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Fast reduction of Atlantic SST threatens Europe-wide gross primary productivity under positive and negative CO2 emissions

Environmental Studies and Forestry

Fast reduction of Atlantic SST threatens Europe-wide gross primary productivity under positive and negative CO2 emissions

Y. Yang, J. Shin, et al.

This groundbreaking study reveals how European Gross Primary Production (GPP) responds asymmetrically to CO2 changes, highlighting the critical role of ocean circulation recovery. The findings caution policymakers about potential sudden drops in GPP due to delayed Atlantic Meridional Overturning Circulation recovery, influencing agricultural strategies. Research conducted by Young-Min Yang, Jongsoo Shin, So-Won Park, Jae-Heung Park, Soon-II An, Jong-Seong Kug, Sang-Wook Yeh, June-Yi Lee, Bin Wang, Tim Li, and Nari Im.

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Playback language: English
Abstract
Climate change mitigation through negative CO2 emissions is crucial. This study uses large ensemble simulations to investigate Gross Primary Production (GPP) responses to CO2 forcings. Findings reveal a significant asymmetry in European GPP response to CO2 ramp-up and ramp-down, with rapid GPP decline during CO2 removal due to North Atlantic Sea Surface Temperature (SST) cooling from delayed Atlantic Meridional Overturning Circulation (AMOC) recovery. This asymmetry, consistent across multi-model simulations, highlights the implications of delayed ocean circulation recovery for accelerating terrestrial GPP reduction, crucial for policymakers in projecting agricultural activity and formulating GPP control policies.
Publisher
npj Climate and Atmospheric Science
Published On
Jun 01, 2024
Authors
Young-Min Yang, Jongsoo Shin, So-Won Park, Jae-Heung Park, Soon-II An, Jong-Seong Kug, Sang-Wook Yeh, June-Yi Lee, Bin Wang, Tim Li, Nari Im
Tags
Climate Change
CO2 emissions
Gross Primary Production
Ocean Circulation
Agricultural Policy
North Atlantic SST
AMOC

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