WMO OSCAR | Details for Instrument IKFS-2

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Instrument: IKFS-2

Instrument details

Acronym	IKFS-2
Full name	Infrared Fourier Spectrometer - 2
Purpose	Temperature/humidity sounding, ozone profile and total-column green-house gases
Short description	IR interferometer, 2670 channels [see detailed characteristics below]
Background	New development
Scanning Technique	Cross-track: 30 steps to cover a swath of 1000 km if contiguous, up to 2500 km with gaps
Resolution	35 km at s,s,p.
Coverage / Cycle	Near-global coverage twice/day (with gaps) or once/day (continuous)
Mass	50 kg	Power	50 W	Data Rate	600 kbps

Providing Agency	Roscosmos
Instrument Maturity	Backed by strong heritage
Utilization Period:	2014 to 2031
Last update:	2021-06-02

Detailed characteristics

Spectral range (µm)	Spectral range (cm^-1)	Spectral resolution (unapodised)	NEΔT @ specified scene temperature
5-15 µm	665-2000 cm^-1	0.5 cm^-1	0.5 K @ 280 K

Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Meteor-3M (RosHydroMet)
- Meteor-M N2 (see instrument status) Oct 2014 - Dec 2022
- Meteor-M N2-1 (see instrument status) Nov 2017 - Nov 2017
- Meteor-M N2-2 (see instrument status) Oct 2019 - 2024
- Meteor-M N2-3 (see instrument status) Sep 2023 - 2028
- Meteor-M N2-4 (see instrument status) 2024 - 2029
- Meteor-M N2-5 (see instrument status) 2025 - 2030
- Meteor-M N2-6 (see instrument status) 2026 - 2031

Instrument classification

Earth observation instrument
Passive optical radiometer or spectrometer
Cross-nadir infrared sounder, possibly including VIS channels

WIGOS Subcomponents

Subcomponent 1
IR hyperspectral sounders [in SSO]
IR hyperspectral sounder [in SSO]

Mission objectives

Primary mission objectives

Atmospheric temperature
Height of the top of PBL
Height of the tropopause
Integrated Water Vapour (IWV)
Specific humidity
Temperature of the tropopause

Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
Note: * Primary mission objective.

Variable	Relevance for measuring this variable	Operational limitations	Explanation
Atmospheric temperature*	2 - very high	Cloud sensitive.. Inaccurate in low troposphere.	TIR spectrometry in the 15 micrometer band
C2H2	3 - high	Cloud sensitive.. Coarse vertical resolution.	TIR spectrometry. C2H2 lines around 7.5 and 13.7 micrometers
C2H6	3 - high	Cloud sensitive.. Coarse vertical resolution.	TIR spectrometry. C2H6 lines around 12 micrometers
CFC-11	3 - high	Cloud sensitive.. Coarse vertical resolution.	TIR spectrometry. CFC-11 lines around 9.2 and 11.7 micrometers
CFC-12	3 - high	Cloud sensitive.. Coarse vertical resolution.	TIR spectrometry. CFC-12 lines around 8.8 and 10.8 micrometers
CH4 mole fraction	5 - marginal	Cloud sensitive.. Coarse vertical resolution.	TIR spectrometry. CH4 lines around 7.7 micrometers
ClONO2	2 - very high	Cloud sensitive.. Coarse vertical resolution.	MWIR and TIR spectrometry. ClONO2 lines around 5.7, 7.7 and 12.5 micrometers
Cloud cover	5 - marginal	Discontinuous coverage.	TIR channel(s)
Cloud top height	2 - very high	Discontinuous coverage.	MWIR and TIR spectrometry in window and water vapour band (for emissivity) to estimate cloud top height from its temperature
Cloud top temperature	1 - primary	Discontinuous coverage.	TIR spectrometry in window and water vapour band (for emissivity)
CO2 mole fraction	3 - high	Cloud sensitive.. Coarse vertical resolution.	TIR spectrometry. CO2 lines around 15 micrometers
COS	3 - high	Cloud sensitive.. Coarse vertical resolution.	TIR spectrometry. COS lines around 11.6 micrometers
Downward long-wave irradiance at Earth surface	2 - very high	Cloud sensitive.. Highly indirect.	MWIR and TIR spectrometry including water vapour and CO2 bands
H2O	2 - very high	Cloud sensitive.. Coarse vertical resolution.	MWIR/TIR spectrometry in a range centred on 6.3 micrometers
Height of the top of PBL*	5 - marginal	Cloud sensitive.	TIR spectrometry. Height of PBL top from temperature profile
Height of the tropopause*	5 - marginal	Cloud sensitive.	TIR spectrometry. Height of tropopause from temperature profile
HNO3	3 - high	Cloud sensitive.. Coarse vertical resolution.	MWIR and TIR spectrometry. HNO3 lines around 5.9, 7.6 and 11.3 micrometers
Land surface temperature	4 - fair	Cloud sensitive.. Coarse spatial resolution.	TIR spectrometry (inclusive of several narrow-bandwidth windows and absorption bands for atmospheric corrections)
Long-wave Earth surface emissivity	2 - very high	Cloud sensitive.. Long time series needed.	MWIR and TIR spectrometry measuring land temperature in many windows. Emissivity inferred by statistical analysis
N2O mole fraction	3 - high	Cloud sensitive.. Coarse vertical resolution.	TIR spectrometry. N2O lines around 7.7 micrometers
N2O5	3 - high	Cloud sensitive.. Coarse vertical resolution.	MWIR and TIR spectrometry. N2O5 lines around 5.8 and 8 micrometers
NO	3 - high	Cloud sensitive.. Coarse vertical resolution.	MWIR spectrometry. NO lines around 5.3 micrometers
NO2	3 - high	Cloud sensitive.. Coarse vertical resolution.	TIR spectrometry. NO2 lines around 6.1 micrometers
NO2 Total Column	4 - fair	Cloud sensitive.	TIR spectrometry. NO2 lines around 6.1 micrometers
O3	3 - high	Cloud sensitive.. Coarse vertical resolution.	TIR spectrometry. Ozone band around 9.7 micrometers
O3 Total Column	3 - high	Cloud sensitive.	TIR channel(s). Ozone lines in band around 9.7 micrometers
PAN	3 - high	Cloud sensitive.. Coarse spatial resolution.	MWIR and TIR spectrometry. PAN lines around 5.7, 8.6 and 12.5 micrometers
PSC occurrence	2 - very high	Coarse vertical resolution.	MWIR and TIR spectroscopy
Sea surface temperature	3 - high	Cloud sensitive.	TIR spectrometry (inclusive of several narrow-bandwidth windows and absorption bands for atmospheric corrections)
SF6	3 - high	Cloud sensitive.. Coarse vertical resolution.	TIR spectrometry. SF6 lines around 10.5 micrometers
SO2	2 - very high	Cloud sensitive.. Coarse vertical resolution.	TIR spectrometry. SO2 lines around 7.3 and 8.6 micrometers
SO2 Total Column	2 - very high	Cloud sensitive.	TIR spectrometry. SO2 lines around 7.3 and 8.6 micrometers
Specific humidity*	1 - primary	Cloud sensitive.	TIR spectrometry in the water vapour band around 6.3 micrometers
Integrated Water Vapour (IWV)*	2 - very high	Cloud sensitive.	TIR spectrometry in the bands around 6.3 and above 11 micrometers
Temperature of the tropopause*	4 - fair	Cloud sensitive.	TIR spectrometry. Tropopause temperature from temperature profile
Upward spectral radiance at TOA	3 - high	Missing all Short-waves.	MWIR and TIR spectrometry resolving water vapour lines in the bands around 6.3 micrometers and 11 to 15 micrometers
Upward long-wave irradiance at TOA	3 - high	Spectral interpolation needed.	TIR spectrometry covering the 11 micrometers window region and the water vapour and CO2 bands around 6.3 and 15 micrometers
Wind (horizontal)	3 - high	Limited to high latitudes.. Cloud sensitive.	TIR spectrometry in the 6.3 micrometers band. Wind profile in clear air by tracking water vapour patches in the humidity profile
Upward long-wave irradiance at Earth surface	2 - very high	Cloud sensitive.. Highly indirect.	TIR spectrometry covering the 11 micrometers window region and the water vapour and CO2 bands around 6.3 and 15 micrometers