Spring enhancement and summer reduction in carbon uptake during the 2018 drought in northwestern Europe.

ABSTRACT: We analysed gross primary productivity (GPP), total ecosystem respiration (TER) and the resulting net ecosystem exchange (NEE) of carbon dioxide (CO₂) by the terrestrial biosphere during the summer of 2018 through observed changes across the Integrated Carbon Observation System (ICOS) network, through biosphere and inverse modelling, and through remote sensing. Highly correlated yet independently-derived reductions in productivity from sun-induced fluorescence, vegetative near-infrared reflectance, and GPP simulated by the Simple Biosphere model version 4 (SiB4) suggest a 130-340 TgC GPP reduction in July-August-September (JAS) of 2018. This occurs over an area of 1.6 × 10⁶ km² with anomalously low precipitation in northwestern and central Europe. In this d

SUBMITTER: Smith NE 

PROVIDER: S-EPMC7485100 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature