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

Baseline-F, cycle 194: 25-Aug-2026 to 23-Sep-2026 · 263 GDR-A files · data covers 18.1 of 30 days Partial cycle processed 11-Oct-2026 01:13 UTC

Sea Ice Concentration: Maps

North Polar (>60N) Single map
Map of Sea Ice Concentration. North Polar (>60N), Baseline-F, cycle 194
South Polar (<60S) Single map
Map of Sea Ice Concentration. South Polar (<60S), Baseline-F, cycle 194

Sea Ice Concentration: Cycle 194 Statistics

Area Records Valid Mean (%) Median (%) Std Dev (%) RMS (%) Min (%) Max (%)
Global 1,650,529 539,017 (32.7%) 27.26 0.00 38.47 47.15 0.00 100.00
North Polar (>60N) 283,050 214,888 (75.9%) 30.35 0.00 36.05 47.13 0.00 100.00
South Polar (<60S) 278,616 164,979 (59.2%) 45.90 50.00 45.05 64.32 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