Dataset: ESA Sea Ice Climate Change Initiative (Sea_Ice_cci): Sea Ice Concentration Climate Data Record from the AMSR-E and AMSR-2 instruments at 50km grid spacing, version 2.1#

Dataset identifier: esacci.SEAICE.day.L4.SICONC.multi-sensor.multi-platform.AMSR_50kmEASE2.2-1.SH
Data store: cciodp

How to open this dataset in AVL JupyterLab  

cciodp_store = new_data_store('cciodp')
ds = cciodp_store.open_data('esacci.SEAICE.day.L4.SICONC.multi-sensor.multi-platform.AMSR_50kmEASE2.2-1.SH')

Bounding box map#

Bounding box map
Map tiles and data from OpenStreetMap, under the ODbL.

Basic information#

Parameter Value
Bounding box longitude (°) -180.0 to 180.0
Bounding box latitude (°) -90.0 to 90.0
Time range 2002-05-31 to 2017-05-15
Time period 1D

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]
ice_conc fully filtered concentration of sea ice using atmospheric correction of brightness temperatures and open water filters %
raw_ice_conc_values sea ice concentration estimates as retrieved by the algorithm, and that were edited away by the various filters %
total_standard_error total uncertainty (one standard deviation) of concentration of sea ice %
smearing_standard_error smearing uncertainty (one standard deviation) of concentration of sea ice %
algorithm_standard_error algorithm uncertainty (one standard deviation) of concentration of sea ice %
status_flag status flag bit array for sea ice concentration retrievals [none]

Full variable metadata#

Lambert_Azimuthal_Grid#

Field Value
grid_mapping_name lambert_azimuthal_equal_area
longitude_of_projection_origin 0.0
latitude_of_projection_origin -90.0
false_easting 0.0
false_northing 0.0
semi_major_axis 6378137.0
inverse_flattening 298.257223563
proj4_string +proj=laea +lon_0=0 +datum=WGS84 +ellps=WGS84 +lat_0=-90.0
orig_data_type int32
fill_value 9223372036854775807
size 1
shape 1
chunk_sizes 1
file_chunk_sizes 1
data_type int64
dimensions
file_dimensions

ice_conc#

Field Value
long_name fully filtered concentration of sea ice using atmospheric correction of brightness temperatures and open water filters
standard_name sea_ice_area_fraction
units %
valid_min 0
valid_max 10000
grid_mapping Lambert_Azimuthal_Grid
coordinates time lat lon
ancillary_variables total_standard_error status_flag
scale_factor 0.01
comment this field is the primary sea ice concentration estimate for this climate data record
orig_data_type int32
fill_value -32767
size 239671872
shape 5137, 216, 216
chunk_sizes 1, 216, 216
file_chunk_sizes 1, 216, 216
data_type int32
dimensions time, yc, xc
file_dimensions time, yc, xc

raw_ice_conc_values#

Field Value
long_name sea ice concentration estimates as retrieved by the algorithm, and that were edited away by the various filters
coordinates time lat lon
scale_factor 0.01
comment this field can be used in combination with 'ice_conc' to access un-bounded normal distribution of sea ice concentration estimates corresponding to the uncertainty estimate in 'total_standard_error'. It does also feature some amount of un-physical data (below 0% and above 100%).
units %
grid_mapping Lambert_Azimuthal_Grid
orig_data_type int32
fill_value -32767
size 239671872
shape 5137, 216, 216
chunk_sizes 1, 216, 216
file_chunk_sizes 1, 216, 216
data_type int32
dimensions time, yc, xc
file_dimensions time, yc, xc

total_standard_error#

Field Value
coordinates time lat lon
scale_factor 0.01
units %
grid_mapping Lambert_Azimuthal_Grid
standard_name sea_ice_area_fraction standard_error
long_name total uncertainty (one standard deviation) of concentration of sea ice
orig_data_type int32
fill_value -32767
size 239671872
shape 5137, 216, 216
chunk_sizes 1, 216, 216
file_chunk_sizes 1, 216, 216
data_type int32
dimensions time, yc, xc
file_dimensions time, yc, xc

smearing_standard_error#

Field Value
scale_factor 0.01
comment this is one of the two components contributing to 'total_standard_error'
grid_mapping Lambert_Azimuthal_Grid
coordinates time lat lon
long_name smearing uncertainty (one standard deviation) of concentration of sea ice
units %
orig_data_type int32
fill_value -32767
size 239671872
shape 5137, 216, 216
chunk_sizes 1, 216, 216
file_chunk_sizes 1, 216, 216
data_type int32
dimensions time, yc, xc
file_dimensions time, yc, xc

algorithm_standard_error#

Field Value
grid_mapping Lambert_Azimuthal_Grid
coordinates time lat lon
scale_factor 0.01
comment this is one of the two components contributing to 'total_standard_error'
long_name algorithm uncertainty (one standard deviation) of concentration of sea ice
units %
orig_data_type int32
fill_value -32767
size 239671872
shape 5137, 216, 216
chunk_sizes 1, 216, 216
file_chunk_sizes 1, 216, 216
data_type int32
dimensions time, yc, xc
file_dimensions time, yc, xc

status_flag#

Field Value
long_name status flag bit array for sea ice concentration retrievals
standard_name sea_ice_area_fraction status_flag
valid_min 0
valid_max 32767
grid_mapping Lambert_Azimuthal_Grid
coordinates time lat lon
flag_masks 1, 2, 4, 8, 16, 32, 64, 128
flag_meanings land lake open_water_filtered land_spill_over high_t2m spatial_interp temporal_interp max_ice_climo
flag_descriptions all bits to 0 (flag 0): Nominal retrieval by the SIC algorithm bit 1 (flag 1): Position is over land bit 2 (flag 2): Position is lake bit 3 (flag 4): SIC is set to zero by the open water filter bit 4 (flag 8): SIC value is changed for correcting land spill-over effects bit 5 (flag 16): Handle with caution, the 2m air temperature is high at this position, and this might be false ice bit 6 (flag 32): Value is the result of spatial interpolation bit 7 (flag 64): Value is the result of temporal interpolation bit 8 (flag 128): SIC is set to zero since position is outside maximum sea ice climatology.
comment Flag values found in the map might be combinations of those listed above. For example flag value 80 (= 2^4 + 2^6 = 16 + 64) indicates high_t2m AND temporal_interp
orig_data_type int16
fill_value -32768
size 239671872
shape 5137, 216, 216
chunk_sizes 1, 216, 216
file_chunk_sizes 1, 216, 216
data_type int16
dimensions time, yc, xc
file_dimensions time, yc, xc

Full dataset metadata#

Field Value
title ESA Sea Ice Climate Change Initiative (Sea_Ice_cci): Sea Ice Concentration Climate Data Record from the AMSR-E and AMSR-2 instruments at 50km grid spacing, version 2.1
source FCDR of AMSR-E Brightness Temperatures V3 (doi: 10.5067/AMSR-E/AE_L2A.003), AMSR2 L1R data from JAXA,ERA-Interim fields from ECMWF (doi: 10.1002/qj.828)
project Climate Change Initiative - European Space Agency
references Product User Guide DX.X Issue X.X,Algorithm Theoretical Basis Document v3 DX.X Issue X.X,http://www.esa-seaice-cci.org,http://www.esa-cci.org
history 2017-02-14T15:14:03Z creation
product_version 2-1
ecv SEAICE
institute Norwegian Meteorological Institute
processing_level L4
product_string AMSR_50kmEASE2
data_type SICONC
abstract The dataset provides a Climate Data Record of Sea Ice Concentration (SIC) for the polar regions, derived from medium resolution passive microwave satellite data from the Advanced Microwave Scanning Radiometer series (AMSR-E and AMSR-2). It is processed with an algorithm using coarse resolution (6 GHz and 37 GHz) imaging channels, and has been gridded at 50km grid spacing. This version of the product is v2.1, which is an extension of the version 2.0 Sea_Ice_cci dataset and has identical data until 2015-12-25. This product was generated in the context of the ESA Climate Change Initiative Programme (ESA CCI) by the Sea_Ice_CCI project. The EUMETSAT OSI SAF contributed with access and re-use of part of its processing software and facilities. A SIC CDR at 25km grid spacing is also available.
publication_date 2017-10-06T11:09:54
uuid 5f75fcb0c58740d99b07953797bc041e
catalog_url https://catalogue.ceda.ac.uk/uuid/5f75fcb0c58740d99b07953797bc041e
sensor_id multi-sensor
platform_id multi-platform
cci_project SEAICE