%0 Journal Article
%A Warneke, T.
%A Meirink, J. F.
%A Begamaschi, P.
%A Grooß, J.-U.
%A Notholt, J.
%A Toon, G. C.
%A Velazco, V.
%A Goede, A.P.H.
%A Schrems, O.
%T Seasonal an latitudinal variation of atmospheric methane: A ground-based an ship-borne solar IR spectroscopic study
%J Geophysical research letters
%V 33
%@ 0094-8276
%C Washington, DC
%I American Geophysical Union
%M PreJuSER-52928
%P L14812
%D 2006
%Z Record converted from VDB: 12.11.2012
%X Column-averaged volume mixing ratios of CH4 were retrieved with a precision of better than 0.5% from infrared solar absorption spectra obtained at Ny-Alesund ( Spitsbergen, 79 degrees N) between 1997 and 2004 and during two ship cruises (54 degrees N - 34 degrees S) on the Atlantic in 2003. The retrieval has been performed in a spectral region available to all operational FTIR ( Fourier Transform InfraRed) spectrometers performing solar absorption measurements. The seasonality and the long-term increase of the tropospheric volume-mixing ratio, derived from the infrared measurements agree well with data from surface sampling at this site. The latitudinal variation of ship-borne measurements between 54 degrees N and 34 degrees S is in agreement with inverse model simulations which are optimized vs. the global NOAA/ESRL measurements.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000239489000001
%R 10.1029/2006GL025874
%U https://juser.fz-juelich.de/record/52928