In English

THEIA : a tricky transition period caused production delays, but the production resumes

=> Update the 8th of January, 2024 : A new change in the interface from the Copernicus Dataspace on January the 2nd, implemented without prior notice, has caused a new interruption of our downloads, and the real time processing at THEIA, at a moment when no one was available to change things on the our […]

21.12.2023

A new operational method for monitoring oak dieback in the Centre-Val de Loire region

=>  The results presented here are based on work published in the journal paper: F. Mouret, D. Morin, H. Martin, M. Planells and C. Vincent-Barbaroux, « Toward an Operational Monitoring of Oak Dieback With Multispectral Satellite Time Series: A Case Study in Centre-Val De Loire Region of France, » in IEEE Journal of Selected Topics in Applied […]

22.11.2023

Glacier changes in the Lingtren–Khumbutse catchment using Pléiades

The iconic Khumbu Glacier in Nepal is fed by several tributaries, such as this branch in the Lingtren–Khumbutse catchment. Recently a new Pléiades triplet covering the Khumbu region was added into the DINAMIS repository (acquisition date 22 Oct 2023). There is another triplet in the same area acquired on 11 Mar 2016 hence we can […]

13.11.2023

The pros and cons of systematic global processing

=>  As the resolution of our satellite missions improve, the data volume of output products increases, and the share of the computing and storage costs of its products increases too. Let’s assume we are preparing a new satellite mission, for instance a Sentinel-like mission, with the hope of potential use by operational or private users, […]

04.10.2023

Test of spatio-temporal fusion of Sentinel-2 New Generation data with a potential VHR mission

Three years ago, we started the phase-0 study of a mission named Sentinel-HR : S-HR would be a satellite mission to complement Sentinel-2 new generation (S2-NG) with In that study, one of our assumptions was that a lower revisit frequency than that of Sentinel-2 was sufficient. This seems possible because, in most cases, the high frequency […]

28.09.2023

The rabbit of Alice in Wonderland is late, showing a big clock

[MUSCATE & THEIA] Production of Sentinel-2 L2A is late

Update on 25 september 2023 : we have no backlog left in Europe, and the system is catching up on the other regions of the world Update on 9 september 2023 : 25 days processed in a week over France ! We are catching up a bit CNES has bought and built a new HPC […]

05.09.2023

HR TIR DA IRL (High Resolution Thermal Infra-Red Directional Anisotropy In Real Life)

=>  In the frame of the preparation of the Trishna mission, one important question is : do we have to correct for directional effects, and how should we do it ? Some of you may be familiar with the so-called hotspot effect in the reflective domain, which is well illustrated on our blog. Well in […]

01.09.2023

Global map of irrigated areas

It’s not easy to find a good cartographic representation of the global irrigated land, therefore I made my own map using data from Meier et al. (2018). The raw resolution of the above product is 30 arcsec, i.e. 1 pixel covers about 1 km by 1 km at equator. Here, I aim to represent the […]

01.08.2023

An update on the use of CAMS 48r1

As announced in a previous post, the aerosol definition of the new 48r1 release of the CAMS auxiliary data has changed as compared to the former 47r1. At that time, we recommended to disable the use of CAMS data with MAJA before we adapt the code. Meanwhile, we have also tested the actual impact on […]

20.07.2023

Rechercher