In a recent study, Roland and Bartlett et al. (2024) showed that the Antarctic Peninsula is « greening », i.e. the area covered by vegetation is growing. This article published in Nature Geoscience was featured in many media outlets. The authors drew this conclusion from the analysis of 35 years of Landsat images. More specifically, they computed […]
Le CNES a publié sur LinkedIn ces jolies photos du Centre Spatial de Toulouse après le confinement. Grâce aux satellites d’observation de la Terre, les ingénieurs du CNES sont capables d’étudier la végétation aux quatre coins du globe. Mais, les cordonniers sont souvent les plus mal chaussés… Pourraient-ils étudier leur propre pelouse par satellite ? […]
Last year, in this post, I showed the comparison of two Sentinel-2 images of Saint Barthélemy in the Caribbean before and after the powerful Hurricane Irma. A new feature in the EO Browser enables to plot the evolution of the mean NDVI within a polygon. I drew a rough polygon of Saint Barthélemy to check […]
The Global Imagery Browse Services is an API provided by the NASA to access its vast collection of Earth Observation products. It’s convenient to use the Worldview online data browser to get the right URL template. Just click on « Take a snapshot » and copy the URL. For example the following URL allows you to download […]
Sentinel-2A a capturé une image de Saint Barthélemy le 12 septembre, soit 6 jours après le passage de l’ouragan Irma. Une autre image avait été acquise juste avant le passage de l’ouragan le 04 septembre par sa petite sœur Sentinel-2B. Le contraste entre ces deux images est saisissant. Ici j’ai utilisé un rendu qui mixe […]
Texas had the super bowl in 2017 but California got the super bloom! After its worst drought in 1,200 years, California is now experiencing one its wettest year. The Sierra Nevada snowpack is currently one of the biggest ever recorded. In February, severe winter rainfalls caused the evacuation of many California residents under the threat of […]