Projekt

Ion assisted cloud formation

Udbyder

Vejleder

Sted

København og omegn

The nucleation of molecular clusters is estimated to contribute about half of all cloud condensation nuclei. A central molecule in nucleation is sulfuric acid H2SO4. Because of their interaction with sulfuric acid dipoles and their relative higher stability, clusters with a central hydrogen sulfate ion HSO4^{-} hereby play an important role in the process of nucleation.

The purpose of this project is to understand the microscopic properties of sulphuric acid-water (H2SO4-H2O) clusters and hydrogen sulfate ion-water (HSO4^{-}-H2O) clusters and their interaction with each other. We are seeking to understand the spatial, energy and size distribution of such clusters and especially the formation rate of large clusters, i.e. per volume and time, as a precursor for the formation of cloud condensation nuclei.

A current version of our Monte Carlo particle code is written in Python and one part of the project will be to transfer the code to a high-end programming language like Fortran or C++ in order to speed up simulations. Additionally, the numerical stability of electromagnetic forces needs to be reevaluated. Once, this is done, simulations will be performed in order to understand the influence of hydrogen sulfate ions on the formation of large clusters.

We at DTU Space, located in Lyngby, study phenomena related to various stages of cloud formation. Recently, we have started to develop a particle Monte Carlo code tracing individual H2SO4-H2O clusters and monitor their spatial and size distribution leading to the early stages of cloud formation.

If we have caught your attention, please contact koehn@space.dtu.dk or enghoff@space.dtu.dk to obtain more information.


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Kontakt

Virksomhed/organisation

DTU Space

Navn

Christoph Köhn

Stilling

Forsker

Mail

koehn@space.dtu.dk

Vejleder-info

Kandidatuddannelsen i Geofysik og Rumteknologi

Vejleder

Christoph Köhn

Medvejledere

Martin Andreas Bødker Enghoff

Type

Kandidatspeciale

OM DTU

DTU er et teknisk eliteuniversitet med international rækkevidde og standard. Vores mission er at udvikle og nyttiggøre naturvidenskab og teknisk videnskab til gavn for samfundet. 10.000 studerende uddanner sig her til fremtiden, og 5.700 medarbejdere har hver dag fokus på uddannelse, forskning, myndighedsrådgivning og innovation, som bidrager til øget vækst og velfærd.

Find os her

Anker Engelunds Vej 1
Bygning 101A
2800 Kgs. Lyngby


45 25 25 25

dtu@dtu.dk

CVR-nr. 30 06 09 46

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