#cesbio — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #cesbio, aggregated by home.social.
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😔
https://fediscience.org/@ohagolle/111478084515715773
@ohagolle - After three successive summer droughts in 2018, 2019, and 2020, the dieback of oaks has considerably increased in France.Florian Mouret et al from #CESBIO and #Orleans University, have set-up a new method to monitor oak dieback, using #Sentinel2 #EarthObservation data as input, with terrain measurements to train the classification model. uses the #Iota2 opensource framework to process large multi-temporal #timesSries
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After three successive summer droughts in 2018, 2019, and 2020, the dieback of oaks has considerably increased in the center of France.
Florian Mouret and his colleagues from #CESBIO and #Orleans University, have set-up a new method to monitor oak dieback, using #Sentinel2 #EarthObservation data as input, with terrain measurements to train the classification model.
The method uses the #Iota2 opensource framework to process large multi-temporal #timesSeries
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In two studies Julien Michel (#CNES & #CESBIO) showed:
▶️ that data fusion methods can be used to merge #Sentinel2 with #SentinelHR, providing time series with 2 m resolution and 5 days revisit with rmse errors below 0.01 in reflectance even for pixels with a high gradient▶️ that these methods still provide good results when the #SentinelHR revisit is reduced from 12 to 30 days.
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At #CESBIO laboratory, we promote a new very high resolution mission, #SentinelHR, to complement #Sentinel2 with 2 m resolution images acquired with a systematic and global revisit every 10 to 30 days and 4 spectral bands.
We are ready to trade revisit for resolution, as we feel that landscape details with high frequency (buildings, trees, hedges, roads) tend to change less than the low frequency details. But demonstrating it needed work.
We made two studies to try to prove it.
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The #Multitemp blog (Séries Temporelles in French) is just 10 years old ! It was started to provide information and news around the SPOT4 (Take5) experiment in preparation to #Sentinel2. And as we had fun writing the posts, we went on, with my co-editor from #CESBIO , Simon Gascoin ( @[email protected] )
More than 850 000 pages have been read so far, on our almost 1000 posts !
https://labo.obs-mip.fr/multitemp/multitemp-blog-is-now-10-years-old/
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Claire Pascal successfully defended her PhD one month ago at #CESBIO. She studied how the current and future #satellites allow to monitor the hydrological cycle at the scale of a large Indian region: #Telangana
This blog post tries to summarize the results: https://labo.obs-mip.fr/multitemp/feedback_hydrology_remotesensing/
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OK, it's complex, but it also brings benefits. My lab, #cesbio, has members from 5 different employers
CNES the French Space Agency
CNRS, the largest research institute
INRAE, agronomy research inst
IRD, research for development
And Toulouse UniversityCNES (my employer) brings a few researchers, data and knowledge on satellites. It gets a lot of feedback from advanced research users, requirements for new missions, processors, applications...
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@CopernicusEU
With methods developped at our lab #cesbio -
Hi fellow migrators !
I am an #engineer at the French Space Agency @cnes, and a #researcher at #Cesbio laboratory. I work on time series of #optical #remotesensing images such as #Sentinel2 or #Landsat. I am now #VENųS PI.My specialty is #atmosphericCorrection #CloudDetection, and I am the creator of #MAJA_L2A processor.
I am now the head of Observation Systems team in #Cesbio, not doing much #research anymore but try to help colleagues do their research.
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Hi fellow migrators !
I am an #engineer at the French Space Agency @cnes, and a #researcher at #Cesbio laboratory. I work on time series of #optical #remotesensing images such as #Sentinel2 or #Landsat. I am now #VENųS PI.My specialty is #atmosphericCorrection #CloudDetection, and I am the creator of #MAJA_L2A processor.
I am now the head of Observation Systems team in #Cesbio, not doing much #research anymore but try to help colleagues do their research.
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Hi fellow migrators !
I am an #engineer at the French Space Agency @cnes, and a #researcher at #Cesbio laboratory. I work on time series of #optical #remotesensing images such as #Sentinel2 or #Landsat. I am now #VENųS PI.My specialty is #atmosphericCorrection #CloudDetection, and I am the creator of #MAJA_L2A processor.
I am now the head of Observation Systems team in #Cesbio, not doing much #research anymore but try to help colleagues do their research.
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@ohagolle Salut Olivier, super content de te voir ici !
Toujours pas eu le temps de finaliser mon article de vulgarisation sur #Iota2 (actuellement en brouillon https://git.42l.fr/HugoTrentesaux/blog/src/branch/master/content/science/iota2.md).
Mais je garde un très bon souvenir du #CESBIO et de mes lectures sur le blog #multitemp :) -
Je commence tout juste à le réaliser mais je suis #libre ! J'ai fini mon contrat au #CESBIO et je ne renouvelle pas pour pouvoir me consacrer à plein temps à la #monnaielibre et à #duniter.
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Job offer in #Toulouse to work at #CESBIO on the #freesoftware Iota2.
#opendata #cartography #python
If you know someone who's interested, don't hesitate to put her/him in contact with me ^^
I can give more details on the lab and the team atmosphere.