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Gregory Giuliani

@greggiuliani.bsky.social

1K followers 170 following 14 posts

Earth Observations enthusiast, Environmentalist, Land Change Science & Climate impacts | Senior Lecturer at the Institute for Environmental Sciences of the University of Geneva, Switzerland.

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Environmental science 37%

Computer science 27%

Posts Media Videos Starter Packs

Gregory Giuliani @greggiuliani.bsky.social · Aug 1

#ImageOfTheMonth #SwissDataCube | Today is the #Swiss National Day refering to a historic alliance concluded in 1291 by three cantons on the shore of Lake Lucerne.
#Sentinel-2 true color composite acquired in June 2025. #Switzerland #EO4impact #remotesensing #earthobservation

Gregory Giuliani @greggiuliani.bsky.social · Jun 30

#ImageOfTheMonth #SwissDataCube | Lakes #Thun (Left) and #Brienz (right) appear noticeably different due to their distinct colors, primarily caused by their different sediment and glacial influences. #Sentinel-2 #Switzerland #EO4impact #remotesensing #earthobservation

Reposted by Grégory Giuliani

SpacePolicyOnline @spacepolicyonline.bsky.social · Jun 4

USGS, which operates the Landsat satellites, just announced that Landsat 7 was officially decommissioned today. Landsat 8 and 9 continue operations.
www.usgs.gov/news/nationa...

End of an Era: Landsat 7 Decommissioned After 25 Years of Earth Observation

After 25 years of capturing Earth's changing landscape, the Landsat 7 satellite received its final transmission from the U.S. Geological Survey and was officially decommissioned June 4, closing a rema...

www.usgs.gov

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Gregory Giuliani @greggiuliani.bsky.social · Jun 2

#ImageOfTheMonth #SwissDataCube | This #Sentinel-2 false-color composite shows the extension of the dramatic event that recently happened in the #Lötschental after the collapse of the Birch glacier #Switzerland: www.theguardian.com/environment/... #EO4impact

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Reposted by Grégory Giuliani

fdenhez.bsky.social @fdenhez.bsky.social · May 16

Également dans @mariannelemag.bsky.social (le "print"), le portrait d'un chercheur suisse qui marie sols, eau, neige et satellite pour faire de la prévision de catastrophes, et ne baisse pas les bras. Il est toujours plein d'espoir, @greggiuliani.bsky.social.

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Gregory Giuliani @greggiuliani.bsky.social · May 5

#ImageOfTheMonth #SwissDataCube | Using #Sentinel-2 and other #Environmental descriptors from #swisstopo we are able to produce a consistent 10m #LandCover map of the entire #Switzerland. This will enable tracking changes in a very detailed way. #EO4impact

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Gregory Giuliani @greggiuliani.bsky.social · Apr 15

New paper | Using the Snow Observation from Space algorithm we produced a 37-year monthly time-series of snow cover derived from Landsat and Sentinel-2 for #Switzerland
Link to publication: doi.org/10.1038/s415...
#SwissDataCube #UNIGE #ISE #GRIDgva #EO4impact #ClimateChange

A 37 years [1984–2021] Landsat/Sentinel-2 derived snow cover time-series for Switzerland - Scientific Data

Scientific Data - A 37 years [1984–2021] Landsat/Sentinel-2 derived snow cover time-series for Switzerland

doi.org

Gregory Giuliani @greggiuliani.bsky.social · Apr 14

Very interesting presentation from Dr. Simon Hook #NASA #JPL on existing and future thermal missions. #ECOSTRES looks particularly interesting #SBSR conference #Salvador #Bahia

Gregory Giuliani @greggiuliani.bsky.social · Apr 8

After two years, back at #INPE to continue the great collaboration between the Brazil and Swiss Data Cubes on Satellite Image Time-Series #SITS

Gregory Giuliani @greggiuliani.bsky.social · Mar 31

#ImageOfTheMonth #SwissDataCube | In this Sentinel-2 true color composite, you can see probably the most famous peak of Europe - the #Matterhorn located at border between #Switzerland and #Italy.

Gregory Giuliani @greggiuliani.bsky.social · Mar 7

No other words needed...
#StandUpForScience

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Gregory Giuliani @greggiuliani.bsky.social · Mar 1

#ImageOfTheMonth #SwissDataCube | A recent study in @nature.com has shown that the pace of glacier melting is accelerating: doi.org/10.1038/s415....
The Aletsch Glacier is an icon of the Swiss Alps and its significant decrease in 40 years is a clear consequence of #ClimateChange. #EO4impact

Gregory Giuliani @greggiuliani.bsky.social · Feb 13

New paper | Using the Snow Observation from Space algorithm and climate projections, we found that snow-free areas in #Switzerland could expand btw 22 to 43% by 2100.
Link to publication: doi.org/10.3389/frse...
#SwissDataCube #UNIGE #ISE #GRIDgva #EO4impact #ClimateChange

Frontiers | Past and future trends in swiss snow cover: multi-decades analysis using the snow observation from space algorithm

doi.org

Gregory Giuliani @greggiuliani.bsky.social · Feb 3

#ImageOfTheMonth with the #SwissDataCube | Prolonged heat and dryness conditions can lead to #drought, serisously affecting lakes like the "Lac des Brenets". This lake experience important water shortages and its level is declining as seen on this #Sentinel2 false color composite. #EO4impact

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Gregory Giuliani @greggiuliani.bsky.social · Jan 6

With the start of the new year, I will try to publish every month a picture of #Switzerland #landscape as seen from space using the #SwissDataCube.
We start with a cloud-free mosaic of the country using all available #Sentinel2 images for 2020. #EO4impact

Gregory Giuliani @greggiuliani.bsky.social · Dec 9

New paper | Benefiting from the long time-series of #Landsat data for #snow cover mapping as always been challenging. We developed an innovative approach to maximize its use: www.sciencedirect.com/science/arti... using the #SwissDataCube
#UNIGE #ISE #GRIDgva #EO4impact #ClimateChange

Snow Observation from Space: An approach to improving snow cover detection using four decades of Landsat and Sentinel-2 imageries across Switzerland

Landsat and Sentinel-2 satellites offer significant advantages for monitoring snow cover over mountainous countries like Switzerland. Starting in the …

www.sciencedirect.com

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