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Project NuClim
@nuclim.bsky.social
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Nuclear observations to improve Climate research and GHG emission estimates, https://www.nuclim.eu
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nuclim.bsky.social
Project NuClim @nuclim.bsky.social · Sep 29
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).
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".
nuclim.bsky.social
Peak behind the scenes: Evolution of a sketch
Photo of open checkered sketch book with a pen lying across the right page. Across both pages, three sketches are visible. They contain circles, the abbreviations for uranium, radium, radon connected by arrows. The left sketch is already in essentials similar to the one in the final figure. Infographic with the title "Uranium decays to radon, Radon decays to lead". The overall colour theme is blue. Below the two sections of the title a atmosphere-earth cross sections is shown for each. In the left one, arrows in the color of the text "radon" in the title point from the earth to the atmosphere. In a magnified area, individual grains are shown. Within one, is the sequence "U → ... → Ra → Rn" and the same arrows point from the grain to the space between grains. Left from this arrangement, the long sequence "Uranium-238 → Thorium-234 → Protactinium-234 → Uranium-234 → Thorium-230 → Radium-226 → Radon-222" is shown from top to bottom with a radioactive sign next to each arrow. On the right side, "Rn → Po → ... → Pb" is shown in the atmosphere with arrows pointing towards the soil. The same sequence is shown in the grain and it says "Rn → Po" in the space between grains with again arrows pointing towards grain. Right from all that the sequence "Radon-222 → Polonium-218 → Lead-214 → Bismuth-214 → Polonium-214 → Lead-210 → Bismuth-210 → Polonium-210 → Lead-206" is listed, just as on the left side.
November 27, 2025 at 9:04 AM
Reposted by Project NuClim
nuclim.bsky.social
We'll start a five-part online presentation series about different aspects of our project in January.
The first talk will be on January 14th and then every second week following that.
See the details below, more information will follow soon. Stay tuned!
Announcement of presentation series datates and topics. The title is "Presentation Series" below that the NuClim logo and "online, 15-16 UTC" is placed. The dates are January 14, 2026 "Introduction to NuClim", January 28, 2026 "Radon-based air mass classification", February 11, 2026 "Pollution events, aerosols and clouds", February 25, 2026 "Plankton and greenhouse gases", March 11, 2026 "Combining the project results". In the bottom right corner it says: "More info following soon!"
November 24, 2025 at 9:27 AM
nuclim.bsky.social
We'll start a five-part online presentation series about different aspects of our project in January.
The first talk will be on January 14th and then every second week following that.
See the details below, more information will follow soon. Stay tuned!
Announcement of presentation series datates and topics. The title is "Presentation Series" below that the NuClim logo and "online, 15-16 UTC" is placed. The dates are January 14, 2026 "Introduction to NuClim", January 28, 2026 "Radon-based air mass classification", February 11, 2026 "Pollution events, aerosols and clouds", February 25, 2026 "Plankton and greenhouse gases", March 11, 2026 "Combining the project results". In the bottom right corner it says: "More info following soon!"
November 24, 2025 at 9:27 AM
nuclim.bsky.social
As mentioned, we are measuring radon in the air at Graciosa and @maceheadccaps.bsky.social. For this, we are using ANSTO two-filter dual flow-loop radon detectors. That might sound complicated - and the details, of course, are - but today, we want to explain the concept.
Photo: Scott Chambers
Photo of the interior of some apparently big metall "box". In the box at the top there is an area with many colorful and labelled cables. It looks a bit like a fuse box and has a sign saying "Warning Isolate before opening". On the bottom there is a big white cylinder with thick tubes going around it and some cables going here and there. In front of it tools lay around: screw driver, voltmeter, cables, tape measure and some unidentifiable metal parts.
November 20, 2025 at 9:23 AM
Reposted by Project NuClim
xkcd.com
Radon xkcd.com/3037
January 13, 2025 at 8:37 PM
nuclim.bsky.social
On the balcony of that apartment, some hours were spent in deep contemplation of important research questions ...

Text/Photo: Scott Chambers
View from a balkony on a harbour with blue waves and some slight waves. The houses on shore are white.
November 17, 2025 at 11:15 AM
nuclim.bsky.social
Radon (Rn) is a naturally occurring radioactive gas. It is created by the radioactive decay of radium (Ra) in rocks and soil which itself ultimately originates from uranium (U). Radon decays to polonium (Po) and, in the end, to lead (Pb).
Infographic with the title "Uranium decays to radon, Radon decays to lead". The overall colour theme is blue. Below the two sections of the title a atmosphere-earth cross sections is shown for each. In the left one, arrows in the color of the text "radon" in the title point from the earth to the atmosphere. In a magnified area, individual grains are shown. Within one, is the sequence "U → ... → Ra → Rn" and the same arrows point from the grain to the space between grains. Left from this arrangement, the long sequence "Uranium-238 → Thorium-234 → Protactinium-234 → Uranium-234 → Thorium-230 → Radium-226 → Radon-222" is shown from top to bottom with a radioactive sign next to each arrow. On the right side, "Rn → Po → ... → Pb" is shown in the atmosphere with arrows pointing towards the soil. The same sequence is shown in the grain and it says "Rn → Po" in the space between grains with again arrows pointing towards grain. Right from all that the sequence "Radon-222 → Polonium-218 → Lead-214 → Bismuth-214 → Polonium-214 → Lead-210 → Bismuth-210 → Polonium-210 → Lead-206" is listed, just as on the left side.
November 13, 2025 at 7:59 AM
Reposted by Project NuClim
nuclim.bsky.social
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).
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".
September 29, 2025 at 7:11 AM
nuclim.bsky.social
If you are interested to learn more details about NuClim, the scientific background and set-up, have a look at our publication from earlier this year in EPJ Nuclear Sciences & Technologies: doi.org/10.1051/epjn...
November 11, 2025 at 8:11 AM
Reposted by Project NuClim
icos-ri.eu
A first for Europe – the new ICOS Curve interactive tool shows #carbondioxide levels and trends across Europe.

Updated daily, the ICOS Curve is being used at today’s #COP30 Earth Information Day 2025.

Interact with the ICOS Curve here: icos-cp.eu/news-and-eve...
November 10, 2025 at 1:19 PM
nuclim.bsky.social
Sometimes fieldwork and travel is disturbed by unexpected happenings. When Scott was at Graciosa to set up the radon detector, the airport was shut down for half a day because the President of Portugal visited the island. This caused Scott to stay an additional night.

Photo: Scott Chambers
Grey airplane on an airfield with slightly hilly landscape and lightly cloudy hill. On the airplane it says "70501 Bisontes".
November 7, 2025 at 10:12 AM
Reposted by Project NuClim
maceheadccaps.bsky.social
Announcement📢: ACTRIS Science Conference 2026 will take place from 20th to 23rd of April 2026 in Oslo, Norway. Deadline for abstract submission is November 21st 2025 actris.eu/ASC2026
ACTRIS Science Conference 2026 | April 20-23, 2026 - Oslo, Norway | ACTRIS
HomeStructure & ThemesProgramKeynote SpeakersInstructions for PresentersRegistration & Payment
actris.eu
November 5, 2025 at 9:55 AM
nuclim.bsky.social
The UAc team carried out the seasonal water sampling in the bay of Calheta, Santa Cruz do Graciosa, taking samples at different distances from the shore to see how conditions change.

Text/Photo: Paula Eisnecker/Inês de Castro
Photo of a windy coastline with houses along the coast and waves breaking on some rocky shore. In the foreground a white wall with one step goes diagonally across the photo. On this, a range of bags, tubes and penshaped sensors and other unidentifiable things are placed. One woman is sitting in front of it at seems to take some notes.
November 5, 2025 at 8:35 AM
nuclim.bsky.social
The UAc team arrived on Graciosa in the morning with all sampling and laboratory equipment and proceeded directly to the ENA station. There, a potential new collaborative experiment with Dr. Xuemeng Chen (@helsinki.fi) was discussed.

Text/Photo: Paula Eisnecker/Inês de Castro
Photo of a woman with a suitcase trolley smilling into the camera. The trolley is laden with a wooden box, a thermo box and several bags. In the background some modern architectural roof and blue sky are visible. Photo of a compley arrangement of tubes and cables connecting several boxes. On the top of one box a monitor, keyboard and mouse are placed. In the right side of the photo, half a laptop is visible.
November 4, 2025 at 8:52 AM
Reposted by Project NuClim
esaclimate.bsky.social
🛰️ How to monitor the climate: Susanne Mecklenburg explains how we can observe and study climate change in a holistic way – and why looking at the climate variables separately isn’t enough. Learn more! 👇
November 3, 2025 at 3:04 PM
nuclim.bsky.social
Two weeks ago, our colleagues from Terceira (University of the Azores, UAc) were getting ready for their second trip to Graciosa Island! The team led by Joana Barcelos e Ramos do seasonal sampling of the marine community and carbonate system.

Text/Photo: Paula Eisnecker/Inês de Castro
Photo of a woman and a man are looking inside a wooden box where they are sorting boxes with gloves, tubes, bottles, tissues and bags.
November 3, 2025 at 8:44 AM
Reposted by Project NuClim
icos-ri.eu
The ICOS newsletter for October is out now! This month, we launched the ICOS Curve interactive data tool, shared more about the ICOS 10 Year Anniversary Seminar, and delved into the importance of long-term measurements.

Read more: preview.mailerlite.io/preview/7815...
October 30, 2025 at 12:21 PM
nuclim.bsky.social
In addition to the measurements at Mace Head, we are also measuring at the ENA station on Graciosa island (Azores, Portugal). It's the Eastern North Atlantic (hence ENA) atmospheric research station established by Atmospheric Radiation Measurement (ARM) User Facility.

Photo: Scott Chambers
Photo of a row of white containers, view on the front side of the containers with a slight angle to look done the line. The containers have doors. Between and on top of the containers some masts and white structures are installed.
October 29, 2025 at 11:31 AM
Reposted by Project NuClim
icos-ri.eu
ICOS celebrates its 10-year anniversary this year, but some of our stations have around for decades before this. Long-term #greenhousegas measurements are needed to analyse both long-term #climate trends and extreme events. 🌎🌪️

👉 Read more: www.icos-cp.eu/news-and-eve...
Long-term greenhouse gas measurements are the cornerstone of climate science
The ICOS network was founded in a little more than a decade ago, but many of its measurement stations have served scientists long before this. Long-term greenhouse gas measurements are needed to analy...
ow.ly
October 28, 2025 at 1:20 PM
nuclim.bsky.social
Some more pictures from the installation of the ANSTO 1500L Radon Monitor at @maceheadccaps.bsky.social. We look forward to finalising the set up and getting it fully operational.

Photos by Aimon Tanvir @aimontanvir.bsky.social
Photo of an open transporter with a big metallic box and a smaller blue plastic box on top in it. In the fronts some blankets and gloves are places and behind the box some blue barrel is barely visible. Photo of a woman in a yellow jacket and light brown curly hair explaining something next to a metallic box about half her height. In the fron a rack with sme tubing and a machine and some plastic covers of similar size is placed.
October 27, 2025 at 10:02 AM
Reposted by Project NuClim
maceheadccaps.bsky.social
📢 Exciting news! The ANSTO 1500-L Radon Monitor has arrived at @maceheadccaps.bsky.social as part of the #NuClim project.
A key step in classifying background air masses & advancing our understanding of #GreenhouseGas sources & transport. 🌍
📸/Text: Aimon Tanvir
www.linkedin.com/posts/projec...
We’re thrilled to announce that the ANSTO 1500-L Radon Monitor arrived last week at Mace Head station as part of the NuClim project. This addition marks an exciting step forward in our efforts to… | P...
We’re thrilled to announce that the ANSTO 1500-L Radon Monitor arrived last week at Mace Head station as part of the NuClim project. This addition marks an exciting step forward in our efforts to char...
www.linkedin.com
October 24, 2025 at 10:13 AM
nuclim.bsky.social
We’re happy to announce that the radon monitor upgrade arrived last week at @maceheadccaps.bsky.social.
This marks an exciting milestone in our efforts to characterize background air masses and improve understanding of greenhouse gas sources and transport.

Text/Photo: Aimon Tanvir
Photo of a grey, cloudy sky above brown-green and stony landscape. In the front of the picture, two blue boxes, a backpack, two blue barrels and other unidentifiable objects are placed. Photo of the inside of some big metal box with many cables, tubes and a little rack on the right side. In the lower left corner a grey big barrel is labelled "Filter". The whole box is wrapped in some purple-red plastic cover and sits on transport pallet.
October 23, 2025 at 8:32 AM
Reposted by Project NuClim
atmo-access.bsky.social
👁️‍🗨️ Enroll for free for this 3rd edition of the ATMO-ACCESS #MOOC to learn more about Atmospheric Research Infrastructures
🔗 www.fun-mooc.fr/en/courses/a...
📅 Starting Nov 3rd, 2025
⏳ Duration: 5 hours over a period of 2 weeks

@actris.bsky.social @icos-ri.eu @iagos-ri.bsky.social @envri.bsky.social
October 22, 2025 at 3:32 PM
Reposted by Project NuClim
egu.eu
#EGU26 is already on its way 🎉!
Abstract submissions are officially open until 15 January 2026, 13:00 CET.

Let the journey begin and submit your abstract NOW!

👉 Visit https://www.egu26.eu/ for more information!
October 22, 2025 at 10:00 AM
Reposted by Project NuClim
icos-ri.eu
Final reminder - call for session proposals for ICOS Science Conference 2026 closes this Friday 24th October 2025 at noon (12:00 CET)!

Submit your proposal here: www.icos-cp.eu/news-and-eve...

#ICOS2026SC
October 22, 2025 at 11:07 AM