Dataset: Daily Sea Ice Type Analysis from OSI SAF EUMETSAT#

Dataset identifier: osisaf_obs-si_glo_phy-sitype_nrt_nh-P1D
Data store: cmems

How to open this dataset in AVL JupyterLab  

cmems_store = new_data_store('cmems')
ds = cmems_store.open_data('osisaf_obs-si_glo_phy-sitype_nrt_nh-P1D')

Basic information#

Parameter Value
Bounding box longitude (°) -3845 to 3745
Bounding box latitude (°) -5345 to 5845
Time range 2021-06-01 to 2023-04-14

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]
ice_type sea ice type [none]
orbit_num_amsr number of orbits of amsr used in processing [none]
orbit_num_ascat number of orbits of ascat used in processing [none]
orbit_num_ssmis number of orbits of ssmi used in processing [none]
param_used parameters used in processing type [none]
status_flag status flag for sea ice type retrieval [none]
uncertainty uncertainty in ice type calculation [none]

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
semi_major_axis 6378273.0
semi_minor_axis 6356889.5
proj4_string +proj=stere +a=6378273.0 +b=6356889.44891 +lat_0=90.0 +lat_ts=70.0 +lon_0=-45.0

ice_type#

Field Value
long_name sea ice type
standard_name sea_ice_classification
valid_min 1
valid_max 4
grid_mapping Polar_Stereographic_Grid
flag_values 1, 2, 3, 4
flag_meanings open_water first_year_ice multi_year_ice ambiguous
flag_descriptions 1 -> no ice or very open ice 2 -> relatively young ice 3 -> ice that survived a summer melt 4 -> ambiguous ice type

orbit_num_amsr#

Field Value
valid_min 0
valid_max 127
grid_mapping Polar_Stereographic_Grid
long_name number of orbits of amsr used in processing

orbit_num_ascat#

Field Value
long_name number of orbits of ascat used in processing
valid_min 0
valid_max 127
grid_mapping Polar_Stereographic_Grid

orbit_num_ssmis#

Field Value
long_name number of orbits of ssmi used in processing
valid_min 0
valid_max 127
grid_mapping Polar_Stereographic_Grid

param_used#

Field Value
long_name parameters used in processing type
valid_min 0
valid_max 64
grid_mapping Polar_Stereographic_Grid
flag_masks 1, 2, 4, 8, 16, 32
flag_meanings pr37_used prn90_used gr3719v_used pr19_gr3719v_used anisFMB_used bscatt_used
flag_descriptions 1 -> PR37 data used 2 -> PRn90 data used 4 -> GR3719V data used 8 -> PR19-GR3719V data used 16 -> anisFMB data used 32 -> BScatt data used

status_flag#

Field Value
long_name status flag for sea ice type retrieval
standard_name status_flag
valid_min 0
valid_max 16384
grid_mapping Polar_Stereographic_Grid
flag_masks 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192
flag_meanings land lake not_in_use not_in_use high_t2m not_in_use not_in_use max_ice_climo areal_ice_type_masked seasonal_ice_type_masked backtrack_corrected threshold_corrected unclassified missing
flag_descriptions 1 -> Position is over land 2 -> Position is lake 4 -> Flag value is not in use 8 -> Flag value is not in use 16 -> Sea ice is set to 'no ice' since the 2m air temperature is high at this position 32 -> Flag value is not in use 64 -> Flag value is not in use 128 -> Sea ice is set to 'no ice' since position is outside maximum sea ice climatology 256 -> Sea ice type is set to 'first-year ice' by the geographical ice type mask 512 -> Sea ice type is set to 'ambiguous' due to season 1024 -> Sea ice type is set to 'first-year ice' by the ice drift mask 2048 -> Sea ice type is set to 'first-year ice' by the statistical filter 4096 -> Unclassified pixel 8192 -> Missing sea ice classification due to missing data

uncertainty#

Field Value
valid_max 1.0
grid_mapping Polar_Stereographic_Grid
long_name uncertainty in ice type calculation
valid_min 0.0

Full dataset metadata#

Field Value
title Daily Sea Ice Type Analysis from OSI SAF EUMETSAT
product_id OSI-403-d
product_name osi_saf_ice_type
product_status operational
abstract The daily analysis of sea ice types is obtained from operation satellite images of the polar regions. It is based on atmospherically corrected signal and a Bayesian merging approch to estimate sea ice class probabilities. This product is freely available from the EUMETSAT Ocean and Sea Ice Satellite Application Facility (OSI SAF).
topiccategory Oceans ClimatologyMeteorologyAtmosphere
keywords Sea Ice Type,Sea Ice,Oceanography,Meteorology,Climate,Remote Sensing
gcmd_keywords Cryosphere > Sea Ice > Ice Types\\nOceans > Sea Ice > Ice Types Vertical Location > Sea Surface EUMETSAT/OSISAF > Satellite Application Facility on Ocean and Sea Ice, European Organisation for the Exploitation of Meteorological Satellites
northernmost_latitude 89.93667676430204
southernmost_latitude 31.078187897247652
easternmost_longitude 179.98669676741142
westernmost_longitude -179.93870369835892
activity_type Space borne instrument
area Northern Hemisphere
instrument_type Multi-sensor analysis
platform_name Multi-sensor analysis
start_date 2023-04-14 00:00:00
stop_date 2023-04-15 00:00:00
project_name EUMETSAT OSI SAF
institution EUMETSAT OSI SAF
PI_name Signe Aaboe
contact osisaf-manager@met.no
license All intellectual property rights of the Ocean and Sea Ice SAF products belong to EUMETSAT. The use of these products is granted to every user, free of charge. If users wish to use these products, EUMETSAT's copyright credit must be shown by displaying the words 'Copyright EUMETSAT' under each of the products shown. EUMETSAT offers no warranty and accepts no liability in respect of the Ocean and Sea Ice SAF products. EUMETSAT neither commits to nor guarantees the continuity, availability, or quality or suitability for any purpose of, the Ocean and Sea Ice SAF products.
copyright_statement Copyright 2023 EUMETSAT
references OSI SAF Product User's Manual for the Global Sea Ice Edge and Type, Aaboe, S., v3.2, 2021 http://www.osi-saf.org
history 2023-04-15 creation
product_version 5.0
software_version 5.3
netcdf_version 4.4.1.1
Conventions CF-1.7