[MUSCATE News] Some bad and good news

 

The bad news

The MUSCATE ground segment that delivers Sentinel-2A products has had several issues these past two weeks. We have had some performance issues with the data base which tells MAJA processor which product must be processed next. These lower performances caused traffic jams and disruptions in the data production, and the system crashed quite frequently. Because of these crashes, our real time production of L2A and snow products has currently a delay above one week for most sites.The teams are working hard to find the roots of these issues and correct them. We are very sorry for the inconvenience this may cause to your applications with good Level2A data or snow products.

The good news : cirrus correction

The Sentinel-2 Level 2A data which are being produced now have a new version number: version 1.8. The novelty with these products is the cirrus clouds correction which was implemented within MAJA thanks to our collaboration with DLR (the German aerospace agency) and thanks to ESA funding. The quality of the correction is generally good, but depends on the cirrus cloud thickness, and does not correct for the underlying shadow. As a result, we only apply the correction where a cirrus cloud has been detected, and we keep these pixels flagged as cloudy, even if the correction is good.  For now, we advise you to use these pixels only after having checked visually the correction. If you are processing data automatically without any visual control, our advise is to go on discarding these pixels, except if you do not need a high accuracy.    

Plus d'actualités

The missing link to valorize CESBIO’s applicative research works

=>  My colleagues at CESBIO are extremely creative! Over the past ten years, they have developed a wide range of new products and methods for extracting information from Copernicus data. They don’t just develop and validate the method on a few sites; they continue their work until they have produced data for the whole of […]

Le chaînon manquant dans la valorisation des travaux de recherche en télédétection

=> Mes collègues du CESBIO sont très créatifs ! Ils ont mis au point, au cours des dix dernières années, un grand nombre de nouveaux produits et de méthodes d’extraction de l’information à partir des données Copernicus (Sentinel-1 et 2). Et bien souvent, ils ne s’arrêtent pas à la mise au point de la méthode […]

Évolution du jour de déneigement dans les Alpes françaises et les Pyrénées

Les socio-écosystèmes des Alpes et des Pyrénées dépendent étroitement des fluctuations annuelles du manteau neigeux. En particulier, le moment de l’année où la neige disparait détermine le début de la saison de croissance de la végétation de montagne et donc la période des estives. Le changement climatique est en train de bouleverser ce rythme saisonnier. […]

Rechercher