Boreal ecosystems sequestered more carbon in warmer years

Details Boreal ecosystems sequestered more carbon in warmer years Boreal ecosystems sequestered more carbon in warmer years

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3310803c&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 10, CiteID L10803

Physics

7

Atmospheric Composition And Structure: Biosphere/Atmosphere Interactions (0426, 1610), Biogeosciences: Ecosystems, Structure And Dynamics (4815), Biogeosciences: Climate Dynamics (1620), Atmospheric Processes: Boundary Layer Processes, Atmospheric Processes: Land/Atmosphere Interactions (1218, 1631, 1843)

Scientific paper

A 13-year (1990-1996, 1999-2004), hourly air CO2 record measured on a 40 m tower in northern Canada is analyzed against interpolated marine boundary layer CO2 data representing the free troposphere above the tower. In warmer years, the planetary boundary layer was more depleted with CO2, suggesting that the land area (103-104 km2) upwind of the tower sequestered more carbon. After using a novel approach to derive the photosynthetic flux from the air CO2 diurnal variation pattern, it is confirmed that boreal ecosystem photosynthesis increased more than ecosystem respiration in warmer years.

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