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

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.
Measurement timeline for Snow status (wet/dry)

Definition: Binary product (dry or melting/thawing) expressing the presence of liquid water in a snow layer- Accuracy expressed as Hit Rate [ HR ] and False Alarm Rate [ FAR ].

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

Found 132 results

Instrument NRT? Relevance Satellite Orbit
1972
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AMSR2 - very highADEOS-210:30 desc
X
X
AMSR-2No2 - very highGCOM-W113:30 asc
X
XXXXX
AMSR-22 - very highGCOM-W213:30 ascXXXXXX
AMSR-22 - very highGCOM-W313:30 ascXXXXXX
AMSR-E Important noteNo2 - very highAqua13:30 asc
X
XXXXXXXX
X
GMI (core)No2 - very highGPM Core Observatory65 °
X
XXX
TMI 2 - very highTRMM35 °
X
XXXXXXXXXXXXXXXXX
X
WindRAD2 - very highFY-3E06:00 descXXXXXX
WindRAD2 - very highFY-3H06:00 descXXXXXXXX
MADRAS Important note3 - highMegha-Tropiques20 °
X
X
X
MTVZA3 - highMeteor-3M09:15 asc
X
XXXX
X
MTVZA-GY Important note3 - highMeteor-M N109:30 desc
X
XXXX
X
MTVZA-GY Important note3 - highMeteor-M N209:10 desc
X
XX
X
MTVZA-GY3 - highMeteor-M N2-115:09 asc
X
XXXXX
MTVZA-GY3 - highMeteor-M N2-209:00 descXXXXXX
MTVZA-GY3 - highMeteor-M N2-315:09 descXXXXXX
MTVZA-GY3 - highMeteor-M N2-409:00 descXXXXXX
MTVZA-GY3 - highMeteor-M N2-515:00 descXXXXXX
MTVZA-GY3 - high Meteor-M N2-609:00 XXXXXX
MTVZA-GY-MP3 - highMeteor-MP N115:30 ascXXXXXXXX
MTVZA-GY-MP3 - highMeteor-MP N209:30 descXXXXXXXX
MTVZA-OK (MW)3 - highSICH-1M82.5 °
X
X
X
MWI (MetOp-SG)3 - highMetop-SG-B109:30 descXXXXXXXX
MWI (MetOp-SG)3 - highMetop-SG-B209:30 descXXXXXXXX
MWI (MetOp-SG)3 - highMetop-SG-B309:30 descXXXXXXXX
MWRI Important note3 - highFY-3A09:05 desc
X
MWRIYes3 - highFY-3B14:45 asc
X
XXXXXXX
MWRIYes3 - highFY-3C10:15 desc
X
XXXXX
MWRI3 - highFY-3D14:00 asc
X
XXXXX
MWRI3 - highFY-3F10:00 descXXXXXX
MWRI3 - highFY-3G14:00 ascXXXXXX
MWRI (FY-3RM)3 - highFY-3RM-1XXXXXX
MWRI (FY-3RM)3 - highFY-3RM-2XXXXXX
SSM/I3 - highDMSP-F0806:10 desc
X
XXXXXXXXXXXXXXXXXX
X
SSM/I3 - highDMSP-F1007:30 desc
X
XXXXXX
X
SSM/I3 - highDMSP-F1105:00 desc
X
XXXXXXXX
X
SSM/I3 - highDMSP-F1203:35 desc
X
XXXXXXXXXXXXX
X
SSM/I3 - highDMSP-F1305:51 desc
X
XXXXXXXXXXXXXXXXXXX
X
SSM/I Important noteNo3 - highDMSP-F14 Important note16:45 asc
X
XXXXXXXXXXXXXXXXXXX
SSM/I Important noteNo3 - highDMSP-F15 Important note14:36 asc
X
XXXXXXXXXXXXXXXXXX
SSMIS Important noteNo3 - highDMSP-F16 Important note15:50 asc
X
XXXXXXXXXXXXXX
SSMIS Important noteNo3 - highDMSP-F1706:29 desc
X
XXXXXXXXXXX
SSMIS Important noteNo3 - highDMSP-F1806:28 desc
X
XXXXXXXX
SSMISNo3 - highDMSP-F1906:36 desc
X
X
X
SSMIS3 - highDMSP-S2005:30 descXXXXXX
WindSat Important noteNo3 - highCoriolis06:00 desc
X
XXXXXXXXXXXXXX
NSCAT3 - highADEOS10:30 desc
X
X
OSCAT Important note3 - highOceanSat-212:00 desc
X
XXXX
X
OSCAT3 - highOceanSat-312:00 descXXXXXX
OSCAT3 - highScatSat-108:30 desc
X
XXXXX
OSCAT3 - highOceanSat-3A12:00 descXXXXXX
RapidScat3 - highISS RapidScat51.6 °
X
X
X
SASS3 - highSeaSat108 °
X
SCAT (CFOSAT)3 - highCFOSAT07:00 descXXXXX
SCAT (CFOSAT)3 - highCFOSAT follow-on07:00 descXXXXXX
SCAT (HY-2A)3 - highHY-2A06:00 desc
X
XXXXXX
SCAT (HY-2A)3 - highHY-2B06:00 descXXXXXX
SCAT (HY-2A)3 - highHY-2C66 °XXXXXX
SCAT (HY-2A)3 - highHY-2D66 °XXXXXX
SCAT (HY-2A)3 - highHY-2E06:00 descXXXXXX
SCAT (HY-2A)3 - highHY-2F66 °XXXXXX
SCAT (HY-2A)3 - highHY-2G66 °XXXXXX
SCAT (Meteor-M N3)3 - highMeteor-M N312:00 ascXXXXXX
SeaWinds3 - highADEOS-210:30 desc
X
X
SeaWinds3 - highQuikSCAT06:00 asc
X
XXXXXXXXX
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 N4TBDXXXX
COSI3 - highKOMPSAT-506:00 asc
X
XXXXX
HRWS-SAR3 - highHRWS-SAR06:00 descXXXXXXX
MeteoSAR3 - highMeteor-M N312:00 ascXXXXXX
MeteoSAR3 - highMeteor-M N2-315:09 descXXXXXX
MeteoSAR3 - highMeteor-M N2-409:00 descXXXXXX
MeteoSAR3 - highMeteor-M N2-515:00 descXXXXXX
MeteoSAR3 - high Meteor-M N2-609:00 XXXXXX
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-O1-582.5 °
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
XXXXXXXXXX
SAR-2000No3 - highCSK-206:00 asc
X
XXXXXXXXXX
SAR-2000No3 - highCSK-306:00 asc
X
XXXXXXXXX
SAR-2000No3 - highCSK-406:00 asc
X
XXXXXXX
SAR-2000 S.G.3 - highCSG-106:00 ascXXXXXXXX
SAR-2000 S.G.3 - highCSG-206:00 ascXXXXXXXX
SAR-X3 - highTanDEM-X06:00 desc
X
XXXXXXX
SAR-X3 - highTerraSAR-X06:00 desc
X
XXXXXXXXXX
SAR-X3 - highTSX-NG06:00 descXXXXXXXX
SAR-X (Paz (SEOSAR))3 - highSEOSAR/Paz06:00 asc
X
XXXXX
SAR-X (RISAT-2)3 - highRISAT-241 °
X
XXXXXXXX
Severjanin-M Important note3 - highMeteor-M N109:30 desc
X
XXX
Severjanin-M Important note3 - highMeteor-M N209:10 desc
X
XXXXX
W-SAR3 - highHY-3A06:00 descXXXXXXXXX
W-SAR3 - highHY-3B06:00 descXXXXXXXXX
Delta-2D4 - fairOkean-O-182.5 °
X
X
MWI (HY-2A)4 - fairHY-2A06:00 desc
X
XXXX
X
MWI (HY-2A)4 - fairHY-2B06:00 descXXXXXX
SHF4 - fairMeteor-P181.2 °
X
X
X
SHF4 - fairMeteor-P281.2 °
X
X
X
SHF4 - fairMeteor-P310:15 asc
X
X
X
SHF4 - fairMeteor-P610:15 asc
X
X
X
SMMR4 - fairNimbus-712:00 desc
X
XXXXXXXXXXXXXXX
X
SMMR4 - fairSeaSat108 °
X
AMI-SCAT4 - fairERS-110:30 desc
X
XXXXXXXX
X
AMI-SCAT4 - fairERS-210:30 desc
X
XXXXXXXXXXXXXXX
X
ASCATYes4 - fairMetop-A09:30 desc
X
XXXXXXXXXXX
ASCATYes4 - fairMetop-B09:30 desc
X
XXXXXX
ASCAT4 - fairMetop-C09:30 descXXXXXXX
SCA (Scatterometer)4 - fairMetop-SG-B109:30 descXXXXXXXX
SCA (Scatterometer)4 - fairMetop-SG-B209:30 descXXXXXXXX
SCA (Scatterometer)4 - fairMetop-SG-B309:30 descXXXXXXXX
AMI-SAR4 - fairERS-110:30 desc
X
XXXXXXXX
X
AMI-SAR4 - fairERS-210:30 desc
X
XXXXXXXXXXXXXXX
X
ASAR4 - fairEnvisat10:00 desc
X
XXXXXXXXX
X
SAR (RadarSat-1)4 - fairRadarSat-106:00 desc
X
XXXXXXXXXXXXXXXXX
X
SAR (RadarSat-1)No4 - fairRadarSat-206:00 desc
X
XXXXXXXXXX
SAR RCM4 - fairRCM-106:00 descXXXXXXXX
SAR RCM4 - fairRCM-206:00 descXXXXXXXX
SAR RCM4 - fairRCM-306:00 descXXXXXXXX
SAR-C (GF-3)4 - fairGF-306:00 desc
X
XXXXXXXX
SAR-C (RISAT)4 - fairRISAT-106:00 desc
X
XXXXX
SAR-C (RISAT)4 - fairRISAT-1A06:00 descXXXXX
SAR-C (Sentinel-1)No4 - fairSentinel-1A06:00 desc
X
XXXXXXX
SAR-C (Sentinel-1)4 - fairSentinel-1B06:00 desc
X
XXXXXXX
All instruments for measuring Snow status (wet/dry)
Instruments Relevance Operational limitations
AMSR2 - very highCoarse spatial resolution..
AMSR-22 - very highCoarse spatial resolution..
AMSR-E2 - very highCoarse spatial resolution..
GMI (core)2 - very highCoarse spatial resolution..
MIS2 - very highCoarse spatial resolution..
TMI 2 - very highCoarse spatial resolution..
WindRAD2 - very highCoarse spatial resolution.. Thick snow only..
SAR-X/Ku2 - very highInfrequent coverage..
GMI (constellation)3 - highCoarse spatial resolution..
MADRAS3 - highCoarse spatial resolution..
MTVZA3 - highCoarse spatial resolution..
MTVZA-GY3 - highCoarse spatial resolution..
MTVZA-GY-MP3 - highCoarse spatial resolution..
MTVZA-OK (MW)3 - highCoarse spatial resolution..
MWI (MetOp-SG)3 - highCoarse spatial resolution..
MWRI3 - highCoarse spatial resolution..
MWRI (FY-3RM)3 - highCoarse spatial resolution..
SSM/I3 - highCoarse spatial resolution..
SSMIS3 - highCoarse spatial resolution..
WindSat3 - highCoarse spatial resolution..
NSCAT3 - highCoarse spatial resolution.. Thick snow only..
OSCAT3 - highCoarse spatial resolution.. Thick snow only..
RapidScat3 - highCoarse spatial resolution.. Thick snow only..
SASS3 - highCoarse spatial resolution.. Thick snow only..
SCAT (CFOSAT)3 - highCoarse spatial resolution.. Thick snow only..
SCAT (HY-2A)3 - highCoarse spatial resolution.. Thick snow only..
SCAT (Meteor-M N3)3 - highCoarse spatial resolution.. Thick snow only..
SeaWinds3 - highCoarse spatial resolution.. Thick snow only..
BRLK “Briz”3 - highThick snow only.. Infrequent coverage..
COSI3 - highThick snow only.. Infrequent coverage..
HRWS-SAR3 - highThick snow only.. Infrequent coverage..
MeteoSAR3 - highThick snow only.. Infrequent coverage..
RLSBO3 - highThick snow only.. Infrequent coverage..
SAR-20003 - highThick snow only.. Infrequent coverage..
SAR-2000 S.G.3 - highThick snow only.. Infrequent coverage..
SAR-X3 - highThick snow only.. Infrequent coverage..
SAR-X (Paz (SEOSAR))3 - highThick snow only.. Infrequent coverage..
SAR-X (RISAT-2)3 - highThick snow only.. Infrequent coverage..
Severjanin-M3 - highThick snow only.. Infrequent coverage..
W-SAR3 - highThick snow only.. Infrequent coverage..
Delta-2D4 - fairCoarse spatial resolution..
MWI (HY-2A)4 - fairCoarse spatial resolution..
SHF4 - fairCoarse spatial resolution..
SMMR4 - fairCoarse spatial resolution..
AMI-SCAT4 - fairCoarse spatial resolution.. Thick snow only..
ASCAT4 - fairCoarse spatial resolution.. Thick snow only..
SCA (Scatterometer)4 - fairCoarse spatial resolution.. Thick snow only..
AMI-SAR4 - fairThick snow only.. Infrequent coverage..
ASAR4 - fairThick snow only.. Infrequent coverage..
SAR (RadarSat-1)4 - fairThick snow only.. Infrequent coverage..
SAR RCM4 - fairThick snow only.. Infrequent coverage..
SAR-C (GF-3)4 - fairThick snow only.. Infrequent coverage..
SAR-C (RISAT)4 - fairThick snow only.. Infrequent coverage..
SAR-C (Sentinel-1)4 - fairThick snow only.. Infrequent coverage..