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Clouds - cloud cover retrieved from infrared measurements at 10 minute intervals at CESAR observatory

Koninklijk Nederlands Meteorologisch Instituut (KNMI)via Nationaal Georegister · updated 8 January 2021
Open at nationaalgeoregister.nl

What's in it

Four cloud cover parameters are retrieved continuously from sky temperature measurements by a scanning infrared radiometer (NubiScope). These parameters are resp. total, low -, middle - and high level cloud cover. Only measurements 20 degrees above horizon are used to create a hemispherical cloud mask. The temperature deviation of a sky pixel from an estimated background sky temperature determines whether a pixel …

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