Dataset: Antarctic Sea Ice Drift, L4 SAR, 10km daily#

Dataset identifier: cmems_sat-si_glo_drift_nrt_south_d
Data store: cmems

How to open this dataset in AVL JupyterLab  ⧉

cmems_store = new_data_store('cmems')
ds = cmems_store.open_data('cmems_sat-si_glo_drift_nrt_south_d')

Basic information#

Parameter	Value
Bounding box longitude (°)	-4510 to 4490
Bounding box latitude (°)	-4490 to 4510
Time range	2018-01-02 to 2023-04-15

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]
dXY_count	number of samples per value	count
dX_mean	mean component of the displacement along the x axis of the grid	km
dX_std	sea_ice_x_displacement_standard_deviation	km
dY_mean	mean component of the displacement along the y axis of the grid	km
dY_std	sea_ice_y_displacement_standard_deviation	km
divergence	flow divergence	1/s
lat	latitude coordinate	degrees_north
lon	longitude coordinate	degrees_east
qos_bnds_from_time	validation period start time	[none]
qos_bnds_to_time	validation period end time	[none]
qos_mean_dX	mean of difference against GPS bouys X axis	meter
qos_mean_dY	mean of difference against GPS bouys Y axis	meter
qos_sample_count	validation statistics sample count	count
qos_stddev_dX	standard deviation of difference against GPS bouys X axis	meter
qos_stddev_dY	standard deviation of difference against GPS bouys Y axis	meter
shear	flow shear	1/s
status_flag	quality control indicator	[none]
time_first	time of earliest observed sample	[none]
time_last	time of latest observed sample	[none]
time_period_end	sample period end time	[none]
time_period_start	sample period start time	[none]
vorticity	flow vorticity	1/s

Full variable metadata#

Polar_Stereographic_Grid#

Field	Value
grid_mapping_name	polar_stereographic
straight_vertical_longitude_from_pole	45.0
latitude_of_projection_origin	-90.0
standard_parallel	-70.0
false_easting	0.0
false_northing	0.0
earth_shape	spherical
proj4_string	+proj=stere +R=6370997 +lat_0=-90 +lat_ts=-70 +lon_0=45

dXY_count#

Field	Value
long_name	number of samples per value
grid_mapping	Polar_Stereographic_Grid
units	count

dX_mean#

Field	Value
standard_name	sea_ice_x_displacement
long_name	mean component of the displacement along the x axis of the grid
units	km
grid_mapping	Polar_Stereographic_Grid
cell_methods	area: mean
valid_min	-250.0
valid_max	250.0

dX_std#

Field	Value
long_name	sea_ice_x_displacement_standard_deviation
units	km
grid_mapping	Polar_Stereographic_Grid
cell_methods	area: standard_deviation

dY_mean#

Field	Value
standard_name	sea_ice_y_displacement
long_name	mean component of the displacement along the y axis of the grid
units	km
grid_mapping	Polar_Stereographic_Grid
cell_methods	area: mean
valid_min	-250.0
valid_max	250.0

dY_std#

Field	Value
long_name	sea_ice_y_displacement_standard_deviation
units	km
grid_mapping	Polar_Stereographic_Grid
cell_methods	area: standard_deviation

divergence#

Field	Value
long_name	flow divergence
grid_mapping	Polar_Stereographic_Grid
units	1/s
valid_min	-1.0
valid_max	1.0

lat#

Field	Value
long_name	latitude coordinate
standard_name	latitude
units	degrees_north
valid_min	-90.0
valid_max	0.0

lon#

Field	Value
long_name	longitude coordinate
standard_name	longitude
units	degrees_east
valid_min	-180.0
valid_max	180.0

qos_bnds_from_time#

Field	Value
long_name	validation period start time

qos_bnds_to_time#

Field	Value
long_name	validation period end time

qos_mean_dX#

Field	Value
long_name	mean of difference against GPS bouys X axis
units	meter

qos_mean_dY#

Field	Value
long_name	mean of difference against GPS bouys Y axis
units	meter

qos_sample_count#

Field	Value
long_name	validation statistics sample count
units	count

qos_stddev_dX#

Field	Value
long_name	standard deviation of difference against GPS bouys X axis
units	meter

qos_stddev_dY#

Field	Value
long_name	standard deviation of difference against GPS bouys Y axis
units	meter

shear#

Field	Value
long_name	flow shear
grid_mapping	Polar_Stereographic_Grid
units	1/s
valid_min	-1.0
valid_max	1.0

status_flag#

Field	Value
long_name	quality control indicator
flag_values	0, 1, 2, 3
flag_meanings	nominal_quality low_quality rejected_by_filter no_input_data

time_first#

Field	Value
long_name	time of earliest observed sample
grid_mapping	Polar_Stereographic_Grid

time_last#

Field	Value
long_name	time of latest observed sample
grid_mapping	Polar_Stereographic_Grid

time_period_end#

Field	Value
long_name	sample period end time

time_period_start#

Field	Value
long_name	sample period start time

vorticity#

Field	Value
long_name	flow vorticity
grid_mapping	Polar_Stereographic_Grid
units	1/s
valid_min	-1.0
valid_max	1.0

Full dataset metadata#

Field	Value
Conventions	CF-1.6
title	Antarctic Sea Ice Drift, L4 SAR, 10km daily
product_name	SAR highres ice drift composite
product_status	preoperational
abstract	Mean/standard deviation and divergence/vorticity/shear of gridded normalised ice displacement fields obtained by near real time MCC processing of Synthetic Aperture Radar scenes resampled to 300m resolution. The nominal temporal span between processed swaths is 24hours the nominal product grid resolution is 10km.
topiccategory	Oceans ClimatologyMeteorologyAtmosphere
keywords	Sea Ice Motion,Sea Ice,Oceanography,Meteorology,Climate,Remote Sensing
activity_type	space borne instrument
area	southern hemisphere
start_date	2023-04-14 12:00:00 UTC
stop_date	2023-04-15 12:00:00 UTC
PI_name	Roberto Saldo
distribution_statement	free
references	www.seaice.dk
history	2023-04-16 00:01:10 UTC created
netcdf_version_id	4.6.0
product_version	2.0
software_version	v20200826
institution	DTU Space - Technical University of Denmark
contact	rs@space.dtu.dk