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 (Important note) 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

Analysis
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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 inactive instruments
Instrument NRT? Relevance Satellite Orbit
1976
1977
1978
1979
1980
1981
1982
1983
1984
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
2038
2039
2040
2041
2042
2043
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2045
2046
FLORIS1 - primaryFLEX10:00 descXXXX
GLI1 - primaryADEOS-210:30 desc
X
X
MERIS1 - primaryEnvisat10:00 desc
X
XXXXXXXXX
X
MODISYes1 - primaryAqua13:30 asc
X
XXXXXXXXXXXXXXXXXXXXX
MODISYes1 - primaryTerra10:30 desc
X
XXXXXXXXXXXXXXXXXXXXXXXX
MOS1 - primaryIRS-P310:30 desc
X
XXXXXXX
X
OCI1 - primaryPACE12:00 descXXXX
OCM (OceanSat-3)1 - primaryOceanSat-312:00 desc
X
XXXXXXX
OLCI Yes1 - primarySentinel-3A10:00 desc
X
XXXXXXX
OLCI Yes1 - primarySentinel-3B10:00 desc
X
XXXXXXX
OLCI 1 - primarySentinel-3C10:00 descXXXXXXXX
OLCI 1 - primarySentinel-3D10:00 descXXXXXXXX
Trasser1 - primaryOkean-O-182.5 °
X
X
Trasser1 - primaryOkean-O1-382.5 °
X
X
X
SGLI2 - very highGCOM-C10:30 asc
X
XXXXX
EPIC (DSCOVR)Yes3 - highDSCOVRN/A
X
XXXXXXXX
COCTS4 - fairHY-1A10:30 desc
X
X
X
COCTS4 - fairHY-1B10:30 desc
X
XXXXXXXX
X
COCTS4 - fairHY-1C10:30 desc
X
XXXXXX
COCTS4 - fairHY-1D13:30 asc
X
XXXXXX
COCTS4 - fairHY-1E13:30 ascXXXXXXX
COCTS4 - fairHY-1F13:30 ascXXXXXXX
DPC4 - fairGF-513:30 asc
X
XXXXXXXX
DPC4 - fairGF-5-0213:30 asc
X
XXXXXXX
GOCI4 - fairCOMS128.2°E
X
XXXXXXXXXX
X
GOCI-II4 - fairGEO-KOMPSAT-2B128.2°E
X
XXXXXXXXXXX
MERSI-14 - fairFY-3A09:05 desc
X
XXXXXX
X
MERSI-1 Important note4 - fairFY-3B14:45 asc
X
XXXXXXXXXXX
MERSI-1 Important note4 - fairFY-3C09:07 desc
X
X
X
MERSI-2Yes4 - fairFY-3D13:29 asc
X
XXXXX
MERSI-34 - fairFY-3F10:00 desc
X
XXXXX
MERSI-34 - fairFY-3H14:00 asc
X
XXXXX
MUS-uv/vis/nir4 - fairSAC-E/SABIA-MAR B10:30 descXXXXXX
OCI (FORMOSAT)4 - fairFORMOSAT-135 °
X
XXXX
X
OCM (OceanSat-1)4 - fairOceanSat-1 (IRS-P4)12:00 desc
X
XXXXXXXXXX
X
OCM (OceanSat-2)No4 - fairOceanSat-211:53 desc
X
XXXXXXXXXXXX
OCTS4 - fairADEOS10:30 desc
X
X
OSMI4 - fairKOMPSAT-110:50 asc
X
XXXXXXXX
X
SeaWiFS4 - fairOrbView-2/SeaStar12:00 desc
X
XXXXXXXXXXXX
X
3MI5 - marginalMetop-SG-A209:30 descXXXXXXXX
3MI5 - marginalMetop-SG-A309:30 descXXXXXXXX
3MI5 - marginalMetop-SG-A109:30 descXXXXXXXX
CZCS5 - marginalNimbus-712:00 desc
X
XXXXXXXXXXXXXXX
X
METimage5 - marginalMetop-SG-A209:30 descXXXXXXXX
METimage5 - marginalMetop-SG-A309:30 descXXXXXXXX
METimage5 - marginalMetop-SG-A109:30 descXXXXXXXX
MSU-MR-MP5 - marginalMeteor-MP N115:30 ascXXXXXXXX
MSU-MR-MP5 - marginalMeteor-MP N209:30 descXXXXXXXX
Polarimeters5 - marginalPACE12:00 descXXXX
POLDER5 - marginalADEOS10:30 desc
X
X
POLDER5 - marginalADEOS-210:30 desc
X
X
POLDER5 - marginalPARASOL15:20 asc
X
XXXXXXXX
X
TANSO-CAI/25 - marginalGOSAT-213:00 desc
X
XXXXX
VIIRSYes5 - marginalNOAA-2013:25 asc
X
XXXXXXX
VIIRS5 - marginalJPSS-213:30 ascXXXXXXXX
VIIRSYes5 - marginalSNPP13:25 asc
X
XXXXXXXXXX
VIIRS5 - marginalJPSS-313:30 ascXXXXXXXX
VIIRS5 - marginalJPSS-413:30 ascXXXXXXXX
All instruments for measuring Ocean Diffuse Attenuation Coefficient (DAC)
Instruments Relevance Operational limitations
FLORIS1 - primary
GLI1 - primary
MERIS1 - primary
MODIS1 - primary
MOS1 - primary
OCI1 - primary
OCM (OceanSat-3)1 - primary
OLCI 1 - primary
Trasser1 - primary
SGLI2 - very high
EPIC (DSCOVR)3 - high
SZS3 - high
COCTS4 - fair
DPC4 - fair
GOCI4 - fair
GOCI-II4 - fair
MERSI-14 - fair
MERSI-24 - fair
MERSI-34 - fair
MUS-uv/vis/nir4 - fair
OCI (FORMOSAT)4 - fair
OCM (OceanSat-1)4 - fair
OCM (OceanSat-2)4 - fair
OCS4 - fair
OCTS4 - fair
OSMI4 - fair
SeaWiFS4 - fair
3MI5 - marginal
CZCS5 - marginal
METimage5 - marginal
MSU-MR-MP5 - marginal
Polarimeters5 - marginal
POLDER5 - marginal
TANSO-CAI/25 - marginal
VIIRS5 - marginal
APS5 - marginal