Dataset: Antarctic Ice Drift, L4 OSISAF, 62km daily (METNO-GLO-SEAICE_DRIFT-SOUTH-L4-NRT-OBS)#

Dataset identifier: METNO-GLO-SEAICE_DRIFT-SOUTH-L4-NRT-OBS
Data store: cmems

How to open this dataset in AVL JupyterLab  

cmems_store = new_data_store('cmems')
ds = cmems_store.open_data('METNO-GLO-SEAICE_DRIFT-SOUTH-L4-NRT-OBS')

Basic information#

Parameter Value
Bounding box longitude (°) -3906.25 to 3906.25
Bounding box latitude (°) -3906.25 to 4281.25
Time range 2018-01-01 to 2023-04-14
Time period 1D

Click here for full dataset metadata.

Variable list#

Click on a variable name to jump to the variable’s full metadata.

Variable Long name Units
Polar_Stereographic_Grid [none] [none]
dX component of the displacement along the x axis of the grid km
dY component of the displacement along the y axis of the grid km
dt0 delta time for start of displacement [none]
dt1 delta time for end of displacement [none]
lat1 latitude at end of displacement degrees_north
lon1 longitude at end of displacement degrees_east
status_flag rejection and quality level flag [none]
uncert_dX_and_dY uncertainty (1 standard deviation) of dX and dY components of the drift vector km

Full variable metadata#

Polar_Stereographic_Grid#

Field Value
grid_mapping_name polar_stereographic
straight_vertical_longitude_from_pole 0.0
latitude_of_projection_origin -90.0
standard_parallel -70.0
false_easting 0.0
false_northing 0.0
semi_major_axis 6378273.0
semi_minor_axis 6356889.5
proj4_string +proj=stere +a=6378273 +b=6356889.44891 +lat_0=-90 +lat_ts=-70 +lon_0=0

dX#

Field Value
long_name component of the displacement along the x axis of the grid
standard_name sea_ice_x_displacement
units km
grid_mapping Polar_Stereographic_Grid
ancillary_variables uncert_dX_and_dY status_flag

dY#

Field Value
long_name component of the displacement along the y axis of the grid
standard_name sea_ice_y_displacement
units km
grid_mapping Polar_Stereographic_Grid
ancillary_variables uncert_dX_and_dY status_flag

dt0#

Field Value
long_name delta time for start of displacement
valid_min -43200
valid_max 43200
grid_mapping Polar_Stereographic_Grid

dt1#

Field Value
long_name delta time for end of displacement
valid_min -43200
valid_max 43200
grid_mapping Polar_Stereographic_Grid

lat1#

Field Value
long_name latitude at end of displacement
units degrees_north
grid_mapping Polar_Stereographic_Grid

lon1#

Field Value
long_name longitude at end of displacement
units degrees_east
grid_mapping Polar_Stereographic_Grid

status_flag#

Field Value
long_name rejection and quality level flag
standard_name sea_ice_x_displacement status_flag
valid_min 0
valid_max 30
grid_mapping Polar_Stereographic_Grid
flag_values 0, 1, 2, 3, 4, 10, 11, 12, 13, 20, 21, 22, 30
flag_meanings missing_input_data over_land no_ice close_to_coast_or_edge summer_period processing_failed too_low_correlation not_enough_neighbours filtered_by_neighbours smaller_pattern corrected_by_neighbours interpolated nominal_quality
flag_descriptions 0 -> missing satellite image data 1 -> grid point is over land 2 -> grid point is not over sufficient ice 3 -> grid point is too close to coast or edge 4 -> unreliable vector was removed because in summer period 10 -> optimization of the correlation (CMCC) failed 11 -> vector removed because too low cross-correlation 12 -> vector removed because not enough neighbouring vectors 13 -> vector removed because motion is not consistent with neighbours 20 -> vector processed using a smaller matching window 21 -> vector corrected using the neighbouring vectors 22 -> vector interpolated from the neighbours (multi-sensor product) 30 -> vector was retrieved with nominal CMCC algorithm

uncert_dX_and_dY#

Field Value
long_name uncertainty (1 standard deviation) of dX and dY components of the drift vector
standard_name sea_ice_x_displacement standard_error
units km
grid_mapping Polar_Stereographic_Grid

Full dataset metadata#

Field Value
title Antarctic Ice Drift, L4 OSISAF, 62km daily (METNO-GLO-SEAICE_DRIFT-SOUTH-L4-NRT-OBS)
product_id OSI-405
product_name osi_saf_lr_ice_drift
product_status operational
abstract Gridded ice displacement fields obtained from satellite image processing. It is a low resolution product (62.5km resolution). The time span of the ice displacement is approximately 48 hours. This dataset is intended both for process studies and data assimilation. Daily products are freely available from the OSI SAF distribution chain.
topiccategory Oceans ClimatologyMeteorologyAtmosphere
keywords Sea Ice Motion,Sea Ice,Oceanography,Meteorology,Climate,Remote Sensing
gcmd_keywords Cryosphere > Sea Ice > Sea Ice Motion Oceans > Sea Ice > Sea Ice Motion Geographic Region > Southern Hemisphere Vertical Location > Sea Surface EUMETSAT/OSISAF > Satellite Application Facility on Ocean and Sea Ice, European Organisation for the Exploitation of Meteorological Satellites
northernmost_latitude -40.1782
southernmost_latitude -90.0
easternmost_longitude 180.0
westernmost_longitude -180.0
activity_type Space borne instrument
area Southern Hemisphere
instrument_type Multi-sensor analysis
platform_name Multi-sensor analysis
start_date 2023-04-12 12:00:00
stop_date 2023-04-14 12:00:00
project_name EUMETSAT OSI SAF
institution EUMETSAT OSI SAF
PI_name Thomas Lavergne
contact osisaf-manager@met.no
distribution_statement Free
copyright_statement Copyright 2023 EUMETSAT
references Product User Manual for OSI-405-c, Lavergne, v1.8, 2016 Validation Report for OSI-405-c, Lavergne, v5, 2016 Algorithm Theoretical Basis Document for OSI-405-c, Lavergne, v1.3, 2016 http://osisaf.met.no http://osi-saf.org
history 2023-04-15 creation
product_version 2.0
software_version 5.1
netcdf_version 3.6.3
Conventions CF-1.4