Рубрики:
LONG-TERM
TERRESTRIAL BIOSPHERE
FOREST ECOSYSTEMS
PLANT-GROWTH
TRANSPORT
SINK
SEQUESTRATION
INVERSIONS
EMISSIONS
DIOXIDE
LONG-TERM
TERRESTRIAL BIOSPHERE
FOREST ECOSYSTEMS
PLANT-GROWTH
TRANSPORT
SINK
SEQUESTRATION
INVERSIONS
EMISSIONS
DIOXIDE
Аннотация: Measurements of midday vertical atmospheric CO(2) distributions reveal annual-mean vertical CO(2) gradients that are inconsistent with atmospheric models that estimate a large transfer of terrestrial carbon from tropical to northern latitudes. The three models that most closely reproduce the observed annual-mean vertical CO(2) gradients estimate weaker northern uptake of -1.5 petagrams of carbon per year (Pg C year(-1)) and weaker tropical emission of +0.1 Pg C year(-1) compared with previous consensus estimates of -2.4 and +1.8 Pg C year(-1), respectively. This suggests that northern terrestrial uptake of industrial CO(2) emissions plays a smaller role than previously thought and that, after subtracting land-use emissions, tropical ecosystems may currently be strong sinks for CO(2).
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Scopus
Держатели документа:
Natl Ctr Atmospher Res, Boulder, CO 80305 USA
Purdue Univ, Dept Earth & Atmospher Sci, W Lafayette, IN 47907 USA
Natl Ocean & Atmospher Adm, Boulder, CO 80305 USA
Lab Sci Climat & Environm, F-91191 Gif Sur Yvette, France
Tohoku Univ, Ctr Atmospher & Ocean Studies, Sendai, Miyagi 9808578, Japan
Natl Inst Environm Studies, Tsukuba, Ibaraki 3058506, Japan
Nagoya Univ, Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi 4648601, Japan
Cent Aerol Observ, Dolgoprudnyi 141700, Russia
Univ Leeds, Sch Geog, Leeds LS2 9JT, W Yorkshire, England
Max Planck Inst Biogeochem, D-07701 Jena, Germany
Sukachev Inst Forest, Krasnoyarsk 660036, Russia
CSIRO Marine & Atmospher Res, Aspendale, Vic 3195, Australia
Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA
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