WMO OSCAR | Gap analyses by variable, type of mission or WIGOS subcomponent

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Gap analyses by variable, type of mission or WIGOS subcomponent

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Simplified, based on mission objectives Help icon

Expert system, based on instrument properties Help icon

In "Simplified" mode, the results in the analysis are calculated by looking at each instrument's mission objectives: for each instrument we keep track of what the primary, secondary, and opportunity mission objectives are. These mission objectives indicate that an instrument is primarily envisioned to measure variable X, Y and Z, that variables A, B and C are its secondary objective, and that it may offer the opportunity to measure variables I and II although it is not optimized for that. The simplified Gap analysis produces a timeline based on this information. The simplified Gap analysis is only available for analyzing variables, not for missions.

In "Expert system" mode, the results in the analysis are calculated with an expert system. Internally, OSCAR works with a large set of 1700 rules that determine whether or not an instrument is capable of measuring a given variable, and to what degree. When you select "Expert system", the Gap analysis is performed based on this large set of rules.

Measurement timeline for Ocean dynamic topography Help icon

Hint: Move around in the timeline by scrolling up, down, left or right.

Found 39 results

This table has a large number of results.

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Instrument	NRT?	Relevance	Satellite	ECT/Lon	Orbit	DLR	1978	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	2026	2027	2028	2029	2030	2031	2032	2033	2034	2035	2036	2037
IRIS (CRISTAL)		1 - primary	CRISTAL-A	92 °	DRIFT																																														X	X	X	X	X	X	X
IRIS (CRISTAL)		1 - primary	CRISTAL-B	92 °	DRIFT																																																	X	X	X	X	X	X
KaRIN		1 - primary	SWOT	78 °	DRIFT																																								X	X	X	X	X
SWIM		1 - primary	CFOSAT	07:00 desc	SunSync																																				X	X	X	X	X	X	X
SWIM		1 - primary	HY-2L	07:00 desc	SunSync																																											X	X	X	X
SHIOSAI		1 - primary	COMPIRA	51 °	DRIFT																																										X	X	X	X
ALT (high)		2 - very high	HY-2C	66 °	DRIFT																																						X	X	X	X	X	X
ALT (high)		2 - very high	HY-2F	66 °	DRIFT																																											X	X	X	X	X
ALT (high)		2 - very high	HY-2D	66 °	DRIFT																																							X	X	X	X	X	X
ALT (sso)		2 - very high	HY-2A	06:00 desc	SunSync																													X	X	X	X	X	X	X	X	X	X	X	X
ALT (sso)		2 - very high	HY-2B	06:00 desc	SunSync																																				X	X	X	X	X	X	X
ALT (sso)		2 - very high	HY-2E	06:00 desc	SunSync																																										X	X	X	X	X
Altimeter (COMPIRA)		2 - very high	COMPIRA	51 °	DRIFT																																										X	X	X	X
NRA		2 - very high	TOPEX-Poseidon	66 °	DRIFT										X	X	X	X	X	X	X	X	X	X	X	X	X	X
Poseidon-2		2 - very high	JASON-1	66 °	DRIFT																			X	X	X	X	X	X	X	X	X	X	X	X	X
Poseidon-3		2 - very high	JASON-2	66 °	DRIFT																										X	X	X	X	X	X	X	X	X	X	X	X
Poseidon-3B	Yes	2 - very high	JASON-3	66 °	DRIFT	143																																	X	X	X	X	X	X	X	X	X	X	X	X
Poseidon-3C		2 - very high	SWOT	78 °	DRIFT																																								X	X	X	X	X
Poseidon-4		2 - very high	Sentinel-6A	66 °	DRIFT																																						X	X	X	X	X	X	X	X
Poseidon-4		2 - very high	Sentinel-6B	66 °	DRIFT																																											X	X	X	X	X	X	X	X
Poseidon-4		2 - very high	Sentinel-6C	66 °	DRIFT																																																X	X	X	X	X	X	X
RA-2		2 - very high	Envisat	10:00 desc	SunSync																				X	X	X	X	X	X	X	X	X	X	X
SRAL	Yes	2 - very high	Sentinel-3A	10:00 desc	SunSync	148																																	X	X	X	X	X	X	X	X	X	X	X
SRAL	Yes	2 - very high	Sentinel-3B	10:00 desc	SunSync	143																																			X	X	X	X	X	X	X	X	X	X	X
SRAL		2 - very high	Sentinel-3C	10:00 desc	SunSync																																												X	X	X	X	X	X	X	X	X	X
SRAL		2 - very high	Sentinel-3D	10:00 desc	SunSync																																														X	X	X	X	X	X	X	X	X	X
AltiKa		3 - high	SARAL	05:56 asc	SunSync	143																														X	X	X	X	X	X	X	X	X	X	X	X
ALT (SeaSat)		3 - high	SeaSat	108 °	DRIFT		X
GFO-RA		3 - high	GFO	108 °	DRIFT																X	X	X	X	X	X	X	X	X	X	X
GRA		3 - high	GEOSat	108 °	DRIFT			X	X	X	X	X	X
RA		3 - high	ERS-1	10:30 desc	SunSync									X	X	X	X	X	X	X	X	X	X
RA		3 - high	ERS-2	10:30 desc	SunSync													X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
SIRAL		3 - high	CryoSat	92 °	SunSync																							X
SIRAL	No	3 - high	CryoSat-2	92 °	DRIFT																												X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
SSALT		3 - high	TOPEX-Poseidon	66 °	DRIFT										X	X	X	X	X	X	X	X	X	X	X	X	X	X
GEDI Lidar		4 - fair	ISS GEDI	51.6 °	DRIFT																																				X	X	X	X	X	X	X	X	X
MOLI lidar		4 - fair	ISS MOLI	51.6 °	DRIFT																																										X	X	X	X	X
GLAS		5 - marginal	ICESat	94 °	DRIFT																					X	X	X	X	X	X	X	X
ATLAS		5 - marginal	ICESat-2	94 °	DRIFT																																				X	X	X	X	X	X	X	X	X

All instruments for measuring Ocean dynamic topography

Instruments	Relevance	Operational limitations
IRIS (CRISTAL)	1 - primary
KaRIN	1 - primary
SWIM	1 - primary
SHIOSAI	1 - primary
ALT (high)	2 - very high
ALT (sso)	2 - very high
Altimeter (COMPIRA)	2 - very high
NRA	2 - very high
Poseidon-2	2 - very high
Poseidon-3	2 - very high
Poseidon-3B	2 - very high
Poseidon-3C	2 - very high
Poseidon-4	2 - very high
RA-2	2 - very high
SRAL	2 - very high
AltiKa	3 - high
ALT (SeaSat)	3 - high
GFO-RA	3 - high
GRA	3 - high
RA	3 - high
SIRAL	3 - high
SSALT	3 - high
GEDI Lidar	4 - fair
MOLI lidar	4 - fair
VCL	4 - fair
GLAS	5 - marginal
ATLAS	5 - marginal

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	Each instrument is assigned with a 5-step rating, evaluated as a blend of several elements. For this particular Variable, the rating is driven by: the exploited technology (radar or lidar); the large swath capability. RATING CRITERIA:
1	Large swath radar altimeter with built-in passive MW frequencies for water vapour correction Large swath radar altimeter
2	Nadir-only radar altimeter with supporting C- or S- band frequency for ionospheric rotation
3	Nadir-only radar altimeter
4	Large-swath lidar altimeter
5	Nadir-only lidar altimeter

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Gap analyses by variable, type of mission or WIGOS subcomponent

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