SPOT5 (Take5) L1C and L2A weekly updated

 During the summer, the processing of SPOT5 (Take5) started to be updated weekly by THEIA processing Center in CNES. There is now a production lag of only 3 weeks, and the latest date available on the server was acquired on the 12th of August. If you have been using these data, and had interesting preliminary results, or if you did an in-situ campaign, it would be very nice to send us your early results to be added on this blog. You just need to send me only one text page with one or two images, either in French or English, I would translate it. 

Here is an example of a very interesting time series with the quickest changes I have ever seen. It is due to rice mono culture, in the Shandong region in China. End of May (May the 28th),  the rice is green, end of July (July the 27th), the rice is also green, but meanwhile, it has been cropped and sowed again. With a lower repetitivity, one might miss the images in the middle, and think it is a long lasting crop cycle.

 

Plus d'actualités

Pléiades © CNES 2026 Distribution Airbus DS

Clear-sky Pléiades acquisition of the Rasuwa landslide source area

After many attempts, CNES’s Pléiades satellites finally captured a clear-sky view of the source area of the devastating flood in Nepal. The stereoscopic acquisition enables the generation of a high-resolution DEM and consequently a geometrically accurate orthorectified image. Although I’m not involved in the scientific analysis, I could not resist taking a closer look at […]

New clear-sky image of the Rasuwa rock-ice avalanche

On 08 Sep 2026, Sentinel-2 acquired a clear-sky image near the release area of the landslide which caused the catastrophic flood in Nepal. Using this image and a pre-event digital elevation model (Berthier 2026) we can analyze the upper part of the avalanche runout profile. The block of rock and ice was released near 5120 […]

Combien de temps met la surface à se réchauffer après le passage d’un nuage ?

Combien de temps met le fût du canon à se refroidir ? Fernand Raynaud => Cette citation vient du fameux sketch de Fernand Raynaud, elle est soi-disant tirée d’un manuel militaire à destination des soldats: Le sketch est un peu long, je vous rappelle la réponse : un certain temps. Nous avons étudié une question […]

Rechercher