Latest ECMWF forecast of the zonal mean zonal wind at the 10 hPa level, picking up in strength, and reestablishing to normal polar vortex wind speeds within the coming week

Incredible footage of volcanic eruption of a dormant volcano in Ethiopia from a commercial plane. A sight seen for the first time in recorded history. ⌚

Contrails act like short-lived climate forcers. Here was the 1-2% estimate recently (re-)stated: www.rff.org/publications...

Najnowszy wpis na blogu o pionierskim zdobyciu przez Tomasza wulkanu tarczowego #HayliGubbi #Afar #Etiopia #Afryka/ Various photos of #HayliGubbi #volcano in #Afar #Ethiopia Link: wulkanyswiata.blogspot.com/2025/03/hayl...

#ETHIOPIA: Hayli Gubbi is the southern most #volcano of the Erta Ale Range erupts today violently after 10,000years…..it is the northern end of the Great Rift Valley. 1/2 #HayliGubbi

An eruption from the #HayliGubbi volcano in #Ethiopia resulted in a large ash cloud, visible here from space. 🌋 This impressive view was seen 36,000km above Earth by our Meteosat-12 satellite on 23 November at 13:40 UTC.

1️⃣ Der #Vulkan #HayliGubbi ist nach Tausenden von Jahren in der Afar-Region, #Äthiopien, ausgebrochen⤵️

Sentinel-5P #TROPOMI measurements at ~11:00 UTC show most of the SO₂ emissions from #HayliGubbi spreading east in the upper troposphere. Plume contains ~44 kilotons of SO₂ (~0.04 Tg).

An explosive #eruption of Hayli Gubbi #volcano, located SE of Erta'Ale in the Afar Rift (Ethiopia), began at ~08:30 UTC on Nov 23. Eruption onset was fortuitously captured by a @planet.com overpass at 08:31 UTC. Hayli Gubbi has no record of Holocene eruptions. Toulouse VAAC reporting ash to ~15 km.

Búzios Scientific Statement 100 climate researchers, coordinated by @pik-potsdam.bsky.social & @iiasa.ac.at, released a joint statement to inform the #COP30 negotiations and provide guidance on difficult but doable global efforts designed to limit dangerous overshoot of 1.5°C as much as possible.

Sterke en snelle vermindering van broeikasgas-uitstoot is nodig om de zeespiegelerfenis te beperken www.nioz.nl/en/news/deep...

The Vietnamese Bach Ma Mountain Peak station recorded one-day rainfall of 1,739 mm - close to the global one-day record and perhaps a new record for the northern hemisphere. It is part of a deluge Viet Nam has seen in October, shattering 35 precip records. e.vnexpress.net/news/news/en...

Great dissection of where the world stands on climate 10 years after Paris: better than ever; worse than needed. Start here: www.nytimes.com/interactive/... But lemme quibble a bit with the CO₂ₑ emissions pathways painted here. A quick 🧵

I was recently invited to present my thoughts on the role of universities in the #climate crisis Several audience members asked that I share my slides, so I've decided to post them here too as an open resource I'd love any feedback, & for you to share examples of projects & best practice. Long 🧵😊

See also this inititative www.solargeoeng.org/non-use-agre... though without the dual-use permanent satellite-based monitoring element to detect any unwanted experimenting together with early warning for volcanic ash plumes in UTLS

Non-use agreement similar to the present-dat nuclear test-ban treaty, together with new Europe/Asia led dual-use satellite-based monitoring (non-use and also for aviation warning systems on volcanic ash) could be a practical way forward for the next decade, in my view. Finding out how to get there.

reminder... activistchecklist.org/links/

Tien jaar na het Klimaatakkoord van Parijs is duidelijk dat de aarde nog steeds opwarmt. Hittegolven zijn warmer en komen vaker voor, en het aantal warme dagen neemt wereldwijd toe.

In this piece @carbonbrief.org still reports the warming by methane based on its increase in abundance (~25% of warming, and not the more correct much larger share in the emission-based methane forcing. Source: IPCC AR6. Do not forget #troposphericozone and other chemistry

‘Stratospheric aerosol injection (SAI) could change the sky’s appearance. This could play a role in shaping public perception of SAI.’

Explainer: Will global warming ‘stop’ as soon as net-zero emissions are reached? | @hausfath.bsky.social #CBarchive Read:

It is a thought proviking idea, using methane-consuming microbes to combat methane release at the source location (eg waste water, landfill, coal mines). What could be demonstrated already in this respect?

The Dutch offshore wind programme is in trouble. While 4.5 GW is in operation and another 1.5 GW under construction, the plan was to rapidly build out capacity to 21 GW by 2032. That is now out of reach. My thoughts on how this happened, and what to do about it! www.commonfutures.com/en/insights/...

Emerging hemispheric asymmetry of Earth’s radiation | PNAS www.pnas.org/doi/10.1073/...

‘Circular cirrus’ (contrails caused by circling aircraft) over The Netherlands observed with MTG

The centers of Hurricanes #Humberto and #Imelda are now just 480 miles apart, and they share a larger envelope of circulation. What a spectacular example of binary vortex interaction!

Noting guru Eun-Pa Lim explains on X that its still very early days for the Sudden Stratospheric Warming, and what we have seen so far is a 'minor warming'

Busy days around what might become to be known as the 2025 Sudden Stratospheric Warming: Loads of media interest, and thanks to the journalists who take their time to talk to me before writing their story. Happy to take some of mine in turn. theconversation.com/air-temperat...

De ozonlaag vertoont tekenen van herstel dankzij internationale samenwerking en wetenschappelijk onderbouwd beleid. Monitoring blijft nodig omdat natuurverschijnselen onverwacht invloed kunnen hebben.

Het KNMI heeft onhoorbaar laagfrequent geluid (infrageluid) geregistreerd van de inslag van asteroïde 2023 CX1, die op 13 februari 2023 boven Normandië in Frankrijk uiteenviel. De ruimterots was ongeveer één meter groot en werd slechts enkele uren voor de inslag ontdekt.

From daily tracking of the Antarctic ozone hole to open-access data, CAMS helps protect the ozone layer, safeguarding people and planet. On the #WorldOzoneDay, we highlight CAMS’ role in global efforts towards ozone recovery. Read the article for insights 🔗 atmosphere.copernicus.eu/preserving-o...

Read more: atmosphere.copernicus.eu/preserving-o...

This year, the ozone hole presented an early development, reaching a larger-than-average area mid-September. On #WorldOzoneDay, #CopernicusAtmosphere continues to provide tools for everyone to monitor the health of our planet.

In 1985, the Vienna Convention set the stage for fixing the ozone hole. It showed the power of countries coming together around science. A model we still need today. #WorldOzoneDay #MontrealProtocol #GlobalAction

‘Proxy retrievals are robust in horizontally heterogeneous conditions, including cloud-dominated tropics and variable surface albedo.’ doi.org/10.1029/2024...

Note: Global greenhouse gas emission monitoring is not dependent on one state (eg US) or one actor not providing new data (eg EPA). The global carbon budget can be monitored using top-down inversions providing observation-based country emission estimates essd.copernicus.org/articles/17/...

Shares of power production by source, world

Emerging signs of diverging global and US trends for wind energy production and EV sales. Even if US would stop its green investments, the rest of the world continues to decarbonize rapidly, reducing future climate warming.

Climate Experts’ Review of the DOE Climate Working Group Report. Dessler et al., 2025

Report: ‘Big businesses are doing carbon dioxide removal all wrong’

Safeguarding the polar regions from dangerous geoengineering: a critical assessment of proposed concepts and future prospects

Compilation of portraits of selected key persons in climate and/or energy, including a couple of atmospheric scientists

In cropland areas where large quantities of fertilizers are commonly used, emissions of nitrogen oxides (NOx) from soils can significantly impact air quality.’

Drivers of methane growth. Agriculture, waste sector, and fossil fuel production and consumption. New study covering the 1990-2023 time period

Thanks to the Guardian for covering our efforts. Read more here: www.theguardian.com/environment/... Follow us, support the mission, and help keep climate truth alive.

Observations of a couple of hole-punch clouds or fall streaks over The Netherlands. earthsky.org/earth/hole-p...

Our paper exploring in depth the potential response of the Atlantic Meridional Circulation (AMOC) to Stratospheric Aerosol Injections led by Ewa Bednarz at NOAA CSL is now available online! Check out the paper here: agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Sign AGU’s letter to defend climate science. 
The Trump administration has proposed overturning the EPA’s endangerment finding — the science-based determination that greenhouse gases threaten public health.

All IPCC AR7 authors, organized per part, per chapter apps.ipcc.ch/report/autho...