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 25km grid spacing, version 2.1
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 25km grid spacing, version 2.1#
Dataset identifier: esacci.SEAICE.day.L4.SICONC.multi-sensor.multi-platform.AMSR_25kmEASE2.2-1.NH Data store: cciodp
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%).
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
ESA Sea Ice Climate Change Initiative (Sea_Ice_cci): Sea Ice Concentration Climate Data Record from the AMSR-E and AMSR-2 instruments at 25km 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)
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 medium resolution (19 GHz and 37 GHz) imaging channels, and has been gridded at 25km grid spacing. This version of the product is v2.1, which is an extension of the v2.0 Sea_Ice_cci data 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 (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 50 km grid spacing is also available.
