Heidi Hellén
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heidihellen.bsky.social
Heidi Hellén
@heidihellen.bsky.social
150 followers 97 following 2 posts
Atmospheric scientist with a special interest in VOCs and their role in the atmosphere, focusing on their biogenic and anthropogenic sources, mixing ratios, and atmospheric impacts. Head of Air Quality group at Finnish Meteorological Institute.
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heidihellen.bsky.social
I'm so happy to share that our consortium has been selected as a Centre of Excellence in Anthropocenic Chemical Ecology of Forest by the Research Council of Finland.

www.aka.fi/en/about-the...
Research Council of Finland selects 11 new Centres of Excellence in Research
The Research Council of Finland (RCF) has selected eleven Centres of Excellence (CoE) for the 2026–2033 programme period. The eleven CoEs of the new CoE programme include research teams from thi...
www.aka.fi
November 3, 2025 at 6:53 AM
Reposted by Heidi Hellén
ayanezserrano.bsky.social
Happy to announce that our paper on "Unaccounted impacts of diterpene emissions on atmospheric aerosol loadings" has been published after years of efforts. Thank you!@mikaelehn.bsky.social @jpreixach.bsky.social @olgagarmash.bsky.social @apraplan.bsky.social @heidihellen.bsky.social
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Unaccounted impacts of diterpene emissions on atmospheric aerosol loadings
Communications Earth & Environment - Diterpenes are an underestimated source of secondary organic aerosol, accounting for up to 13% of the secondary organic aerosol burden from isoprene,...
rdcu.be
September 26, 2025 at 8:23 AM
heidihellen.bsky.social
Having an audit by ACTRIS for VOCs and NOx measurements at Pallas-Sammalturi station in Northern Finland.
March 26, 2025 at 1:34 PM
Reposted by Heidi Hellén
karrisaarnio.bsky.social
Ilmatieteen laitoksen Pallas-Sammaltunturin mittausasemalla on tällä viikolla osallistuttu ACTRIS-tutkimusinfrastruktuurin auditointiin ja vertailumittauksiin haihtuvien hiilivetyjen (VOC) ja typen oksidien (NOx) osalta.
March 26, 2025 at 1:25 PM
Reposted by Heidi Hellén
katriinakyllonen.bsky.social
Vertailulaboratoriossa olemme juuri julkaisseet päivitetyn Ilmanlaadun Mittausohjeen, joka on kätevä työkalu ilmanlaadun mittauksia suorittaville tahoille. Ohje kokoaa mm. alan lainsäädännön ja standardien tärkeimmät kohdat yksiin kansiin.

📖 Tutustu ohjeeseen 📖
helda.helsinki.fi/items/4423f9...
January 31, 2025 at 3:16 PM
Reposted by Heidi Hellén
katriinakyllonen.bsky.social
Uudistettu ilmanlaatudirektiivi 2024/2881/EC astuu voimaan tänään. ✨

Uudet kireämmät raja-arvot ja entistä parempi seuranta ovat tärkeitä askeleita kohti puhtaampaa ilmaa, mikä paljastuu tänään julkaistuista EEA:n raporteista. Kannattaa tutustua! 🌍

www.eea.europa.eu/en/newsroom/...
Health and environment impacts of air pollution exposure remain high across Europe
Just under 240,000 deaths per year in the European Union can be attributed to exposure to fine particulate matter, a key air pollutant, according to the latest European Environment Agency (EEA) air qu...
www.eea.europa.eu
December 10, 2024 at 9:58 AM