Erlangen 2018 – wissenschaftliches Programm

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UP: Fachverband Umweltphysik

UP 2: Atmosphere - trace gases, Methods - remote sensing

UP 2.2: Vortrag

Montag, 5. März 2018, 11:15–11:30, G 1.011

Quantitative analysis of complex CH4 sources using airborne remote sensing and in-situ observations — •Sven Krautwurst, Konstantin Gerilowski, Thomas Krings, Jakob Borchardt, Michael Buchwitz, John P. Burrows, and Heinrich Bovensmann — Institute of Environmental Physics, University of Bremen, Germany

Methane (CH4) is the second most important anthropogenic greenhouse gas. However, its anthropogenic emissions, largely originating from localized sources such as fossil fuel exploitation and extraction sites or landfills, are often not readily assessed by current measurement systems and networks. A tool used to better understand and constrain emissions from these sources is the optical remote sensing instrument MAMAP (Methane Airborne MAPper), operated from aircraft. MAMAP delivers the background normalized column averaged dry air mole fractions for methane XCH4 derived from absorption spectroscopic measurements in the short-wave infrared with a precision of about 0.3%.

This talk presents MAMAP observations accompanied by airborne in-situ measurements by a Picarro greenhouse gas in-situ analyser aboard the same aircraft over oil fields and landfills in California in 2014. Based on the two data sets, independent emission rate estimates for an oil field complex in the San Joaquin Valley and a landfill in the Los Angeles Basin were derived and compared to inventory values.