landslide
The 7.5 magnitude Palu earthquake in 2018 was a disaster that left 2,081 people dead, 1,309 missing and 206,494 displaced. An impressive surface slip associated with the earthquake was visible in optical satellite imagery like Sentinel-2. I used this case to test the new tool that has been made availabe by the PEPS team (https://peps.cnes.fr/). This tool enables […]
In English
We have been waiting for a long long time, but it seems the production of geometry refined Sentinel-2 L1C will start by next month. I have heard ESA plans to reproduce the whole data set later on, but the schedule has not been announced yet. « Start of the geometry-refined production using the Global Reference Image […]
In English
=> In 2018, Olivier Hagolle presented in this article the Sentinel-HR concept : an optical satellite in the metric spatial resolution class providing global, repetitive, systematic observations with an open access policy. By doing so, he continued the work of Gérard Dedieu who had already advocated for this concept in the previous years. Thanks to […]
En Français
=> En 2018, Olivier Hagolle vous avait parlé dans cet article du concept Sentinel-HR : une mission de résolution métrique fournissant des observations globales, répétitives, systématiques et libres d’accès. Il reprenait ainsi le flambeau de Gérard Dedieu qui portait déjà ce concept dans les années précédentes. Fruit de ces années de sensibilisation, une étude de […]
In English
=> MAJA est un logiciel de détection de nuage et de correction atmosphérique de qualité, développé par le CNES et le CESBIO, avec des contributions du DLR. Il est codé par CS GROUP. MAJA est utilisé pour traiter les données Sentinel-2 par le Pôle Theia, par les projets Sen2Agriet Sen4cap de l’agence spatiale Européenne, par […]
In English
=> MAJA is the high quality cloud detection and atmospheric correction code developped by CNES and CESBIO, with contributions from DLR, and coded by CS GROUP. It is used within Pôle Theia, Sen2Agri, Sen4cap, DLR, EEA Snow&Ice, KERMAP… to process #Sentinel2 time series. It’s been a long time since we wanted to make MAJA available […]
In-situ
A sunny Sunday just after an exceptional late-September snowfall… That’s already a stroke of luck. But the passage of Sentinel-2 on the same day makes this weekend even more special! The snow cover map was immediately processed and distributed by the new Copernicus Snow & Ice monitoring service powered by Cesbio’s algorithms! You can explore […]
En Français
L’estimation du rendement La connaissance du rendement agricole, que ce soit en prévision (avant la fin de la saison) ou en rétrospective (après la récolte) a beaucoup d’intérêt applicatif. On peut par exemple devenir riche en spéculant sur les marchés, et on peut prévoir des crises alimentaires (et aussi devenir riche en spéculant sur les […]
water
The South-Indian states suffer from insufficient -yet abundant- monsoon rainfalls that do not fulfill any more the current urban and agricultural water needs. During the last decades, fast urban population growth has disrupted existing tap-water supply systems in big cities, challenging communities with regular tap-water shortages (last big one in Chennai). In the same time, […]