WMO OSCAR | Gap analyses by variable or by type of mission or by WIGOS subcomponent

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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 () 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

Subcomponent 1

Subcomponent 2

Subcomponent 3

Subcomponent 4

Instrument types

ECT range

Orbit types

Longitude range

Analysis

Expert system, based on instrument properties Help icon

Simplified, based on mission objectives 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.

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 performance for temperature and humidity sounding; the covered spectral range. RATING CRITERIA:
1	Spectrometer covering the range 3.5-15 mm
2	Spectrometer covering the range 5-15 mm
3	Radiometer with channels in the MWIR and TIR windows, the H2O 6-8 mm band, and the CO2 4.3 and 15 mm bands
4	Radiometer with channels in the MWIR and TIR windows, the H2O 6-8 mm band, and the CO2 4.3 or 15 mm bands Radiometer with channels in the MWIR and TIR windows, and the H2O 6-8 mm band
5	MW radiometer with sounding channels for temperature and humidity MW radiometer with sounding channels for humidity

Measurement timeline for Downward long-wave irradiance at Earth surface

Definition:

Flux density of radiation emitted by the gases, aerosols and clouds of the atmosphere to the Earth's surface

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

Found 239 results

This table has a large number of results.

Hide lower rated instruments

Hide inactive instruments

Instrument	NRT?	Relevance	Satellite	Orbit	1969	1970	1971	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
AIRS	Yes	1 - primary	Aqua	13:30 asc																																		X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
CrIS	Yes	1 - primary	NOAA-20	13:25 asc																																																	X	X	X	X	X	X	X	X
CrIS		1 - primary	JPSS-2	13:30 asc																																																						X	X	X	X	X	X	X	X
CrIS	Yes	1 - primary	SNPP	13:25 asc																																											X	X	X	X	X	X	X	X	X	X	X	X	X
CrIS		1 - primary	JPSS-3	13:30 asc																																																											X	X	X	X	X	X	X	X
CrIS		1 - primary	JPSS-4	13:30 asc																																																																X	X	X	X	X	X	X	X
GIIRS	Yes	1 - primary	FY-4A	104.7°E																																																X	X	X	X	X	X	X
GIIRS		1 - primary	FY-4B	123.5°E																																																					X	X	X	X	X	X	X	X
GIIRS		1 - primary	FY-4C	86.5°E																																																									X	X	X	X	X	X	X	X
GIIRS		1 - primary	FY-4D	105°E																																																										X	X	X	X	X	X	X	X
GIIRS		1 - primary	FY-4E	86.5°E																																																											X	X	X	X	X	X	X	X
GIIRS		1 - primary	FY-4F	105°E																																																														X	X	X	X	X	X	X	X
GIIRS		1 - primary	FY-4G	86.5°E																																																																	X	X	X	X	X	X	X	X
HIRAS	Yes	1 - primary	FY-3D	13:29 asc																																																	X	X	X	X	X	X
HIRAS-2		1 - primary	FY-3E	05:30 desc																																																					X	X	X	X	X	X
HIRAS-2		1 - primary	FY-3H	14:00 asc																																																								X	X	X	X	X	X
HIRAS-2		1 - primary	FY-3F	10:00 desc																																																							X	X	X	X	X	X
HIRAS-2		1 - primary	FY-3I	05:30 desc																																																									X	X	X	X	X	X
IASI	No	1 - primary	Metop-A	07:50 desc																																						X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
IASI	Yes	1 - primary	Metop-B	09:30 desc																																												X	X	X	X	X	X	X	X	X	X	X	X	X
IASI	Yes	1 - primary	Metop-C	09:30 desc																																																		X	X	X	X	X	X	X	X	X	X
IASI-NG		1 - primary	Metop-SG-A2	09:30 desc																																																															X	X	X	X	X	X	X	X
IASI-NG		1 - primary	Metop-SG-A3	09:30 desc																																																																					X	X	X	X	X	X	X	X
IASI-NG		1 - primary	Metop-SG-A1	09:30 desc																																																								X	X	X	X	X	X	X	X
IKFS-3		1 - primary	Meteor-MP N1	15:30 asc																																																									X	X	X	X	X	X	X	X
IKFS-3		1 - primary	Meteor-MP N2	09:30 desc																																																										X	X	X	X	X	X	X	X
IRFS-GS		1 - primary	Electro-M N1	14.5°W																																																									X	X	X	X	X	X	X	X	X	X	X
IRFS-GS		1 - primary	Electro-M N2	76°E																																																										X	X	X	X	X	X	X	X	X	X	X
IRFS-GS		1 - primary	Electro-M N3	165.8°E																																																													X	X	X	X	X	X	X	X	X	X	X
IRS		1 - primary	MTG-S1	0°																																																								X	X	X	X	X	X	X	X	X
IRS		1 - primary	MTG-S2	0°																																																																		X	X	X	X	X	X	X	X	X
TES-nadir		1 - primary	Aura	13:45 asc																																				X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
IMG		1 - primary	ADEOS	10:30 desc																												X	X
IKFS-2		2 - very high	Meteor-M N2	09:30 asc																																														X	X	X	X	X	X	X	X	X
IKFS-2		2 - very high	Meteor-M N2-1	15:09 asc																																																	X
IKFS-2		2 - very high	Meteor-M N2-2	15:00 asc																																																			X	X	X	X	X	X
IKFS-2		2 - very high	Meteor-M N2-3	09:00 desc																																																					X	X	X	X	X	X
IKFS-2		2 - very high	Meteor-M N2-4	15:00 asc																																																							X	X	X	X	X
IKFS-2		2 - very high	Meteor-M N2-5	15:00 desc																																																								X	X	X	X	X	X
IKFS-2		2 - very high	Meteor-M N2-6	09:00 asc																																																									X	X	X	X	X	X
TANSO-FTS	No	2 - very high	GOSAT	13:00 desc																																									X	X	X	X	X	X	X	X	X	X	X	X	X	X
TANSO-FTS/2		2 - very high	GOSAT-2	13:00 desc																																																		X	X	X	X	X	X
FSI		2 - very high	FORUM	09:30 desc																																																										X	X	X	X	X
IRIS-B		2 - very high	Nimbus-3	12:00 desc	X	X	X	X
IRIS-D		2 - very high	Nimbus-4	12:00 desc		X	X	X	X	X	X	X	X	X	X	X
HIRS		3 - high	Nimbus-6	12:00 desc							X	X	X	X	X	X	X	X	X
HIRS/2		3 - high	NOAA-6	07:30 desc											X	X	X	X	X	X	X	X	X
HIRS/2		3 - high	NOAA-7	14:30 asc													X	X	X	X	X	X
HIRS/2		3 - high	NOAA-8	07:30 desc															X	X	X
HIRS/2		3 - high	NOAA-9	14:30 asc																X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
HIRS/2		3 - high	NOAA-10	07:30 desc																		X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
HIRS/2		3 - high	NOAA-11	14:10 asc																				X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
HIRS/2		3 - high	NOAA-12	05:10 desc																							X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
HIRS/2		3 - high	NOAA-13	14:00 asc																									X
HIRS/2		3 - high	NOAA-14	09:30 desc																										X	X	X	X	X	X	X	X	X	X	X	X	X	X
HIRS/2		3 - high	TIROS-N	14:30 asc										X	X	X	X
HIRS/3		3 - high	NOAA-15	07:25 desc																														X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
HIRS/3		3 - high	NOAA-16	09:01 desc																																X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
HIRS/3		3 - high	NOAA-17	07:03 desc																																		X	X	X	X	X	X	X	X	X	X	X	X
HIRS/4	No	3 - high	Metop-A	07:50 desc																																						X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
HIRS/4	Yes	3 - high	Metop-B	09:30 desc																																												X	X	X	X	X	X	X	X	X
HIRS/4		3 - high	NOAA-18	07:53 desc																																					X	X	X	X	X
HIRS/4		3 - high	NOAA-19	07:00 desc																																									X	X	X	X	X	X	X	X	X	X	X	X	X	X
IRAS		3 - high	FY-3A	09:05 desc																																								X
IRAS		3 - high	FY-3B	14:45 asc																																										X	X	X	X	X	X	X	X	X	X	X
IRAS		3 - high	FY-3C	09:07 desc																																													X	X	X	X	X	X	X	X	X	X
SOUNDER		3 - high	GOES-8	75°W																										X	X	X	X	X	X	X	X	X	X	X
SOUNDER		3 - high	GOES-9	135°W																											X	X	X	X	X	X	X	X	X
SOUNDER		3 - high	GOES-10	135°W																													X	X	X	X	X	X	X	X	X	X
SOUNDER		3 - high	GOES-11	135°W																																X	X	X	X	X	X	X	X	X	X	X	X
SOUNDER		3 - high	GOES-12	75°W																																	X	X	X	X	X	X	X	X	X	X
SOUNDER	No	3 - high	GOES-13	60°W																																						X	X	X	X	X	X	X	X	X	X
SOUNDER	Yes	3 - high	GOES-14	105°W																																									X	X	X	X	X	X	X	X	X	X	X	X	X	X
SOUNDER	Yes	3 - high	GOES-15	128°W																																										X	X	X	X	X	X	X	X	X	X	X	X	X
SOUNDER		3 - high	GOES-9 (GMS backup)	155°E																																			X	X	X	X
SOUNDER		3 - high	GOES-10 (S-America)	60°W																																						X	X	X	X
SOUNDER		3 - high	GOES-12 (S-America)	60°W																																										X	X	X	X
SOUNDER (INSAT)	No	3 - high	INSAT-3D	82°E																																													X	X	X	X	X	X	X	X
SOUNDER (INSAT)	Yes	3 - high	INSAT-3DR	74°E																																																X	X	X	X	X	X	X	X	X	X
SOUNDER (INSAT)		3 - high	INSAT-3DS	74°E																																																						X	X	X	X	X	X	X	X
VAS		3 - high	GOES-4	135°W												X	X	X	X	X	X	X	X	X
VAS		3 - high	GOES-5	75°W													X	X	X	X	X	X	X	X	X	X
VAS		3 - high	GOES-6	135°W															X	X	X	X	X	X	X
VAS		3 - high	GOES-7	75°W																			X	X	X	X	X	X	X	X	X	X
METimage		3 - high	Metop-SG-A2	09:30 desc																																																															X	X	X	X	X	X	X	X
METimage		3 - high	Metop-SG-A3	09:30 desc																																																																					X	X	X	X	X	X	X	X
METimage		3 - high	Metop-SG-A1	09:30 desc																																																								X	X	X	X	X	X	X	X
MODIS	Yes	3 - high	Aqua	13:30 asc																																		X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
MODIS	Yes	3 - high	Terra	10:30 desc																															X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
MSU-MR-MP		3 - high	Meteor-MP N1	15:30 asc																																																									X	X	X	X	X	X	X	X
MSU-MR-MP		3 - high	Meteor-MP N2	09:30 desc																																																										X	X	X	X	X	X	X	X
ABI		4 - fair	GOES-16	75.2°W																																																X	X	X	X	X	X	X	X	X	X	X	X
ABI	Yes	4 - fair	GOES-17	137.2°W																																																		X	X	X	X	X	X	X	X	X	X	X	X
ABI		4 - fair	GOES-T	137°W																																																						X	X	X	X	X	X	X	X	X	X	X	X
ABI		4 - fair	GOES-U	75°W																																																								X	X	X	X	X	X	X	X	X	X	X	X
AGRI	Yes	4 - fair	FY-4A	104.7°E																																																X	X	X	X	X	X	X
AGRI		4 - fair	FY-4B	123.5°E																																																					X	X	X	X	X	X	X	X
AGRI		4 - fair	FY-4C	86.5°E																																																									X	X	X	X	X	X	X	X
AGRI		4 - fair	FY-4D	105°E																																																										X	X	X	X	X	X	X	X
AGRI		4 - fair	FY-4E	86.5°E																																																											X	X	X	X	X	X	X	X
AGRI		4 - fair	FY-4F	105°E																																																														X	X	X	X	X	X	X	X
AGRI		4 - fair	FY-4G	86.5°E																																																																	X	X	X	X	X	X	X	X
AHI	Yes	4 - fair	Himawari-8	140.7°E																																														X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
AHI		4 - fair	Himawari-9	140.7°E																																																X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
AMI	Yes	4 - fair	GEO-KOMPSAT-2A	128.2°E																																																		X	X	X	X	X	X	X	X	X	X	X	X
FCI		4 - fair	MTG-I1	0°																																																						X	X	X	X	X	X	X	X	X
FCI		4 - fair	MTG-I2	0°																																																									X	X	X	X	X	X	X	X	X
FCI		4 - fair	MTG-I3	0°																																																																X	X	X	X	X	X	X	X	X
FCI		4 - fair	MTG-I4	0°																																																																				X	X	X	X	X	X	X	X	X
MSU-GSM		4 - fair	Electro-M N1	14.5°W																																																									X	X	X	X	X	X	X	X	X	X	X
MSU-GSM		4 - fair	Electro-M N2	76°E																																																										X	X	X	X	X	X	X	X	X	X	X
MSU-GSM		4 - fair	Electro-M N3	165.8°E																																																													X	X	X	X	X	X	X	X	X	X	X
SEVIRI		4 - fair	Meteosat-8	3.7°E																																		X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
SEVIRI	Yes	4 - fair	Meteosat-9	3.5°E																																					X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
SEVIRI	Yes	4 - fair	Meteosat-10	9.5°E																																												X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
SEVIRI		4 - fair	Meteosat-11	0°																																															X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
SEVIRI		4 - fair	Meteosat-8 (IODC)	41.5°E																																																X	X	X	X	X	X	X
SEVIRI	Yes	4 - fair	Meteosat-9 (IODC)	45.5°E																																																						X	X	X	X
MERSI-2	Yes	4 - fair	FY-3D	13:29 asc																																																	X	X	X	X	X	X
MERSI-3		4 - fair	FY-3F	10:00 desc																																																							X	X	X	X	X	X
MERSI-3		4 - fair	FY-3H	14:00 asc																																																								X	X	X	X	X	X
VIIRS	Yes	4 - fair	NOAA-20	13:25 asc																																																	X	X	X	X	X	X	X	X
VIIRS		4 - fair	JPSS-2	13:30 asc																																																						X	X	X	X	X	X	X	X
VIIRS	Yes	4 - fair	SNPP	13:25 asc																																											X	X	X	X	X	X	X	X	X	X	X	X	X
VIIRS		4 - fair	JPSS-3	13:30 asc																																																											X	X	X	X	X	X	X	X
VIIRS		4 - fair	JPSS-4	13:30 asc																																																																X	X	X	X	X	X	X	X
MSU-GS/A		4 - fair	Arctica-M N1	63.4 °																																																					X	X	X	X	X	X	X	X	X	X	X
MSU-GS/A		4 - fair	Arctica-M N2	63.4 °																																																							X	X	X	X	X	X	X	X	X	X	X
MSU-GS/A		4 - fair	Arctica-M N3	63.4 °																																																								X	X	X	X	X	X	X	X	X	X	X
MSU-GS/A		4 - fair	Arctica-M N4	63.4 °																																																									X	X	X	X	X	X	X	X	X	X	X
MSU-GS/A		4 - fair	Arctica-M N5	63.4 °																																																									X	X	X	X	X	X	X	X	X	X	X
GLI		4 - fair	ADEOS-2	10:30 desc																																		X	X
IMAGER (GOES 12-15)		4 - fair	GOES-12	75°W																																	X	X	X	X	X	X	X	X	X	X
IMAGER (GOES 12-15)	Yes	4 - fair	GOES-13	60°W																																						X	X	X	X	X	X	X	X	X	X	X	X	X	X
IMAGER (GOES 12-15)	Yes	4 - fair	GOES-14	105°W																																									X	X	X	X	X	X	X	X	X	X	X	X	X	X
IMAGER (GOES 12-15)	Yes	4 - fair	GOES-15	128°W																																										X	X	X	X	X	X	X	X	X	X	X	X	X
IMAGER (GOES 12-15)		4 - fair	GOES-12 (S-America)	60°W																																										X	X	X	X
IMAGER (GOES 8-11)		4 - fair	GOES-8	75°W																										X	X	X	X	X	X	X	X	X	X	X
IMAGER (GOES 8-11)		4 - fair	GOES-9	135°W																											X	X	X	X	X	X	X	X	X
IMAGER (GOES 8-11)		4 - fair	GOES-10	135°W																													X	X	X	X	X	X	X	X	X	X
IMAGER (GOES 8-11)		4 - fair	GOES-11	135°W																																X	X	X	X	X	X	X	X	X	X	X	X
IMAGER (GOES 8-11)		4 - fair	GOES-9 (GMS backup)	155°E																																			X	X	X	X
IMAGER (GOES 8-11)		4 - fair	GOES-10 (S-America)	60°W																																						X	X	X	X
IMAGER (INSAT)	Yes	4 - fair	INSAT-3D	82°E																																													X	X	X	X	X	X	X	X	X	X
IMAGER (INSAT)	Yes	4 - fair	INSAT-3DR	74°E																																																X	X	X	X	X	X	X	X	X	X
IMAGER (INSAT)		4 - fair	INSAT-3DS	74°E																																																						X	X	X	X	X	X	X	X
IMAGER (MTSAT-2)	No	4 - fair	Himawari-7 (MTSAT-2)	145°E																																						X	X	X	X	X	X	X	X	X	X	X
JAMI		4 - fair	Himawari-6 (MTSAT-1R)	140°E																																					X	X	X	X	X	X	X	X	X	X	X
MERSI-LL		4 - fair	FY-3I	05:30 desc																																																									X	X	X	X	X	X
MERSI-LL		4 - fair	FY-3E	05:30 desc																																																					X	X	X	X	X	X
MI		4 - fair	COMS	128.2°E																																										X	X	X	X	X	X	X	X	X	X	X
MSU-GS		4 - fair	Electro-L N1	29.6°W																																											X	X	X	X	X	X
MSU-GS	Yes	4 - fair	Electro-L N2	14.5°W																																															X	X	X	X	X	X	X	X	X	X	X
MSU-GS		4 - fair	Electro-L N3	76°E																																																			X	X	X	X	X	X	X	X	X	X	X
MSU-GS		4 - fair	Electro-L N4	166°E																																																							X	X	X	X	X	X	X	X	X	X
MSU-GS		4 - fair	Electro-L N5	76°E																																																							X	X	X	X	X	X	X	X	X	X	X
OCTS		4 - fair	ADEOS	10:30 desc																												X	X
S-VISSR (FY-2C/D/E)		4 - fair	FY-2C	105°E																																				X	X	X	X	X	X
S-VISSR (FY-2C/D/E)		4 - fair	FY-2D	86.5°E																																						X	X	X	X	X	X	X	X	X	X
S-VISSR (FY-2C/D/E)	Yes	4 - fair	FY-2E	86.5°E																																								X	X	X	X	X	X	X	X	X	X	X
S-VISSR (FY-2F/G/H)	Yes	4 - fair	FY-2F	112°E																																												X	X	X	X	X	X	X	X	X	X	X
S-VISSR (FY-2F/G/H)	Yes	4 - fair	FY-2G	105°E																																														X	X	X	X	X	X	X	X	X
S-VISSR (FY-2F/G/H)	Yes	4 - fair	FY-2H	79°E																																																		X	X	X	X	X
ATMS	Yes	5 - marginal	NOAA-20	13:25 asc																																																	X	X	X	X	X	X	X	X
ATMS		5 - marginal	JPSS-2	13:30 asc																																																						X	X	X	X	X	X	X	X
ATMS	Yes	5 - marginal	SNPP	13:25 asc																																											X	X	X	X	X	X	X	X	X	X	X	X	X
ATMS		5 - marginal	JPSS-3	13:30 asc																																																											X	X	X	X	X	X	X	X
ATMS		5 - marginal	JPSS-4	13:30 asc																																																																X	X	X	X	X	X	X	X
MWS		5 - marginal	Metop-SG-A2	09:30 desc																																																															X	X	X	X	X	X	X	X
MWS		5 - marginal	Metop-SG-A3	09:30 desc																																																																					X	X	X	X	X	X	X	X
MWS		5 - marginal	Metop-SG-A1	09:30 desc																																																								X	X	X	X	X	X	X	X
MWHS-2	Yes	5 - marginal	FY-3C	09:07 desc																																													X	X	X	X	X	X	X	X	X	X
MWHS-2	Yes	5 - marginal	FY-3D	13:29 asc																																																	X	X	X	X	X	X
MWHS-2		5 - marginal	FY-3E	05:30 desc																																																					X	X	X	X	X	X
MWHS-2		5 - marginal	FY-3H	14:00 asc																																																								X	X	X	X	X	X
MWHS-2		5 - marginal	FY-3F	10:00 desc																																																							X	X	X	X	X	X
MWHS-2		5 - marginal	FY-3I	05:30 desc																																																									X	X	X	X	X	X
TMS		5 - marginal	TROPICS-01	14:00 desc																																																					X	X
TMS		5 - marginal	TROPICS-02	30 °																																																						X	X
TMS		5 - marginal	TROPICS-03	30 °																																																						X	X
TMS		5 - marginal	TROPICS-04	30 °																																																						X	X
TMS		5 - marginal	TROPICS-05	30 °																																																						X	X
TMS		5 - marginal	TROPICS-06	30 °																																																						X	X
TMS		5 - marginal	TROPICS-07	30 °																																																						X	X
AMSU-A	Yes	5 - marginal	Aqua	13:30 asc																																		X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
AMSU-A	Yes	5 - marginal	Metop-B	09:30 desc																																												X	X	X	X	X	X	X	X	X	X	X	X	X
AMSU-A	Yes	5 - marginal	Metop-C	09:30 desc																																																		X	X	X	X	X	X	X	X	X	X
AMSU-A	Yes	5 - marginal	NOAA-15	07:25 desc																														X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
AMSU-A		5 - marginal	NOAA-16	09:01 desc																																X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
AMSU-A	No	5 - marginal	Metop-A	07:50 desc																																						X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
AMSU-A		5 - marginal	NOAA-17	07:03 desc																																		X	X
AMSU-A	Yes	5 - marginal	NOAA-18	07:53 desc																																					X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
AMSU-A	Yes	5 - marginal	NOAA-19	07:00 desc																																									X	X	X	X	X	X	X	X	X	X	X	X	X	X
MWTS-2		5 - marginal	FY-3C	09:07 desc																																													X	X	X
MWTS-2	Yes	5 - marginal	FY-3D	13:29 asc																																																	X	X	X	X	X	X
MWTS-3		5 - marginal	FY-3H	14:00 asc																																																								X	X	X	X	X	X
MWTS-3		5 - marginal	FY-3F	10:00 desc																																																							X	X	X	X	X	X
MWTS-3		5 - marginal	FY-3I	05:30 desc																																																									X	X	X	X	X	X
MWTS-3		5 - marginal	FY-3E	05:30 desc																																																					X	X	X	X	X	X
MWI (MetOp-SG)		5 - marginal	Metop-SG-B1	09:30 desc																																																									X	X	X	X	X	X	X	X
MWI (MetOp-SG)		5 - marginal	Metop-SG-B2	09:30 desc																																																															X	X	X	X	X	X	X	X
MWI (MetOp-SG)		5 - marginal	Metop-SG-B3	09:30 desc																																																																						X	X	X	X	X	X	X	X
MWRI-RM		5 - marginal	FY-3G	50 °																																																							X	X	X	X	X	X
MWRI-RM		5 - marginal	FY-3J	50 °																																																									X	X	X	X	X	X
MTVZA		5 - marginal	Meteor-3M	09:15 asc																																	X	X	X	X	X	X
MTVZA-GY		5 - marginal	Meteor-M N1	09:30 desc																																									X	X	X	X	X	X
MTVZA-GY		5 - marginal	Meteor-M N2	09:30 asc																																														X	X	X	X
MTVZA-GY		5 - marginal	Meteor-M N2-1	15:09 asc																																																	X
MTVZA-GY		5 - marginal	Meteor-M N2-2	15:00 asc																																																			X	X	X	X	X	X
MTVZA-GY		5 - marginal	Meteor-M N2-3	09:00 desc																																																					X	X	X	X	X	X
MTVZA-GY		5 - marginal	Meteor-M N2-4	15:00 asc																																																							X	X	X	X	X
MTVZA-GY		5 - marginal	Meteor-M N2-5	15:00 desc																																																								X	X	X	X	X	X
MTVZA-GY		5 - marginal	Meteor-M N2-6	09:00 asc																																																									X	X	X	X	X	X
MTVZA-GY-MP		5 - marginal	Meteor-MP N1	15:30 asc																																																									X	X	X	X	X	X	X	X
MTVZA-GY-MP		5 - marginal	Meteor-MP N2	09:30 desc																																																										X	X	X	X	X	X	X	X
MTVZA-OK (MW)		5 - marginal	SICH-1M	82.5 °																																				X	X	X
SSMIS	No	5 - marginal	DMSP-F16	06:20 desc																																			X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
SSMIS	No	5 - marginal	DMSP-F17	06:40 desc																																						X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
SSMIS	No	5 - marginal	DMSP-F18	04:50 desc																																									X	X	X	X	X	X	X	X	X	X	X	X	X	X
SSMIS	No	5 - marginal	DMSP-F19	06:36 desc																																														X	X	X
AMSU-B		5 - marginal	NOAA-15	07:25 desc																														X	X	X	X	X	X	X	X	X	X	X	X	X	X
AMSU-B		5 - marginal	NOAA-16	09:01 desc																																X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
AMSU-B		5 - marginal	NOAA-17	07:03 desc																																		X	X	X	X	X	X	X	X	X	X	X	X
HSB	No	5 - marginal	Aqua	13:30 asc																																		X	X
MHS	No	5 - marginal	Metop-A	07:50 desc																																						X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
MHS	Yes	5 - marginal	Metop-B	09:30 desc																																												X	X	X	X	X	X	X	X	X	X	X	X	X
MHS	Yes	5 - marginal	Metop-C	09:30 desc																																																		X	X	X	X	X	X	X	X	X	X
MHS	Yes	5 - marginal	NOAA-18	07:53 desc																																					X	X	X	X	X	X	X	X	X	X	X	X	X
MHS	Yes	5 - marginal	NOAA-19	07:00 desc																																									X	X	X	X	X	X	X	X	X	X	X	X	X	X
MM Radiometer		5 - marginal	ISS TEMPEST-D	51.6 °																																																		X	X	X	X	X
MM Radiometer		5 - marginal	ISS TEMPEST-1	51.6 °																																																					X	X	X	X	X
MWHS-1		5 - marginal	FY-3A	09:05 desc																																								X	X	X	X	X	X	X	X
MWHS-1		5 - marginal	FY-3B	14:45 asc																																										X	X	X	X	X	X	X	X	X	X	X
MWR (AWS)	Yes	5 - marginal	AWS	TBD																																																								X	X	X	X	X	X
SAPHIR	Yes	5 - marginal	Megha-Tropiques	20 °																																											X	X	X	X	X	X	X	X	X	X	X	X
SSM/T-2		5 - marginal	DMSP-F11	05:00 desc																							X	X	X	X	X	X	X	X	X	X
SSM/T-2		5 - marginal	DMSP-F12	03:35 desc																										X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
SSM/T-2	No	5 - marginal	DMSP-F14	05:00 desc																													X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X
SSM/T-2	No	5 - marginal	DMSP-F15	14:50 asc																															X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X	X

All instruments for measuring Downward long-wave irradiance at Earth surface

Instruments	Relevance	Operational limitations
AIRS	1 - primary
CrIS	1 - primary
GIIRS	1 - primary
HIRAS	1 - primary
HIRAS-2	1 - primary
IASI	1 - primary
IASI-NG	1 - primary
IKFS-3	1 - primary
IRFS-GS	1 - primary
IRS	1 - primary
TES-nadir	1 - primary
IMG	1 - primary
IKFS-2	2 - very high
TANSO-FTS	2 - very high
TANSO-FTS/2	2 - very high
FSI	2 - very high
IR spectrometer	2 - very high
IRIS-B	2 - very high
IRIS-D	2 - very high
HIRS	3 - high
HIRS/2	3 - high
HIRS/3	3 - high
HIRS/4	3 - high
IRAS	3 - high
SOUNDER	3 - high
SOUNDER (INSAT)	3 - high
VAS	3 - high
METimage	3 - high
MODIS	3 - high
MSU-MR-MP	3 - high
ISR	4 - fair
ABI	4 - fair
AGRI	4 - fair
AHI	4 - fair
AMI	4 - fair
FCI	4 - fair
MSU-GSM	4 - fair
SEVIRI	4 - fair
MERSI-2	4 - fair
MERSI-3	4 - fair
VIIRS	4 - fair
MSU-GS/A	4 - fair
GLI	4 - fair
IMAGER (GOES 12-15)	4 - fair
IMAGER (GOES 8-11)	4 - fair
IMAGER (INSAT)	4 - fair
IMAGER (MTSAT-2)	4 - fair
JAMI	4 - fair
MERSI-LL	4 - fair
MI	4 - fair
MSU-GS	4 - fair
OCTS	4 - fair
S-VISSR (FY-2C/D/E)	4 - fair
S-VISSR (FY-2F/G/H)	4 - fair
ATMS	5 - marginal
GeoSTAR	5 - marginal
MWS	5 - marginal
MWHS-2	5 - marginal
TMS	5 - marginal
AMSU-A	5 - marginal
MWTS-2	5 - marginal
MWTS-3	5 - marginal
MWI (MetOp-SG)	5 - marginal
MWRI-RM	5 - marginal
MTVZA	5 - marginal
MTVZA-GY	5 - marginal
MTVZA-GY-MP	5 - marginal
MTVZA-OK (MW)	5 - marginal
SSMIS	5 - marginal
AMSU-B	5 - marginal
HSB	5 - marginal
MHS	5 - marginal
MM Radiometer	5 - marginal
MWHS-1	5 - marginal
MWR (AWS)	5 - marginal
SAPHIR	5 - marginal
SSM/T-2	5 - marginal