TY - JOUR
T1 - Satellite-derived increases in net primary productivity across North America, 1982-1998
AU - Hicke, Jeffrey A.
AU - Asner, Gregory P.
AU - Randerson, James T.
AU - Tucker, Compton
AU - Los, Sietse
AU - Birdsey, Richard
AU - Jenkins, Jennifer C.
AU - Field, Christopher
AU - Holland, Elisabeth
PY - 2002/5/15
Y1 - 2002/5/15
N2 - We used a new 17-year, high spatial resolution satellite record and a carbon cycle model to explore how changing net primary productivity (NPP) contributed to a proposed carbon (C) sink in North America. We found a small but significant increase in NPP, 0.03 Pg C yr-2 or 8% over 17 years, that could explain a substantial fraction of the C sink. The largest increases occurred in the central and southeastern United States, eastern Canada, and northwestern North America, and were consistent with NPP trends derived from forest inventories and crop yields. Interannual NPP variability was small, implying that the large interannual variability in the C sink found in previous studies were driven by changes in heterotrophic respiration.
AB - We used a new 17-year, high spatial resolution satellite record and a carbon cycle model to explore how changing net primary productivity (NPP) contributed to a proposed carbon (C) sink in North America. We found a small but significant increase in NPP, 0.03 Pg C yr-2 or 8% over 17 years, that could explain a substantial fraction of the C sink. The largest increases occurred in the central and southeastern United States, eastern Canada, and northwestern North America, and were consistent with NPP trends derived from forest inventories and crop yields. Interannual NPP variability was small, implying that the large interannual variability in the C sink found in previous studies were driven by changes in heterotrophic respiration.
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U2 - 10.1029/2001gl013578
DO - 10.1029/2001gl013578
M3 - Article
AN - SCOPUS:0037095850
SN - 0094-8276
VL - 29
SP - 69-1-69-4
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 10
ER -