Spectrometer with four very-narrow NIR/SWIR bands, centred on 1608 and 2037 nm (CO2); and 764 and 1273 nm (O2). Resolving power λ/Δλ = 25000 [see detailed characteristics below]
Similar to OCO, with an additional O2 band at 1273 nm
Cross-track: three parallel 4.5-km IFOV's for a comprehensive 13.5 km swath. Along-track sampling at 9.km intervals. Over land the pointing is close to nadir, over ocean it is tilted towards sunglint.
4.5 km at s.s.p.
Coverage / Cycle
Nearly-global in 21 days
Flown on an R&D satellite
≥2023 to ≥2028
Resolving power (λ/∆λ )
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
Earth observation instrument Passive optical radiometer or spectrometer Cross-nadir shortwave (UV/VIS) sounder
Subcomponent 1 UV/VIS/NIR nadir sounder
Tentative Evaluation of Measurements
The following list indicates which measurements can
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
Variable Relevance for measuring this variable Operational limitations Explanation
CO2 mole fraction 1 - primary Cloud sensitive.. Daylight only. Very-high resolution SWIR spectrometry CO2 lines around 1.6 and 2.1 micrometers. Specifically designed for CO2.