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
Help icon
Help icon
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 Cloud drop effective radius

Definition:

Size distribution of liquid water drops, assimilated to spheres of the same volume. Considered as both a 3D field throughout the troposphere and a 2D field at the top of cloud surface.

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

Found 197 results

Instrument NRT? Relevance Satellite Orbit
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
DPRNo1 - primaryGPM Core Observatory65 °
X
XXXXX
Ku/KaPR1 - primaryFY-3RM-1XXXXXX
Ku/KaPR1 - primaryFY-3RM-2XXXXXX
PR Important note1 - primaryTRMM35 °
X
XXXXXXXXXXXXXXXXX
X
CPR (CloudSat) Important note1 - primaryCloudSat13:30 asc
X
XXXXXXXXXXXXX
CPR (Earth-CARE)1 - primaryEarthCARE14:00 descXXXX
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
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 desc
X
XXXXX
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 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
SSMIS Important noteNo2 - very highDMSP-F1615:50 asc
X
XXXXXXXXXXXXXXXX
SSMIS Important noteNo2 - very highDMSP-F1706:20 desc
X
XXXXXXXXXXXXX
SSMIS Important noteNo2 - very highDMSP-F1807:08 desc
X
XXXXXXXXXX
SSMISNo2 - very highDMSP-F1906:36 desc
X
X
X
ATMSYes2 - very highNOAA-2013:25 asc
X
XXXXXXX
ATMS2 - very highJPSS-213:30 ascXXXXXXXX
ATMSYes2 - very highSNPP13:25 asc
X
XXXXXXXX
ATMS2 - very highJPSS-313:30 ascXXXXXXXX
ATMS2 - very highJPSS-413:30 ascXXXXXXXX
MWS2 - very highMetop-SG-A109:30 descXXXXXXXX
MWS2 - very highMetop-SG-A209:30 descXXXXXXXX
MWS2 - very highMetop-SG-A309:30 descXXXXXXXX
MWHS-2Yes2 - very highFY-3C10:15 desc
X
XXXXXX
MWHS-2Yes2 - very highFY-3D14:00 asc
X
XXXXX
MWHS-22 - very highFY-3E06:00 descXXXXXX
MWHS-22 - very highFY-3F10:00 descXXXXXX
MWHS-22 - very highFY-3G14:00 ascXXXXXX
MWHS-22 - very highFY-3H06:00 descXXXXXX
MWHS-2 (FY-3RM)2 - very highFY-3RM-1XXXXXX
MWHS-2 (FY-3RM)2 - very highFY-3RM-2XXXXXX
AMSU-A Important noteYes2 - very highAqua13:30 asc
X
XXXXXXXXXXXXXXXXX
AMSU-A Important noteYes2 - very highMetop-A09:30 desc
X
XXXXXXXXXXXXX
AMSU-AYes2 - very highMetop-B09:30 desc
X
XXXXXXX
AMSU-A2 - very highMetop-C09:30 desc
X
XXXXXX
AMSU-A Important noteYes2 - very highNOAA-1506:30 desc
X
XXXXXXXXXXXXXXXXXXXXX
AMSU-A2 - very highNOAA-1609:01 desc
X
XXXXXXXXXXXXX
X
AMSU-A Important note2 - very highNOAA-1707:03 desc
X
X
AMSU-AYes2 - very highNOAA-1807:40 desc
X
XXXXXXXXXXXXXX
AMSU-A Important noteYes2 - very highNOAA-1915:44 asc
X
XXXXXXXXXX
AMSU-B Important note2 - very highNOAA-1506:30 desc
X
XXXXXXXXXXXX
X
AMSU-B2 - very highNOAA-1609:01 desc
X
XXXXXXXXXXXXX
X
AMSU-B Important note2 - very highNOAA-1707:03 desc
X
XXXXXXXXXX
X
MHS Important noteYes2 - very highMetop-A09:30 desc
X
XXXXXXXXXXXXX
MHSYes2 - very highMetop-B09:30 desc
X
XXXXXXX
MHS2 - very highMetop-C09:30 desc
X
XXXXXX
MHSYes2 - very highNOAA-1807:40 desc
X
XXXXXXXXXXXXXX
MHS Important noteYes2 - very highNOAA-1915:44 asc
X
XXXXXXXXXX
SSM/T-22 - very highDMSP-F1105:00 desc
X
XXXXXXXX
X
SSM/T-22 - very highDMSP-F1203:35 desc
X
XXXXXXXXXXXXX
X
SSM/T-2 Important noteNo2 - very highDMSP-F1417:00 asc
X
XXXXXXXXXXXXXXXXXX
SSM/T-2 Important noteNo2 - very highDMSP-F1514:50 asc
X
XXXXXXXXXXXXXXXX
AATSR3 - highEnvisat10:00 desc
X
XXXXXXXXX
X
ATSR-2 Important note3 - highERS-210:30 desc
X
XXXXXXXXXXXX
X
SLSTRYes3 - highSentinel-3A10:00 desc
X
XXXXXXX
SLSTRYes3 - highSentinel-3B10:00 desc
X
XXXXXXX
SLSTR3 - highSentinel-3C10:00 descXXXXXXXX
SLSTR3 - highSentinel-3D10:00 descXXXXXXXX
ABI3 - highGOES-1675.2°W
X
XXXXXXXXXXX
ABIYes3 - highGOES-1789.5°W
X
XXXXXXXXXXX
ABI3 - highGOES-T137°WXXXXXXXXXXXX
ABI3 - highGOES-U75°WXXXXXXXXXXXX
AGRIYes3 - highFY-4A105°E
X
XXXXX
AGRI3 - highFY-4B105°EXXXXXXXX
AGRI3 - highFY-4C86.5°EXXXXXXXX
AGRI3 - highFY-4D105°EXXXXXXXX
AGRI3 - highFY-4E86.5°EXXXXXXXX
AGRI3 - highFY-4F105°EXXXXXXXX
AGRI3 - highFY-4G86.5°EXXXXXXXX
AHIYes3 - highHimawari-8140.7°E
X
XXXXXXXXXXXXXXX
AHI3 - highHimawari-9140.7°E
X
XXXXXXXXXXXXXXX
AMI3 - highGEO-KOMPSAT-2A128.25°E
X
XXXXXXXXXXX
AVHRR/3Yes3 - highMetop-A09:30 desc
X
XXXXXXXXXXXXX
AVHRR/3Yes3 - highMetop-B09:30 desc
X
XXXXXXX
AVHRR/33 - highMetop-C09:30 desc
X
XXXXXX
AVHRR/3 Important noteYes3 - highNOAA-1506:30 desc
X
XXXXXXXXXXXXXXXXXXXXX
AVHRR/33 - highNOAA-1609:01 desc
X
XXXXXXXXXXXXX
X
AVHRR/3 Important note3 - highNOAA-1707:03 desc
X
XXXXXXX
X
AVHRR/3Yes3 - highNOAA-1807:40 desc
X
XXXXXXXXXXXXXX
AVHRR/3Yes3 - highNOAA-1915:44 asc
X
XXXXXXXXXX
FCI3 - highMTG-I19.5°EXXXXXXXXX
FCI3 - highMTG-I29.5°EXXXXXXXXX
FCI3 - highMTG-I39.5°EXXXXXXXXX
FCI3 - highMTG-I49.5°EXXXXXXXXX
GLI3 - highADEOS-210:30 desc
X
X
MERSI-2Yes3 - highFY-3D14:00 asc
X
XXXXX
MERSI-23 - highFY-3E06:00 descXXXXXX
MERSI-23 - highFY-3F10:00 descXXXXXX
MERSI-23 - highFY-3G14:00 ascXXXXXX
MERSI-23 - highFY-3H06:00 descXXXXXX
MERSI-23 - highFY-3RM-1XXXXXX
MERSI-23 - highFY-3RM-2XXXXXX
MetImage3 - highMetop-SG-A109:30 descXXXXXXXX
MetImage3 - highMetop-SG-A209:30 descXXXXXXXX
MetImage3 - highMetop-SG-A309:30 descXXXXXXXX
MODISYes3 - highAqua13:30 asc
X
XXXXXXXXXXXXXXXXX
MODISYes3 - highTerra10:30 desc
X
XXXXXXXXXXXXXXXXXXXX
MSU-GSM3 - highElectro-M N114.5°WXXXXXXXXXXX
MSU-GSM3 - highElectro-M N276°EXXXXXXXXXXX
MSU-GSM3 - highElectro-M N3165.8°EXXXXXXXXXXX
MSU-MR Important note3 - highMeteor-M N109:30 desc
X
XXXX
X
MSU-MRYes3 - highMeteor-M N209:30 asc
X
XXXXX
MSU-MR3 - highMeteor-M N2-209:00 desc
X
XXXXX
MSU-MR3 - highMeteor-M N2-315:09 ascXXXXXX
MSU-MR3 - highMeteor-M N2-409:00 descXXXXXX
MSU-MR3 - highMeteor-M N2-515:00 descXXXXXX
MSU-MR3 - high Meteor-M N2-609:00 ascXXXXXX
MSU-MR-MP3 - highMeteor-MP N115:30 ascXXXXXXXX
MSU-MR-MP3 - highMeteor-MP N209:30 descXXXXXXXX
MVISR3 - highFY-1A15:30 asc
X
MVISR3 - highFY-1B07:50 desc
X
X
MVISR3 - highFY-1C07:00 desc
X
XXXX
X
MVISR3 - highFY-1D09:00 desc
X
XXXXXXXXX
X
SEVIRI3 - highMeteosat-83.7°E
X
XXXXXXXXXXXXX
X
SEVIRI Important noteYes3 - highMeteosat-93.5°E
X
XXXXXXXXXXXXXX
SEVIRI Important noteYes3 - highMeteosat-109.5°E
X
XXXXXXX
SEVIRI3 - highMeteosat-11
X
XXXXXXX
SEVIRI3 - highMeteosat-8 (IODC)41.5°E
X
XXX
VIIRSYes3 - highNOAA-2013:25 asc
X
XXXXXXX
VIIRS3 - highJPSS-213:30 ascXXXXXXXX
VIIRSYes3 - highSNPP13:25 asc
X
XXXXXXXX
VIIRS3 - highJPSS-313:30 ascXXXXXXXX
VIIRS3 - highJPSS-413:30 ascXXXXXXXX
VIRR (FY-3)3 - highFY-3A09:05 desc
X
XXXXXX
X
VIRR (FY-3)Yes3 - highFY-3B13:38 asc
X
XXXXXXXXX
VIRR (FY-3)Yes3 - highFY-3C10:15 desc
X
XXXXXX
MSU-GS/A3 - highArctica-M N163.4 °
X
XXXXX
MSU-GS/A3 - highArctica-M N263.4 °XXXXXX
MSU-GS/A3 - highArctica-M N363.4 °XXXXXX
MSU-GS/A3 - highArctica-M N463.4 °XXXXXX
MSU-GS/A3 - highArctica-M N563.4 °XXXXXX
IMAGER (INSAT)Yes3 - highINSAT-3D82°E
X
XXXXXXXX
IMAGER (INSAT)3 - highINSAT-3DR74°E
X
XXXXXXXX
IMAGER (INSAT)3 - highINSAT-3DS74°EXXXXXXXX
VIRS3 - highTRMM35 °
X
XXXXXXXXXXXXXXXXX
X
AVHRR3 - highNOAA-607:30 desc
X
XXXXXXX
X
AVHRR3 - highNOAA-807:30 desc
X
X
X
AVHRR3 - highNOAA-1007:30 desc
X
XXXXXXXXXXXXXX
X
AVHRR3 - highTIROS-N14:30 asc
X
XX
X
AVHRR/23 - highNOAA-714:30 asc
X
XXXX
X
AVHRR/23 - highNOAA-914:30 asc
X
XXXXXXXXXXXXX
X
AVHRR/23 - highNOAA-1114:10 asc
X
XXXXXXXXXXXXXXX
X
AVHRR/23 - highNOAA-1205:10 desc
X
XXXXXXXXXXXXXXX
X
AVHRR/23 - highNOAA-1314:00 asc
X
AVHRR/23 - highNOAA-1409:30 desc
X
XXXXXXXXXXXX
X
MSU-GS3 - highElectro-L N129.6°W
X
XXXXX
MSU-GS Important noteYes3 - highElectro-L N276°E
X
XXXXXXX
MSU-GS3 - highElectro-L N314.5°WXXXXXXXX
MSU-GS3 - highElectro-L N4166°EXXXXXXXX
MSU-GS3 - highElectro-L N576°EXXXXXXXXXXX
MTVZA-OK (optical)3 - highSICH-1M82.5 °
X
X
X
OCTS3 - highADEOS10:30 desc
X
X
HRSAT-13 - highHRSAT-109:30 descXXXXXX
MSU-SK13 - highResurs-O1-410:15 asc
X
XXX
X
ATSR3 - highERS-110:30 desc
X
XXXXXXXX
X
3MI4 - fairMetop-SG-A109:30 descXXXXXXXX
3MI4 - fairMetop-SG-A209:30 descXXXXXXXX
3MI4 - fairMetop-SG-A309:30 descXXXXXXXX
Polarimeters4 - fairPACE12:00 descXXXXXX
ACS-nadir4 - fairMeteor-MP N115:30 ascXXXXXXXX
ACS-nadir4 - fairMeteor-MP N209:30 descXXXXXXXX
SCIAMACHY-nadir4 - fairEnvisat10:00 desc
X
XXXXXXXXX
X
Sentinel-54 - fairMetop-SG-A109:30 descXXXXXXXX
Sentinel-54 - fairMetop-SG-A209:30 descXXXXXXXX
Sentinel-54 - fairMetop-SG-A309:30 descXXXXXXXX
TROPOMI4 - fairSentinel-5P13:30 asc
X
XXXXXXX
RS4 - fairISS CLARREO-PF51.6 °XXXXXX
UVAS4 - fairSEOSat/Ingenio10:30 descXXXXXXXX
MADPI4 - fairNEMO-AM09:30 descXXXXXX
MISRYes4 - fairTerra10:30 desc
X
XXXXXXXXXXXXXXXXXXXX
POLDER4 - fairADEOS10:30 desc
X
X
POLDER4 - fairADEOS-210:30 desc
X
X
POLDER4 - fairPARASOL15:20 asc
X
XXXXXXXX
X
GOME4 - fairERS-210:30 desc
X
XXXXXXXXXXXXXXX
X
GOME-2Yes4 - fairMetop-A09:30 desc
X
XXXXXXXXXXXXX
GOME-2Yes4 - fairMetop-B09:30 desc
X
XXXXXXX
GOME-24 - fairMetop-C09:30 desc
X
XXXXXX
Sentinel-44 - fairMTG-S1XXXXXXXXX
Sentinel-44 - fairMTG-S2XXXXXXXXX
TANSO-FTSNo4 - fairGOSAT-113:00 desc
X
XXXXXXXXXX
TANSO-FTS/24 - fairGOSAT-213:00 desc
X
XXXXX
CATS Important note5 - marginalISS CATS51.6 °
X
X
X
CALIOPNo5 - marginalCALIPSO13:30 asc
X
XXXXXXXXXXXXX
ATLID5 - marginalEarthCARE14:00 descXXXX
GEDI Lidar5 - marginalISS GEDI51.6 °
X
XXXXX
MODI lidar5 - marginalISS MODI51.6 °XXXXXX
GLAS5 - marginalICESat94 °
X
XXXXXX
X
ATLAS5 - marginalICESat-294 °
X
XXXXX
All instruments for measuring Cloud drop effective radius
Instruments Relevance Operational limitations
DPR1 - primaryNo specific limitation..
Ku/KaPR1 - primaryNo specific limitation..
PR1 - primaryNo specific limitation..
CPR (CloudSat)1 - primaryLow-density cloud only.. Along-track only..
CPR (Earth-CARE)1 - primaryLow-density cloud only.. Along-track only..
MWI (MetOp-SG)2 - very highNo specific limitation..
MIS2 - very highNo specific limitation..
MTVZA2 - very highNo specific limitation..
MTVZA-GY2 - very highNo specific limitation..
MTVZA-GY-MP2 - very highNo specific limitation..
MTVZA-OK (MW)2 - very highNo specific limitation..
SSMIS2 - very highNo specific limitation..
ATMS2 - very highNo specific limitation..
MWS2 - very highNo specific limitation..
MWHS-22 - very highNo specific limitation..
MWHS-2 (FY-3RM)2 - very highNo specific limitation..
AMSU-A2 - very highNo specific limitation..
AMSU-B2 - very highNo specific limitation..
MHS2 - very highNo specific limitation..
SSM/T-22 - very highNo specific limitation..
GeoSTAR2 - very highNo specific limitation..
AATSR3 - highAt cloud top.. Daylight only..
ATSR-23 - highAt cloud top.. Daylight only..
SLSTR3 - highAt cloud top.. Daylight only..
ISR3 - highAt cloud top.. Daylight only.. Limited coverage (only above 40° North).
ABI3 - highAt cloud top.. Daylight only..
AGRI3 - highAt cloud top.. Daylight only..
AHI3 - highAt cloud top.. Daylight only..
AMI3 - highAt cloud top.. Daylight only..
AVHRR/33 - highAt cloud top.. Daylight only..
FCI3 - highAt cloud top.. Daylight only..
GLI3 - highAt cloud top.. Daylight only..
MERSI-23 - highAt cloud top.. Daylight only..
MetImage3 - highAt cloud top.. Daylight only..
MODIS3 - highAt cloud top.. Daylight only..
MSU-GSM3 - highAt cloud top.. Daylight only..
MSU-MR3 - highAt cloud top.. Daylight only..
MSU-MR-MP3 - highAt cloud top.. Daylight only..
MVISR3 - highAt cloud top.. Daylight only..
SEVIRI3 - highAt cloud top.. Daylight only..
VIIRS3 - highAt cloud top.. Daylight only..
VIRR (FY-3)3 - highAt cloud top.. Daylight only..
MSU-GS/A3 - highAt cloud top.. Daylight only.. Limited coverage (only above 40° North).
IMAGER (INSAT)3 - highAt cloud top.. Daylight only..
VIRS3 - highAt cloud top.. Daylight only..
AVHRR3 - highAt cloud top.. Daylight only..
AVHRR/23 - highAt cloud top.. Daylight only..
MSU-GS3 - highAt cloud top.. Daylight only..
MTVZA-OK (optical)3 - highAt cloud top.. Daylight only..
OCTS3 - highAt cloud top.. Daylight only..
HRSAT-13 - highAt cloud top.. Daylight only.. Infrequent coverage..
MSU-SK13 - highAt cloud top.. Daylight only.. Infrequent coverage..
ATSR3 - highAt cloud top.. Daylight only..
3MI4 - fairAt cloud top.. Daylight only..
MAIA4 - fairAt cloud top.. Daylight only..
Polarimeters4 - fairAt cloud top.. Daylight only..
APS4 - fairAt cloud top.. Daylight only.. Along-track only..
ACS-nadir4 - fairAt cloud top.. Daylight only..
SCIAMACHY-nadir4 - fairAt cloud top.. Daylight only..
Sentinel-54 - fairAt cloud top.. Daylight only..
TROPOMI4 - fairAt cloud top.. Daylight only..
RS4 - fairAt cloud top.. Daylight only.. Along-track only..
SW spectrometer4 - fairAt cloud top.. Daylight only.. Along-track only..
UVAS4 - fairAt cloud top.. Daylight only.. Along-track only..
MADPI4 - fairAt cloud top.. Daylight only..
MISR4 - fairAt cloud top.. Daylight only..
POLDER4 - fairAt cloud top.. Daylight only..
GOME4 - fairAt cloud top.. Daylight only..
GOME-24 - fairAt cloud top.. Daylight only..
Sentinel-44 - fairAt cloud top.. Daylight only..
TANSO-FTS4 - fairAt cloud top.. Daylight only..
TANSO-FTS/24 - fairAt cloud top.. Daylight only..
CATS5 - marginalLow-density cloud only.. Infrequent coverage..
ACE Lidar5 - marginalLow-density cloud only.. Along-track only..
CALIOP5 - marginalLow-density cloud only.. Along-track only..
ATLID5 - marginalLow-density cloud only.. Along-track only..
GEDI Lidar5 - marginalLow-density cloud only.. Infrequent coverage..
MODI lidar5 - marginalLow-density cloud only.. Infrequent coverage..
VCL5 - marginalLow-density cloud only.. Infrequent coverage..
GLAS5 - marginalLow-density cloud only.. Along-track only..
ATLAS5 - marginalLow-density cloud only.. Along-track only..