Acronym:NUCLIM
Cost Center:1229
Title:Nuclear observations to improve Climate Research and GHG emission estimates
Start-End:01-09-2024 - 31-08-2028
Entidade Beneficiária Principal:Fundação Gaspar Frutuoso
Gestores da FGF: Matilde Pereira
Responsible Researcher:Joana Barcelos e Ramos
R&D Units:IITAA - Instituto de Investigação em Tecnologias Agrárias e do Ambiente
EntidadeFundação Gaspar Frutuoso
Total Financing86.651,25 €
Comissão Europeia - Comunidade Europeia da Energia Atómica (100.0 %)86.651,25 €
Main Objectives:

Radon (Rn-222) is a naturally occurring radioactive noble gas of predominantly terrestrial origin, with a hal?ife of 3.8 days. This combination of characteristics makes radon an unique tracer. Its half-life is long enough to enable radon to accumulate in the continental boundary layer, while short enough to have a strong vertical gradient and very low radon concentrations in the free troposphere. Furthermore, radon’s half-life is comparable to lifetimes of several short-lived atmospheric pollutants (NOx, SO2, CO, O3), and to timescales of relevant atmospheric processes, making it an ideal atmospheric tracer. Constraining long-term changes in hemispheric mean greenhouse gases (GHGs) requires accurate and current observations of baseline conditions from air masses representative of hemispheric background values - typically air that is well mixed and has been removed from the in?uence of point sources of pollution.

Project Description:

Radon (Rn-222) is a naturally occurring radioactive noble gas of predominantly terrestrial origin, with a hal?ife of 3.8 days. This combination of characteristics makes radon an unique tracer. Its half-life is long enough to enable radon to accumulate in the continental boundary layer, while short enough to have a strong vertical gradient and very low radon concentrations in the free troposphere. Furthermore, radon’s half-life is comparable to lifetimes of several short-lived atmospheric pollutants (NOx, SO2, CO, O3), and to timescales of relevant atmospheric processes, making it an ideal atmospheric tracer. Constraining long-term changes in hemispheric mean greenhouse gases (GHGs) requires accurate and current observations of baseline conditions from air masses representative of hemispheric background values - typically air that is well mixed and has been removed from the in?uence of point sources of pollution.

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