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 such as the uncertainty, the vertical resolution, and the frequency and spatial resolution of the retrieved measurement in comparison with the space-time variability of the geophysical parameter. For this particular Variable, the rating is driven by: the technique used to measure atmospheric drag. RATING CRITERIA:
1	GNSS radio-occultation sounding
2	-
3	Laser retroreflector array during satellite re-entry
4	-
5	Gradiometer

Measurement timeline for Atmospheric density

Definition:

3D field of density of the atmosphere

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

Found 52 results

This table has a large number of results.

Hide lower rated instruments

Hide inactive instruments

Instrument	NRT?	Relevance	Satellite	Orbit	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	2038	2039	2040	2041	2042	2043	2044	2045	2046
AOPOD		1 - primary	KOMPSAT-5	06:00 asc																			X	X	X	X	X	X	X	X	X	X
ARMA-MP		1 - primary	Meteor-MP N1	15:30 asc																															X	X	X	X	X	X	X	X
ARMA-MP		1 - primary	Meteor-MP N2	09:30 desc																																X	X	X	X	X	X	X	X
BlackJack (CHAMP)		1 - primary	CHAMP	87 °						X	X	X	X	X	X	X	X	X
BlackJack (GRACE)	No	1 - primary	GRACE (2 sats)	89 °								X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
CION		1 - primary	CICERO																								X	X	X	X	X	X	X	X	X
CION-2		1 - primary	CICERO-2																													X	X	X	X	X	X	X	X	X	X	X	X	X	X
CORISS		1 - primary	C/NOFS	13 °														X	X	X	X	X	X	X	X
GNOS	Yes	1 - primary	FY-3C	08:20 desc																			X	X	X	X	X	X	X	X	X	X
GNOS	Yes	1 - primary	FY-3D	13:29 asc																							X	X	X	X	X	X
GNOS-2		1 - primary	FY-3E	05:40 desc																											X	X	X	X	X	X	X
GNOS-2		1 - primary	FY-3H	14:00 asc																													X	X	X	X	X	X	X
GNOS-2		1 - primary	FY-3F	10:00 desc																												X	X	X	X	X	X	X
GNOS-2		1 - primary	FY-3J	05:00 desc																																	X	X	X	X	X	X	X	X	X
GNOS-2		1 - primary	FY-3G	50 °																													X	X	X	X	X
GNOS-2		1 - primary	FY-3I	50 °																																X	X	X	X	X	X	X	X	X
GNSS-RO (Sentinel-6)		1 - primary	Sentinel-6A	66 °																										X	X	X	X	X	X	X	X
GNSS-RO (Sentinel-6)		1 - primary	Sentinel-6B	66 °																															X	X	X	X	X	X	X	X
GOLPE		1 - primary	SAC-C	10:20 desc						X	X	X	X	X	X	X	X	X	X	X	X	X	X
GPS/MET		1 - primary	OrbView-1/MicroLab	70 °	X	X	X
GRAS	No	1 - primary	Metop-A	07:50 desc												X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
GRAS	Yes	1 - primary	Metop-B	09:31 desc																		X	X	X	X	X	X	X	X	X	X	X	X	X
GRAS	Yes	1 - primary	Metop-C	09:31 desc																								X	X	X	X	X	X	X	X	X	X
IGOR (COSMIC)	No	1 - primary	COSMIC-1	72 °												X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
IGOR (TacSat-2)		1 - primary	TacSat-2	40 °												X	X
Pyxis-RO		1 - primary	GNOMES-1	TBD																										X	X
Pyxis-RO		1 - primary	GNOMES-2	TBD																											X	X	X	X	X	X
Pyxis-RO		1 - primary	GNOMES-3	TBD																												X	X	X	X	X	X
RO		1 - primary	Metop-SG-A2	09:30 desc																																					X	X	X	X	X	X	X	X
RO		1 - primary	Metop-SG-A3	09:30 desc																																												X	X	X	X	X	X	X	X
RO		1 - primary	Metop-SG-B1	09:30 desc																															X	X	X	X	X	X	X	X
RO		1 - primary	Metop-SG-B2	09:30 desc																																						X	X	X	X	X	X	X	X
RO		1 - primary	Metop-SG-B3	09:30 desc																																													X	X	X	X	X	X	X	X
RO		1 - primary	Metop-SG-A1	09:30 desc																														X	X	X	X	X	X	X	X
ROHPP		1 - primary	SEOSAR/Paz	06:00 asc																								X	X	X	X	X	X
ROSA		1 - primary	Megha-Tropiques	20 °																	X	X	X	X	X	X	X	X	X
ROSA		1 - primary	SAC-D	06:00 desc																	X	X	X	X	X
ROSA (OceanSat)	No	1 - primary	OceanSat-2	11:53 desc															X	X	X	X	X	X	X	X	X	X	X	X	X	X
STRATOS		1 - primary	Lemur-2																						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	X
TGRS (COSMIC-2)		1 - primary	COSMIC-2	24 °																									X	X	X	X	X	X	X	X
TOR		1 - primary	TerraSAR-X	06:00 desc													X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
TOR		1 - primary	TanDEM-X	06:00 desc																X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
Tri-G (GRACE-FO)		1 - primary	GRACE-FO (2 sats)	89 °																								X	X	X	X	X	X
TRSR (Ørsted)	No	1 - primary	Ørsted	96.5 °					X	X	X	X	X	X	X	X
RRA		3 - high	GFZ-1	51.6 °	X	X	X	X	X
ACC		5 - marginal	SWARM-C	87.35 °																			X	X	X	X	X	X	X	X	X	X
ACC		5 - marginal	SWARM-B	87.75 °																			X	X	X	X	X	X	X	X	X	X
ACC		5 - marginal	SWARM-A	87.35 °																			X	X	X	X	X	X	X	X	X	X
EGG		5 - marginal	GOCE	06:00 asc															X	X	X	X	X
STAR		5 - marginal	CHAMP	87 °						X	X	X	X	X	X	X	X	X	X	X
SuperSTAR	No	5 - marginal	GRACE (2 sats)	89 °								X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
SuperSTAR		5 - marginal	GRACE-FO (2 sats)	89 °																								X	X	X	X	X	X

All instruments for measuring Atmospheric density

Instruments	Relevance	Operational limitations
AOPOD	1 - primary
ARMA-MP	1 - primary
BlackJack (CHAMP)	1 - primary
BlackJack (GRACE)	1 - primary
CION	1 - primary
CION-2	1 - primary
CORISS	1 - primary
GNOS	1 - primary
GNOS-2	1 - primary
GNSS-RO	1 - primary
GNSS-RO (Sentinel-6)	1 - primary
GOLPE	1 - primary
GPS/MET	1 - primary
GRAS	1 - primary
IGOR (COSMIC)	1 - primary
IGOR (TacSat-2)	1 - primary
IGOR (TanDEM)	1 - primary
Pyxis-RO	1 - primary
Radiomet	1 - primary
RO	1 - primary
ROHPP	1 - primary
ROSA	1 - primary
ROSA (OceanSat)	1 - primary
STRATOS	1 - primary
TGRS (COSMIC-2)	1 - primary
TOR	1 - primary
Tri-G (GRACE-FO)	1 - primary
TRSR (Ørsted)	1 - primary
RRA	3 - high
ACC	5 - marginal
EGG	5 - marginal
STAR	5 - marginal
SuperSTAR	5 - marginal