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 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 147 results

Instrument NRT? Relevance Satellite Orbit
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AMSR1 - primaryADEOS-210:30 desc
X
X
AMSR-2No1 - primaryGCOM-W13:30 asc
X
XXXXXX
AMSR-21 - primaryGOSAT-313:00 descXXXXXX
AMSR-E Important noteNo1 - primaryAqua13:30 asc
X
XXXXXXXX
X
GMI (core)No1 - primaryGPM Core Observatory65 °
X
XXXX
TMI 1 - primaryTRMM35 °
X
XXXXXXXXXXXXXXXXX
X
WindSat Important noteNo1 - primaryCoriolis06:10 desc
X
XXXXXXXXXXXXXXX
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 N2-209:00 descXXXXXX
MTVZA-GY2 - very highMeteor-M N2-315:09 ascXXXXXX
MTVZA-GY2 - very highMeteor-M N2-409:00 descXXXXXX
MTVZA-GY2 - very highMeteor-M N2-515:00 descXXXXXX
MTVZA-GY2 - very high Meteor-M N2-609:00 XXXXXX
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
MWRIYes2 - very highFY-3B13:38 asc
X
XXXXXXXX
MWRIYes2 - very highFY-3C10:15 desc
X
XXXXX
MWRI2 - very highFY-3D14:00 asc
X
XXXXX
MWRI2 - very highFY-3F10:00 descXXXXXX
MWRI2 - very highFY-3G14:00 ascXXXXXX
MWRI (FY-3RM)2 - very highFY-3RM-1XXXXXX
MWRI (FY-3RM)2 - very highFY-3RM-2XXXXXX
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-F1514:50 asc
X
XXXXXXXXXXXXXXXXXXX
SSMIS Important noteNo2 - very highDMSP-F1615:50 asc
X
XXXXXXXXXXXXXXX
SSMIS Important noteNo2 - very highDMSP-F1706:20 desc
X
XXXXXXXXXXXX
SSMIS Important noteNo2 - very highDMSP-F1807:08 desc
X
XXXXXXXXX
SSMISNo2 - very highDMSP-F1906:36 desc
X
X
X
Delta-2D2 - very highOkean-O-182.5 °
X
X
MWI (HY-2A)2 - very highHY-2A Important note06:00 desc
X
XXXX
X
MWI (HY-2A)2 - very highHY-2B06:00 descXXXXXX
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 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 ascXXXXXX
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-1 Important note06:00 asc
X
XXXXXXXXXXX
SAR-2000No3 - highCSK-2 Important note06:00 asc
X
XXXXXXXXXXX
SAR-2000No3 - highCSK-3 Important note06:00 asc
X
XXXXXXXXXX
SAR-2000No3 - highCSK-4 Important note06:00 asc
X
XXXXXXXX
SAR-2000 S.G.3 - highCSG-106:00 asc
X
XXXXXXX
SAR-2000 S.G.3 - highCSG-206:00 ascXXXXXXXX
SAR-X3 - highTanDEM-X06:00 desc
X
XXXXXXXX
SAR-X3 - highTerraSAR-X06:00 desc
X
XXXXXXXXXXX
SAR-X3 - highTSX-NG06:00 descXXXXXXXX
SAR-X (Paz (SEOSAR))3 - highSEOSAR/Paz06:00 asc
X
XXXXX
SAR-X (RISAT-2) Important note3 - highRISAT-241 °
X
XXXXXXXXX
Severjanin-M Important note3 - highMeteor-M N109:30 desc
X
XXX
Severjanin-M Important note3 - highMeteor-M N209:30 asc
X
XXXXX
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
XXXXXXXXXXX
SAR RCM3 - highRCM-106:00 descXXXXXXXX
SAR RCM3 - highRCM-206:00 descXXXXXXXX
SAR RCM3 - highRCM-306:00 descXXXXXXXX
SAR-C (GF-3)3 - highGF-306:00 desc
X
XXXXXXXX
SAR-C (RISAT)3 - highRISAT-106:00 desc
X
XXXX
X
SAR-C (RISAT)3 - highRISAT-1A06:00 descXXXXX
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
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
XXXXXX
SAR-S (NISAR) 4 - fairNI-SAR06:00 descXXXXXX
PALSAR4 - fairALOS10:30 desc
X
XXXX
X
PALSAR-2No4 - fairALOS-212:00 desc
X
XXXXXX
PALSAR-2No4 - 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 ascXXXXXX
SAR-L4 - fairSAOCOM-2A06:00 ascXXXXXX
SAR-L4 - fairSAOCOM-2B06:00 ascXXXXXX
SAR-L (NISAR)4 - fairNI-SAR06:00 descXXXXXX
WindRAD5 - marginalFY-3E06:00 descXXXXXX
WindRAD5 - marginalFY-3H06:00 descXXXXXX
NSCAT5 - marginalADEOS10:30 desc
X
X
OSCAT Important note5 - marginalOceanSat-211:50 desc
X
XXXX
X
OSCAT5 - marginalOceanSat-312:00 descXXXXXX
OSCAT5 - marginalScatSat-108:45 desc
X
XXXXX
OSCAT5 - marginalOceanSat-3A12:00 descXXXXXX
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 (HY-2A)5 - marginalHY-2A Important note06:00 desc
X
XXXXXXX
SCAT (HY-2A)5 - marginalHY-2B06:00 descXXXXXX
SCAT (HY-2A)5 - marginalHY-2C66 °XXXXXX
SCAT (HY-2A)5 - marginalHY-2D66 °XXXXXX
SCAT (HY-2A)5 - marginalHY-2E06:00 descXXXXXX
SCAT (HY-2A)5 - marginalHY-2F66 °XXXXXX
SCAT (HY-2A)5 - marginalHY-2G66 °XXXXXX
SCAT (Meteor-M N3)5 - marginalMeteor-M N312:00 ascXXXXXX
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-A09:30 desc
X
XXXXXXXXXXXX
ASCATYes5 - marginalMetop-B09:30 desc
X
XXXXXX
ASCAT5 - marginalMetop-C09:30 desc
X
XXXXXX
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 - primaryCoarse spatial resolution.. Ground stations network needed..
AMSR-21 - primaryCoarse spatial resolution.. Ground stations network needed..
AMSR-E1 - primaryCoarse spatial resolution.. Ground stations network needed..
GMI (core)1 - primaryCoarse spatial resolution.. Ground stations network needed..
MIS1 - primaryCoarse spatial resolution.. Ground stations network needed..
TMI 1 - primaryCoarse spatial resolution.. Ground stations network needed..
WindSat1 - primaryCoarse spatial resolution.. Ground stations network needed..
GMI (constellation)2 - very highCoarse spatial resolution.. Ground stations network needed..
MADRAS2 - very highCoarse spatial resolution.. Ground stations network needed..
MTVZA2 - very highCoarse spatial resolution.. Ground stations network needed..
MTVZA-GY2 - very highCoarse spatial resolution.. Ground stations network needed..
MTVZA-GY-MP2 - very highCoarse spatial resolution.. Ground stations network needed..
MTVZA-OK (MW)2 - very highCoarse spatial resolution.. Ground stations network needed..
MWI (MetOp-SG)2 - very highCoarse spatial resolution.. Ground stations network needed..
MWRI2 - very highCoarse spatial resolution.. Ground stations network needed..
MWRI (FY-3RM)2 - very highCoarse spatial resolution.. Ground stations network needed..
SSM/I2 - very highCoarse spatial resolution.. Ground stations network needed..
SSMIS2 - very highCoarse spatial resolution.. Ground stations network needed..
Delta-2D2 - very highCoarse spatial resolution.. Ground stations network needed..
MWI (HY-2A)2 - very highCoarse spatial resolution.. Ground stations network needed..
SHF2 - very highCoarse spatial resolution.. Ground stations network needed..
SMMR2 - very highCoarse spatial resolution.. Ground stations network needed..
SAR-X/Ku3 - highInfrequent coverage..
BRLK “Briz”3 - highChange detection only.. Infrequent coverage..
COSI3 - highChange detection only.. Infrequent coverage..
HRWS-SAR3 - highChange detection only.. Infrequent coverage..
MeteoSAR3 - highChange detection only.. Infrequent coverage..
RLSBO3 - highChange detection only.. Infrequent coverage..
SAR-20003 - highChange detection only.. Infrequent coverage..
SAR-2000 S.G.3 - highChange detection only.. Infrequent coverage..
SAR-X3 - highChange detection only.. Infrequent coverage..
SAR-X (Paz (SEOSAR))3 - highChange detection only.. Infrequent coverage..
SAR-X (RISAT-2)3 - highChange detection only.. Infrequent coverage..
Severjanin-M3 - highChange detection only.. Infrequent coverage..
W-SAR3 - highChange detection only.. Infrequent coverage..
XSAR3 - highChange detection only.. Infrequent coverage..
AMI-SAR3 - highChange detection only.. Infrequent coverage..
ASAR3 - highChange detection only.. Infrequent coverage..
SAR (RadarSat-1)3 - highChange detection only.. Infrequent coverage..
SAR RCM3 - highChange detection only.. Infrequent coverage..
SAR-C (GF-3)3 - highChange detection only.. Infrequent coverage..
SAR-C (RISAT)3 - highChange detection only.. Infrequent coverage..
SAR-C (Sentinel-1)3 - highChange detection only.. Infrequent coverage..
SAR-Travers4 - fairChange detection only.. Infrequent coverage..
SAR-104 - fairChange detection only.. Infrequent coverage..
SAR-S4 - fairChange detection only.. Infrequent coverage..
SAR-S (NISAR) 4 - fairChange detection only.. Infrequent coverage..
InSAR4 - fairChange detection only.. Infrequent coverage..
PALSAR4 - fairChange detection only.. Infrequent coverage..
PALSAR-24 - fairChange detection only.. Infrequent coverage..
SAR4 - fairChange detection only.. Infrequent coverage..
SAR (JERS)4 - fairChange detection only.. Infrequent coverage..
SAR-L4 - fairChange detection only.. Infrequent coverage..
SAR-L (NISAR)4 - fairChange detection only.. Infrequent coverage..
WindRAD5 - marginalCoarse spatial resolution.. Ground stations network needed..
NSCAT5 - marginalCoarse spatial resolution.. Ground stations network needed..
OSCAT5 - marginalCoarse spatial resolution.. Ground stations network needed..
RapidScat5 - marginalCoarse spatial resolution.. Ground stations network needed..
SASS5 - marginalCoarse spatial resolution.. Ground stations network needed..
SCAT (CFOSAT)5 - marginalCoarse spatial resolution.. Ground stations network needed..
SCAT (HY-2A)5 - marginalCoarse spatial resolution.. Ground stations network needed..
SCAT (Meteor-M N3)5 - marginalCoarse spatial resolution.. Ground stations network needed..
SeaWinds5 - marginalCoarse spatial resolution.. Ground stations network needed..
AMI-SCAT5 - marginalCoarse spatial resolution.. Ground stations network needed..
ASCAT5 - marginalCoarse spatial resolution.. Ground stations network needed..
SCA (Scatterometer)5 - marginalCoarse spatial resolution.. Ground stations network needed..