The future of Europe’s forest disturbance regimes– a thread.
Tl, dr: Disturbances from wildfire, bark beetles & wind will continue to increase in the coming decades. Under unabated climate change disturbances could more than double by 2100.
New paper out in @science.org doi.org/10.1126/scie...
Every year tens of millions of tonnes of Saharan dust are dispersed across the globe, turning the sky orange and sometimes making the rain muddy. Step by step researchers are discovering the many ways in which dust outbreaks affect clouds, precipitation and weather forecasting systems.
Another interesting article done in collab with colleagues from EFI and our network!
📄Climate-driven increases in wildfire projected to affect European forest types differently
iopscience.iop.org/article/10.1...
"The CMIP6 underestimation of shortwave ERF trends arises largely from cloud‐related processes (Figure 2d), suggesting that aerosol–cloud interactions are inadequately represented. Recent declines in SO₂ emissions have likely reduced aerosol cooling and amplified positive ERF (Hansen et al., 2023"
Our new study in Science Advances: Extreme fire risk days are increasingly synchronizing globally. This trend strains firefighting cooperation and worsens regional air quality.
With @climate-guy.bsky.social @mattwjones.bsky.social @mojisadegh.bsky.social and Alison Cullen
doi.org/10.1126/scia...
Human exposure to wildfires in Catalonia has increased markedly over the past 30 years—driven not by more burned area, but by urban expansion into fire-prone landscapes.
Figure below shows the trend clearly.
DOI: doi.org/10.1038/s415...
In the Arctic, the major climate threat of black carbon is overshadowed by geopolitical tensions
apnews.com/article/arct...
See more charts from the Global Climate Highlights 2025 report published #CopernicusClimate
climate.copernicus.eu/global-clima...
Et si je vous disais que ce mois de janvier n’est pas froid… mais encore trop chaud ?
1/6
🧪🛰️
Mt Michael 🌋 (S. Atlantic) shows an example of volcanic emissions making a cloud brighter by the same process that human air pollution change cloud reflective properties.
This why it is of interest to study aerosols-cloud interactions.
1/n
The latest smoke emissions from Etna are a quiet but powerful reminder of why atmospheric monitoring matters. From natural to climate-driven extreme events, understanding the processes behind their impacts is not just science. It is building preparedness and resilience on the planet we live on.
Sempé
Graphic which reads 'Cutting super pollutants can reduce global warming 4x faster than reducing carbon dioxide alone', by the Clean Air Fund.
Cleaning our air is one of the most immediate ways to protect the planet 🌎
Cutting super pollutants can accelerate climate action, and save lives through improved #AirQuality and #PublicHealth.
Learn more ➡️ https://bit.ly/4dpSnw8
Le flux synoptique est favorable au transport de poussières désertiques au dessus de la France ces prochains jours.
⬇️ Prévision 17-21 déc 2025 - modèle #MOCAGE domaine régional #CNRM @meteofrance.com : contenu total en aérosols désertiques sur la colonne atmosphérique.
#dust #saharandust
[Bilan climatique 2025]
Feux de forêts, tempêtes, vagues de chaleur intenses, précipitations extrêmes... 2025 a été marquée par plusieurs événements climatiques marquants.
Retrouvez-les, ainsi que le zoom régional, dans notre bilan complet 👉 meteofrance.fr/actualite/pr...
🧪🌍🌧️
Aerosol-cloud-interactions (ACI) are a group of phenomena where particles influence/modulate clouds. It is v. tricky to model bcse the diverse scales involved.
Here they show that turbulence can compensate droplet formation by added particles.
agupubs.onlinelibrary.wiley.com/doi/full/10....
Map of the Burned area in August 2025 across the northwest of the Iberian Peninsula (NW-IP; orange), highlighting megafires (> 10,000 ha; red).
Scatterplot of monthly Buned Aarea versus Fire Weather Iindex in the NW Iberian Peninsula for 1985–2025.
Plot of the burn selectivity in August 2025 for the NW-IP: black dots show the fraction of BA for each vegetation class. “Pinus” and “Quercus” include natural, semi-natural, naturalized and plantations of native species. The red triangles indicate the presence of each class in the study area (i.e., what fraction of that vegetation class would have burned if fires were equally affecting all vegetation classes). Black error bars are 95% confidence intervals estimated through a conservative leave-one-fire-out jackknife.
Record-Breaking 2025 European Wildfires Concentrated in Northwest Iberia
onlinelibrary.wiley.com/doi/10.1111/...
~541000ha burnt under extreme monthly FWI
Shrublands were +vely selected by fire & to a lesser extent pines. Oaks & crops were -vely selected
@globalchangebio.bsky.social
🧪🌍🔥🌳 wildfire
🌡4 jours d'affilée avec température maximale > 14 °C en décembre à #Paris, du jamais vu depuis l'ouverture de la station historique du Parc Montsouris en 1873.
La même page en 2024
🔥 From record wildfire emissions in Europe to large-scale wildfires in Canada, California and around the Mediterranean, #CopernicusAtmosphere data show how wildfires throughout 2025 degraded air quality far beyond where the fires burn.
Read our article: atmosphere.copernicus.eu/copernicus-w...
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
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
🚅 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.
“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
⚠️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
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
“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 ✍️🔽
🌀 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...
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...
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.
😎 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
