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Showing 1–7 of 7 results

Advanced filters: Author: Theodoros Christoudias Clear advanced filters

Isoprene chemistry under upper-tropospheric conditions

Experiments under upper-tropospheric conditions map the chemical formation of isoprene oxygenated organic molecules (important molecules for new particle formation) and reveal that relative radical ratios control their composition

Douglas M. Russell
Felix Kunkler
Joachim Curtius
ResearchOpen Access29 Sept 2025
Nature Communications

Volume: 16, P: 1-14
New particle formation from isoprene under upper-tropospheric conditions

Experiments performed in the CERN CLOUD chamber show that, under upper-tropospheric conditions, new atmospheric particle formation may be initiated by the reaction of hydroxyl radicals with isoprene emitted by rainforests.

Jiali Shen
Douglas M. Russell
Xu-Cheng He
ResearchOpen Access04 Dec 2024
Nature

Volume: 636, P: 115-123
Synergistic HNO₃–H₂SO₄–NH₃ upper tropospheric particle formation

By performing experiments under upper tropospheric conditions, nitric acid, sulfuric acid and ammonia can form particles synergistically, at rates orders of magnitude faster than any two of the three components.

Mingyi Wang
Mao Xiao
Neil M. Donahue
ResearchOpen Access18 May 2022
Nature

Volume: 605, P: 483-489
Global high-resolution ultrafine particle number concentrations through data fusion with machine learning

Pantelis Georgiades
Matthias Kohl
Jos Lelieveld
ResearchOpen Access14 Nov 2025
Scientific Data

Volume: 12, P: 1-21
The impact of ammonia on particle formation in the Asian Tropopause Aerosol Layer

Christos Xenofontos
Matthias Kohl
Theodoros Christoudias
ResearchOpen Access12 Sept 2024
npj Climate and Atmospheric Science

Volume: 7, P: 1-12
Earth’s atmosphere protects the biosphere from nearby supernovae

Impacts of enhanced cosmic radiation from a nearby supernova on Earth’s biosphere would be limited by compensating effects in ozone catalytic chemical cycles and the resulting increase in cloud and aerosol abundance, according to Earth system modelling.

Theodoros Christoudias
Jasper Kirkby
Jos Lelieveld
ResearchOpen Access14 Jun 2024
Communications Earth & Environment

Volume: 5, P: 1-8
Atmospheric new particle formation from the CERN CLOUD experiment

The CLOUD experiment provides important insights into new particle formation in different atmospheric environments.

Jasper Kirkby
António Amorim
Douglas R. Worsnop
Reviews07 Nov 2023
Nature Geoscience

Volume: 16, P: 948-957