Gap analyses by variable or by type of mission

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

Instrument types
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 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 observing technique (active or passive);
  • the utilised MW frequencies.

 

RATING CRITERIA:

1

  • Radar scatterometer

2

  • MW radiometer with 4 frequencies: 37, 19, 10 and 7 GHz

3

  • MW radiometer with 3 frequencies: 37, 19; and 10 and/or 7 GHz

4

  • MW radiometer with 3 frequencies: 19, 10 and 7 GHz; or 2 frequencies: 37 and 19 GHz
  • Cluster of GNSS receivers
  • Large-swath radar altimeter

5

  • MW radiometer at 37 GHz
  • Radar altimeter (only nadir)
Measurement timeline for Wind speed (near surface)

Definition:

Speed of air at a known height above the surface which is to be specified in the metadata

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

Found 123 results

This table has a large number of results.
HideShow inactive instruments
Instrument NRT? Relevance Satellite Orbit
1972
1973
1974
1975
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1979
1980
1981
1982
1983
1984
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1987
1988
1989
1990
1991
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1997
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1999
2000
2001
2002
2003
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2005
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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
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2044
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2046
2047
WindRAD1 - primaryFY-3E05:30 descXXXXXX
WindRAD1 - primaryFY-3I05:30 descXXXXXX
AMI-SCAT1 - primaryERS-110:30 desc
X
XXXXXXXX
X
AMI-SCAT1 - primaryERS-210:30 desc
X
XXXXXXXXXXXXXXX
X
ASCATYes1 - primaryMetop-A08:46 desc
X
XXXXXXXXXXXXXXX
ASCATYes1 - primaryMetop-B09:30 desc
X
XXXXXXXXXXXX
ASCAT1 - primaryMetop-C09:30 desc
X
XXXXXXXXX
SCA (Scatterometer)1 - primaryMetop-SG-B109:30 descXXXXXXXX
SCA (Scatterometer)1 - primaryMetop-SG-B209:30 descXXXXXXXX
SCA (Scatterometer)1 - primaryMetop-SG-B309:30 descXXXXXXXX
NSCAT1 - primaryADEOS10:30 desc
X
X
OSCAT Important note1 - primaryOceanSat-211:53 desc
X
XXXX
X
OSCAT1 - primaryOceanSat-312:00 descXXXXXXXX
OSCATNo1 - primaryScatSat-108:45 desc
X
XXXXXX
RapidScat1 - primaryISS RapidScat51.6 °
X
X
X
SASS1 - primarySeaSat108 °
X
SCAT (CFOSAT)1 - primaryCFOSAT07:00 desc
X
XXXX
SCAT (CFOSAT)1 - primaryCFOSAT follow-on07:00 descXXXXXX
SCAT (HY-2A)1 - primaryHY-2B06:00 desc
X
XXXXX
SCAT (HY-2A)1 - primaryHY-2C66 °
X
XXXXX
SCAT (HY-2A)1 - primaryHY-2D66 °XXXXXX
SCAT (HY-2A)1 - primaryHY-2E06:00 descXXXXXX
SCAT (HY-2A)1 - primaryHY-2F66 °XXXXXX
SCAT (HY-2A)1 - primaryHY-2G66 °XXXXXX
SCAT (HY-2A)1 - primaryHY-2A06:00 desc
X
XXXXXXXXXX
SeaWinds1 - primaryADEOS-210:30 desc
X
X
SeaWinds1 - primaryQuikSCAT06:00 asc
X
XXXXXXXXX
X
AMSR2 - very highADEOS-210:30 desc
X
X
AMSR-32 - very highGOSAT-GW13:30 ascXXXXXXXX
AMSR-E Important noteNo2 - very highAqua13:30 asc
X
XXXXXXXX
X
AMSR2No2 - very highGCOM-W13:30 asc
X
XXXXXXXXX
CIMR2 - very highCIMR06:00 descXXXXXXXX
MTVZA-GY-MP2 - very highMeteor-MP N115:30 ascXXXXXXXX
MTVZA-GY-MP2 - very highMeteor-MP N209:30 descXXXXXXXX
MTVZA-OK (MW)2 - very highSICH-1M82.5 °
X
X
X
MWRI (HY-2)2 - very highHY-2B06:00 desc
X
XXXXX
MWRI (HY-2)2 - very highHY-2A06:00 desc
X
XXXX
X
SMMR2 - very highNimbus-712:00 desc
X
XXXXXXXXXXXXXXX
X
SMMR2 - very highSeaSat108 °
X
WindSat Important noteNo2 - very highCoriolis Important note06:10 desc
X
XXXXXXXXXXXXXXXXXX
Delta-2D3 - highOkean-O-182.5 °
X
X
SHF3 - highMeteor-P181.2 °
X
X
X
SHF3 - highMeteor-P281.2 °
X
X
X
SHF3 - highMeteor-P310:15 asc
X
X
X
SHF3 - highMeteor-P610:15 asc
X
X
X
GMI (core)No3 - highGPM Core Observatory65 °
X
XXXXXXX
MTVZA-GY Important note3 - highMeteor-M N109:30 desc
X
XXXX
X
MTVZA-GY Important note3 - highMeteor-M N209:30 asc
X
XX
X
MTVZA-GY3 - highMeteor-M N2-609:00 ascXXXXXX
MTVZA-GY3 - highMeteor-M N2-309:00 descXXXXXX
MTVZA-GY3 - highMeteor-M N2-415:00 ascXXXXXX
MTVZA-GY3 - highMeteor-M N2-515:00 descXXXXXX
MTVZA-GY3 - highMeteor-M N2-115:09 asc
X
MTVZA-GY Important note3 - highMeteor-M N2-215:00 asc
X
XXXXX
MWRI3 - highFY-3G50 °XXXXXX
MWRI3 - highFY-3J50 °XXXXXX
MWRI Important note3 - highFY-3A09:05 desc
X
MWRI3 - highFY-3B14:45 asc
X
XXXXXXXXX
X
MWRI Important note3 - highFY-3C09:07 desc
X
XXXXXX
X
MWRIYes3 - highFY-3D13:29 asc
X
XXXXX
MWRI3 - highFY-3H14:00 ascXXXXXX
MWRI3 - highFY-3F10:00 descXXXXXX
TMI 3 - highTRMM35 °
X
XXXXXXXXXXXXXXXXX
X
COWVR3 - highISS COWVR51.6 °XXXX
MSMR4 - fairOceanSat-1 (IRS-P4)12:00 desc
X
XXXXXXXXXX
X
GNOS-24 - fairFY-3G50 °XXXXXX
GNOS-24 - fairFY-3J50 °XXXXXX
GNOS-24 - fairFY-3E05:30 descXXXXXX
GNOS-24 - fairFY-3H14:00 ascXXXXXX
GNOS-24 - fairFY-3F10:00 descXXXXXX
GNOS-24 - fairFY-3I05:30 descXXXXXX
MADRAS Important note4 - fairMegha-Tropiques20 °
X
X
X
MTVZA4 - fairMeteor-3M09:15 asc
X
XXXX
X
MWI (MetOp-SG)4 - fairMetop-SG-B109:30 descXXXXXXXX
MWI (MetOp-SG)4 - fairMetop-SG-B209:30 descXXXXXXXX
MWI (MetOp-SG)4 - fairMetop-SG-B309:30 descXXXXXXXX
SSM/I4 - fairDMSP-F0806:10 desc
X
XXXXXXXXXXXXXXXXXX
X
SSM/I4 - fairDMSP-F1007:30 desc
X
XXXXXX
X
SSM/I4 - fairDMSP-F1105:00 desc
X
XXXXXXXX
X
SSM/I4 - fairDMSP-F1203:35 desc
X
XXXXXXXXXXXXX
X
SSM/I4 - fairDMSP-F1305:51 desc
X
XXXXXXXXXXXXXXXXXXX
X
SSM/I Important noteNo4 - fairDMSP-F1417:00 asc
X
XXXXXXXXXXXXXXXXXX
SSM/I Important noteNo4 - fairDMSP-F15 Important note14:50 asc
X
XXXXXXXXXXXXXXXXXXXXXX
SSMIS Important noteNo4 - fairDMSP-F1606:20 asc
X
XXXXXXXXXXXXXXXX
SSMIS Important noteNo4 - fairDMSP-F1706:40 desc
X
XXXXXXXXXXXXXXX
SSMIS Important noteNo4 - fairDMSP-F1804:50 desc
X
XXXXXXXXXXXX
SSMISNo4 - fairDMSP-F1906:36 desc
X
X
X
DDMI4 - fairCYGNSS (8 sats)35 °
X
XXXXX
KaRIN4 - fairSWOT78 °XXXX
SHIOSAI4 - fairCOMPIRA51 °XXXXXX
SWIM4 - fairCFOSAT07:00 desc
X
XXXX
SWIM4 - fairCFOSAT follow-on07:00 descXXXXXX
ESMR (Nimbus-6)5 - marginalNimbus-612:00 desc
X
XXXXXXX
X
MIVZA5 - marginalMeteor-3M09:15 asc
X
XXXX
X
ALT (HY-2A)5 - marginalHY-2B06:00 desc
X
XXXXX
ALT (HY-2A)5 - marginalHY-2C66 °
X
XXXXX
ALT (HY-2A)5 - marginalHY-2D66 °XXXXXX
ALT (HY-2A)5 - marginalHY-2E06:00 descXXXXXX
ALT (HY-2A)5 - marginalHY-2F66 °XXXXXX
ALT (HY-2A)5 - marginalHY-2G66 °XXXXXX
ALT (HY-2A)5 - marginalHY-2A06:00 desc
X
XXXXXXXXXX
ALT (SeaSat)5 - marginalSeaSat108 °
X
AltiKa5 - marginalSARAL05:56 asc
X
XXXXXXXX
Altimeter5 - marginalSWOT78 °XXXX
Altimeter (COMPIRA)5 - marginalCOMPIRA51 °XXXXXX
GFO-RA5 - marginalGFO108 °
X
XXXXXXXXX
X
GRA5 - marginalGEOSat108 °
X
XXXX
X
NRA5 - marginalTOPEX-Poseidon66 °
X
XXXXXXXXXXXX
X
Poseidon-25 - marginalJASON-166 °
X
XXXXXXXXXXX
X
Poseidon-35 - marginalJASON-266 °
X
XXXXXXXXXX
X
Poseidon-3BYes5 - marginalJASON-366 °
X
XXXXX
Poseidon-45 - marginalSentinel-6A66 °
X
XXXXXXX
Poseidon-45 - marginalSentinel-6B66 °XXXXXXXX
RA5 - marginalERS-110:30 desc
X
XXXXXXXX
X
RA5 - marginalERS-210:30 desc
X
XXXXXXXXXXXXXXX
X
RA-25 - marginalEnvisat10:00 desc
X
XXXXXXXXX
X
SIRAL5 - marginalCryoSat92 °
X
SIRALNo5 - marginalCryoSat-292 °
X
XXXXXXXXXXX
SRALYes5 - marginalSentinel-3B10:00 desc
X
XXXXXXX
SRAL5 - marginalSentinel-3C10:00 descXXXXXXXX
SRAL5 - marginalSentinel-3D10:00 descXXXXXXXX
SRALYes5 - marginalSentinel-3A10:00 desc
X
XXXXXXX
SSALT5 - marginalTOPEX-Poseidon66 °
X
XXXXXXXXXXXX
X
All instruments for measuring Wind speed (near surface)
Instruments Relevance Operational limitations
WindRAD1 - primary
AMI-SCAT1 - primary
ASCAT1 - primary
SCA (Scatterometer)1 - primary
NSCAT1 - primary
OSCAT1 - primary
RapidScat1 - primary
SASS1 - primary
SCAT (CFOSAT)1 - primary
SCAT (HY-2A)1 - primary
SCAT (Meteor-M N3)1 - primary
SeaWinds1 - primary
AMSR2 - very high
AMSR-32 - very high
AMSR-E2 - very high
AMSR22 - very high
CIMR2 - very high
MTVZA-GY-MP2 - very high
MTVZA-OK (MW)2 - very high
MWRI (HY-2)2 - very high
SMMR2 - very high
WindSat2 - very high
Delta-2D3 - high
SHF3 - high
GMI (constellation)3 - high
GMI (core)3 - high
MTVZA-GY3 - high
MWRI3 - high
TMI 3 - high
COWVR3 - high
MSMR4 - fair
GNOS-24 - fair
MADRAS4 - fair
MTVZA4 - fair
MWI (MetOp-SG)4 - fair
SSM/I4 - fair
SSMIS4 - fair
DDMI4 - fair
KaRIN4 - fair
SHIOSAI4 - fair
SWIM4 - fair
ESMR (Nimbus-6)5 - marginal
MIVZA5 - marginal
ALT (HY-2A)5 - marginal
ALT (SeaSat)5 - marginal
AltiKa5 - marginal
Altimeter5 - marginal
Altimeter (COMPIRA)5 - marginal
GFO-RA5 - marginal
GRA5 - marginal
NRA5 - marginal
Poseidon-25 - marginal
Poseidon-35 - marginal
Poseidon-3B5 - marginal
Poseidon-45 - marginal
RA5 - marginal
RA-25 - marginal
SIRAL5 - marginal
SRAL5 - marginal
SSALT5 - marginal