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 multi-viewing capability, including diurnal change of the solar incidence angle (from GEO or Molniya);
  • the covered spectral range.

 

RATING CRITERIA:

1

  • Radiometer with channels in VIS, NIR and SWIR, with multi-viewing capability

2

  • Radiometer with channels in VIS and NIR, with multi-viewing capability

3

  • Radiometer with channels in VIS, NIR and SWIR, flown in GEO

4

  • Spectrometer or radiometer with channels in VIS and NIR, flown in GEO or Molniya

5

  • Spectrometer covering VIS, flown in GEO
Measurement timeline for Earth surface short-wave bidirectional reflectance

Definition:

Reflectance of the Earth surface as a function of the viewing angle and the illumination angle in the range 0.4-0.7 . The distribution of this variable is represented by the Bidirectional Reflectance Distribution Function (BRDF)

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

Found 59 results

This table has a large number of results.
Hide inactive instruments
Instrument NRT? Relevance Satellite Orbit
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
2044
2045
2046
3MI1 - primaryMetop-SG-A209:30 descXXXXXXXX
3MI1 - primaryMetop-SG-A309:30 descXXXXXXXX
3MI1 - primaryMetop-SG-A109:30 descXXXXXXXX
MAIA1 - primaryMAIATBDXXXX
Polarimeters1 - primaryPACE12:00 descXXXX
AATSR1 - primaryEnvisat10:00 desc
X
XXXXXXXXX
X
ATSR-2 Important note1 - primaryERS-210:30 desc
X
XXXXXXXXXXXX
X
SLSTRYes1 - primarySentinel-3A10:00 desc
X
XXXXXXX
SLSTRYes1 - primarySentinel-3B10:00 desc
X
XXXXXXX
SLSTR1 - primarySentinel-3C10:00 descXXXXXXXX
SLSTR1 - primarySentinel-3D10:00 descXXXXXXXX
MISRYes2 - very highTerra10:30 desc
X
XXXXXXXXXXXXXXXXXXXXXXXX
POLDER2 - very highADEOS10:30 desc
X
X
POLDER2 - very highADEOS-210:30 desc
X
X
POLDER2 - very highPARASOL15:20 asc
X
XXXXXXXX
X
ABI3 - highGOES-1675.2°W
X
XXXXXXXXXXX
ABI Important noteYes3 - highGOES-17137.2°W
X
XXXXXXXXXXX
ABI3 - highGOES-T137°E
X
XXXXXXXXXXX
ABI3 - highGOES-U75°WXXXXXXXXXXXX
AGRIYes3 - highFY-4A104.7°E
X
XXXXX
AGRI3 - highFY-4B123.5°E
X
XXXXXXX
AGRI3 - highFY-4C86.5°E
X
XXXXXXX
AGRI3 - highFY-4D105°EXXXXXXXX
AGRI3 - highFY-4E86.5°EXXXXXXXX
AGRI3 - highFY-4F105°EXXXXXXXX
AGRI3 - highFY-4G86.5°EXXXXXXXX
AHIYes3 - highHimawari-8140.7°E
X
XXXXXXXXXXXXXXXX
AHI3 - highHimawari-9140.7°E
X
XXXXXXXXXXXXXX
AMIYes3 - highGEO-KOMPSAT-2A128.2°E
X
XXXXXXXXXXX
CCD3 - highINSAT-2E83°E
X
XXXXXXXXXXXX
X
CCD3 - highINSAT-3A93.5°E
X
XXXXXXXXXXXX
X
FCI3 - highMTG-I1XXXXXXXXX
FCI3 - highMTG-I2XXXXXXXXX
FCI3 - highMTG-I3XXXXXXXXX
FCI3 - highMTG-I4XXXXXXXXX
MSU-GSM3 - highElectro-M N114.5°WXXXXXXXXXXX
MSU-GSM3 - highElectro-M N276°EXXXXXXXXXXX
MSU-GSM3 - highElectro-M N3165.8°EXXXXXXXXXXX
SEVIRI3 - highMeteosat-83.7°E
X
XXXXXXXXXXXXX
X
SEVIRI Important noteYes3 - highMeteosat-93.5°E
X
XXXXXXXXXXXXXXXXXXX
SEVIRI Important noteYes3 - highMeteosat-109.5°E
X
XXXXXXXXXXXXXXXXXX
SEVIRI3 - highMeteosat-11
X
XXXXXXXXXXXXXXXXXX
SEVIRI Important note3 - highMeteosat-8 (IODC)41.5°E
X
XXXXXX
Sentinel-44 - fairMTG-S1XXXXXXXXX
Sentinel-44 - fairMTG-S2XXXXXXXXX
GOCI4 - fairCOMS128.2°E
X
XXXXXXXXXX
X
GOCI-II4 - fairGEO-KOMPSAT-2B128.2°E
X
XXXXXXXXXXX
MSU-GS4 - fairElectro-L N129.6°W
X
XXXXX
MSU-GS Important noteYes4 - fairElectro-L N214.5°W
X
XXXXXXXXXX
MSU-GS4 - fairElectro-L N376°E
X
XXXXXXXXXX
MSU-GS4 - fairElectro-L N4166°EXXXXXXXXXXX
MSU-GS4 - fairElectro-L N576°EXXXXXXXXXXX
MSU-GS/A4 - fairArctica-M N163.4 °
X
XXXXXXXXXX
MSU-GS/A4 - fairArctica-M N263.4 °XXXXXXXXXXX
MSU-GS/A4 - fairArctica-M N363.4 °XXXXXXXXXXX
MSU-GS/A4 - fairArctica-M N463.4 °XXXXXXXXXXX
MSU-GS/A4 - fairArctica-M N563.4 °XXXXXXXXXXX
GEMS5 - marginalGEO-KOMPSAT-2B128.2°E
X
XXXXXXXXXXX
TEMPO5 - marginalTEMPO100°W
X
XXX
All instruments for measuring Earth surface short-wave bidirectional reflectance
Instruments Relevance Operational limitations
3MI1 - primary
MAIA1 - primary
Polarimeters1 - primary
AATSR1 - primary
ATSR-21 - primary
SLSTR1 - primary
APS1 - primary
MISR2 - very high
POLDER2 - very high
ABI3 - high
AGRI3 - high
AHI3 - high
AMI3 - high
CCD3 - high
FCI3 - high
MSU-GSM3 - high
SEVIRI3 - high
Sentinel-44 - fair
GOCI4 - fair
GOCI-II4 - fair
MSU-GS4 - fair
ISR4 - fair
MSU-GS/A4 - fair
GEMS5 - marginal
TEMPO5 - marginal