Installing TriOS: fixed/rotating

[Admin]

Radiometric in situ measurements using the RAMSES TriOS system, at the ship front (fixed):
- The ship should be oriented 135° relative to the sun azimuth angle and ship heading information (with frequency similar to that of TriOS measurements) should be available.
- Observations of the meteorological conditions are needed to control the quality of the measurements, and filter out or decide not to perform measurements in bad conditions:

1. Sun state: clouded, hazy, variable, clear
   
2. Sky state: high clouds, low clouds, colour of clouds, number of contrails, birds, sensors under shadow... etc
   
3. Weather state: fog, rain, thin rain, whitecaps... etc
   
4. Sea state: wave height, colour of water, ship shadow, floating matter, fronts, ship-induced resuspension...
   
5. Wind speed and direction
   
6. Latitude, longitude, date and time of these observations
   

Radiometric measurements can be further quality controlled, during the post-processing, by checking the inclination of the sensors, the time and spectral variability of the radiance and irradiance spectra.

[Admin]

TBD