Cyrielle Denjean
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cyrielledenjean.bsky.social
Cyrielle Denjean
@cyrielledenjean.bsky.social
95 followers 100 following 29 posts
Research scientist #CNRM @meteofrance.com @cnrs.fr working on roles of #aerosol - radiation - #cloud interactions in #climate and #weather using field observations
https://euburn.aeris-data.fr/
Posts Replies Media Videos
Reposted by Cyrielle Denjean
cleanairfund.bsky.social
Black carbon has us stuck in a vicious cycle: intensifying wildfires, harming health and degrading #AirQuality.

@climatevisuals.bsky.social new photo series exposes the super pollutant's devastating impacts across Brazil's Amazon region.

Explore and download for free 🔽
https://bit.ly/49FK6Fn
November 18, 2025 at 11:30 AM
Reposted by Cyrielle Denjean
francoisjobard.bsky.social
🚅 Bienvenue aux parcelles d'air nous ayant rejoints à bord de ce train #ArcticExpress, désormais sans arrêt jusqu'à #Paris. Nous remercions l'anticyclone polaire d'avoir permis les arrêts en mer de Beaufort, des Tchouktches, de Sibérie Orientale, de Laptev. L'icebar reste ouvert en voiture 3.
rétro-trajectoire du modèle HYSPLIT de la NOAA d'une parcelle d'air au-dessus de Paris jeudi 20 après-midi. La masse d'air provient directement de l'Arctique, en suivant scrupuleusement le méridien de Greenwich. https://www.ready.noaa.gov/HYSPLIT.php
November 17, 2025 at 9:34 AM
Reposted by Cyrielle Denjean
bcwildfirewkly.bsky.social
“Scientists predict wildfire smoke will be most costly climate-related health hazard” www.nbcnews.com/science/scie... via @nbcnews.com

#AirQuality #Climate #Health #Wildfires #WildfireSmoke
Scientists predict wildfire smoke will be the most costly climate-related health hazard
New research provides some of the most extensive modeling of the growing health toll of wildfire smoke on public health in the U.S.
www.nbcnews.com
September 20, 2025 at 4:23 AM
Reposted by Cyrielle Denjean
wed-explorer.bsky.social
⚠️Seeing Smoke Near Forest Lakes? Here’s Why 🚩

Satellite imagery shows smoke from prescribed burns in the Black Mesa Ranger District. Winds push smoke northeast toward Snowflake. The burns reduce #wildfire risk but may cause haze through mid-November. 🚒👩‍🚒🔥

#NMwx #AZFire #WildfireSmoke
November 7, 2025 at 12:52 PM
Reposted by Cyrielle Denjean
drtels.bsky.social
Here's a map of UK fire activity in 2025.
2025 was a record year for both number of fires and burnt area in the UK, according to the satellite record.
Data from EFFIS, based on MODIS and Sentinel observations.
🔥#ukwildfires #wildfires
October 29, 2025 at 4:14 PM
Reposted by Cyrielle Denjean
cleanairfund.bsky.social
“2024 saw record deaths from #AirPollution from wildfires driven by climate change, showing the urgency of curbing emissions to stop this insane death spiral. Action on super pollutants...is our emergency brake to decisively slow global warming.” @nina-ren.bsky.social ✍️🔽
October 31, 2025 at 4:36 PM
Reposted by Cyrielle Denjean
davifaranda.bsky.social
🌀 Climate change made #HurricaneMelissa more intense.
📈 Up to 10% wetter (💧+14 mm/day)
💨 Up to 10% windier (+8 km/h)
Our new @climameter.bsky.social study shows that natural variability alone can’t explain these changes — human-caused warming is a key driver.
👉 climameter.org/20251027-hur...
October 28, 2025 at 4:59 PM
Reposted by Cyrielle Denjean
meteofrance.com
L’ouragan #Melissa frappe la Jamaïque ce mardi.

C’est la première fois qu’un ouragan d’une telle catégorie touche les terres de ce pays. Il est aussi l’un des ouragans les plus puissants jamais enregistrés dans le bassin des Caraïbes.

Le point complet ici 👉 meteofrance.com/actualites-e...
October 28, 2025 at 4:32 PM
Reposted by Cyrielle Denjean
esa.int
😎 First glimpses from space!

The new #Copernicus Sentinel-4 mission has delivered its first preliminary images during commissioning.

Sentinel-4’s spectrometer is hosted on @eumetsat.int's MTG-S1 satellite 🧪🌍

@josefaschbacher.esa.int @ec.europa.eu @esaearth.esa.int
The new Copernicus Sentinel-4 mission has delivered its first images, highlighting concentrations of atmospheric nitrogen dioxide, sulphur dioxide and ozone. Despite being preliminary, these images mark a major milestone in Europe’s ability to monitor air quality all the way from geostationary orbit, 36 000 kilometres above Earth. This image depicts tropospheric nitrogen dioxide with clear pollution hotspots visible along the Mediterranean coast and over Italy’s Po Valley. This image presents a vertical column density of sulphur dioxide. A distinct plume can be seen emerging from Mount Etna in Italy and drifting south-eastwards over the sea. Although Etna is currently relatively calm, much larger plumes are typically observed during periods of heightened volcanic activity. In addition to natural emissions from volcanoes, sulphur dioxide is also released through human activities, particularly from ships burning high-sulphur fuels and power plants using brown coal. This image shows a vertical column of ozone. While ozone high up in the stratosphere plays a crucial role in shielding life on Earth from harmful ultraviolet radiation, ozone in the lower atmosphere acts as a pollutant, contributing to poor air quality and respiratory problems. The overall ozone levels here are within the expected range. This image of Europe and part of North Africa is based on the first Earth radiance spectra measured by Sentinel-4. The false-colour image, generated by assigning the signals in specific spectral ranges to red, green and blue, shows the land, ocean and clouds as expected.
October 21, 2025 at 8:42 AM
Reposted by Cyrielle Denjean
calxcunningham.bsky.social
Out today in @science.org, we show wildfire disasters have surged in the last decade, as climate change intensifies fire weather and exacerbates other vulnerabilities.

📄 www.science.org/doi/10.1126/...

With @pyrogeog.bsky.social @climate-guy.bsky.social
Climate-linked escalation of societally disastrous wildfires
Climate change and land mismanagement are creating increasingly fire-prone built and natural environments. However, despite worsening fire seasons, evidence is lacking globally for trends in socially ...
www.science.org
October 2, 2025 at 11:06 PM
Reposted by Cyrielle Denjean
wmo-global.bsky.social
📈 Carbon dioxide (CO₂) levels in the atmosphere soared by a record amount to new highs in 2024, according to WMO’s latest Greenhouse Gas Bulletin.

🔗 Find out more: https://bit.ly/3J2jZOg https://bit.ly/4qkJNGb
October 16, 2025 at 9:44 AM
Reposted by Cyrielle Denjean
infoca.bsky.social
🗓️ 14/10/2025 🕗 17.56 h.

🔴 ACTIVO | Incendio en #RincónDeLaVictoria, #Málaga.
#IFRincónDeLaVictoria, en paraje Arroyo Granadillas.

MEDIOS:
🚁 1 ligero
👨🏻‍🚒 2 grupos de bomberos forestales, 1 técnico de operaciones, 1 agente de medio Ambiente
🚒 1 autobomba
October 14, 2025 at 4:14 PM
Reposted by Cyrielle Denjean
stefanlucien.bsky.social
Le produit #CloudTypeRGB du satellite #MTG-I d' @eumetsat.int est un outil d'analyse #météo avancé. Il distingue la phase des nuages ici appliqué sur la tempête #Karen au Nord des #Açores. Vous trouverez des explications sur cette couche sur le site :

user.eumetsat.int/resources/us...
October 10, 2025 at 11:34 AM
Reposted by Cyrielle Denjean
mparrington.bsky.social
Copernicus Atmosphere Monitoring Service – Regional Air Quality Production System v1.0 by Colette et al. just published in @egu.eu Geoscientific Model Development gmd.copernicus.org/articles/18/... #CopernicusAtmosphere #airquality @copernicusecmwf.bsky.social @ecmwf.int @laurencerouil.bsky.social
Copernicus Atmosphere Monitoring Service – Regional Air Quality Production System v1.0
Abstract. The Copernicus Atmosphere Monitoring Service (CAMS) delivers a wide range of free and open products in relation to atmospheric composition at global and regional scales. The CAMS Regional Se...
gmd.copernicus.org
October 8, 2025 at 6:52 AM
cyrielledenjean.bsky.social
📢🔥We are seeking a highly motivated PhD student to join our research team on the #EUBURN project. This fully funded three-year position is an exciting opportunity for candidates with a strong academic background and a passion for atmospheric science.
👉 Apply here: lnkd.in/dAANHrmR
October 6, 2025 at 5:14 PM
Reposted by Cyrielle Denjean
copernicusecmwf.bsky.social
📉 CAMS data revealed repeated episodes of transatlantic #smoke, #Saharan dust - CAMS
📉 Record carbon emissions from #wildfires in the EU and UK – CAMS via @adamvaughan.bsky.social
📉 #ozone hole reaching a larger-than-average area mid-September – CAMS
September 30, 2025 at 11:11 AM
Reposted by Cyrielle Denjean
dr-jfdoussin.bsky.social
Discours de Trump à l'ONU : Le CNRS-INSU alerte "Nier la science, c’est condamner nos économies à subir des chocs plus violents, des pertes d’emplois durables, une insécurité croissante mais c’est aussi réduire la faisabilité des trajectoires soutenables"
www.cnrs.fr/fr/actualite...
September 26, 2025 at 12:06 PM
Reposted by Cyrielle Denjean
infocam.bsky.social
ACTUALIZACIÓN
▶️#IFPeñalbadelaSierra en #Guadalajara. Tras el ocaso, se retiran los medios aéreos continúan las labores extinción de #INFOCAM de @gobjccm.
🚨 Nivel 1
🗺️ Superficie afectada estimada 800 ha
🚚7 medios terrestres
👥35 efectivos #BBFF #AAMM
peñalba Peñalba
September 25, 2025 at 6:40 PM
Reposted by Cyrielle Denjean
wed-explorer.bsky.social
A satellite view captures the severe Sierra de Tamajón #fire, showing active flames, charred land, and dense smoke. Winds carry the plume far, dispersing it across the Mediterranean to the Balearic Sea, highlighting the fire’s extensive environmental impact.🌬🔥
September 26, 2025 at 8:14 PM
Reposted by Cyrielle Denjean
melindaberman.bsky.social
Excited to share a new publication led by @drdavepeterson.bsky.social with contributions by Mike Fromm, René Servranckx and others, that analyzes the inventory of all known, worldwide, observed pyroCb events from 2013-2023! www.nature.com/articles/s41...
Worldwide inventory reveals the frequency and variability of pyrocumulonimbus and stratospheric smoke plumes during 2013–2023 - npj Climate and Atmospheric Science
npj Climate and Atmospheric Science - Worldwide inventory reveals the frequency and variability of pyrocumulonimbus and stratospheric smoke plumes during 2013–2023
www.nature.com
September 25, 2025 at 6:34 PM
Reposted by Cyrielle Denjean
petergleick.bsky.social
The concept of trying to implement geoengineering solutions to #climate change is like trying to design a complicated, expensive, unreliable helmet while you're still hitting yourself in the head with a 2x4.
September 21, 2025 at 5:49 PM
Reposted by Cyrielle Denjean
csic.es
👩‍🔬Hemos acompañado a los expertos del #CSIC que evalúan en Las Médulas los efectos del incendio declarado en agosto

🌳La información recabada se trasladará a las administraciones responsables para la adopción de medidas de recuperación 

🎥 CSIC Comunicación 👇
September 20, 2025 at 7:04 AM
Reposted by Cyrielle Denjean
copernicusecmwf.bsky.social
A challenging summer for air quality saw the highest wildfire emissions in 23 years in Europe & the UK, driven by wildfires in Iberia. CAMS data also revealed repeated episodes of transatlantic smoke, Saharan dust and ozone spikes. Read the article: atmosphere.copernicus.eu/highest-wild...
September 18, 2025 at 1:22 PM
Reposted by Cyrielle Denjean
esa.int
The first images from @eumetsat.int's MetOp-SG-A1's 3MI instrument are in. 3MI monitors atmospheric aerosols, providing new insights into how these tiny particles affect air quality and climate 🌏

www.esa.int/ESA_Multimed...
First view of aerosols from MetOp-SG’s 3MI instrument
First view of aerosols from MetOp Second Generation’s 3MI instrument
esa.int
September 15, 2025 at 1:01 PM
Reposted by Cyrielle Denjean
tonyveco.bsky.social
🔴 ⚠️ 🔥 🛰️ Few days after the end of the meteorological summer, the wildfire season was not over yet in the iberian peninsula: the new Fire Temperature RGB from MTG on #Eumetview shows the wide burn scars across Portugal and Spain also visualizing hotspots still active in the area ⬇️ 📸Sept.6 at 11UTC
September 8, 2025 at 2:36 PM