In English

TropiSCO : a project to monitor tropical deforestation with Sentinel-1 on a weekly basis

=> Do we need to remind you of all the collateral damage linked to deforestation or the eco-system services that forests provide ? We have already talked about these in this blog (here and there too). Yet forests are disappearing at an alarming rate. Between 1990 and 2020, an area of forest equal to more […]

20.02.2021

What makes earthworms move ?

What makes earthworms move? Eartworms directly relies on soil water. Though, their activity seems completely disconnected to the variations of soil water content. Earthworms have a key role in soil dynamics. Among them, the anecic earthworms dig vertical galleries, ingest the earth located in the first meters of the ground and come to reject it […]

30.01.2021

Crop Irrigation, a new project labeled by the Space Climate Observatory

=>  The Space Climate Observatory (SCO) is an international initiative of the One Planet Summit, launched in June 2019, which is also a French initiative. The SCO brings together several space agencies around the world and international organizations (UNDP, ESA, UNEP). It aims at developping projects for local decision-makers to help them adapt to climate […]

20.01.2021

CESBIO’s blog frequentation drops, let’s blame the Covid !

=> 2020 has been a very difficult year for everyone (but it’s over 🙂 ), and the multitemp blog did not make an exception. Our audience has decreased by 13 to 20% depending on the statistics, compared to 2019, which already did not break records. It would be easy to blame the Covid, and I […]

04.01.2021

2021, a festive year at CESBIO ?

=> As almost everywhere, 2020 has been a gloomy year at CESBIO ! Even if CESBIO has been relatively spared by the disease, with a low number of mild cases so far, a few of our colleagues lost relatives and we send them our warmest thoughts ! The situation is probably the same for the […]

03.01.2021

Free and open data: fine, but who pays for the processing?

In the previous post, Olivier advocated for the open data policy in remote sensing. Although Oliver is facing some actual resistance because the Sentinel-HR mission would step on the toes of industrial champions, my feeling is that there is now a large consensus on this issue. The economic and social benefit of the open data […]

21.12.2020

How to make a mosaic of Theia snow products in three command lines

Assuming that you have downloaded from Theia and unzipped several products in the same directory. Assuming that you have a Linux OS with GNU Parallel, GDAL and OTB command line utilities installed..      Then, in your terminal, type: # Get the color table wget https://gitlab.orfeo-toolbox.org/remote_modules/let-it-snow/-/raw/75-lis-color-table-for-otb-not-updated-after-changed-nodata/hpc/LIS_SEB_style_OTB.txt # reproject all SNW raster products to a common […]

11.12.2020

Evaluating ERA5 wind direction with Copahue Volcano plume

Copahue is an active volcano in the Andes on the Chile-Argentina border. It erupted in 2016 and a plume of smoke was visible in many Sentinel-2 images during that period. Looking at these pictures I thought it would be fun to use that plume as a giant anemometer to evaluate climate model data. I extracted […]

27.11.2020

Copernicus Land – High-resolution Snow and Ice Monitoring: processing campaign status

  Snow and ice products are now available at high resolution (20×20 m) for all Europe in near-real time. However, Magellium is also processing the Sentinel-2 archive since September 2016. About 70% of Sentinel-2 observations have already been processed and 50 % are already published. This huge computation is being done on the CNES HPC […]

12.11.2020

Rechercher