BackForwardInstrument:  CZCS 

Instrument details
Acronym CZCS
Full name Coastal Zone Colour Scanner
Purpose Ocean colour monitoring
Short description 5 narrow-band channels in VIS/NIR + 1 TIR channel [see detailed characteristics below]
Background New development, prototype of instruments for ocean colour monitoring
Scanning Technique Mechanical, cross-track, 1600 km swath
Resolution 825 m s.s.p.
Coverage / Cycle Near-global coverage every day, in daylight
Mass 27 kg Power 11.4 W Data Rate 800 kps

 

Providing Agency NASA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1979 to 1994-08-01
Last update: 2012-11-29
Detailed characteristics

Central wavelength

Bandwidth

SNR or NE∆T @ specified input

443 nm

20 nm

150 @ 54.1 W m-2 sr-1 µm-1

520 nm

20 nm

140 @ 35.0 W m-2 sr-1 µm-1

550 nm

20 nm

125 @ 28.6 W m-2 sr-1 µm-1

670 nm

20 nm

100 @ 13.4 W m-2 sr-1 µm-1

750 nm

100 nm

100 @ 10.8 W m-2 sr-1 µm-1

11.5 μm

1 μm

0.22 K @ 270 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

Instrument classification
  • Earth observation instrument
  • Passive optical radiometer or spectrometer
  • Moderate resolution optical imager
Mission objectives
Primary mission objectives
  • Colour Dissolved Organic Matter (CDOM)
  • Ocean Diffuse Attenuation Coefficient (DAC)
  • Ocean chlorophyll concentration
  • Ocean suspended sediments concentration
  • Oil spill cover
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Tentative 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
VariableRelevance for measuring this variableOperational limitationsExplanation
Downward short-wave irradiance at Earth surface5 - marginalCloud sensitive.. Highly indirect.VIS and NIR channels
Sea surface temperature5 - marginalCloud sensitive.TIR window channel(s) around 11 micrometers .
Sea-ice cover4 - fairCloud sensitive.VIS, NIR (for contour enhancement) and TIR channels
Wind (horizontal)5 - marginalLimited to high latitudes.. Cloud or water vapour tracers needed.TIR channel(s) around 11 micrometers window
Aerosol column burden3 - highCloud sensitive.. Daylight only.VIS (with narrow bandwidth) and NIR channels including 760 nm for high-level aerosol
Aerosol Optical Depth3 - highCloud sensitive.. Daylight only.VIS (with narrow bandwidth) and NIR channels including 760 nm for high-level aerosol
Aerosol effective radius3 - highCloud sensitive.. Daylight only.VIS (with narrow bandwidth) and NIR channels including 760 nm for high-level aerosol
Aerosol mass mixing ratio3 - highCloud sensitive.. Daylight only.VIS (with narrow bandwidth) and NIR channels including 760 nm for high-level aerosol
Aerosol type3 - highCloud sensitive.. Daylight only.VIS (with narrow bandwidth) and NIR channels including 760 nm for high-level aerosol
Aerosol volcanic ash3 - highCloud sensitive.. Daylight only.VIS and NIR channels including 760 nm for high-level ashes
Aerosol volcanic ash (Total column)3 - highCloud sensitive.. Daylight only.VIS and NIR channels including 760 nm for high-level ashes
Leaf Area Index (LAI)4 - fairCloud sensitive.. Daylight only.VIS and NIR channels. LAI inferred from NDVI
Cloud cover3 - highNo specific limitation.VIS, NIR and TIR channels
Cloud top temperature5 - marginalNo specific limitation.TIR window channel(s)
Cloud top height5 - marginalDaylight only.NIR channels to estimate the total-column O2 above the cloud top as measured around 760 nm
Cloud type4 - fairDaylight only.VIS and TIR channels
Cloud optical depth4 - fairLow-density cloud only.. Daylight only.VIS and NIR channels
Upward short-wave irradiance at TOA5 - marginalSpectral interpolation needed.. Information on BRDF needed.VIS and NIR channels
Short-wave cloud reflectance5 - marginalNo specific limitation.VIS and NIR channels
Earth surface albedo5 - marginalCloud sensitive.VIS channels
Photosynthetically Active Radiation (PAR)4 - fairCloud sensitive.VIS channels, range undersampled
Fraction of Absorbed PAR (FAPAR)4 - fairCloud sensitive.VIS channels including Red at 700 nm
Ocean chlorophyll concentration 5 - marginalCloud sensitive.. Daylight only.A few narrow-bandwidth VIS channels, suitable for a few water types, mainly in open ocean
Colour Dissolved Organic Matter (CDOM)5 - marginalCloud sensitive.. Daylight only.A few narrow-bandwidth VIS channels, suitable for a few water types, mainly in open ocean
Ocean suspended sediments concentration5 - marginalCloud sensitive.. Daylight only.A few narrow-bandwidth VIS channels, suitable for a few water types, mainly in open ocean
Ocean Diffuse Attenuation Coefficient (DAC)5 - marginalCloud sensitive.. Daylight only.A few narrow-bandwidth VIS channels, suitable for a few water types, mainly in open ocean
Oil spill cover5 - marginalCloud sensitive.. Daylight only.VIS channels with narrow bandwidth
Normalised Difference Vegetation Index (NDVI)3 - highCloud sensitive.VIS and NIR channels
Biomass5 - marginalCloud sensitive.. Index only.. Daylight only.VIS and NIR channels. Biomass inferred from NDVI
Soil moisture at surface4 - fairCloud sensitive.. Index only.VIS and TIR window channels. Soil moisture inferred from thermal inertia
Fire fractional cover4 - fairCloud sensitive.. Coarse spatial resolution.VIS and TIR channels
Fire temperature5 - marginalCloud sensitive.. Coarse spatial resolution.TIR channels
Fire radiative power5 - marginalCloud sensitive.. Coarse spatial resolution.TIR channels
Snow cover4 - fairCloud sensitive.. Daylight only.VIS and NIR channels