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Date: Sun, 19 Nov 23 08:30:06 +0000
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Le 19/11/2023 à 09:00, Paul Aubrin a écrit :
>
> Les capteurs des flotteurs Argo sont munis de thermomètres, ils mesurent 
> la température de l'eau des premiers centimètres de la surface de l'océan.
> Les capteurs des satellites mesurent des niveaux de radiation, ils 
> mesurent la température du premier millimètre de la surface de l'océan.
> 
> Ce sont deux "températures moyennes" différentes de la surface des 
> océans. Elles ne sont pas forcément comparables.

Et alors ?

<https://www.copernicus.eu/en/access-data/copernicus-services-catalogue/satellite-sea-surface-temperature-complete>
L'objectif des mesures satellitaires n'est pas de les comparer à l'effet 
de votre pipi dans l'eau de la plage, mais de suivre leur *évolution* 
depuis *1981*.

- Analysed sea surface temperature
Global and spatially complete estimate of daily average ocean temperature 
adjusted to a standard depth of 20 cm. This variable is only available in 
the Level 4 product.

- Sea surface temperature at depth
Ocean temperature adjusted to a standard depth of 20 cm and 10:30 local 
time (equivalent to daily average). This temperature is derived from the 
skin SST measurements and allows comparison with in situ observations. 
This variable is only available in Level 2 and Level 3 products.

- Skin sea surface temperature
Ocean temperature at a depth of approximately 10 μm. This is the 
temperature measured by satellite infrared radiometers. This variable is 
only available in Level 2 and Level 3 products.