Pulse-like carbon dioxide release to the atmosphere on centennial time scales has only been identified for the most recent glacial and deglacial periods and is thought to be absent during warmer climate conditions. Here, we present a high-resolution carbon dioxide record from 330,000 to 450,000 years before present, revealing pronounced carbon dioxide jumps (CDJ) under cold and warm climate conditions. CDJ come in two varieties that we attribute to invigoration or weakening of the Atlantic meridional overturning circulation (AMOC) and associated northward and southward shifts of the intertropical convergence zone, respectively. We find that CDJ are pervasive features of the carbon cycle that can occur during interglacial climate conditions if land ice masses are sufficiently extended to be able to disturb the AMOC by freshwater input.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1126/science.aay8178 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
SARS-CoV-2 transmission dynamics in Mozambique and Zimbabwe during the first 3 years of the pandemic.
R Soc Open Sci
January 2025
Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA.
The 2019 emergence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its rapid spread created a public health emergency of international concern. However, the impact of the pandemic in Sub-Saharan Africa, as documented in cases, hospitalizations and deaths, appears far lower than in the Americas, Europe and Asia. Characterization of the transmission dynamics is critical for understanding how SARS-CoV-2 spreads and the true scale of the pandemic.
View Article and Find Full Text PDFThe impact of arbuscular mycorrhizal colonization on flooding response of .
Front Plant Sci
January 2025
Department of General and Applied Botany, Institute of Biology, Leipzig University, Leipzig, Germany.
Climate change is expected to lead to an increase in precipitation and flooding. Consequently, plants that are adapted to dry conditions have to adjust to frequent flooding periods. In this study, we investigate the flooding response of , a Mediterranean plant adapted to warm and dry conditions.
View Article and Find Full Text PDFFrequency of Tommy John Surgery in NCAA Division I College Pitchers Versus Weather Conditions.
Orthop J Sports Med
January 2025
The University of Texas Medical Branch at Galveston, Galveston, Texas, USA.
Background: Ulnar collateral ligament reconstruction (UCLR) is a common elbow procedure in baseball pitchers. Previous studies of Major League Baseball pitchers identified the weather as a potential risk factor, as warmer climates enable more annual playing time and increase overuse injury risks.
Purpose: To determine whether weather conditions play a role in UCLR rates and timing for National Collegiate Athletic Association (NCAA) Division I (D1) collegiate pitchers in the United States.
Genotypic variability in stress responses of Sorghum bicolor under drought and salinity conditions.
Front Genet
January 2025
Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
Introduction: Sorghum bicolor: widely cultivated in Asia and Africa, faces increasing challenges from climate change, specifically from abiotic stresses like drought and salinity. This study evaluates how different sorghum genotypes respond to separate and combined stresses of drought and salinity.
Methods: Carried out with three replications using a randomized complete block design, the experiment measured biochemical and physiological parameters, including stomatal conductance, chlorophyll content, and antioxidant enzyme activities.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!