Sea Ice

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The ESA CCI Sea Ice project will combine and extend ongoing research to develop improved and validated timeseries of ice concentration and ice thickness for use in climate research. Since sea ice is a sensitive climate indicator with large seasonal and regional variability, the climate research community require long-term and regular observations of the key ice parameters in both Arctic and Antarctic. The project includes representatives from the scientific user community and climate research programmes to validate the ice concentration and ice thickness retrievals provided by the EO science team.


Sea Ice products & equivalent CMIP5/Obs4MIPs Parameters

The table below shows the Sea Ice outputs that have equivalent CMIP5 parameters and hence are suitable for submission to Obs4MIPs (Observations for Model Intercomparisons), an activity to make observational products more accessible for climate model intercomparisons.

CCI
Product
CMIP5 Table CMIP5 Matching Parameter : CMIP5 Name CMIP5 Priority
Sea Ice Concentration OImon Sea Ice Area Fraction : sic -
Sea Ice Thickness OImon Sea Ice Thickness : sit 1
Sea Ice Drift day X/Y Component of Sea Ice Velocity : usi/vsi 1

Parameter characteristics & GCOS/CMC Requirements

Seaice-table.png


Split at 3km is arbitrary
Types of errors
Single sensor uncertainty estimates for every observation (SSEOB)
Single sensor accuracy estimates for every observation (SSAOB)
Single sensor uncertainty estimates for TCDR (SSECDR)
Single sensor accuracy estimates for TCDR (SSACDR)
Error covariance matrix for TCDR (ERRCOV)
L3 merged product accuracy (ERRMERG)