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

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