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L2 Parameters

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L2I Parameters

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Further Info

ESA Cryosat Site

Crossover Statistics and Trends

This section provides r.m.s elevation residuals in different modes and areas from the crossovers generated from 30 or 60-day datatakes of L2 GDR-A.

The first crossover data take starts from 18/10/2010, following the switch to SIRAL-A at the end of the commissioning phase.

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Data Take Period:

30-days 60-days

IPF Baseline:

E D C B A

Phase:

Operational Commissioning

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Trends (LRM)

Area	Mode	r.m.s	% < 1.0m	XTT-mean
Antarctica	LRM	view	view	view
Greenland	LRM	view	view	view
Global Oceans	LRM	view	view	view

Trends (SARIN)

Area	Mode	r.m.s	% < 10.0m	XTT-mean
Antarctica	SARIN	view	view	view
Greenland	SARIN	view	view	view

Statistics per 30-day Cycle for Baseline-E

View per-cycle statistics for Antarctica, Greenland and Global Oceans

Antarctica

Data take	Timespan	LRM	SARIN	Surface
140	19/3/22 -> 17/4/22	82437 xovers < 10.0m (63.4%) 0.41 m r.m.s / 0.01 m mean XTT mean -0.87 ms	65704 xovers < 10.0m (83.0%) 1.87 m r.m.s / 0.01 m mean XTT mean 1.05 ms	Land
139	17/2/22 -> 18/3/22	33884 xovers < 10.0m (63.8%) 0.40 m r.m.s / 0.02 m mean XTT mean -0.88 ms	203229 xovers < 10.0m (82.4%) 1.88 m r.m.s / 0.03 m mean XTT mean 0.23 ms	Land
138	18/1/22 -> 16/2/22	37671 xovers < 10.0m (62.2%) 0.41 m r.m.s / 0.01 m mean XTT mean -0.36 ms	184553 xovers < 10.0m (82.9%) 1.84 m r.m.s / 0.03 m mean XTT mean 0.29 ms	Land
137	19/12/21 -> 17/1/22	41439 xovers < 10.0m (60.4%) 0.42 m r.m.s / 0.01 m mean XTT mean -0.88 ms	11759 xovers < 10.0m (83.1%) 1.82 m r.m.s / -0.01 m mean XTT mean 0.48 ms	Land
136	19/11/21 -> 18/12/21	38876 xovers < 10.0m (61.6%) 0.42 m r.m.s / 0.00 m mean XTT mean -1.44 ms	230855 xovers < 10.0m (83.9%) 1.80 m r.m.s / 0.06 m mean XTT mean -0.64 ms	Land
135	20/10/21 -> 18/11/21	36927 xovers < 10.0m (61.8%) 0.42 m r.m.s / 0.00 m mean XTT mean -1.29 ms	195942 xovers < 10.0m (84.6%) 1.77 m r.m.s / 0.02 m mean XTT mean 0.60 ms	Land
134	20/9/21 -> 19/10/21	42444 xovers < 10.0m (60.5%) 0.42 m r.m.s / 0.00 m mean XTT mean -0.59 ms	220749 xovers < 10.0m (84.7%) 1.73 m r.m.s / -0.05 m mean XTT mean 0.44 ms	Land
133	21/8/21 -> 19/9/21	45272 xovers < 10.0m (60.5%) 0.42 m r.m.s / 0.01 m mean XTT mean -1.28 ms	14110 xovers < 10.0m (84.7%) 1.75 m r.m.s / 0.03 m mean XTT mean -0.28 ms	Land

Greenland

Data take	Timespan	LRM	SARIN	Surface
140	19/3/22 -> 17/4/22	527 xovers < 1.0m (82.9%) 0.32 m r.m.s / 0.03 m mean XTT mean 3.45 ms	18107 xovers < 1.0m (70.6%) 1.97 m r.m.s / 0.09 m mean XTT mean 0.36 ms	Land
139	17/2/22 -> 18/3/22	196 xovers < 1.0m (83.4%) 0.32 m r.m.s / 0.05 m mean XTT mean 3.77 ms	48984 xovers < 1.0m (71.2%) 1.92 m r.m.s / -0.08 m mean XTT mean -2.87 ms	Land
138	18/1/22 -> 16/2/22	264 xovers < 1.0m (84.9%) 0.31 m r.m.s / 0.03 m mean XTT mean -1.97 ms	44275 xovers < 1.0m (71.2%) 1.90 m r.m.s / -0.09 m mean XTT mean 0.36 ms	Land
137	19/12/21 -> 17/1/22	313 xovers < 1.0m (81.7%) 0.30 m r.m.s / 0.02 m mean XTT mean 5.30 ms	2625 xovers < 1.0m (71.9%) 1.85 m r.m.s / 0.00 m mean XTT mean 0.43 ms	Land
136	19/11/21 -> 18/12/21	277 xovers < 1.0m (81.7%) 0.29 m r.m.s / 0.00 m mean XTT mean 1.07 ms	51310 xovers < 1.0m (71.8%) 1.84 m r.m.s / -0.02 m mean XTT mean -0.09 ms	Land
135	20/10/21 -> 18/11/21	249 xovers < 1.0m (77.6%) 0.32 m r.m.s / 0.05 m mean XTT mean 2.86 ms	37755 xovers < 1.0m (72.3%) 1.85 m r.m.s / -0.04 m mean XTT mean -1.74 ms	Land
134	20/9/21 -> 19/10/21	312 xovers < 1.0m (80.0%) 0.32 m r.m.s / 0.01 m mean XTT mean 4.75 ms	45779 xovers < 1.0m (73.2%) 1.82 m r.m.s / -0.04 m mean XTT mean -0.73 ms	Land
133	21/8/21 -> 19/9/21	337 xovers < 1.0m (76.9%) 0.35 m r.m.s / 0.01 m mean XTT mean 3.46 ms	2373 xovers < 1.0m (71.2%) 1.82 m r.m.s / 0.05 m mean XTT mean -0.11 ms	Land

Global Oceans

Data take	Timespan	LRM	SARIN	Surface
140	19/3/22 -> 17/4/22	19245 xovers < 1.0m (98.6%) 0.117 m r.m.s / -0.00 m mean XTT mean 0.09 ms	-	Ocean
139	17/2/22 -> 18/3/22	6679 xovers < 1.0m (98.3%) 0.121 m r.m.s / -0.00 m mean XTT mean -0.05 ms	-	Ocean
138	18/1/22 -> 16/2/22	8543 xovers < 1.0m (98.6%) 0.121 m r.m.s / 0.00 m mean XTT mean 0.01 ms	-	Ocean
137	19/12/21 -> 17/1/22	9326 xovers < 1.0m (98.7%) 0.121 m r.m.s / -0.00 m mean XTT mean 0.05 ms	-	Ocean
136	19/11/21 -> 18/12/21	8726 xovers < 1.0m (98.6%) 0.121 m r.m.s / -0.01 m mean XTT mean 0.25 ms	-	Ocean
135	20/10/21 -> 18/11/21	7928 xovers < 1.0m (98.5%) 0.120 m r.m.s / -0.00 m mean XTT mean 0.15 ms	-	Ocean
134	20/9/21 -> 19/10/21	9186 xovers < 1.0m (98.3%) 0.125 m r.m.s / 0.00 m mean XTT mean 0.05 ms	-	Ocean
133	21/8/21 -> 19/9/21	10206 xovers < 1.0m (98.5%) 0.121 m r.m.s / 0.00 m mean XTT mean 0.09 ms	-	Ocean

©UCL 2011, Mullard Space Science Laboratory