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URN: urn:nbn:de:swb:90-470334
DOI: 10.5194/amtd-8-2735-2015

Use of portable FTIR spectrometers for detecting greenhouse gas emissions of the megacity Berlin - Part 1: Instrumental line shape characterisation and calibration of a quintuple of spectrometers

Frey, M.; Hase, F.; Blumenstock, T.; Groß, J.; Kiel, M.; Mengistu Tsidu, G.; Schäfer, K.; Sha, M. Kumar; Orphal, J.

Several low resolution spectrometers were used to investigate the CO2 and CH4 emissions of the megacity Berlin. Before and after the campaign the instruments were tested side-by-side. An excellent level of agreement and stability was found between the different spectrometers: the drifts in XCO2 and XCH4 are within 0.005 and 0.035%, respectively. The instrumental line shape characteristics of all spectrometers were found to be close to nominal. Cross-calibration factors for XCH4 and XCO2 were established for each spectrometer. An empirical airmass correction factor has been applied. As a last calibration step, using a co-located TCCON spectrometer as a reference, a common factor has been derived for the low-resolution campaign spectrometers, which ensures that the records are compatible to the WMO in-situ scale. Finally as a first result of the Berlin campaign we show the excellent agreement of ground pressure values obtained from total column measurements and in situ records.

Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung - Atmosphärische Spurenstoffe und Fernerkundung (IMK-ASF)
Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator ISSN: 1867-8610
KITopen ID: 1000047033
HGF-Programm 12.02.04; LK 01
Erschienen in Atmospheric Measurement Techniques Discussions
Band 8
Heft 3
Seiten 2735-2766
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
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