CliSAP successfully finished in 2018. Climate research continues in the Cluster of Excellence "CLICCS".

Visiting CliSAP: Richard Larsson


Richard Larsson is a doctoral candidate in the Department of Computer Science, Electrical and Space Engineering at the Division of Space Technology, Luleå University of Technology, Kiruna, Sweden. His research interest focuses on utilizing advancements in spectroscopy in radiative transfer simulations – to decrease errors in retrieved physical parameters.

"It is impossible to not be interested in climate research." During his stay in Hamburg, CliSAP guest Richard Larsson will implement new algorithms in the Atmospheric Radiative Transfer Simulator.

Since when are you interested in climate research? And why does it fascinate you?
It is impossible to not be interested in climate research.  A lot of reports and scientific articles discuss climate change and its consequences.  It even reaches everyday news reports, which unfortunately makes it a politicized subject with all the kerfuffle that this entails.  It is fascinating that small changes can influence the global scheme of things.

Why do you visit Hamburg and the Cluster of Excellence CliSAP?
To work with professor Stefan Bühler on implementing new algorithms in the Atmospheric Radiative Transfer Simulator. The model has previously focused on lower frequencies of emission, but we will update it to work with thermal radiation influenced by the spectroscopy of carbon dioxide.

Not everybody at the Cluster of Excellence studied Computer Science. Could you explain in easy words what you want to work on while you are at CliSAP?
Carbon dioxide absorbs and re-emits radiation from Earth's temperature and radiation fields.  The spectroscopy of carbon dioxide governs how this emission and absorption happens; one consequence of the process is that the Earth's atmosphere retains a lot of energy that would otherwise be emitted to space.  I will add capabilities to our transfer model to simulate this radiation, allowing us to look at carbon dioxide spectrum in more details.  This will change our radiative flux calculations slightly, but also let the detailed spectra be much better understood.

What can you take with you when you are going back home?
I will leave with contacts and more knowledge about what people work with here in Hamburg.

What could develop from your trip to Hamburg?

Direct future collaborations with the radiative transfer group at the University of Hamburg includes both improving our own radiative flux calculations because of changed carbon dioxide spectroscopy, but also temperature retrieval simulations from high altitudes using molecular oxygen.

Richard Larsson will give a seminar on November 5th at 11.00 am in room 1532 at the Geomatikum about previous work he has done modeling the Zeeman effect on molecular oxygen.

He can be found  at the Geomatikum, floor 15, room 1533 until November 12th.