Seasonal and latitudinal variations of column averaged volume-mixing ratios of 
atmospheric CO2

Warneke, T.; Yang, Z.; Olsen, S.; Körner, S.; Notholt, J.; Toon, G. C.; Velazco, V.; Schulz, A.; Schrems, O.

doi:10.1029/2004GL021597

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Seasonal and latitudinal variations of column averaged volume-mixing ratios of atmospheric CO₂

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Körner, S.
Airborne Trace Gas Measurements and Mesoscale Modelling, Dr. habil. C. Gerbig, Department Biogeochemical Systems, Prof. M. Heimann, Max Planck Institute for Biogeochemistry, Max Planck Society;

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http://dx.doi.org/10.1029/2004GL021597
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Warneke, T., Yang, Z., Olsen, S., Körner, S., Notholt, J., Toon, G. C., et al. (2005). Seasonal and latitudinal variations of column averaged volume-mixing ratios of atmospheric CO₂. Geophysical Research Letters, 32(3), L03808. doi:10.1029/2004GL021597.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-000E-D3BA-2

Zusammenfassung

Column-averaged volume mixing ratios of CO₂ have been obtained by ground based high-resolution solar absorption spectrometry at Ny-Alesund (Spitsbergen, 79degreesN) in 2002-2003 and during two ship cruises (54degreesN-34degreesS on the Atlantic in 2003. Precisions are better than 0.4% at Ny-Alesund and better than 0.6% for the cruises. The observed 11 ppmv (part per million by volume) seasonal amplitude of the CO₂ column at Ny-Alesund is about 5 ppmv smaller than surface in situ data and 2-4 ppmv greater than model-predictions. The latitudinal gradient of column CO₂ inferred from shipborne measurements is less than 2 ppmv in Oct/Nov 2003. (biomass burning) and natural variations. Low CO₂ columns observed between 5degreesS-15degreesS are attributed to a strong seasonal amplitude of CO₂ over Central Africa. [References: 16]