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CO2 seasonality indicates origins of post-Pinatubo sink A. Angert, S. Biraud, C. Bonfils, W. Buermann, and I. Fung
 

Summary: CO2 seasonality indicates origins of post-Pinatubo sink
A. Angert, S. Biraud, C. Bonfils, W. Buermann, and I. Fung
Berkeley Atmospheric Sciences Center, University of California, Berkeley, California, USA
Received 18 February 2004; revised 29 March 2004; accepted 6 May 2004; published 5 June 2004.
[1] An enhanced carbon sink of $2PgC/yr was observed
following the Mount Pinatubo eruption. In this study we
used a biogeochemical model (CASA) linked to an
atmospheric tracer model (MATCH) with interannually
varying transport, to predict the atmospheric CO2 response
to various hypotheses for the enhanced sink. By comparing
the modeled CO2 growth rate, and seasonal minimum with
observation we found that global Net Primary Production
could not have increased following the eruption. The
enhanced sink is explained by several land and ocean sink
mechanisms acting in concert. INDEX TERMS: 0312
Atmospheric Composition and Structure: Air/sea constituent
fluxes (3339, 4504); 1610 Global Change: Atmosphere (0315,
0325); 1615 Global Change: Biogeochemical processes (4805).
Citation: Angert, A., S. Biraud, C. Bonfils, W. Buermann,
and I. Fung (2004), CO2 seasonality indicates origins of post-

  

Source: Alon, Angert - Institute of Earth Sciences, Hebrew University of Jerusalem

 

Collections: Geosciences