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| griddap | Subset | tabledap | Make A Graph | wms | files | Accessible | Title | Summary | FGDC | ISO 19115 | Info | Background Info | RSS | Institution | Dataset ID | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| https://polarwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_roughness_icebridge | https://polarwatch.noaa.gov/erddap/tabledap/noaa_lsa_surface_roughness_icebridge.graph | https://polarwatch.noaa.gov/erddap/files/noaa_lsa_surface_roughness_icebridge/ | public | Sea Ice Surface Roughness from IceBridge ATM LIDAR, Arctic, 10km, from 2009 to 2018 Airborne Surveys | This data file contains the NOAA / NESDIS / STAR / LSA Polar Ocean Data System (PODS) Arctic Surface Roughness Product. The Arctic Surface Roughness 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.\n 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 sea ice surface roughness while still containing enough point measurements for robust statistical calculations. Statistics are computed on the distribution of sea ice surface roughness for 10 km along-track segments, for each aircraft flight line.\n\n 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.\n\n Point of Contact: Laurence.Connor@noaa.gov\n\ncdm_data_type = Point\nVARIABLES:\ntime (seconds since 1970-01-01T00:00:00Z)\nlatitude (degrees_north)\nlongitude (degrees_east)\nMean_surface_roughness (Meters)\nMaximum_surface_roughness (Meters)\nSurface_roughness_5th_percentile (Meters)\nSurface_roughness_25th_percentile (Meters)\nSurface_roughness_75th_percentile (Meters)\nSurface_roughness_95th_percentile (Meters)\nSurface_roughness_99th_percentile (Meters)\n | https://polarwatch.noaa.gov/erddap/metadata/fgdc/xml/noaa_lsa_surface_roughness_icebridge_fgdc.xml | https://polarwatch.noaa.gov/erddap/metadata/iso19115/xml/noaa_lsa_surface_roughness_icebridge_iso19115.xml | https://polarwatch.noaa.gov/erddap/info/noaa_lsa_surface_roughness_icebridge/index.htmlTable | https://star.nesdis.noaa.gov/socd/lsa/SeaIce/SeaIceSurfaceRoughness.php
| https://polarwatch.noaa.gov/erddap/rss/noaa_lsa_surface_roughness_icebridge.rss | https://polarwatch.noaa.gov/erddap/subscriptions/add.html?datasetID=noaa_lsa_surface_roughness_icebridge&showErrors=false&email= | NOAA NESDIS STAR | noaa_lsa_surface_roughness_icebridge |