 lat_min: -90 lon_max: 180 lon_min: -180 name: International Polar Year Historical Data and Literature native_id: G02201 processing_level: ~ publication_year: ~ release_dt: 2011-08-01T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1882-01-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g02201 url: http://nsidc.org/data/G02201 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This data set provides a Climate Data Record (CDR) of sea ice concentration from passive microwave data. It provides a consistent, daily and monthly time series of sea ice concentrations from 09 July 1987 through through most recent processing for both the north and south polar regions on a 25 km x 25 km grid. The NOAA/NSIDC CDR is based on the recommendations from the National Research Council (NRC) (2004). It is produced from gridded brightness temperatures from the Defense Meteorological Satellite Program (DMSP) F8, F11, and F13 Special Sensor Microwave Imager (SSM/I) passive microwave radiometers and the DMSP F17 Special Sensor Microwave Imager/Sounder (SSMIS) passive microwave radiometer. The NOAA/NSIDC CDR sea ice concentrations are an estimate of the fraction of ocean area covered by sea ice that is produced by combining concentration estimates created using two algorithms developed at the NASA Goddard Space Flight Center (GSFC): the NASA Team algorithm (Cavalieri et al., 1984) and the Bootstrap algorithm (Comiso, 1986). NSIDC applies the individual algorithms to brightness temperature data from Remote Sensing Systems, Inc. (RSS). The data are gridded on the NSIDC polar stereographic grid with 25 x 25 km grid cells and are available in netCDF file format. Each file includes four different sea ice concentration variables: a variable with the primary CDR sea ice concentrations created by NSIDC and three variables with sea ice concentrations created by Goddard. The three Goddard-produced sea ice concentrations are the Goddard NASA Team algorithm sea ice concentrations, the Goddard Bootstrap sea ice concentrations, and a merged version of the two sea ice concentrations. These Goddard-produced sea ice concentrations are included in the data files for a number of reasons. First, the merged Goddard NASA Team/Bootstrap sea ice concentrations are an ancillary data set that is analogous to the NOAA/NSIDC CDR data but that adds late 1978 through mid 1987 data to the record. A different instrument, the Scanning Multichannel Microwave Radiometer (SMMR), was the source for the brightness temperatures from this period. Sea ice concentrations from the extended period are not part of the primary NSIDC-produced CDR record because complete documentation of the SMMR brightness temperature processing method is not available. Second, the separate Goddard NASA Team and Bootstrap sea ice concentrations are provided for reference. Variables containing standard deviation, quality flags, and projection information are also included in the netCDF files.' description_attribution: http://nsidc.org/data/nsidc-0001.html doi: 10.7265/N55M63M1 end_time: 2013-12-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g02202.yaml identifier: nsidc-g02202 lat_max: 89.84 lat_min: 31.1 lon_max: 180 lon_min: -180 name: NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration native_id: G02202 processing_level: ~ publication_year: ~ release_dt: 2013-06-20T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1978-10-26T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g02202 url: http://nsidc.org/data/G02202 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'From 1893 to 1956, the Danish Meteorological Institute (DMI) created charts of observed and inferred sea ice extent for each summer month. These charts are based on compiled observations of ice conditions reported by a variable network of national organizations, shore-based observers, scientific expeditions, and ships as detailed in each report; in cases where no observations were available, the lead mapmakers extrapolated further ice cover using their knowledge of ice movement. Except for where direct observations are indicated, caution is advised in using the charts’ ice edge because there is no way to quantify the assumptions used in extrapolating ice edge or the error involved in this method. See the note on reliability for further discussion of potential error. The charts were scanned at the Icelandic Meteorological Office (IMO) and are being made available here as a service and in cooperation with DMI and other contributors. In all, there are 266 image files containing 291 images.' description_attribution: http://nsidc.org/data/g01111.html doi: 10.7265/N56D5QXC end_time: 1956-08-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g02203.yaml identifier: nsidc-g02203 lat_max: 90 lat_min: 55 lon_max: 180 lon_min: -180 name: 'Arctic Sea Ice Charts from Danish Meteorological Institute, 1893 - 1956' native_id: G02203 processing_level: ~ publication_year: ~ release_dt: 2012-11-16T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1893-04-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g02203 url: http://nsidc.org/data/G02203 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: '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 glaciers outside the two major ice sheets. All available sources of information, such as publications, archived data, and personal communications have been collected, and include time series of more than 300 glaciers. Data have been digitized and quality checked. The data are available on CD-ROM from the Institute of Arctic and Alpine Research (INSTAAR) when a hardcopy of INSTAAR Occasional Paper #55 is ordered, or on FTP from NSIDC.' description_attribution: ~ doi: 10.7265/N52N506F end_time: 2003-12-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g10002.yaml identifier: nsidc-g10002 lat_max: 90 lat_min: -90 lon_max: 180 lon_min: -180 name: 'Glacier Mass Balance and Regime Measurements and Analysis, 1945-2003' native_id: G10002 processing_level: ~ publication_year: ~ release_dt: 2002-01-01T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1945-01-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g10002 url: http://nsidc.org/data/G10002 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: "This data set is comprised of scientific field study notebooks from geologist Carl S. Benson describing his traverses of Greenland from 1952 to 1955. The notebooks contain data on Greenland snow accumulation, snow temperature, stratigrapy, ice sheet facies, and snow densification. Dr. Benson's notebooks also include a supplementary 1956 snow accumulation study done by the U.S. Air Force. The notebooks have been scanned and put into PDF format. In addition, a compendium of Greenland snow accumulation data, compiled by Dr. Benson in 1986, is included that spans 1911 to 1981. It is in ASCII text format. During a four-year period from 1952 through 1955, Carl Benson, along with many other individuals and several other organizations, dug and studied 146 snow pits and made 288 supplementary snow hardness profiles with a ramsonde instrument along a 1100 mile traverse in Northwest Greenland (Benson 1962). For each exposed pit, temperature, density, ram hardness, and grain size were measured. The data in the notebooks include a listing of all pit locations, a summary matrix of data collected at each station; accumulation data adjusted for Fall 1954 and Fall 1955 reference horizons; average accumulation for all stations; integrated ram hardness (snow density); descriptive stratigraphy, pit profile temperature and density; and pit and core temperature, density, ram hardness, and stratigraphy for each location. Benson's notebooks for 1952 through 1954 were scanned at NSIDC and are available via FTP. As of January 2013, the 1955 notebooks are still in the process of being digitized. The physical notebooks are available for use on-site at NSIDC by appointment." description_attribution: ~ doi: 10.7265/N5RN35SK end_time: 1981-12-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g10004.yaml identifier: nsidc-g10004 lat_max: 78 lat_min: 69 lon_max: -38 lon_min: -69 name: Greenland Snow Pit and Core Stratigraphy (Analog and Digital Formats) native_id: G10004 processing_level: ~ publication_year: ~ release_dt: 2013-01-31T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1911-01-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g10004 url: http://nsidc.org/data/G10004 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'The MASIE-AMSR2 (MASAM2) daily 4 km sea ice concentration is a prototype concentration product that is a blend of two other daily sea ice data products: ice coverage from the Multisensor Analyzed Sea Ice Extent (MASIE) product at a 4 km grid cell size and ice concentration from the Advanced Microwave Scanning Radiometer 2 (AMSR2) at a 10 km grid cell size. MASAM2 was developed to meet a need for greater accuracy and higher resolution in ice concentration fields that are used to initialize an operational sea ice forecast model. By applying some simple rules to blend the two sources, a 4 km concentration product is produced that can be used in the model. This prototype only covers 27 months, from July 2012 to mid-November 2014.' description_attribution: ~ doi: 10.7265/N5ZS2TFT end_time: 2014-11-12T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g10005.yaml identifier: nsidc-g10005 lat_max: 90 lat_min: 29.08 lon_max: 180 lon_min: -180 name: 'MASAM2: Daily 4 km Arctic Sea Ice Concentration, 2012-2014' native_id: G10005 processing_level: ~ publication_year: ~ release_dt: 2015-03-26T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 2012-07-03T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g10005 url: http://nsidc.org/data/G10005 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'The Unified Sea Ice Thickness Climate Data Record is the result of a concerted effort to collect as many observations as possible of Arctic sea-ice draft, freeboard, and thickness and to format them consistently with clear documentation, allowing the scientific community to better utilize what is now a considerable body of observations. The Unified Sea Ice Thickness Climate Data Record includes data from moored and submarine-based upward looking sonar (ULS) instruments, airborne electromagnetic (EM) induction instruments, satellite laser altimeters (ICESat), and airborne laser altimeters (IceBridge). These instruments offer adequate sampling, starting in 1975, to establish the mean Arctic sea-ice thickness and the sea-ice thickness distribution at scales generally appropriate for change detection and climate model validation. The Unified Sea Ice Thickness Climate Data Record consists of 15 different data sets. Each data set consists of a Summary file and a Distribution file. The Unified Sea Ice Thickness Climate Data Record does not currently contain Antarctic sea-ice data but is open to accepting such data.' description_attribution: ~ doi: 10.7265/N5D50JXV end_time: 2012-08-21T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g10006.yaml identifier: nsidc-g10006 lat_max: 90 lat_min: 60 lon_max: 180 lon_min: -180 name: Unified Sea Ice Thickness Climate Data Record Collection Spanning 1947-2012 native_id: G10006 processing_level: ~ publication_year: ~ release_dt: 2013-11-14T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1947-09-22T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g10006 url: http://nsidc.org/data/G10006 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: '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 (DMI). These were used to create estimates for each summer month from 1901 to 1956 by manual, subjective interpretation of scanned versions of the charts. These estimates, shown in colored-coded fields, are available as image files in JPEG format and as GIS shapefiles.' description_attribution: http://nsidc.org/data/g02203.html doi: 10.7265/N5MP517M end_time: 1956-08-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g10007.yaml identifier: nsidc-g10007 lat_max: 90 lat_min: 55 lon_max: 180 lon_min: -180 name: 'Arctic Sea Ice Concentration and Extent from Danish Meteorological Institute Sea Ice Charts, 1901-1956' native_id: G10007 processing_level: ~ publication_year: ~ release_dt: 2014-01-31T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1901-04-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g10007 url: http://nsidc.org/data/G10007 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: "ClimoBase is a collection of surface climate measurements collected in Northern Canada by Dr. Wayne Rouse between 1984 and 1998 in three locations: Churchill, Manitoba; Marantz Lake, Manitoba; and Inuvik, Northwest Territories. These data are comprised of surface-climate measurements, including solar time, wind speed, wind direction, dry-bulb, wet-bulb, and vapor pressure in 24 sites focused at the three Northern Canadian locations. The sites were chosen to include a variety of terrains in the study: sedge fen wetland, willow-birch wetland, lichen-heath, bedrock boulders/heath, spruce- tamarack forest, tundra lake, creek, various (e.g. a basin: sedge, willow, lichen-heath, forest, etc.), sparse vegetation (short grass/sedge, heath spp.), and coastal marsh (tall grass, sandy soils). The measurements were taken in increments ranging from seasonally to every 15 minutes. In all, 177 different variables were measured and recorded. The data are valuable due to their unique and consistent nature. ClimoBase was created to provide a central repository for Dr. Wayne Rouse's raw field data. Dr. Rouse is now Professor Emeritus at McMaster University, Hamilton, Ontario. Dr. Rouse was considered by the Canadian Association of Geographers (CAG) to have \"pioneered field research on the evaporation of high latitude sites, including woodlands, tundra, wetland and lake surfaces\" (1998). He received the 1998 CAG Award for Scholarly Distinction in Geography. In 2001, Dr. Roger Barry, the Director of NSIDC at the time, received a copy of ClimoBase for NSIDC. We are publishing these data now as part of an effort to help assure the preservation of small data collections that are not part of a larger funded program, and that may receive wider use through documentation and distribution on line." description_attribution: ~ doi: 10.7265/N5FX77CH end_time: 1998-12-31T00:00:00 href: http://52.38.26.42:8080/dataset/nsidc-g10008.yaml identifier: nsidc-g10008 lat_max: 68.736944 lat_min: 58.133333 lon_max: -93.816667 lon_min: -133.505278 name: 'ClimoBase: Rouse Canadian Surface Observations of Weather, Climate, and Hydrological Variables, 1984-1998' native_id: G10008 processing_level: ~ publication_year: ~ release_dt: 2014-07-08T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1984-05-14T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/nsidc-g10008 url: http://nsidc.org/data/G10008 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: "SERVIR is a Spanish acronym for 'Regional Visualization and Monitoring System.' The SERVIR project enables the use of Earth observations and predictive models for timely decision making through regional platforms in Mesoamerica, East Africa, and the Hindu-Kush Himalayas.  The SERVIR project was initially developed by NASA, the US Agency for International Development, the World Bank, the Central American Commission for Environment and Development (CCAD), and the Water Center for the Humid Tropics of Latin America and the Caribbean (CATHALAC) in 2005.   In 2008, the Regional Center for Mapping of Resources for Development (RCMRD) in Nairobi, Kenya, joined the SERVIR project, and in 2010, SERVIR inaugurated its third hub at the International Centre for Integrated Mountain Development (ICIMOD) in Kathmandu, Nepal.   SERVIR also stands for the Spanish verb 'to serve,' which is what the project aims to do in terms of providing improved access to data and knowledge for decision-making." description_attribution: ~ doi: ~ end_time: ~ href: http://52.38.26.42:8080/dataset/servir-data-catalog.yaml identifier: servir-data-catalog lat_max: ~ lat_min: ~ lon_max: ~ lon_min: ~ name: SERVIR Data Catalog native_id: ~ processing_level: ~ publication_year: ~ release_dt: ~ scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: ~ temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/servir-data-catalog url: https://www.servirglobal.net/Global/MapsData.aspx variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'Contains bioassay records and data for chemicals analyzed and evaluated for repellency, toxicity, reproductive inhibition, and immobilization.' description_attribution: ~ doi: ~ end_time: ~ href: http://52.38.26.42:8080/dataset/usda-aphis-00003.yaml identifier: usda-aphis-00003 lat_max: ~ lat_min: ~ lon_max: ~ lon_min: ~ name: National Wildlife Chemical Effects Database native_id: ~ processing_level: ~ publication_year: ~ release_dt: ~ scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: ~ temporal_extent: ~ temporal_resolution: ~ type: ~ uri: /dataset/usda-aphis-00003 url: https://www.aphis.usda.gov/aphis/ourfocus/wildlifedamage/programs/nwrc/sa_information_services/ct_chemical_effects variables: ~ version: ~ vertical_extent: ~