Dataset: ESA Climate Change Initiative Sea Ice: Northern Hemisphere Sea Ice Thickness Climate Data Record#

Dataset identifier: ESACCI-SEAICE-L3C-SITHICK-SIRAL_CRYOSAT2-NH25KMEASE2-2010-2017-fv2.0.zarr
Data store: ccizarr

How to open this dataset in AVL JupyterLab  

ccizarr_store = new_data_store('ccizarr')
ds = ccizarr_store.open_data('ESACCI-SEAICE-L3C-SITHICK-SIRAL_CRYOSAT2-NH25KMEASE2-2010-2017-fv2.0.zarr')

Basic information#

Parameter Value
Bounding box longitude (°) -5400.0 to 5400.0
Bounding box latitude (°) -5400.0 to 5400.0
Time range 2010-11-01 to 2017-04-30

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
Lambert_Azimuthal_Grid [none] [none]
freeboard elevation of retracked point above instantaneous sea surface height (with snow range corrections) m
freeboard_uncertainty freeboard uncertainty m
radar_freeboard elevation of retracked point above instantaneous sea surface height (no snow range corrections) m
radar_freeboard_uncertainty uncertainty of radar freeboard m
sea_ice_concentration sea ice contration percent
sea_ice_thickness thickness of the sea ice layer m
sea_ice_thickness_uncertainty uncertainty of the sea ice layer thickness m
status_flag status flag for the sea ice thickness retrieval [none]

Full variable metadata#

Lambert_Azimuthal_Grid#

Field Value
false_easting 0.0
false_northing 0.0
grid_mapping_name lambert_azimuthal_equal_area
inverse_flattening 298.257223563
latitude_of_projection_origin 90.0
longitude_of_projection_origin 0.0
proj4_string +proj=laea +lon_0=0 +datum=WGS84 +ellps=WGS84 +lat_0=90.0
semi_major_axis 6378137.0

freeboard#

Field Value
grid_mapping Lambert_Azimuthal_Grid
long_name elevation of retracked point above instantaneous sea surface height (with snow range corrections)
standard_name sea_ice_freeboard
units m

freeboard_uncertainty#

Field Value
grid_mapping Lambert_Azimuthal_Grid
long_name freeboard uncertainty
units m

radar_freeboard#

Field Value
grid_mapping Lambert_Azimuthal_Grid
long_name elevation of retracked point above instantaneous sea surface height (no snow range corrections)
units m

radar_freeboard_uncertainty#

Field Value
grid_mapping Lambert_Azimuthal_Grid
long_name uncertainty of radar freeboard
units m

sea_ice_concentration#

Field Value
comment Average grid cell sea ice concentration during days with altimetry data coverage (not monthly mean)
grid_mapping Lambert_Azimuthal_Grid
long_name sea ice contration
standard_name sea_ice_area_fraction
units percent
valid_max 100.0
valid_min 0.0

sea_ice_thickness#

Field Value
ancillary_variables sea_ice_thickness_uncertainty status_flag
grid_mapping Lambert_Azimuthal_Grid
long_name thickness of the sea ice layer
standard_name sea_ice_thickness
units m

sea_ice_thickness_uncertainty#

Field Value
grid_mapping Lambert_Azimuthal_Grid
long_name uncertainty of the sea ice layer thickness
units m

status_flag#

Field Value
comment Describes the status of the sea-ice thickness retrieval
flag_meaning 0: nominal sea ice thickness retrieval; 1: no input data; 2: outside sea ice concentration mask; 3: latitude above orbit inclination; 4: land, lake or land ice; 5: sea ice thickness retrieval failed;
flag_values 0, 1, 2, 3, 4, 5
grid_mapping Lambert_Azimuthal_Grid
long_name status flag for the sea ice thickness retrieval
standard_name sea_ice_thickness status_flag
unit 1
valid_max 5
valid_min 0

Full dataset metadata#

Field Value
cdm_data_type Grid
comment Northern hemisphere sea ice thickness coverage is limited to the winter month between October and April due to negative effect of surface melt on the retrieval of freeboard. Please consult the Product User Guide (PUG) for more information.
conventions CF-1.6
creator_email stefan.hendricks@awi.de, stephan.paul@awi.de, eero.rinne@fmi.fi
creator_name Stefan Hendricks, Stephan Paul (Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany); Eero Rine (Finnish Meteorological Institute, Helsinki, Finland)
creator_url http://www.awi.de
date_created 20180416T205845Z
doi 10.5285/ff79d140824f42dd92b204b4f1e9e7c2
geospatial_lat_max 89.8417
geospatial_lat_min 16.6239
geospatial_lon_max 179.8671
geospatial_lon_min -179.8671
geospatial_vertical_max 0.0
geospatial_vertical_min 0.0
history 20180416T205845Z (created)
id esacci-seaice-l3c-sit-SIRAL-cryosat2-nh25kmEASE2-20170401-fv2.0
institution Alfred-Wegener-Institut Helmholtz Zentrum für Polar und Meeresforschung
keywords Sea Ice, Ice Depth/Thickness, Radar Altimeters
keywords_vocabulary GCMD Science Keywords
license Creative Commons Attribution 4.0 International (CC BY 4.0)
naming_authority de.awi
platform CryoSat-2
processing_level Level-3 Collated (l3c)
product_version 2.0
project Climate Change Initiative - European Space Agency
references Algorithm Theoretical Baseline Document, Sea Ice Climate Change Initiative: Phase 2 (version 2.2)
sensor SIRAL
source Altimetry: cryosat2, Snow depth: Warren Climatology with 50% reduction for first-year sea ice, Mean Sea Surface: DTU15 global mean sea surface, Sea ice Concentration: OSI-SAF Global Sea Ice Concentration continuous reprocessing offline product (OSI-430), Sea ice type: ESA-SICCI multiyear ice area fraction from daily gridded NSIDC SSMI-SSMIS brightness temperatures version 4 using the NASA-Team algorithm
spatial_resolution 25 km
standard_name_vocabulary CF
summary Monthly gridded Northern Hemisphere Sea Ice Thickness Climate Data Record from Envisat and CryoSat-2 satellite radar altimetry for the period October 2002 - April 2017.
time_coverage_duration P1M
time_coverage_end 19700101T000001
time_coverage_resolution P1M
time_coverage_start 19700101T000001
title ESA Climate Change Initiative Sea Ice: Northern Hemisphere Sea Ice Thickness Climate Data Record
tracking_id 6a71bb60-e10b-4dca-a50c-c79a13bc3393