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 spatial resolution
  • the exploited technology (passive MW, radar scatterometer, SAR).

 

RATING CRITERIA:

1

  • High-spatial-resolution MW radiometer with frequencies ~19, ~37 and possibly ~90 GHz

2

  • MW radiometer with frequencies ~19, ~37 and possibly ~90 GHz

3

  • X- and Ku-band SAR, or X-band or C-band SAR

4

  • L- and S-band SAR, or L- or S-band SAR

5

  • Radar scatterometer in Ku- and C-band, or Ku- or C- band
Measurement timeline for Snow water equivalent

Definition: Vertical depth of the water that would be obtained by melting a snow layer. Linked to snow depth through the density of the snow layer.

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

Found 158 results

This table has a large number of results.
Hide inactive instruments
Instrument NRT? Relevance Satellite Orbit
1972
1973
1974
1975
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
2044
2045
2046
2047
AMSR1 - primaryADEOS-210:30 desc
X
X
AMSR-31 - primaryGOSAT-GW13:30 ascXXXXXXXX
AMSR-E Important noteNo1 - primaryAqua13:30 asc
X
XXXXXXXX
X
AMSR2No1 - primaryGCOM-W13:30 asc
X
XXXXXXXXX
GMI (core)No1 - primaryGPM Core Observatory65 °
X
XXXXXXXXXXXX
TMI 1 - primaryTRMM35 °
X
XXXXXXXXXXXXXXXXX
X
CIMR1 - primaryCIMR06:00 descXXXXXXXX
WindSat Important noteNo1 - primaryCoriolis Important note06:10 desc
X
XXXXXXXXXXXXXXXXXX
MADRAS Important note2 - very highMegha-Tropiques20 °
X
X
X
MTVZA2 - very highMeteor-3M09:15 asc
X
XXXX
X
MTVZA-GY Important note2 - very highMeteor-M N109:30 desc
X
XXXX
X
MTVZA-GY Important note2 - very highMeteor-M N209:30 asc
X
XX
X
MTVZA-GY2 - very highMeteor-M N2-115:09 asc
X
MTVZA-GY Important note2 - very highMeteor-M N2-215:00 asc
X
XXXXX
MTVZA-GY2 - very highMeteor-M N2-309:00 descXXXXXX
MTVZA-GY2 - very highMeteor-M N2-415:00 ascXXXXXX
MTVZA-GY2 - very highMeteor-M N2-515:00 descXXXXXX
MTVZA-GY2 - very highMeteor-M N2-609:00 ascXXXXXX
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
MWI (MetOp-SG)2 - very highMetop-SG-B109:30 descXXXXXXXX
MWI (MetOp-SG)2 - very highMetop-SG-B209:30 descXXXXXXXX
MWI (MetOp-SG)2 - very highMetop-SG-B309:30 descXXXXXXXX
MWRI Important note2 - very highFY-3A09:05 desc
X
MWRI2 - very highFY-3B14:45 asc
X
XXXXXXXXX
X
MWRI Important note2 - very highFY-3C09:07 desc
X
XXXXXX
X
MWRIYes2 - very highFY-3D13:29 asc
X
XXXXX
MWRI2 - very highFY-3H14:00 ascXXXXXX
MWRI2 - very highFY-3F10:00 descXXXXXX
MWRI2 - very highFY-3G50 °XXXXXX
MWRI2 - very highFY-3J50 °XXXXXX
SSM/I2 - very highDMSP-F0806:10 desc
X
XXXXXXXXXXXXXXXXXX
X
SSM/I2 - very highDMSP-F1007:30 desc
X
XXXXXX
X
SSM/I2 - very highDMSP-F1105:00 desc
X
XXXXXXXX
X
SSM/I2 - very highDMSP-F1203:35 desc
X
XXXXXXXXXXXXX
X
SSM/I2 - very highDMSP-F1305:51 desc
X
XXXXXXXXXXXXXXXXXXX
X
SSM/I Important noteNo2 - very highDMSP-F1417:00 asc
X
XXXXXXXXXXXXXXXXXX
SSM/I Important noteNo2 - very highDMSP-F15 Important note14:50 asc
X
XXXXXXXXXXXXXXXXXXXXXX
SSMIS Important noteNo2 - very highDMSP-F1606:20 asc
X
XXXXXXXXXXXXXXXX
SSMIS Important noteNo2 - very highDMSP-F1706:40 desc
X
XXXXXXXXXXXXXXX
SSMIS Important noteNo2 - very highDMSP-F1804:50 desc
X
XXXXXXXXXXXX
SSMISNo2 - very highDMSP-F1906:36 desc
X
X
X
COWVR2 - very highISS COWVR51.6 °XXXX
Delta-2D2 - very highOkean-O-182.5 °
X
X
MWRI (HY-2)2 - very highHY-2A06:00 desc
X
XXXX
X
MWRI (HY-2)2 - very highHY-2B06:00 desc
X
XXXXX
SHF2 - very highMeteor-P181.2 °
X
X
X
SHF2 - very highMeteor-P281.2 °
X
X
X
SHF2 - very highMeteor-P310:15 asc
X
X
X
SHF2 - very highMeteor-P610:15 asc
X
X
X
SMMR2 - very highNimbus-712:00 desc
X
XXXXXXXXXXXXXXX
X
SMMR2 - very highSeaSat108 °
X
BRLK “Briz”3 - highMeteor-MP N115:30 ascXXXXXXXX
BRLK “Briz”3 - highMeteor-MP N209:30 descXXXXXXXX
BRLK “Briz”3 - highObzor-R N1TBDXXXXXX
BRLK “Briz”3 - highObzor-R N2TBDXXXXXX
BRLK “Briz”3 - highObzor-R N3TBDXXXXXX
BRLK “Briz”3 - highObzor-R N4TBDXXXXXX
Capella SAR3 - highCapella10:30 desc
X
XXXXXXXXXXXXXXXXXXXXXX
COSI3 - highKOMPSAT-506:00 asc
X
XXXXXXXX
COSI3 - highKOMPSAT-606:00 ascXXXXX
CSG-SAR3 - highCSG-106:00 asc
X
XXXXXXX
CSG-SAR3 - highCSG-206:00 ascXXXXXXXX
HRWS-SAR3 - highHRWS-SAR06:00 descXXXXXXXXX
ICEYE SAR3 - highICEYETBD
X
XXXXXXXXXXXXXXXXXXXXXXXXXXXX
MeteoSAR3 - highMeteor-M N2-309:00 descXXXXXX
MeteoSAR3 - highMeteor-M N2-415:00 ascXXXXXX
MeteoSAR3 - highMeteor-M N2-515:00 descXXXXXX
MeteoSAR3 - highMeteor-M N2-609:00 ascXXXXXX
RLSBO3 - highOkean-O-182.5 °
X
X
RLSBO3 - highOkean-O1-182.5 °
X
X
X
RLSBO3 - highOkean-O1-282.5 °
X
X
X
RLSBO3 - highOkean-O1-382.5 °
X
X
X
RLSBO3 - highOkean-O1-482.5 °
X
RLSBO3 - highOkean-O1-582.5 °
X
X
X
RLSBO3 - highOkean-O1-682.5 °
X
X
X
RLSBO3 - highOkean-O1-782.5 °
X
X
X
RLSBO3 - highSICH-182.5 °
X
XXXXX
X
RLSBO3 - highSICH-1M82.5 °
X
X
X
SAR-2000No3 - highCSK-106:00 asc
X
XXXXXXXXXXXXXX
SAR-2000No3 - highCSK-206:00 asc
X
XXXXXXXXXXXXXX
SAR-2000No3 - highCSK-306:00 asc
X
XXXXXXXXXXXXX
SAR-2000No3 - highCSK-406:00 asc
X
XXXXXXXXXXX
SAR-X3 - highTanDEM-X06:00 desc
X
XXXXXXXXXXXXXXXX
SAR-X3 - highTerraSAR-X06:00 desc
X
XXXXXXXXXXXXXXXXX
SAR-X (Paz (SEOSAR))3 - highSEOSAR/Paz06:00 asc
X
XXXXX
SAR-X (RISAT-2) Important note3 - highRISAT-241 °
X
XXXXXXXXXXXX
SAR-X (RISAT-2) Important note3 - highRISAT-2B37 °
X
XXXXX
SAR-X (RISAT-2) Important note3 - highRISAT-2BR137 °
X
XXXXX
SAR-X (RISAT-2) Important note3 - highEOS-0137 °
X
XXXXX
Severjanin-M Important note3 - highMeteor-M N109:30 desc
X
XXX
Severjanin-M Important note3 - highMeteor-M N209:30 asc
X
XXXXXXX
Severjanin-M3 - highMeteor-M N2-115:09 asc
X
W-SAR3 - highHY-3A06:00 descXXXXXXXXX
W-SAR3 - highHY-3B06:00 descXXXXXXXXX
XSAR3 - highASNARO-206:00 desc
X
XXXXX
AMI-SAR3 - highERS-110:30 desc
X
XXXXXXXX
X
AMI-SAR3 - highERS-210:30 desc
X
XXXXXXXXXXXXXXX
X
ASAR3 - highEnvisat10:00 desc
X
XXXXXXXXX
X
SAR (RadarSat-1)3 - highRadarSat-106:00 desc
X
XXXXXXXXXXXXXXXXX
X
SAR (RadarSat-1)No3 - highRadarSat-206:00 desc
X
XXXXXXXXXXXXXX
SAR RCM3 - highRCM-106:00 desc
X
XXXXXXX
SAR RCM3 - highRCM-206:00 desc
X
XXXXXXX
SAR RCM Important note3 - highRCM-306:00 desc
X
XXXXXXX
SAR-C (GF-3)3 - highGF-306:00 desc
X
XXXXXXXX
SAR-C (GF-3)3 - highGF-1206:00 desc
X
XXXXXXXX
SAR-C (GF-3)3 - highGF-12-0206:00 desc
X
XXXXXXX
SAR-C (RISAT)3 - highRISAT-106:00 desc
X
XXXX
X
SAR-C (RISAT)3 - highRISAT-1A06:00 desc
X
XXXXX
SAR-C (Sentinel-1)No3 - highSentinel-1A06:00 desc
X
XXXXXXX
SAR-C (Sentinel-1)3 - highSentinel-1B06:00 desc
X
XXXXXXX
SAR-C (Sentinel-1)No3 - highSentinel-1C06:00 descXXXXXXXX
SAR-C (Sentinel-1)No3 - highSentinel-1D06:00 descXXXXXXXX
SAR-Travers4 - fairResurs-O1-110:15 asc
X
X
S-SAR4 - fairNovaSAR-S10:30 asc
X
XXXXXXX
SAR-10 Important note4 - fairKondor-E174.75 °
X
XXXXX
SAR-104 - fairKondor-E74.75 °
X
X
SAR-S Important note4 - fairHJ-1C Important note06:00 desc
X
XXXXXXXXX
SAR-S (NISAR) 4 - fairNI-SAR06:00 descXXXX
L-SAR4 - fairTandem-L06:00 descXXXXXXXXXXXXX
PALSAR4 - fairALOS10:30 desc
X
XXXX
X
PALSAR-2No4 - fairALOS-212:00 desc
X
XXXXXXX
PALSAR-34 - fairALOS-412:00 descXXXXXXXX
SAR4 - fairSeaSat108 °
X
SAR (JERS)4 - fairJERS10:45 desc
X
XXXXX
X
SAR-L4 - fairSAOCOM-1A06:00 asc
X
XXXXX
SAR-L4 - fairSAOCOM-1B06:00 asc
X
XXXXX
SAR-L4 - fairSAOCOM-2A06:00 ascXXXXXX
SAR-L4 - fairSAOCOM-2B06:00 ascXXXXXX
SAR-L (NISAR)4 - fairNI-SAR06:00 descXXXX
WindRAD5 - marginalFY-3E05:30 descXXXXXX
WindRAD5 - marginalFY-3I05:30 descXXXXXX
NSCAT5 - marginalADEOS10:30 desc
X
X
OSCAT Important note5 - marginalOceanSat-211:53 desc
X
XXXX
X
OSCAT5 - marginalOceanSat-312:00 desc
X
XXXXXXX
OSCATNo5 - marginalScatSat-108:45 desc
X
XXXX
X
RapidScat5 - marginalISS RapidScat51.6 °
X
X
X
SASS5 - marginalSeaSat108 °
X
SCAT (CFOSAT)5 - marginalCFOSAT07:00 desc
X
XXXX
SCAT (CFOSAT)5 - marginalCFOSAT follow-on07:00 descXXXXXX
SCAT (incl)5 - marginalHY-2C66 °
X
XXXXX
SCAT (incl)5 - marginalHY-2D66 °
X
XXXXX
SCAT (incl)5 - marginalHY-2F66 °XXXXXX
SCAT (incl)5 - marginalHY-2G66 °XXXXXX
SCAT (sso)5 - marginalHY-2A06:00 desc
X
XXXXXXXXXX
SCAT (sso)5 - marginalHY-2B06:00 desc
X
XXXXX
SCAT (sso)5 - marginalHY-2E06:00 descXXXXXX
SeaWinds5 - marginalADEOS-210:30 desc
X
X
SeaWinds5 - marginalQuikSCAT06:00 asc
X
XXXXXXXXX
X
AMI-SCAT5 - marginalERS-110:30 desc
X
XXXXXXXX
X
AMI-SCAT5 - marginalERS-210:30 desc
X
XXXXXXXXXXXXXXX
X
ASCATYes5 - marginalMetop-A08:46 desc
X
XXXXXXXXXXXXXXX
ASCATYes5 - marginalMetop-B09:30 desc
X
XXXXXXXXXXXX
ASCAT5 - marginalMetop-C09:30 desc
X
XXXXXXXXX
SCA (Scatterometer)5 - marginalMetop-SG-B109:30 descXXXXXXXX
SCA (Scatterometer)5 - marginalMetop-SG-B209:30 descXXXXXXXX
SCA (Scatterometer)5 - marginalMetop-SG-B309:30 descXXXXXXXX
All instruments for measuring Snow water equivalent
Instruments Relevance Operational limitations
AMSR1 - primary
AMSR-31 - primary
AMSR-E1 - primary
AMSR21 - primary
GMI (core)1 - primary
TMI 1 - primary
CIMR1 - primary
WindSat1 - primary
GMI (constellation)2 - very high
MADRAS2 - very high
MTVZA2 - very high
MTVZA-GY2 - very high
MTVZA-GY-MP2 - very high
MTVZA-OK (MW)2 - very high
MWI (MetOp-SG)2 - very high
MWRI2 - very high
SSM/I2 - very high
SSMIS2 - very high
COWVR2 - very high
Delta-2D2 - very high
MWRI (HY-2)2 - very high
SHF2 - very high
SMMR2 - very high
SAR-X/Ku3 - high
BRLK “Briz”3 - high
Capella SAR3 - high
COSI3 - high
CSG-SAR3 - high
HRWS-SAR3 - high
ICEYE SAR3 - high
MeteoSAR3 - high
RLSBO3 - high
SAR-20003 - high
SAR-X3 - high
SAR-X (Paz (SEOSAR))3 - high
SAR-X (RISAT-2)3 - high
Severjanin-M3 - high
W-SAR3 - high
XSAR3 - high
AMI-SAR3 - high
ASAR3 - high
SAR (RadarSat-1)3 - high
SAR RCM3 - high
SAR-C (GF-3)3 - high
SAR-C (RISAT)3 - high
SAR-C (Sentinel-1)3 - high
SAR-Travers4 - fair
S-SAR4 - fair
SAR-104 - fair
SAR-S4 - fair
SAR-S (NISAR) 4 - fair
InSAR4 - fair
L-SAR4 - fair
PALSAR4 - fair
PALSAR-24 - fair
PALSAR-34 - fair
SAR4 - fair
SAR (JERS)4 - fair
SAR-L4 - fair
SAR-L (NISAR)4 - fair
WindRAD5 - marginal
NSCAT5 - marginal
OSCAT5 - marginal
RapidScat5 - marginal
SASS5 - marginal
SCAT (CFOSAT)5 - marginal
SCAT (incl)5 - marginal
SCAT (Meteor-M N3)5 - marginal
SCAT (sso)5 - marginal
SeaWinds5 - marginal
AMI-SCAT5 - marginal
ASCAT5 - marginal
SCA (Scatterometer)5 - marginal