Mark Parrington

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...

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

Don’t miss this week’s online lectures at the 7th Joint Training Course on Atmospheric Composition hosted by @ecmwf.int, CAMS, @eumetsat.int and @esa.int (9–10 Oct 2025). Lectures are open to all and cover instruments & data, aerosol modelling & monitoring, ML applications and more.

Frailty in ageing populations worsened by air pollution, global review finds Coauthor of research says condition linked to heightened vulnerability and loss of independence – but is reversible

#Airpollution increases the likelihood of becoming frail in middle & old age, according to an international review

People living longer is something to celebrate but reducing #airpollution will be important for life-quality and health cost.

Piece by me.

www.theguardian.com/environment/...

US Latinos mobilize to monitor – and improve – local air quality: ‘We have to fix it’ As Latino communities ramp up air quality monitoring, Trump’s EPA moves to weaken pollution regulations

"As Latino communities ramp up air quality monitoring, Trump’s EPA moves to weaken pollution regulations." Uprooter @thaliajuarez.bsky.social for @theguardian.com

www.theguardian.com/us-news/2025...

Lifting the ‘constant black cloud’: how a smog-bound city cut dangerous levels of air pollution A 30-year effort driven by long-term policies is finally paying off in Santiago in Chile – but the challenge is far from over

Lifting the ‘constant black cloud’: how a smog-bound city cut dangerous levels of air pollution

September, and January-September, global total estimated fire emissions were amongst lowest values of past 23 years despite some large-scale regional #wildfires, driven by the average emissions from southern tropical Africa. #CopernicusAtmosphere GFAS data based on MODIS🛰️ active fire obs.

Global #wildfires #openburning intensity & emissions for September 2025 in #CopernicusAtmosphere Monitoring Service GFAS data ads.atmosphere.copernicus.eu/datasets/cam.... Seasonal tropical fires + some further fires in Canada, Pacific NW & Iberian Peninsula @copernicusecmwf.bsky.social @ecmwf.int

Polar bears take over abandoned research station in Russian Arctic Polar bears have taken over an abandoned Soviet polar research station on small island off Russia's far northeastern cost. Vadim Makhorov, a travel blogger, used a drone to film the bears roaming in ...

From Soviet ghost station to polar bear stronghold... drone footage captures the new residents.
🐻‍❄️🐻‍❄️🐻‍❄️
#Arctic #polarbears
via @reuters
www.rcinet.ca/eye-on-the-a...

🔔 Dataset update: Daily & monthly CARRA Arctic regional reanalysis data (1991–present, 2.5km resolution) now live in the #C3S Climate Data Store (CDS) in addition to the CARRA datasets on different levels!🔗 cds.climate.copernicus.eu/datasets/rea...
#CopernicusClimate

📣ECMWF’s Real-time Catalogue is now open to all, supporting global efforts to improve early warnings and build resilience.
Find out more about what this means and the importance of attribution ➡️ www.ecmwf.int/en/about/med...

Image of the week: Saharan dust sweeping west over the Atlantic towards the Canary Islands, captured by Meteosat-12 from 36,000km above Earth.
While dust can affect air quality & flights, it also fertilises the ocean, fuelling blooms of phytoplankton that support marine life. More at: bit.ly/4pL6ItX

Next online lectures for the 7th #atmostraining are tomorrow (2 Oct, times in CEST):

10:00 Melanie Ades on data assimilation for aerosols
14:00 Rasmus Lindstrot on the new Sentinel-4/-5 satellites

Same link as in post below.

@eumetsat.int @esa.int @ecmwf.int @copernicusecmwf.bsky.social

TEMPO Aerosol Optical Depth and Aerosol Layer Height Retrieval Algorithm We developed an algorithm to retrieve aerosol optical depth (AOD) and aerosol layer height (ALH) from Tropospheric Emissions: Monitoring of Pollution (TEMPO) data The results match well with AEro...

Check out our group's recently published paper in JGR - Atmospheres on the "TEMPO Aerosol Optical Depth and Aerosol Layer Height Retrieval Algorithm"!
agupubs.onlinelibrary.wiley.com/doi/10.1029/...

🎉 UC ANR’s Daniel Swain @weatherwest.bsky.social joins the 2025 #TIME100Next, spotlighting 100 rising leaders worldwide. A climate scientist & communicator, Swain studies droughts, floods & wildfires—& makes complex science accessible to the public & policymakers.
More here: bit.ly/4nXePlk

PhD Position in Atmospheric Chemistry

We have a new PhD project to study ozone formation from fires. If interested in atmospheric chemistry, fires, living in Zurich, and studying at ETH, consider applying here: jobs.ethz.ch/job/view/JOP...

#atmostraining

Online lectures for the 7th @eumetsat.int @esa.int @ecmwf.int @copernicusecmwf.bsky.social Joint Training on Atmospheric Composition start tomorrow (1 Oct, CEST):

10:00 Samuel Remy on atmospheric aerosols
14:00 Sophie Vandenbussche on observing dust from space

eumetsat.zoom.us/meeting/regi...

@ecmwf.int invites proposals to boost collaboration in addressing country-specific, transboundary or transnational atmospheric challenges and associated impacts, via the CAMS National Collaboration Programme (NCP).

📉 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

A map in shades of blue showing the North Eastern Atlantic with light arrows mostly from south west to north east and highlighting the Graciosa Island in the Azores and Mace Head in Ireland. A big cloud in the top left corner, containing the text "measurements of air masses without human influence". Around the text, icons for pressure, methane, gamma radiation, wind, carbon dioxide, particulate matter, carbon monoxide, eddies, ozone, rain, radon and temperature are arranged. The cloud is connected to the two measurement stations by a kind of flow-y triangle. In the top left corner the project's logo and two hands holding an earth and radiation sign in grey are placed. In the bottom right corner small text says: "Wind data from E.U. Copernicus Marine Service Information (DOI: 10.48670/moi-00181), map data from Natural Earth".

The first measurements are running and more will follow soon!
NuClim aims to determine the baseline of greenhouse gas concentrations in the North Atlantic. We look at radon, greenhouse gases and a range of other parameters at the ENA observatory (Azores) and @maceheadccaps.bsky.social (Ireland).

Many wildfires were still burning in the US Pacific Northwest & western Canada on 25 Sep, including relatively intense wildfires in Washington State, measured by fire radiative power (yellow/orange markers) from the VIIRS sensor on @noaa.gov NOAA-21. @mparrington.bsky.social @weatherwest.bsky.social

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

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...

Participants and mentors in the Code for Earth Final Day 2025, Bonn, Germany

Today in Bonn, ten selected teams from #CodeForEarth 2025 are presenting their results. Supported by mentors and partners, they’ve built open-source tools addressing challenges in data visualisation, machine learning, and software development.

➡️ www.ecmwf.int/en/about/med...

US and Canada fight over who's to blame for wildfires US officials have blamed Canada for not doing enough to stop its wildfire smoke from wafting south. Climate experts say it’s not so simple.

“Wildfire smoke contains PM2.5 - a type of air pollution - that is known to trigger inflammation in the body. It can exacerbate conditions like asthma and heart disease...” www.bbc.com/news/article... - BBC News

#cdnpoli #uspoli #wildfires

Some active fires in northern Alberta today. GOES-West geocolor loop below. Also, active fires in the Northwest Territories today (not shown in this loop).

Wildfires affect not just the air we breathe, but the water we drink. earthobservatory.nasa.gov/images/15479...

Four polar stereographic maps showing Arctic sea ice thickness for the month of September in 1985-1994, 1995-2004, 2005-2014, and 2015-2024. Thickness is shown with colors from black at 0 meters to purple at 2.5 meters to white at 5.0 meters. Sea ice in thinning in all regions over time.

September #Arctic sea ice thickness by decade... ❄️🥼

Data information: climatedataguide.ucar.edu/climate-data...

Thick smoke (purple shading) from wildfires in Washington State blew northward into British Columbia, Canada yesterday 23 Sep, observed by the VIIRS sensor on the @noaa.gov NOAA-21 satellite. @saramelinda.bsky.social @mparrington.bsky.social

Dr. Schneidemesser from IASS Potsdam will be with us on this thursday 25th September at the iLEAPS Colloquium series. Join us on Teams: msteams.link/XZK3
@pallavires.bsky.social @futureearth.bsky.social @igacproject.bsky.social @ukceh.bsky.social @copernicusecmwf.bsky.social

Headshot photo of Tim Hewson. Section of a forecast chart. Text: “ECMWF science blog. Getting the most out of ECMWF sub-seasonal forecasts. Tim Hewson.”

New science blog: Tim Hewson introduces a new type of forecast map which enables users to visualise the information content of sub-seasonal forecasts like never before.

➡️ www.ecmwf.int/en/about/med...