Rapid ice-age warming events amplified by strong vegetation-albedo feedback DOI Creative Commons
Mengmeng Liu, I. Colin Prentice, Laurie Menviel

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: March 27, 2024

Abstract The last glacial period was punctuated by >20 Dansgaard-Oeschger (D-O) cycles each manifested as a large, rapid (decadal-scale) warming in Greenland followed slower cooling. D-O events have been identified instances of global climate-tipping point being crossed repeatedly. mechanisms are not fully resolved. A role for the interaction ice-sheet dynamics with ocean circulation is widely accepted. Less attention has paid to land-surface changes, although both decreasing snow and increasing tree cover high latitudes could amplify warming. Here we use dataset pollen records spanning multiple during Marine Isotope Stage 3 reconstruct changes land temperature, vegetation height, combine these generated LOVECLIM climate model, using 3D-variational data assimilation technique estimate patterns change albedo temperature. We find large (1.94 ± 0.65 W m–2 K–1) positive feedback from combined effect snow, which about 40 % larger than pure snow-albedo feedback. This may be enough destabilized system, helping explain abruptness events.

Language: Английский

The 2024 state of the climate report: Perilous times on planet Earth DOI Creative Commons
William J. Ripple, Christopher Wolf,

Jillian W. Gregg

et al.

BioScience, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 8, 2024

Language: Английский

Citations

59
Microbes Saving Lives and Reducing Suffering DOI Creative Commons
Kenneth N. Timmis, Zeynep Ceren Karahan, Juan L. Ramos

et al.

Microbial Biotechnology, Journal Year: 2025, Volume and Issue: 18(1)

Published: Jan. 1, 2025

Language: Английский

Citations

4
Tipping point-induced abrupt shifts in East Asian hydroclimate since the Last Glacial Maximum DOI Creative Commons
Fuzhi Lu, Huayu Lu,

Yao Gu

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 8, 2025

Multiple tipping points in the Earth system could be triggered when global warming exceeds specific thresholds. However, degree of their impact on East Asian hydroclimate remains uncertain due to lack quantitative rainfall records. Here we present an ensemble reconstruction summer monsoon (EASM) since Last Glacial Maximum (LGM) using nine statistical and machine learning methods based multi-proxy records from a maar lake southern China. Our results define five EASM LGM, which are characterized by abrupt irreversible regime shifts with median amplitude 387 ± 73 mm (24 5 %). Combined multi-model simulations existing records, attribute these cascades Atlantic meridional overturning circulation (AMOC) Saharan vegetation. findings underscore nonlinear behavior its coupling other elements. The largely unknown. Here, is presented this identified.

Language: Английский

Citations

2
Monitoring the Multiple Stages of Climate Tipping Systems from Space: Do the GCOS Essential Climate Variables Meet the Needs? DOI Creative Commons
Sina Loriani, Annett Bartsch, Elisa Calamita

et al.

Surveys in Geophysics, Journal Year: 2025, Volume and Issue: 46(2), P. 327 - 374

Published: Feb. 18, 2025

Language: Английский

Citations

2
California’s Senate Bill 596: Spearheading the global transition to sustainable cement DOI Creative Commons
Kenneth C. Johnson

Next Sustainability, Journal Year: 2025, Volume and Issue: 6, P. 100106 - 100106

Published: Jan. 1, 2025

Language: Английский

Citations

1
Permafrost and Freshwater Systems in the Arctic as Tipping Elements of the Climate System DOI Creative Commons
Victor Brovkin, Annett Bartsch, Gustaf Hugelius

et al.

Surveys in Geophysics, Journal Year: 2025, Volume and Issue: 46(2), P. 303 - 326

Published: April 1, 2025

Language: Английский

Citations

1
Reflecting on the Science of Climate Tipping Points to Inform and Assist Policy Making and Address the Risks they Pose to Society DOI Creative Commons
Thomas F. Stocker, Richard Jones, Michaela I. Hegglin

et al.

Surveys in Geophysics, Journal Year: 2024, Volume and Issue: unknown

Published: June 4, 2024

Abstract There is a diverging perception of climate tipping points, abrupt changes and surprises in the scientific community public. While such dynamics have been observed past, e.g., frequent reductions Atlantic meridional overturning circulation during last ice age, or sheet collapses, points might also be possibility an anthropogenically perturbed climate. In this context, high impact—low likelihood events, both physical realm as well ecosystems, will potentially dangerous. Here we argue that formalized assessment state science needed order to establish consensus on issue reconcile views. This has approach taken by Intergovernmental Panel Climate Change (IPCC). Since 1990, IPCC consistently generated robust several complex issues, ranging from detection attribution change, global carbon budget sensitivity, projection extreme events their impact. Here, suggest conducted collaboratively Science-Policy Platform Biodiversity Ecosystem Services, would represent ambitious yet necessary goal accomplished within next decade.

Language: Английский

Citations

6
On Thin Ice: Solar Geoengineering to Manage Tipping Element Risks in the Cryosphere by 2040 DOI Creative Commons
Wake Smith, Madeline F. Bartels, Jasper G. Boers

et al.

Earth s Future, Journal Year: 2024, Volume and Issue: 12(8)

Published: Aug. 1, 2024

Abstract Tipping elements are features of the climate system that can display self‐reinforcing and non‐linear responses if pushed beyond a certain threshold (the “tipping point”). Models suggest we may surpass several these tipping points in next few decades, irrespective which emissions pathway humanity follows. Some reside Arctic Antarctic could potentially be avoided or arrested via stratospheric aerosol injection (SAI) program applied only at poles. This paper considers utility proactively developing capacity to respond emergent element threats poles as matter risk management. It then examines both air ground infrastructure would required operationalize such capability by 2040 finds this require funded launch decision financially credible actor roughly 2030.

Language: Английский

Citations

4
Dynamics of systems with varying number of particles: from Liouville equations to general master equations for open systems DOI Creative Commons
Mauricio J. del Razo, Luigi Delle Site

SciPost Physics, Journal Year: 2025, Volume and Issue: 18(1)

Published: Jan. 6, 2025

A varying number of particles is one the most relevant characteristics systems interest in nature and technology, ranging from exchange energy matter with surrounding environment to change particle through internal dynamics such as reactions. The physico-mathematical modeling these extremely challenging, major difficulty being time dependence degrees freedom additional constraint that increment or reduction species must not violate basic physical laws. Theoretical models, a case, represent key tool for design computational strategies numerical studies deliver trustful results. In this manuscript, we review complementary approaches inspired by rather different specific goals. As result analysis on underlying common structure propose unifying master equation general dynamical particles. This embeds all previous models can potentially model much larger range complex systems, molecular social agent-based dynamics.

Language: Английский

Citations

0
Long-term changes in the speed and direction of westerlies in the mid-latitudes of the Northern Hemisphere (MLNH) DOI
Hossein Asakereh, Arman Jahedi

Acta Geophysica, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 23, 2025

Language: Английский

Citations

0