WMO OSCAR | Details for Instrument ERBR

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Instrument: ERBR

Instrument details

Acronym	ERBR
Full name	Earth Radiation Budget Radiometer
Purpose	Earth radiation budget
Short description	Two channels, total spectum and shortwave component [see detailed characteristics below]
Background	New development
Scanning Technique	Mechanical, 3-axis stabilised satellite, E-W continuous, S-N stepping
Resolution	50 km
Coverage / Cycle	5 min
Mass		Power	Data Rate

Providing Agency	Roscosmos
Instrument Maturity	Flown on operational programme
Utilization Period:	2035 to 2045
Last update:	2021-06-14

Detailed characteristics

Channel	Spectral interval	Noise Equivalent Radiance	Absolute accuracy	SNR
Short-wave	0.32 - 4.0 µm	...... W m^-2 sr^-1	...... W m^-2 sr^-1	,,,,,,,
Total radiance	0.32 - 30 µm	…… W m^-2 sr^-1	...... W m^-2 sr^-1	.......

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

Electro (RosHydroMet)
- Electro-M N1 (see instrument status) 2035 - 2045
- Electro-M N2 (see instrument status) 2035 - 2045
- Electro-M N3 (see instrument status) 2035 - 2045

Instrument classification

Earth observation instrument
Passive optical radiometer or spectrometer
Broadband Earth radiation radiometer

WIGOS Subcomponents

Subcomponent 1
Absolutely calibrated broadband radiometers, and TSI and SSI radiometers
Broadband radiometer (for ERB)

Mission objectives

Primary mission objectives

Upward long-wave irradiance at TOA
Upward short-wave irradiance at TOA

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
Upward short-wave irradiance at TOA*	2 - very high	Information on BRDF needed.	SW and Total (SW+LW) broadband channels. Frequent sampling (GEO) enable capturing diurnal variations, particularly due to clouds. Also, changing solar incidence angle helps with irradiance computation
Upward long-wave irradiance at TOA*	2 - very high	No specific limitation.	LW radiance achieved by difference between Total and SW. Frequent sampling (GEO) enable capturing diurnal variations due to clouds.and water vapour rapid evolution