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