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PolarWatch ERDDAP
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Brought to you by NOAA NMFS SWFSC ERD |
| Grid DAP Data | Sub- set | Table DAP Data | Make A Graph | W M S | Source Data Files | Title | Sum- mary | FGDC, ISO, Metadata | Back- ground Info | RSS | E | Institution | Dataset ID |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| data | graph | files | Sea Ice Surface Roughness from IceBridge ATM LIDAR, Arctic, 10km, from 2009 to 2018 Airborne Surveys |
| F I M | background
| 
| 
| NOAA NESDIS STAR | noaa_lsa_surface_roughness_icebridge |
| Row Type | Variable Name | Attribute Name | Data Type | Value |
|---|---|---|---|---|
| attribute | NC_GLOBAL | cdm_data_type | String | Point |
| attribute | NC_GLOBAL | Conventions | String | COARDS, CF-1.6, ACDD-1.3 |
| attribute | NC_GLOBAL | creator_name | String | NOAA |
| attribute | NC_GLOBAL | creator_type | String | institution |
| attribute | NC_GLOBAL | creator_url | String | https://star.nesdis.noaa.gov/socd/lsa |
| attribute | NC_GLOBAL | defaultGraphQuery | String | time%2CSurface_roughness_99th_percentile%2C&time>=2018-04-10T00%3A00%3A00Z&time%3C%3D2018-04-17T00%3A00%3A00Z&.draw=markers&.marker=5%7C5&.color=0x000000 |
| attribute | NC_GLOBAL | Easternmost_Easting | double | 179.832076042 |
| attribute | NC_GLOBAL | featureType | String | Point |
| attribute | NC_GLOBAL | geospatial_lat_max | double | 89.975968808 |
| attribute | NC_GLOBAL | geospatial_lat_min | double | 67.27580708 |
| attribute | NC_GLOBAL | geospatial_lat_units | String | degrees_north |
| attribute | NC_GLOBAL | geospatial_lon_max | double | 179.832076042 |
| attribute | NC_GLOBAL | geospatial_lon_min | double | -179.841429911 |
| attribute | NC_GLOBAL | geospatial_lon_units | String | degrees_east |
| attribute | NC_GLOBAL | infoUrl | String | https://star.nesdis.noaa.gov/socd/lsa/SeaIce/SeaIceSurfaceRoughness.php |
| attribute | NC_GLOBAL | institution | String | NOAA NESDIS STAR |
| attribute | NC_GLOBAL | keywords | String | Earth Science > Climate Indicators > Cryospheric Indicators, Earth Science > Climate Indicators > Cryospheric Indicators > Sea Ice Elevation, Earth Science > Cryosphere > Sea Ice, Earth Science > Cryosphere > Sea Ice> Sea Ice Elevation, Surface Roughness |
| attribute | NC_GLOBAL | keywords_vocabulary | String | GCMD Science Keywords |
| attribute | NC_GLOBAL | license | String | Users are free to use the information hosted on this site in their research, provided credit is given to the NOAA National Environmental Satellite, Data, and Information Service (NESDIS) Center for Satellite Applications and Research (STAR) Laboratory for Satellite Altimetry (LSA). Data and images displayed on NOAA/NESDIS/STAR sites are provided for experimental use only and are not official operational NOAA products. More information is available at: http://www.star.nesdis.noaa.gov/star/productdisclaimer.php 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. |
| attribute | NC_GLOBAL | Northernmost_Northing | double | 89.975968808 |
| attribute | NC_GLOBAL | sourceUrl | String | (local files) |
| attribute | NC_GLOBAL | Southernmost_Northing | double | 67.27580708 |
| attribute | NC_GLOBAL | standard_name_vocabulary | String | CF Standard Name Table v55 |
| attribute | NC_GLOBAL | summary | String | 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. 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. 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 |
| attribute | NC_GLOBAL | time_coverage_end | String | 2018-04-16T16:30:01Z |
| attribute | NC_GLOBAL | time_coverage_start | String | 2009-03-31T12:28:41Z |
| attribute | NC_GLOBAL | title | String | Sea Ice Surface Roughness from IceBridge ATM LIDAR, Arctic, 10km, from 2009 to 2018 Airborne Surveys |
| attribute | NC_GLOBAL | Westernmost_Easting | double | -179.841429911 |
| variable | time | double | ||
| attribute | time | _CoordinateAxisType | String | Time |
| attribute | time | actual_range | double | 1.238502521E9, 1.523896201E9 |
| attribute | time | axis | String | T |
| attribute | time | ioos_category | String | Time |
| attribute | time | long_name | String | Time |
| attribute | time | standard_name | String | time |
| attribute | time | time_origin | String | 01-JAN-1970 00:00:00 |
| attribute | time | time_precision | String | 1970-01-01T00:00:00Z |
| attribute | time | units | String | seconds since 1970-01-01T00:00:00Z |
| variable | latitude | double | ||
| attribute | latitude | _CoordinateAxisType | String | Lat |
| attribute | latitude | actual_range | double | 67.27580708, 89.975968808 |
| attribute | latitude | axis | String | Y |
| attribute | latitude | colorBarMaximum | double | 90.0 |
| attribute | latitude | colorBarMinimum | double | -90.0 |
| attribute | latitude | comment | String | The average latitude of measurements in the 10km segment |
| attribute | latitude | ioos_category | String | Location |
| attribute | latitude | long_name | String | Latitude |
| attribute | latitude | standard_name | String | latitude |
| attribute | latitude | units | String | degrees_north |
| variable | longitude | double | ||
| attribute | longitude | _CoordinateAxisType | String | Lon |
| attribute | longitude | actual_range | double | -179.841429911, 179.832076042 |
| attribute | longitude | axis | String | X |
| attribute | longitude | colorBarMaximum | double | 180.0 |
| attribute | longitude | colorBarMinimum | double | -180.0 |
| attribute | longitude | comment | String | The average longitude of measurements in the 10km segment |
| attribute | longitude | ioos_category | String | Location |
| attribute | longitude | long_name | String | Longitude |
| attribute | longitude | standard_name | String | longitude |
| attribute | longitude | units | String | degrees_east |
| variable | Mean_surface_roughness | float | ||
| attribute | Mean_surface_roughness | actual_range | float | 0.02, 0.77 |
| attribute | Mean_surface_roughness | comment | String | Arithmetic mean of all surface roughness measurements in 10km segment |
| attribute | Mean_surface_roughness | ioos_category | String | Surface Waves |
| attribute | Mean_surface_roughness | long_name | String | Mean Surface Roughness |
| attribute | Mean_surface_roughness | units | String | Meters |
| variable | Maximum_surface_roughness | float | ||
| attribute | Maximum_surface_roughness | actual_range | float | 0.04, 3.71 |
| attribute | Maximum_surface_roughness | comment | String | Maximum value of surface roughness in 10km segment |
| attribute | Maximum_surface_roughness | ioos_category | String | Surface Waves |
| attribute | Maximum_surface_roughness | long_name | String | Maximum Surface Roughness |
| attribute | Maximum_surface_roughness | units | String | Meters |
| variable | Surface_roughness_5th_percentile | float | ||
| attribute | Surface_roughness_5th_percentile | actual_range | float | 0.0, 0.48 |
| attribute | Surface_roughness_5th_percentile | colorBarMaximum | double | 100.0 |
| attribute | Surface_roughness_5th_percentile | colorBarMinimum | double | 0.0 |
| attribute | Surface_roughness_5th_percentile | comment | String | 5th percentile height of all surface roughness measurements in 10km segment |
| attribute | Surface_roughness_5th_percentile | ioos_category | String | Surface Waves |
| attribute | Surface_roughness_5th_percentile | long_name | String | Surface Roughness 5th Percentile |
| attribute | Surface_roughness_5th_percentile | units | String | Meters |
| variable | Surface_roughness_25th_percentile | float | ||
| attribute | Surface_roughness_25th_percentile | actual_range | float | 0.01, 0.63 |
| attribute | Surface_roughness_25th_percentile | colorBarMaximum | double | 100.0 |
| attribute | Surface_roughness_25th_percentile | colorBarMinimum | double | 0.0 |
| attribute | Surface_roughness_25th_percentile | comment | String | 25th percentile height of all surface roughness measurements in 10km segment |
| attribute | Surface_roughness_25th_percentile | ioos_category | String | Surface Waves |
| attribute | Surface_roughness_25th_percentile | long_name | String | Surface Roughness 25th Percentile |
| attribute | Surface_roughness_25th_percentile | units | String | Meters |
| variable | Surface_roughness_75th_percentile | float | ||
| attribute | Surface_roughness_75th_percentile | actual_range | float | 0.03, 0.91 |
| attribute | Surface_roughness_75th_percentile | colorBarMaximum | double | 100.0 |
| attribute | Surface_roughness_75th_percentile | colorBarMinimum | double | 0.0 |
| attribute | Surface_roughness_75th_percentile | comment | String | 75th percentile height of all surface roughness measurements in 10km segment |
| attribute | Surface_roughness_75th_percentile | ioos_category | String | Surface Waves |
| attribute | Surface_roughness_75th_percentile | long_name | String | Surface Roughness 75th Percentile |
| attribute | Surface_roughness_75th_percentile | units | String | Meters |
| variable | Surface_roughness_95th_percentile | float | ||
| attribute | Surface_roughness_95th_percentile | actual_range | float | 0.03, 1.17 |
| attribute | Surface_roughness_95th_percentile | colorBarMaximum | double | 100.0 |
| attribute | Surface_roughness_95th_percentile | colorBarMinimum | double | 0.0 |
| attribute | Surface_roughness_95th_percentile | comment | String | 95th percentile height of all surface roughness measurements in 10km segment |
| attribute | Surface_roughness_95th_percentile | ioos_category | String | Surface Waves |
| attribute | Surface_roughness_95th_percentile | long_name | String | Surface Roughness 95th Percentile |
| attribute | Surface_roughness_95th_percentile | units | String | Meters |
| variable | Surface_roughness_99th_percentile | float | ||
| attribute | Surface_roughness_99th_percentile | actual_range | float | 0.03, 1.75 |
| attribute | Surface_roughness_99th_percentile | colorBarMaximum | double | 100.0 |
| attribute | Surface_roughness_99th_percentile | colorBarMinimum | double | 0.0 |
| attribute | Surface_roughness_99th_percentile | comment | String | 99th percentile height of all surface roughness measurements in 10km segment |
| attribute | Surface_roughness_99th_percentile | ioos_category | String | Surface Waves |
| attribute | Surface_roughness_99th_percentile | long_name | String | Surface Roughness 99th Percentile |
| attribute | Surface_roughness_99th_percentile | units | String | Meters |
The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.