Science · 2001 · 640 citations · 25 references
Sea‑WiFS delivers global monthly measurements of oceanic phytoplankton chlorophyll biomass and terrestrial light harvesting. Using these measurements, the authors compared simultaneous oceanic and terrestrial net primary production during a major El Niño–La Niña transition. Between September 1997 and August 2000, global biospheric net primary production fluctuated by 6 Pg C yr⁻¹, with pronounced tropical oceanic increases during ENSO‑driven upwelling, while land NPP showed no clear global ENSO signal despite notable regional variations.
The Sea-viewing Wide Field-of-view Sensor (SeaWiFS) provides global monthly measurements of both oceanic phytoplankton chlorophyll biomass and light harvesting by land plants. These measurements allowed the comparison of simultaneous ocean and land net primary production (NPP) responses to a major El Niño to La Niña transition. Between September 1997 and August 2000, biospheric NPP varied by 6 petagrams of carbon per year (from 111 to 117 petagrams of carbon per year). Increases in ocean NPP were pronounced in tropical regions where El Niño–Southern Oscillation (ENSO) impacts on upwelling and nutrient availability were greatest. Globally, land NPP did not exhibit a clear ENSO response, although regional changes were substantial.
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Increased plant growth in the northern high latitudes from 1981 to 1991
Ranga B. Myneni, Charles D. Keeling, Compton J. Tucker et al. · Nature · 1997 · 3.5K citations
Climatology, Engineering, Botany +7