Dataset: High resolution sea ice concentration#

Dataset identifier: cmems_obs-si_arc_phy-siconc_nrt_L4-auto_P1D
Data store: cmems

How to open this dataset in AVL JupyterLab  ⧉

cmems_store = new_data_store('cmems')
ds = cmems_store.open_data('cmems_obs-si_arc_phy-siconc_nrt_L4-auto_P1D')

Basic information#

Parameter	Value
Bounding box longitude (°)	-872016 to 1927984
Bounding box latitude (°)	-2442483 to 57517
Time range	2020-12-01 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
conc	Sea ice concentration merged from SAR and AMSR2 concentration products	%
confidence	probability for correct classification	%
status_flag	status flag for sea ice concentration retrieval	[none]

Full variable metadata#

conc#

Field	Value
long_name	Sea ice concentration merged from SAR and AMSR2 concentration products
comment	This field contains a multisensor sea ice product based on sea ice concentration derrived from Sentinel-1 SAR and AMSR2 data. Valid values are Concentration=[0:100], Land=-127, NoData=-1
units	%
standard_name	sea_ice_area_fraction
grid_mapping	crs
fill_value	-127

confidence#

Field	Value
long_name	probability for correct classification
grid_mapping	crs
units	%
fill_value	-127

crs#

Field	Value
grid_mapping_name	polar_stereographic
straight_vertical_longitude_from_pole	0.0
latitude_of_projection_origin	90.0
standard_parallel	90.0
false_easting	0.0
false_northing	0.0
semi_major_axis	6371000
semi_minor_axis	6371000
proj4_string	+proj=stere +lat_0=90.0 +lon_0=0.0 +lat_ts=90.0 +R=6.371e+06 +units=m +no_defs
DODS	strlen: 0

status_flag#

Field	Value
long_name	status flag for sea ice concentration retrieval
standard_name	sea_ice_classification status_flag
grid_mapping	crs
fill_value	-127
flag_values	1, 2, 4, 8, 12
flag_meanings	land costal_zone SAR_data AMSR2_data SAR_and_AMSR2_data
flag_descriptions	1 -> land 2 -> costal_zone 4 -> SAR data used 8 -> AMSR2 data used 12 -> SAR + AMSR2 data used

Full dataset metadata#

Field	Value
title	High resolution sea ice concentration
product_status	operational
abstract	The daily analysis of sea ice concentration is based on satellite data from AMSR2 and Sentinel-1, which is combined in an optimal interpolation merging. Sea ice concnetration from passive microvave AMSR2 data are produced from the 89GHz channel giving a spatial resolution of 5x5km SAR data from the Sentinel-1 are first classified into ice/water at a 40x40m pixel resoluton before concentration is estimated from ice area within 1x1km The two concentrations products are then subsampled to the same 1x1km spatial resolution and merged in an optimal interpolation
activity_type	Space borne instrument
area	Eurarctic
instrument_type	Multi-sensor analysis
source	Sentinel-1 EW HH/HV-polarization, AMSR2 89GHz v,h
references	unknown
creation_date	2023-04-15T06:00:00Z
Conventions	CF-1.4
netcdf4_version_id	4.7.4
netcdf4_format	NETCDF4
start_date	2023-04-15T00:00:00Z
stop_date	2023-04-15T12:00:00Z
product_version	1.2
software_version	1.2
comment	This is an automatic generated product based on satellite data.
spatial_resolution_latitude	1000.0
spatial_resolution_longitude	1000.0
southernmost_latitude	62.558747715891265
northernmost_latitude	89.99564459928335
westernmost_longitude	-179.48149121943226
easternmost_longitude	179.5136452070517
institution	MET Norway
institution_reference	http://www.met.no
contact	froded@met.no