CryoSat Performance Monitoring - UCL

SARin Ambiguity Warning Monitoring

Source: L2i (LRM, SAR, SARin) · Variable: flag_sarin_ambiguity_warning_20_ku

Flag indicating whether the SARin height may be affected by positional ambiguity due to phase wrapping of the interferometric phase. Only used in SARin mode (0 in LRM and SAR modes, which are excluded).

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

Only SARin mode measurements are used.

Baseline-F, cycle 193: 26-Jul-2026 to 24-Aug-2026 · 11,735 L2I files · data covers 29.8 of 30 days Complete cycle processed 05-Oct-2026 08:08 UTC

SARin Ambiguity Warning: Maps

Global Single map
Map of SARin Ambiguity Warning. Global, Baseline-F, cycle 193
North Polar (>60N) Single map
Map of SARin Ambiguity Warning. North Polar (>60N), Baseline-F, cycle 193
South Polar (<60S) Single map
Map of SARin Ambiguity Warning. South Polar (<60S), Baseline-F, cycle 193

SARin Ambiguity Warning: Cycle 193 Statistics

Area Records Valid No warning % Warning % Not checked % Unwrapped % Other
Global 54,725,022 7,435,625 (13.6%) 31.04 17.74 51.22 0.00 0
North Polar (>60N) 9,346,060 2,603,825 (27.9%) 17.75 7.30 74.95 0.00 0
South Polar (<60S) 9,262,531 2,925,207 (31.6%) 63.07 35.51 1.42 0.00 0

Statistics use every 20 Hz measurement of the cycle within each area. Flag percentages are of the valid (non-fill) values.

SARin Ambiguity Warning: Trends

Baselines:
Baseline-F statistics (CSV)

Click a point to show that cycle.

SARin Ambiguity Warning: All Cycles from Baseline-F

Cycle Timespan Coverage (days) GlobalNorth Polar (>60N)South Polar (<60S)
194 25-Aug-2026 to 23-Sep-2026 17.9 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 29.8 Global map, cycle 193 North Polar (>60N) map, cycle 193 South Polar (<60S) map, cycle 193
192 26-Jun-2026 to 25-Jul-2026 21.8 partial Global map, cycle 192 North Polar (>60N) map, cycle 192 South Polar (<60S) map, cycle 192