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| Titel |
Point source emission rate estimates from MAMAP airborne remote sensing total column observations of atmospheric CO2 and CH4 |
| VerfasserIn |
Thomas Krings, Konstantin Gerilowski, Michael Buchwitz, Jörg Hartmann, Torsten Sachs, Jörg Erzinger, John P. Burrows, Heinrich Bovensmann |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250072358
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| Zusammenfassung |
| Large parts of the anthropogenic greenhouse gas emissions of CO2 and CH4 are released
from localised and point sources such as power plants or as fugitive emissions from fossil
fuel mining and production sites. These emissions, however, are often not readily
assessed by current measurement systems and networks. A tool developed to better
understand point sources of CO2 and CH4 is the optical remote sensing instrument
MAMAP (Methane Airborne MAPer), operated from aircraft. After a recent instrument
modification, retrievals of the column averaged dry air mole fractions for methane
XCH4 (or for carbon dioxide XCO2) derived from MAMAP observations in the
short-wave infrared, have a precision of about 0.4% significantly improving data
quality.
MAMAP total column data also serve as a testbed for inversion concepts for greenhouse
gas emissions from point sources using total column atmospheric concentration
measurements. As information on wind speed is an important input parameter for the
inference of emission rates using MAMAP data, recent measurement campaigns comprised
an in-situ wind probe operated onboard the same aircraft. Incorporation of these wind
measurements in combination with model data leads to a large reduction of uncertainties on
the inversion result. Using the examples of two coal mine ventilation shafts in Western
Germany as well as other anthropogenic targets, the value of high resolution total column
data to obtain emission rate estimates is demonstrated. MAMAP has also been tested in
sunglint geometry over the ocean and has therefore the potential for application also to
offshore emission sites. |
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