Ruprecht-Karls-Universität Heidelberg

Details zum Stellenangebot Nr. 255

Development of a stand-alone atmospheric greenhouse gas spectrometer – deployment on research vessel

Typ Masterarbeit
Arbeitsgruppe  Fernerkundung von Treibhausgasen
Kontakt Prof. Dr. André Butz ; Tel 54 6310
Weitere Infos ./details/255_Master_RVSonne.pdf
Datum 2018-06-15 10:11:39


Greenhouse gases: Man-made emissions of the greenhouse gases carbon dioxide (CO2) and methane (CH4) drive contemporary climate change. While the rising atmospheric CO2 and CH4 concentrations in the Earth’s atmosphere are evident, our knowledge on how sources and sinks act on regional-to-local scales and how they evolve in the future under climatic and societal change is highly uncertain. To reduce these uncertainties, it requires advanced observation techniques, data reduction methods, and modelling tools that enable attribution of the minute atmospheric concentration gradients to the driving processes of the carbon cycle and human activity. Project: Here, we propose to further develop a state-of-theart Fourier Transform Spectrometer (FTS) that is capable of measuring CO2 and CH4 (and some other gases such as CO) with high accuracy using molecular absorption spectroscopy in the shortwave infrared spectral range. Developments should focus on making the instrument suitable for autonomous deployments on mobile platforms. The setup will be tried during a cruise of the research vessel Sonne from Mexico to Singapur in May/June/July 2019. The goal is a proof-of-concept for future stand-alone, continous deployment on freight ships Tasks: • Learn how to operate the greenhouse gas spectrometer EM27/SUN locally e.g. at our roof-top laboratory. • Setup portable infrastructures that enable stand-alone deployment on mobile platforms, i.e. vibration damping, weather-proof housing, wireless communication, procedure automation. • Deploy and operate spectrometer on research vessel Sonne during its cruise from Mexico to Singapur in May/June/July 2019. • Derive highly accurate CO2, CH4 (and CO) concentrations across the Pacific ocean, document achieveable accuracy, compare to coincident satellite records (e.g. Sentinel-5 Precursor). Contact: Prof. Dr. André Butz, Relevant work: A. Butz, et al.,doi:10.5194/amt-10-1-2017, 2017 Klappenbach, F., et al., doi:10.5194/amt-8-5023-2015, 2015 Requirements: • Keen interest in optics, absorption spectroscopy, atmospheric radiative transfer. • Hands-on approach to technical developments. • Capable of 6-weeks ship cruise through the Pacific (seasickness-resistent, medically uncritical record etc.).
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