CryoSat Performance Monitoring - UCL

Sea Ice Concentration Monitoring

Source: L2 GDR-A (all acquisition modes) · Variable: sea_ice_concentration_01

Sea ice concentration (sea ice area fraction) at 1 Hz. Baseline-E: derived from NSIDC SSM/I data. Baseline-F: derived from NSIDC-0081 (before July 2025) or OSI-408-a data. Unused (fill value) in LRM mode.

Area
All areas Global North Polar (>60N) South Polar (<60S)

Baseline-F, cycle 192: 26-Jun-2026 to 25-Jul-2026 · 319 GDR-A files · data covers 22.0 of 30 days Partial cycle processed 04-Oct-2026 10:20 UTC

Sea Ice Concentration: Maps

Global Single map
Map of Sea Ice Concentration. Global, Baseline-F, cycle 192
North Polar (>60N) Single map
Map of Sea Ice Concentration. North Polar (>60N), Baseline-F, cycle 192
South Polar (<60S) Single map
Map of Sea Ice Concentration. South Polar (<60S), Baseline-F, cycle 192

Sea Ice Concentration: Cycle 192 Statistics

Area Records Valid Mean (%) Median (%) Std Dev (%) RMS (%) Min (%) Max (%)
Global 2,006,833 660,588 (32.9%) 31.06 0.00 40.76 51.24 0.00 100.00
North Polar (>60N) 344,339 270,456 (78.5%) 42.16 51.00 40.41 58.40 0.00 100.00
South Polar (<60S) 339,196 198,194 (58.4%) 44.17 22.00 45.29 63.26 0.00 100.00

Statistics use every 1 Hz measurement of the cycle within each area. Std Dev is the population standard deviation, RMS the root mean square.

Sea Ice Concentration: Trends

Baselines:
Baseline-F statistics (CSV)

Click a point to show that cycle.

Sea Ice Concentration: All Cycles from Baseline-F

Cycle Timespan Coverage (days) GlobalNorth Polar (>60N)South Polar (<60S)
194 25-Aug-2026 to 23-Sep-2026 18.1 partial Global map, cycle 194 North Polar (>60N) map, cycle 194 South Polar (<60S) map, cycle 194
193 26-Jul-2026 to 24-Aug-2026 30.0 Global map, cycle 193 North Polar (>60N) map, cycle 193 South Polar (<60S) map, cycle 193
192 26-Jun-2026 to 25-Jul-2026 22.0 partial Global map, cycle 192 North Polar (>60N) map, cycle 192 South Polar (<60S) map, cycle 192