OPeNDAP Dataset Query Form

OPeNDAP Dataset Access Form

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Global Attributes:	Conventions: CF-1.6 title: Monthly average of daily gridded sea-ice motion from combined Buoy, AVHRR, SMMR, SSM/I, SSMIS and AMSR-E data and NCEP Winds (Arctic) and combined AVHRR, SMMR, SSM/I, and SSMIS (Antarctic) with 25 km grid resolution version v04 source: Tschudi, M., W. N. Meier, J. S. Steward, C. Fowler, and J. Maslanik. 1978 to present. Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors. Version 4.1. [indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://dx.doi.org/10.5067/INAWUWO7QH7B. [Date Accessed: 2024-10-21] history: Modified from source (see above) on Mon Oct 21 10:39:20 2024 by Stefan Kern, stefan.kern (at) uni-hamburg.de, Integrated Climate Data Center (ICDC), https://www.cen.uni-hamburg.de/en/icdc, University of Hamburg: provision of REAL u- and v-components of drift (West-to-East; South-to-North), adding velocity, computing monthly mean values and their standard deviation from daily values; a minimum of 10 days with valid data is required; all monthly means are computed from the respective daily variable, i.e. monthly mean velocity is the monthly mean of the daily velocity values cdm_data_type: EASE grid geographic_region: polar regions geospatial_lat_min: -90.0000 geospatial_lat_max: -37.1358 geospatial_lon_min: 0.00000 geospatial_lon_max: 359.642 time_coverage_start: 1978Y time_coverage_end: 2023Y time_coverage_duration: P45Y time_coverage_resolution: P1M StartYear: 1978 StartMonth: 11 EndYear: 2023 EndMonth: 12 Period: 1978-2023 Year: 2023 Hemisphere: south geospatial_lon_resolution: 25km geospatial_lat_resolution: 25km platform: NOAA-Pathfinder NIMBUS DMSP sensor: AVHRR SMMR SSM/I SSM/IS version: 4.1 citation: Monthly mean sea-ice motion estimates based on Tschudi, M., W. N. Meier, J. S. Steward, C. Fowler, and J. Maslanik. 1978 to present. Polar Pathfinder Daily 25 km EASE-Grid Sea Ice Motion Vectors. Version 4.1. [indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://dx.doi.org/10.5067/INAWUWO7QH7B. [Date Accessed: 2024-10-21], provided by Integrated Climate Data Center (ICDC), https://www.cen.uni-hamburg.de/icdc

Variables:	lat: Array of 32 bit Reals [y = 0..320][x = 0..320] y: x: standard_name: latitude long_name: latitude coordinate units: degrees_north
	lon: Array of 32 bit Reals [y = 0..320][x = 0..320] y: x: standard_name: longitude long_name: longitude coordinate units: degrees_east
	time: Array of 64 bit Reals [time = 0..541] time: standard_name: time units: days since 1978-01-01
	ux: Array of 32 bit Reals [time = 0..541][y = 0..320][x = 0..320] time: y: x: long_name: sea_ice_velocity_in_x-direction units: m/s missing_value: 999.0 _FillValue: 999.0 coordinates: lat lon
	vy: Array of 32 bit Reals [time = 0..541][y = 0..320][x = 0..320] time: y: x: long_name: sea_ice_velocity_in_y-direction units: m/s missing_value: 999.0 _FillValue: 999.0 coordinates: lat lon
	sdevux: Array of 32 bit Reals [time = 0..541][y = 0..320][x = 0..320] time: y: x: long_name: sea_ice_velocity_in_x-direction standard_deviation units: m/s missing_value: 999.0 _FillValue: 999.0 coordinates: lat lon
	sdevvy: Array of 32 bit Reals [time = 0..541][y = 0..320][x = 0..320] time: y: x: long_name: sea_ice_velocity_in_y-direction standard_deviation units: m/s missing_value: 999.0 _FillValue: 999.0 coordinates: lat lon
	u: Array of 32 bit Reals [time = 0..541][y = 0..320][x = 0..320] time: y: x: standard_name: eastward_sea_ice_velocity units: m/s missing_value: 999.0 _FillValue: 999.0 coordinates: lat lon
	v: Array of 32 bit Reals [time = 0..541][y = 0..320][x = 0..320] time: y: x: standard_name: northward_sea_ice_velocity units: m/s missing_value: 999.0 _FillValue: 999.0 coordinates: lat lon
	sdevu: Array of 32 bit Reals [time = 0..541][y = 0..320][x = 0..320] time: y: x: long_name: eastward_sea_ice_velocity standard_deviation units: m/s missing_value: 999.0 _FillValue: 999.0 coordinates: lat lon
	sdevv: Array of 32 bit Reals [time = 0..541][y = 0..320][x = 0..320] time: y: x: long_name: northward_sea_ice_velocity standard_deviation units: m/s missing_value: 999.0 _FillValue: 999.0 coordinates: lat lon
	velocity: Array of 32 bit Reals [time = 0..541][y = 0..320][x = 0..320] time: y: x: standard_name: sea_ice_speed units: m/s missing_value: 999.0 _FillValue: 999.0 coordinates: lat lon comment: This is the velocity computed from the u and v components pointing Eastward and Northward
	sdev_velocity: Array of 32 bit Reals [time = 0..541][y = 0..320][x = 0..320] time: y: x: long_name: sea_ice_speed standard_deviation units: m/s missing_value: 999.0 _FillValue: 999.0 coordinates: lat lon
	sigma: Array of 32 bit Reals [time = 0..541][y = 0..320][x = 0..320] time: y: x: long_name: mean sea_ice_velocity error_estimate units: m/s missing_value: 999.0 _FillValue: 999.0 coordinates: lat lon
	noofdays: Array of 16 bit Integers [time = 0..541][y = 0..320][x = 0..320] time: y: x: long_name: number_of_days units: 1 _FillValue: 999 comment: Number of days with valid ice motion estimates contributing to the monthly value coordinates: lat lon
	land: Array of 8 bit Bytes [time = 0..541][y = 0..320][x = 0..320] time: y: x: _Unsigned: false long_name: grid_cells_covered_with_land units: 1 _FillValue: 127 comment: Taken from SICCI-2 sea-ice concentration CDR coordinates: lat lon

For questions or comments about this dataset, contact the administrator of this server [Support] at: remon.sadikni@uni-hamburg.de

For questions or comments about the OPeNDAP service bundled with the TDS, email THREDDS support at: support-thredds@unidata.ucar.edu

DDS:

Dataset {
    Float32 lat[y = 321][x = 321];
    Float32 lon[y = 321][x = 321];
    Float64 time[time = 542];
    Float32 ux[time = 542][y = 321][x = 321];
    Float32 vy[time = 542][y = 321][x = 321];
    Float32 sdevux[time = 542][y = 321][x = 321];
    Float32 sdevvy[time = 542][y = 321][x = 321];
    Float32 u[time = 542][y = 321][x = 321];
    Float32 v[time = 542][y = 321][x = 321];
    Float32 sdevu[time = 542][y = 321][x = 321];
    Float32 sdevv[time = 542][y = 321][x = 321];
    Float32 velocity[time = 542][y = 321][x = 321];
    Float32 sdev_velocity[time = 542][y = 321][x = 321];
    Float32 sigma[time = 542][y = 321][x = 321];
    Int16 noofdays[time = 542][y = 321][x = 321];
    Byte land[time = 542][y = 321][x = 321];
} icedrift_sh;

OPeNDAP Dataset Access Form

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