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Institute of Energy and Climate Research

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Global modelling of chemical processes

The research goal of the global modelling group is to understand and quantify, at global scale, the complex multiphase chemical transformations affecting atmospheric composition and climate.

Our research foci are:

  • Atmospheric oxidation capacity
  • Global cycles of pollutants
  • Organic aerosol formation
  • Hazardous air organic substances
  • Interactions between air composition and weather

We developed the global chemistry climate model ECHAM-HAMMOZ and explore new ways of evaluating the model with atmospheric composition observations. Our TOAR database contains the world’s largest collection of surface ozone observations and we make this available through the JOIN web interface. Recently, EMAC has been implemented as a second global chemistry climate model. EMAC’s chemical mechanism contains more than 2000 reactions including relatively detailed descriptions of the oxidation of isoprene, selected monoterpenes, and aromatics.

Simulation der KohlenmonoxidkonzentrationAusschnitt einer globalen Simulation der Kohlenmonoxidkonzentration in etwa 5 km Höhe über Europa. Man erkennt eine "Wolke" mit erhöhten Konzentrationen, die vom nordamerikanischen Kontinent her angeweht wird sowie ein Gebiet niedrigerer Konzentrationen, welches aus den Tropen nach Südeuropa transportiert wird. Zum Laden der Animation (~2MB) bitte auf das Bild klicken.

* Jöckel et al., 2010, Lelieveld et al., 2016

Latest Results:

02-23-2017: Uncertainties in modelling global reactive VOC

02-19-2017: First complete release of the global chemistry climate model ECHAM-HAMMOZ

06-04-2016: A negative climate feedback resulting from N2O chemistry

04-15-2016: Jülich Open Web Services Interface (JOIN) Version 2.011 released


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