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

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Gap analyses by variable or by type of mission or by WIGOS subcomponent

Please select either a variable or a type of mission to display a time chart of satellite instruments having the potential to provide the corresponding measurements. The selection is based on design characteristics (Expert analysis) or declared mission objectives (Simplified analysis). Such a preliminary analysis does not replace a detailed assessment of the actual instrument performances, data availability, and quality of derived environmental data records against specific user requirements.

Note: The chart can be sorted by clicking on the header columns and filtered by instrument properties when applicable. Select the period of interest with the cursor at the bottom of the chart. Future missions which are not firmly planned are shaded with stripes. A warning icon () indicates degraded satellite: hover over the icon for details. The chart is followed by a table of all potentially relevant instruments.

Select a variable

or select a type of mission

Select WIGOS subcomponents

Subcomponent 1

Subcomponent 2

Subcomponent 3

Subcomponent 4

Instrument types

ECT range

Orbit types

Longitude range

Analysis

Expert system, based on instrument properties Help icon

Simplified, based on mission objectives 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.

Variable sorting criteria

	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 number and bandwiths of the VIS channels. RATING CRITERIA:
1	Many VIS channels with bandwidth ≤10 mm
2	Many VIS channels with bandwidth ≤20 mm, some of which ≤10 mm
3	Several VIS channels with bandwidth ≤20 mm, some of which ≤10 mm
4	Many VIS channels with bandwidth ≤20 mm
5	Few VIS channels with bandwidth ≤20 mm

Measurement timeline for Ocean Diffuse Attenuation Coefficient (DAC)

Definition:

Indicator of water turbidity and vertical processes in the ocean, extracted from ocean colour observation.

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

Found 58 results

This table has a large number of results.

Hide lower rated instruments

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Instrument	NRT?	Relevance	Satellite	Orbit	1978	1979	1980	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	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	2038	2039	2040	2041	2042	2043	2044
FLORIS		1 - primary	FLEX	10:00 desc																																														X	X	X	X
GLI		1 - primary	ADEOS-2	10:30 desc																								X	X
MERIS		1 - primary	Envisat	10:00 desc																								X	X	X	X	X	X	X	X	X	X	X
MODIS	Yes	1 - primary	Aqua	13:30 asc																								X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
MODIS	Yes	1 - primary	Terra	10:30 desc																					X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
MOS		1 - primary	IRS-P3	10:30 desc																		X	X	X	X	X	X	X	X	X
OCI		1 - primary	PACE	12:00 desc																																														X	X	X	X
OCM (OceanSat-3)		1 - primary	OceanSat-3	12:00 desc																																											X	X	X	X	X	X	X	X
OLCI	Yes	1 - primary	Sentinel-3A	10:00 desc																																						X	X	X	X	X	X	X	X
OLCI	Yes	1 - primary	Sentinel-3B	10:00 desc																																								X	X	X	X	X	X	X	X
OLCI		1 - primary	Sentinel-3C	10:00 desc																																													X	X	X	X	X	X	X	X
OLCI		1 - primary	Sentinel-3D	10:00 desc																																															X	X	X	X	X	X	X	X
Trasser		1 - primary	Okean-O-1	82.5 °																					X	X
Trasser		1 - primary	Okean-O1-3	82.5 °											X	X	X
SGLI		2 - very high	GCOM-C	10:30 asc																																							X	X	X	X	X	X
EPIC (DSCOVR)	Yes	3 - high	DSCOVR	N/A																																					X	X	X	X	X	X	X	X	X
COCTS		4 - fair	HY-1A	10:30 desc																								X	X	X
COCTS		4 - fair	HY-1B	10:30 desc																													X	X	X	X	X	X	X	X	X	X
COCTS		4 - fair	HY-1C	10:30 desc																																								X	X	X	X	X	X	X
COCTS		4 - fair	HY-1D	13:30 asc																																										X	X	X	X	X	X	X
COCTS		4 - fair	HY-1E	13:30 asc																																												X	X	X	X	X	X	X
COCTS		4 - fair	HY-1F	13:30 asc																																														X	X	X	X	X	X	X
DPC		4 - fair	GF-5	13:30 asc																																								X	X	X	X	X	X	X	X	X
DPC		4 - fair	GF-5-02	13:30 asc																																											X	X	X	X	X	X	X	X
GOCI		4 - fair	COMS	128.2°E																																X	X	X	X	X	X	X	X	X	X	X	X
GOCI-II		4 - fair	GEO-KOMPSAT-2B	128.2°E																																										X	X	X	X	X	X	X	X	X	X	X	X
MERSI-1		4 - fair	FY-3A	09:05 desc																														X	X	X	X	X	X	X	X
MERSI-1		4 - fair	FY-3B	14:45 asc																																X	X	X	X	X	X	X	X	X	X	X	X
MERSI-1		4 - fair	FY-3C	09:07 desc																																			X	X	X
MERSI-2	Yes	4 - fair	FY-3D	13:29 asc																																							X	X	X	X	X	X
MERSI-3		4 - fair	FY-3F	10:00 desc																																													X	X	X	X	X	X
MERSI-3		4 - fair	FY-3H	14:00 asc																																														X	X	X	X	X	X
MUS-uv/vis/nir		4 - fair	SAC-E/SABIA-MAR B	10:30 desc																																													X	X	X	X	X	X
OCI (FORMOSAT)		4 - fair	FORMOSAT-1	35 °																					X	X	X	X	X	X
OCM (OceanSat-1)		4 - fair	OceanSat-1 (IRS-P4)	12:00 desc																					X	X	X	X	X	X	X	X	X	X	X	X
OCM (OceanSat-2)	No	4 - fair	OceanSat-2	11:53 desc																															X	X	X	X	X	X	X	X	X	X	X	X	X
OCTS		4 - fair	ADEOS	10:30 desc																		X	X
OSMI		4 - fair	KOMPSAT-1	10:50 asc																					X	X	X	X	X	X	X	X	X	X
SeaWiFS		4 - fair	OrbView-2/SeaStar	12:00 desc																			X	X	X	X	X	X	X	X	X	X	X	X	X	X
3MI		5 - marginal	Metop-SG-A2	09:30 desc																																																					X	X	X	X	X	X	X	X
3MI		5 - marginal	Metop-SG-A3	09:30 desc																																																											X	X	X	X	X	X	X	X
3MI		5 - marginal	Metop-SG-A1	09:30 desc																																														X	X	X	X	X	X	X	X
CZCS		5 - marginal	Nimbus-7	12:00 desc	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
METimage		5 - marginal	Metop-SG-A2	09:30 desc																																																					X	X	X	X	X	X	X	X
METimage		5 - marginal	Metop-SG-A3	09:30 desc																																																											X	X	X	X	X	X	X	X
METimage		5 - marginal	Metop-SG-A1	09:30 desc																																														X	X	X	X	X	X	X	X
MSU-MR-MP		5 - marginal	Meteor-MP N1	15:30 asc																																															X	X	X	X	X	X	X	X
MSU-MR-MP		5 - marginal	Meteor-MP N2	09:30 desc																																																X	X	X	X	X	X	X	X
Polarimeters		5 - marginal	PACE	12:00 desc																																														X	X	X	X
POLDER		5 - marginal	ADEOS	10:30 desc																		X	X
POLDER		5 - marginal	ADEOS-2	10:30 desc																								X	X
POLDER		5 - marginal	PARASOL	15:20 asc																										X	X	X	X	X	X	X	X	X	X
TANSO-CAI/2		5 - marginal	GOSAT-2	13:00 desc																																								X	X	X	X	X	X
VIIRS	Yes	5 - marginal	NOAA-20	13:25 asc																																							X	X	X	X	X	X	X	X
VIIRS		5 - marginal	JPSS-2	13:30 asc																																												X	X	X	X	X	X	X	X
VIIRS	Yes	5 - marginal	SNPP	13:25 asc																																	X	X	X	X	X	X	X	X	X	X	X
VIIRS		5 - marginal	JPSS-3	13:30 asc																																																	X	X	X	X	X	X	X	X
VIIRS		5 - marginal	JPSS-4	13:30 asc																																																						X	X	X	X	X	X	X	X

All instruments for measuring Ocean Diffuse Attenuation Coefficient (DAC)

Instruments	Relevance	Operational limitations
FLORIS	1 - primary
GLI	1 - primary
MERIS	1 - primary
MODIS	1 - primary
MOS	1 - primary
OCI	1 - primary
OCM (OceanSat-3)	1 - primary
OLCI	1 - primary
Trasser	1 - primary
SGLI	2 - very high
EPIC (DSCOVR)	3 - high
SZS	3 - high
COCTS	4 - fair
DPC	4 - fair
GOCI	4 - fair
GOCI-II	4 - fair
MERSI-1	4 - fair
MERSI-2	4 - fair
MERSI-3	4 - fair
MUS-uv/vis/nir	4 - fair
OCI (FORMOSAT)	4 - fair
OCM (OceanSat-1)	4 - fair
OCM (OceanSat-2)	4 - fair
OCS	4 - fair
OCTS	4 - fair
OSMI	4 - fair
SeaWiFS	4 - fair
3MI	5 - marginal
CZCS	5 - marginal
METimage	5 - marginal
MSU-MR-MP	5 - marginal
Polarimeters	5 - marginal
POLDER	5 - marginal
TANSO-CAI/2	5 - marginal
VIIRS	5 - marginal
APS	5 - marginal