⏯️ The recording of our webinar "New aerosol and surface reflectance products from novel satellite observations and their synergies" is now available online: www.youtube.com/watch?v=RuWX... 🙏 A big thank you to Oleg Dubovik for sharing his expertise and insights, and to Anna Gialitaki for moderating

New aerosol and surface reflectance products from novel satellite observations and their synergies

YouTube video by CERTAINTY-ACI

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📢 One Week to Go! certainty-aci.eu/events/ ⬇️

CERTAINTY-ACI@certainty-aci.bsky.social · 2mo ago

📢 CERTAINTY & AIRSENSE WEBINAR New aerosol and surface reflectance products from novel satellite observations and their synergies 🌍 🛰️ 🎤 Oleg Dubovik (CNRS, Université de Lille) Moderator: Anna Gialitaki (National Observatory of Athens) 🗓️ Thursday, June 18 🕐 14:00 CEST 💻 Zoom: lnkd.in/eGrqEqjp

Have you ever wondered how ice forms in clouds? Watch Marios Chatziparaschos and @drgilbz.bsky.social to find out! ⏯️ www.youtube.com/watch?v=5FRL...

These tiny particles control how clouds freeze

YouTube video by CERTAINTY-ACI

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📢 CERTAINTY & AIRSENSE WEBINAR New aerosol and surface reflectance products from novel satellite observations and their synergies 🌍 🛰️ 🎤 Oleg Dubovik (CNRS, Université de Lille) Moderator: Anna Gialitaki (National Observatory of Athens) 🗓️ Thursday, June 18 🕐 14:00 CEST 💻 Zoom: lnkd.in/eGrqEqjp

☁️ 🌏 How do clouds and aerosols influence our climate? In this interview conducted by @drgilbz.bsky.social, Georgios Dekoutsidis from the CERTAINTY project explains how he studies complex atmospheric processes using data collected during the PERCUSION campaign. www.youtube.com/watch?v=AYCF...

What scientists can learn by flying through clouds

YouTube video by CERTAINTY-ACI

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Despite their tiny size and small number, ice nucleating particules have a huge impact on global weather and climate through their influence on clouds. @drgilbz.bsky.social & Marios Chatziparaschos ▶️ www.youtube.com/watch?v=5FRL...

These tiny particles control how clouds freeze

YouTube video by CERTAINTY-ACI

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A recent publication in the @tellusjournal.bsky.social by Bjorn Stevens et al. provides an overview of the ORCHESTRA field campaign 📄 tellusjournal.org/articles/10....

We’re looking forward to sharing our latest results at EGU 2026. Come see sessions organized by CERTAINTY & the presentations from team members at these sessions: certainty-aci.eu/egu26/

[New publication] 🌍 Desert dust exerts twice the longwave radiative heating estimated by climate models Jasper F. Kok, Ashok Gupta, Amato Evan, Carlos Pérez García-Pando, et al. www.nature.com/articles/s41...

Desert dust exerts twice the longwave radiative heating estimated by climate models - Nature Communications

This study shows that atmospheric desert dust keeps about twice as much infrared heat from escaping to space as climate models predict, highlighting that improving dust in models could sharpen weather...

nature.com

Clouds can impact climate massively - and it turns out, their impact changes between day and night. 🌜🌞 Great to chat with Geoff Pugsley and Ed Gryspeerdt about their recent work on nighttime cloud impacts.

CERTAINTY-ACI@certainty-aci.bsky.social · 3mo ago

⏰ Human activity is changing clouds… at one particular time of day What time is it? Watch the video with @drgilbz.bsky.social Geoffrey Pugsley & Edward Gryspeerdt to find out! ▶️ www.youtube.com/watch?v=HK9h...

⏰ Human activity is changing clouds… at one particular time of day What time is it? Watch the video with @drgilbz.bsky.social Geoffrey Pugsley & Edward Gryspeerdt to find out! ▶️ www.youtube.com/watch?v=HK9h...

Human activity is changing clouds… at one particular time of day

YouTube video by CERTAINTY-ACI

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Why aerosols matter 🌥️ What happens to our climate if the ingredients of clouds change? That question is asked in a recent paper written by CERTAINTY scientists. 🎤 @drgilbz.bsky.social & @annelev.bsky.social ▶️ www.youtube.com/watch?v=0B6S...

Our climate is surprisingly sensitive to these tiny particles

YouTube video by CERTAINTY-ACI

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Made some videos with @certainty-aci.bsky.social about the climate impact of clouds and aerosols. And you can check out the first one here 👇

Our climate is surprisingly sensitive to these tiny particles

YouTube video by CERTAINTY-ACI

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The EC–ESA Aerosol Cloud Cluster brings together over 220 researchers across 40 institutions, uniting projects like CleanCloud, CERTAINTY, and AIRSENSE to improve climate predictions and support more effective climate action. More info: certainty-aci.eu/ec-esa-aeros...

ESA Earth Observation@esaearth.esa.int · 5mo ago

Aerosol–cloud interactions remain one of the largest uncertainties in near‑term climate forecasts☁️ @esa.int & @ec.europa.eu are joining forces through the Aerosol‑Cloud Alliance, linking missions like EarthCARE with advanced modeling to improve climate predictions eo4society.esa.int/2026/03/10/c...

[New publication] ☁️ 🌳 Beyond cloud cover: Low- and high-altitude clouds have distinct impacts on tree sap flow and transpiration ✍️Talvinen, S., Salmon, Y., Guttierez Lopez, J., et al. www.sciencedirect.com/science/arti...

Beyond cloud cover: Low- and high-altitude clouds have distinct impacts on tree sap flow and transpiration

Transpiration drives up to 40 % of terrestrial precipitation, with forests playing a critical role. This study combines long-term sap flow measurement…

sciencedirect.com

From Canada to India: the far-reaching impact of 2023’s wildfire smoke 🔥 ✒️ Rosu Iulian-Alin et al. ➡️ Read the publication: www.nature.com/articles/s44... ➡️ Find out more on the climate effects of the Canadian wildfires: certainty-aci.eu/news-climate...

[New publication] 📄 Implementation of primary and secondary ice production in EC-Earth3-AerChem: global impacts and insights ✒️ Montse Costa Surós et al. ➡️ Read the paper: acp.copernicus.org/articles/26/... ➡️ Discover all EC-ESA Aerosol Cloud Cluster publications: certainty-aci.eu/ec-esa-aeros...

Implementation of primary and secondary ice production in EC-Earth3-AerChem: global impacts and insights

Abstract. Clouds and aerosol–cloud interactions remain major sources of uncertainty in climate projections. Here, we improve the representation of mixed-phase clouds (MPCs) in the EC-Earth3-AerChem Ea...

acp.copernicus.org

Two recent studies co-authored by CERTAINTY members are improving our understanding of how the polar oceans, sea ice, and the associated atmospheric particles form and behave in polar regions and influence clouds. ➡️ certainty-aci.eu/contribution...

Great to come together with such a fantastic team at our Annual Meeting as we reflect on our progress and set the course for Year 3 and beyond! @ilmatieteenlaitos.fi

🌍 Better weather and climate projections mean smarter, safer, and more resilient decisions, for Europe and beyond ▶️ www.youtube.com/watch?v=ji3z...

Aerosol–Cloud Interactions Are Key to Climate Resilience

YouTube video by CleanCloudProject

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Explore how clouds form, the crucial role aerosols play in weather and climate, and why understanding these tiny particles remains one of society’s biggest scientific challenges. ▶️ www.youtube.com/watch?v=RehM...

Aerosol Cloud Interactions

YouTube video by CleanCloudProject

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Do we really know by how much ellipsoidal shapes enhance the extinction of solar radiation by dust? By Obiso et al. 🔍 doi.org/10.5281/zeno...

The EC-ESA Aerosol Cloud Cluster addresses the biggest uncertainty in regional climate prediction: aerosol-cloud interactions. It unites +220 researchers linking EU projects CleanCloud & CERTAINTY with ESA’s AIRSENSE to advance climate modeling & mitigation 🔗 www.youtube.com/watch?v=CPHt...

What is the EC ESA Aerosol Cloud Cluster?

YouTube video by CleanCloudProject

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Our perspective paper on aerosol cloud interactions is featured in Eos.com as editor ‘s highlight 👇 @cleancloud-he.bsky.social @certainty-aci.bsky.social Understanding Aerosol-Cloud Interactions is Pivotal for Improving Climate Predictions eos.org/editor-highl...

Understanding Aerosol-Cloud Interactions is Pivotal for Improving Climate Predictions - Eos

Global cooperation and knowledge sharing are essential to improve our understanding of cloud formation and evolution through aerosol-cloud interaction.

eos.org

[EC–ESA Aerosol Cloud Cluster Activity] ⁉️Uncertainty in how air pollution interacts with clouds is the largest source of uncertainty in near-term climate projections 🔍New policy brief explains why reducing the uncertainty is essential for effective climate policy certainty-aci.eu/policy-brief...

Excited to announce our new publication on #aerosol #cloud #interactions 👇 Proud to lead this perspective with great experts from the field @cleancloud-he.bsky.social @certainty-aci.bsky.social #ESA-AIRSENSE agupubs.onlinelibrary.wiley.com/doi/full/10....

Aerosol‐Cloud Interactions: Overcoming a Barrier to Projecting Near‐Term Climate Evolution and Risk

Aerosol-cloud interactions (ACI) remain a barrier to provide precise and actionable advice to policy makers at global and regional levels We recommend improving satellite retrievals, expanding gr...

agupubs.onlinelibrary.wiley.com

[New EC-ESA Aerosol Cloud Cluster publication] Aerosol-Cloud Interactions: Overcoming a Barrier to Projecting Near-Term Climate Evolution and Risk By Im et al. ➡️ agupubs.onlinelibrary.wiley.com/doi/10.1029/... @cleancloud-he.bsky.social

Aerosol‐Cloud Interactions: Overcoming a Barrier to Projecting Near‐Term Climate Evolution and Risk

Aerosol-cloud interactions (ACI) remain a barrier to provide precise and actionable advice to policy makers at global and regional levels We recommend improving satellite retrievals, expanding gr...

agupubs.onlinelibrary.wiley.com

📄🔥 Diverse aerosol effects revealed during wildfire and dust storm events in Ukraine in April 2020 ✍️ Savenets, M., Mahura, A., Nuterman, R., Kulmala, M., Petäjä, T. Atmospheric Pollution Research, 2026, 102906, ISSN 1309-1042 www.sciencedirect.com/science/arti...

Diverse aerosol effects revealed during wildfire and dust storm events in Ukraine in April 2020

Aerosol particles are significant drivers of meteorological phenomena, especially during high concentration events such as wildfires and dust storms. …

sciencedirect.com

📄New publication: Regional climate imprints of recent historical changes in anthropogenic Near Term Climate Forcers ✍️ Santos-Espeso, A. et al. ➡️ esd.copernicus.org/articles/16/... ➡️ all CERTAINTY papers: certainty-aci.eu/publications/

Regional climate imprints of recent historical changes in anthropogenic Near Term Climate Forcers

Abstract. Near-Term Climate Forcers (NTCFs) play a crucial role in shaping Earth's climate, yet their effects are often overshadowed by long-lived greenhouse gases (GHGs) when addressing climate varia...

esd.copernicus.org

[Continuing collaboration with @cleancloud-he.bsky.social] ❄️ Efficient ice multiplication from freezing raindrop fragmentation 🖊️ Nils Pfeifer, Bernd Mom, Dmitri Moisseev, Susan Hartmann, Julian Meusel, Corinna Hoose & Maximilian Maahn 🔎 Read the publication: www.nature.com/articles/s43...

Efficient ice multiplication from freezing raindrop fragmentation - Communications Earth & Environment

Drop fragmentation upon freezing is an efficient secondary ice process, contributing to cloud ice formation even at relatively high temperatures, according to quantitative analyses of ice crystals via...

nature.com