Sea Ice Surface Elevation from IceBridge ATM LIDAR, Arctic, from 2009 to 2018 Airborne Surveys

Project: NOAA NESDIS PolarWatch Institution: NOAA NESDIS PolarWatch InfoURL: https://www.star.nesdis.noaa.gov/sod/lsa/SeaIce/SurfaceElevation.php Source URL: (local files) Sea Ice Surface Elevation from IceBridge ATM LIDAR, Arctic, from 2009 to 2018 Airborne Surveys Unknown tabular digital data College Park, MD, USA ERDDAP, version 2.29.0, at NOAA.GOV https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.graph NOAA NESDIS PolarWatch This dataset contains the NOAA / NESDIS / STAR / LSA Polar Ocean Data System (PODS) Arctic Gridded Surface Elevation Product. The Gridded Surface Elevation Product is derived from Airborne Topographic Mapper (ATM) lidar elevation data acquired during annual, low-altitude NASA Operation IceBridge airborne surveys over Arctic sea ice. IceBridge ATM data were acquired between March and May, 2009 - 2019. Due to the conical scanning geometry of the ATM lidar, across-track sampling is non-uniform, with sampling density greatest at the swath edges. To account for the variation in sample density, ATM elevation data are gridded (See Figure 1 on Data Product Webpage). Each grid cell has an along-track dimension of 30 m and an across-track dimension that is inversely proportional to the across-track sampling density. The grid configuration optimizes ATM sample density providing high-resolution measurements of elevation while still containing enough point measurements for robust statistical calculations. Citation: Users are asked to cite the following publication whenever these data are used: Connor, L., S. Farrell and D. McAdoo (2017), A decadal study of interannual variability in Arctic sea ice freeboard using airborne laser altimetry (2006-2016), presented at the 2017 IGS International Symposium on Polar Ice, Polar Climate, and Polar Change, Boulder, Colorado, 14-19 Aug. 2017. Point of Contact: Laurence.Connor@noaa.gov Data Product Webpage: https://www.star.nesdis.noaa.gov/sod/lsa/SeaIce/SurfaceElevation.php Unknown https://www.star.nesdis.noaa.gov/sod/lsa/SeaIce/SurfaceElevation.php 20090331 20180416 ground condition Complete As needed -179.99844 179.99477 89.99707 67.23399 Uncontrolled along along-track Along_track_Distance Along_Track_Grid_Cell_Number cell data deviation distance elevation grid latitude local longitude num Num_Pts number pts source standard Standard_Deviation statistics time time2 track CF Standard Name Table v70 time longitude latitude None. The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information. NOAA NESDIS PolarWatch Unknown Unknown Mailing and Physical Address

Unknown

Unknown Unknown Unknown Unknown Unknown Unknown https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.graph Web page to make a customized map or graph of the data HTML Unknown Unknown Unknown Unknown Unknown Unknown Point Point NOAA.GOV STAR IT ERDDAP administrator Mailing and Physical Address

5830 University Research CT

College Park MD 20740 USA +1 301 683 3503 coastwatch.info@noaa.gov ERDDAP, version 2.29.0: get metadata; download data; make graphs and maps. The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information. .asc 1 View OPeNDAP-style ISO-8859-1 comma-separated text. https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#ASCII_Service https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .croissant 1 Download the dataset croissant schema. https://docs.mlcommons.org/croissant/docs/croissant-spec.html https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .csv 1 Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). https://en.wikipedia.org/wiki/Comma-separated_values https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .csv0 1 Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. https://en.wikipedia.org/wiki/Comma-separated_values https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .csvp 1 Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. https://en.wikipedia.org/wiki/Comma-separated_values https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .das 1 View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#Dataset_Attribute_Structure https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .dataTable 1 A JSON file formatted for use with the Google Visualization client library (Google Charts). https://developers.google.com/chart/interactive/docs/reference#dataparam https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .dds 1 View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#Dataset_Descriptor_Structure https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .dods 1 OPeNDAP clients use this to download the data in the DODS binary format. https://docs.opendap.org/index.php/UserGuideOPeNDAPMessages#Data_Transmission https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .esriCsv 1 Download a ISO_8859_1 .csv file for ESRI's ArcGIS 9.x and below (separate date and time columns). https://support.esri.com/technical-article/000012745 https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .fgdc 1 View the dataset's UTF-8 FGDC .xml metadata. https://www.fgdc.gov/standards/projects/FGDC-standards-projects/metadata/base-metadata/index_html https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .geoJson 1 Download longitude,latitude,otherColumns data as a UTF-8 GeoJSON .json file. http://wiki.geojson.org/Main_Page https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .htmlTable 1 View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. https://www.w3schools.com/html/html_tables.asp https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .iso19115 1 View the dataset's ISO 19115/19139 UTF-8 .xml metadata using the version default for this server. https://en.wikipedia.org/wiki/Geospatial_metadata https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .iso19115_2 1 View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. https://en.wikipedia.org/wiki/Geospatial_metadata https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .iso19115_3_2016 1 View the dataset's ISO 19115-3:2016 UTF-8 .xml metadata. https://en.wikipedia.org/wiki/Geospatial_metadata https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .iso19139_2007 1 View the dataset's ISO 19139:2007 UTF-8 .xml metadata. https://en.wikipedia.org/wiki/Geospatial_metadata https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .itx 1 Download an ISO-8859-1 Igor Text File. Each response column becomes a wave. https://www.wavemetrics.net/doc/igorman/II-09%20Data%20Import%20Export.pdf https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .json 1 View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). https://www.json.org/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .jsonlCSV 1 View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). https://jsonlines.org/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .jsonlCSV1 1 View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). https://jsonlines.org/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .jsonlKVP 1 View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). https://jsonlines.org/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .mat 1 Download a MATLAB binary file. https://www.mathworks.com/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .nc 1 Download a flat, table-like, NetCDF-3 binary file with COARDS/CF/ACDD metadata. https://www.unidata.ucar.edu/software/netcdf/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .ncCF 1 Download a NetCDF-3 CF Discrete Sampling Geometries file (Contiguous Ragged Array). https://cfconventions.org/Data/cf-conventions/cf-conventions-1.8/cf-conventions.html#discrete-sampling-geometries https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .ncCFHeader 1 View the UTF-8 header (the metadata) for the .ncCF file. https://linux.die.net/man/1/ncdump https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .ncCFMA 1 Download a NetCDF-3 CF Discrete Sampling Geometries file (Multidimensional Array). https://www.ncei.noaa.gov/netcdf-templates https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .ncCFMAHeader 1 View the UTF-8 header (the metadata) for the .ncCFMA file. https://linux.die.net/man/1/ncdump https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .ncHeader 1 View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. https://linux.die.net/man/1/ncdump https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .nccsv 1 Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. https://erddap.github.io/docs/user/nccsv-1.20 https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .nccsvMetadata 1 View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. https://erddap.github.io/docs/user/nccsv-1.20 https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .ncoJson 1 Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. https://nco.sourceforge.net/nco.html#json https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .odvTxt 1 Download longitude,latitude,time,otherColumns as an ISO-8859-1 ODV Generic Spreadsheet File (.txt). https://odv.awi.de/en/documentation/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .parquet 1 Download as a parquet file. Metadata contains column names ("column_names") and units ("column_units"). https://parquet.apache.org/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .parquetWMeta 1 Download as a parquet file with detailed metadata. https://parquet.apache.org/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .tsv 1 Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). https://jkorpela.fi/TSV.html https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .tsv0 1 Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. https://jkorpela.fi/TSV.html https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .tsvp 1 Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. https://jkorpela.fi/TSV.html https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .wav 1 Download a .wav audio file. All columns must be numeric and of the same type. https://en.wikipedia.org/wiki/WAV https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .xhtml 1 View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. https://www.w3schools.com/html/html_tables.asp https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.html .kml 1 View a .kml file, suitable for Google Earth. https://developers.google.com/kml/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.graph .largePdf 1 View a large .pdf image file with a graph or map. https://www.adobe.com/acrobat/about-adobe-pdf.html https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.graph .largePng 1 View a large .png image file with a graph or map. http://www.libpng.org/pub/png/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.graph .pdf 1 View a standard, medium-sized .pdf image file with a graph or map. https://www.adobe.com/acrobat/about-adobe-pdf.html https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.graph .png 1 View a standard, medium-sized .png image file with a graph or map. http://www.libpng.org/pub/png/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.graph .smallPdf 1 View a small .pdf image file with a graph or map. https://www.adobe.com/acrobat/about-adobe-pdf.html https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.graph .smallPng 1 View a small .png image file with a graph or map. http://www.libpng.org/pub/png/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.graph .transparentPng 1 View a .png image file (just the data, without axes, landmask, or legend). http://www.libpng.org/pub/png/ https://coastwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_elevation_icebridge.graph None 20260511 NOAA.GOV STAR IT ERDDAP administrator Mailing and Physical Address

5830 University Research CT

College Park MD 20740 USA +1 301 683 3503 coastwatch.info@noaa.gov Content Standard for Digital Geospatial Metadata FGDC-STD-012-2002 universal time None. The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.