Signature of stratospheric air at the Tibetan Plateau

Details Signature of stratospheric air at the Tibetan Plateau Signature of stratospheric air at the Tibetan Plateau

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3520816l&link_type=abstract

Geophysical Research Letters, Volume 35, Issue 20, CiteID L20816

Other

Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions (0426, 1610), Biogeosciences: Biogeochemical Cycles, Processes, And Modeling (0412, 0793, 1615, 4805, 4912), Atmospheric Composition And Structure: Middle Atmosphere: Constituent Transport And Chemistry (3334), Atmospheric Composition And Structure: Troposphere: Constituent Transport And Chemistry, Global Change: Biogeochemical Cycles, Processes, And Modeling (0412, 0414, 0793, 4805, 4912)

Scientific paper

Current estimates of gross carbon flux tend to ignore the downwelling flux of CO2 from the stratosphere. Observations showed that there is a phase shift between the time series for the concentration of the standard isotopologue C16O16O and C16O18O at Waliguan, China (36°17'N, 100°54'E, 3816 m) and several other places. Previous attempts to explain the shift have not been satisfactory. Here we show that the phase shift could be explained by the downwelling air from the stratosphere, and demonstrate that this source of CO2 provides a useful tool for constraining the carbon cycle. Using O3 as a proxy of stratosphere-troposphere exchange, we find excellent correlation between O3 and C16O18O observed at the Waliguan Observatory. The observed variability of C16O18O is consistent with model predictions, thus supporting that the surface air has significant contributions from the stratosphere. Quantitative modeling may provide a powerful tool for constraining the sources and sinks of CO2 using the isotopically enriched CO2 from the stratosphere as a tracer.

Affiliated with

Also associated with

No associations

Rating

Signature of stratospheric air at the Tibetan Plateau does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Signature of stratospheric air at the Tibetan Plateau, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signature of stratospheric air at the Tibetan Plateau will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1702394