Physics
Scientific paper
May 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005eostr..86..178k&link_type=abstract
EOS Transactions, AGU, Volume 86, Issue 18, p. 178-181
Physics
9
Biogeosciences: Biogeochemical Cycles, Processes, And Modeling (0412, 0793, 1615, 4805, 4912), Biogeosciences: Ecosystems, Structure And Dynamics (4815), Paleoceanography: El Nino (4522)
Scientific paper
Identifying the mechanisms driving interannual fluctuations of atmospheric carbon dioxide is necessary for predicting future CO2 concentrations and climate change [Prentice et al., 2001]. A possible clue comes from a well-established positive correlation between atmospheric CO2 growth rates and the El Niño-Southern Oscillation phenomenon [Keeling et al., 1989; Bousquet et al., 2000]. Most tropical droughts are also linked to El Niño [Lyon, 2004], suggesting carbon losses from drought as a major cause for interannual CO2 variations. A lag correlation between 7-month running means (see Figure 1) of monthly atmospheric CO2 concentrations [Cooperative Atmospheric Data Integration Project, 2004] and Niño 3 sea surface temperatures (available at http://www.cpc.noaa.gov/data/indices/) for the period 1979-2003 peaks at a lag of four months with a correlation of 0.49, and a significance level above 99.9% (assuming 42 independent measurements).
Gobron Nadine
Kaminski Thomas
Knorr Wolfgang
Pinty Bernard
Scholze Marko
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