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EPHEMERAL

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Detection and Speciation of Gas Phase Atmospheric Peroxy and Criegee Radicals

Earth’s lower atmosphere is oxidative and its chemistry consists of reactions of short-lived chemical compounds called radicals, controlling the abundance of key compounds, such as of ozone and greenhouse gases. In spite of decade... ver más

31/03/2026

KTH

3M€

Presupuesto del proyecto: 3M€

Líder del proyecto

KUNGLIGA TEKNISKA HOEGSKOLAN No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Ver 6 Participantes

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2020-08-20

Línea de financiación objetivo El proyecto se financió a través de la siguiente ayuda:

ERC-2019-ADG: ERC Advanced Grant

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Cerrada hace 5 años

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6 Participantes

KTH

2.67M€ | Lider

HUDISA DESARROLLO INDUSTRIAL

251.62K€ | Participante

UNIVERSITE LYON 1 CLAUDE BER...

N.D. | Participante

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Duración del proyecto: 67 meses Fecha Inicio: 2020-08-20
Fecha Fin: 2026-03-31

Líder del proyecto

KUNGLIGA TEKNISKA HOEGSKOLAN

TRL 4-5

Presupuesto del proyecto 3M€

Descripción del proyecto Earth’s lower atmosphere is oxidative and its chemistry consists of reactions of short-lived chemical compounds called radicals, controlling the abundance of key compounds, such as of ozone and greenhouse gases. In spite of decades of investigation many atmospheric observations indicate that important aspects of this radical chemistry remain ill-understood, in particular in the reactions of the multitude of organic radicals present in the atmosphere, peroxy radicals (RO2) and Criegee Intermediates (CI). Detailed investigations of these reactions have been limited for over 50 years by instrumental challenges, in particular by the lack of technique detecting individual radicals (speciation). Recently, the Nozière group achieved an important milestone by developing the first technique, based on Chemical Ionization Mass Spectrometry or CIMS, speciating the volatile RO2 that are important for the atmospheric oxidation cycles. The objective of EPHEMERAL is to solve key questions in atmospheric radical chemistry by overcoming the long-standing instrumental challenges with cutting-edge developments based on this new technique. Three strategic directions will be pursued: - in laboratory, the detection of CI will be investigated and gas-phase reactions of RO2 and CI studied, - an instrument will be built to detect individual RO2 and CI in the atmosphere, thus achieving a historical milestone, - the reactivity of these radicals at/with surfaces will be investigated in laboratory, assessing for the first time the role of clouds and aerosols in the oxidation cycles and setting the bases for next-generation challenges. The fundamental knowledge and atmospheric observations resulting from this project will dramatically improve the understanding of the oxidation cycles and the predictions of the atmospheric chemical composition, from the regional to the climate scale. EPHEMERAL will thus place Europe at the leading edge in the discipline, scientifically and technologically.

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