TY  - JOUR
AU  - Warneke, T.
AU  - Meirink, J. F.
AU  - Begamaschi, P.
AU  - Grooß, J.-U.
AU  - Notholt, J.
AU  - Toon, G. C.
AU  - Velazco, V.
AU  - Goede, A.P.H.
AU  - Schrems, O.
TI  - Seasonal an latitudinal variation of atmospheric methane: A ground-based an ship-borne solar IR spectroscopic study
JO  - Geophysical research letters
VL  - 33
SN  - 0094-8276
CY  - Washington, DC
PB  - American Geophysical Union
M1  - PreJuSER-52928
SP  - L14812
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000239489000001
DO  - DOI:10.1029/2006GL025874
UR  - https://juser.fz-juelich.de/record/52928
ER  -