Reconciling East Asia's mid-Holocene temperature discrepancy through vegetation-climate feedback DOI Creative Commons
Jie Chen, Qiong Zhang,

Zhengyao Lu

et al.

Science Bulletin, Journal Year: 2024, Volume and Issue: 69(15), P. 2420 - 2429

Published: April 7, 2024

The term "Holocene temperature conundrum" refers to the inconsistencies between proxy-based reconstructions and transient model simulations, it challenges our understanding of global evolution during Holocene. Climate indicate a cooling trend following Holocene Thermal Maximum, while simulations consistent warming due ice-sheet retreat rising greenhouse gas concentrations. Various factors, such as seasonal biases overlooked feedback processes, have been proposed potential causes for this discrepancy. In study, we examined impact vegetation-climate on anomaly patterns in East Asia mid-Holocene (∼6 ka). By utilizing fully coupled Earth system EC-Earth performing with without dynamic vegetation, objective was isolate influence vegetation changes regional patterns. Our findings reveal that contributed across most Asia, resulting spatially diverse significantly improved model-data agreement. These results highlight crucial role addressing conundrum emphasize its importance simulating accurate climate scenarios.

Language: Английский

Holocene global mean surface temperature, a multi-method reconstruction approach DOI Creative Commons
Darrell S. Kaufman, Nicholas P. McKay, Cody Routson

et al.

Scientific Data, Journal Year: 2020, Volume and Issue: 7(1)

Published: June 30, 2020

Abstract An extensive new multi-proxy database of paleo-temperature time series (Temperature 12k) enables a more robust analysis global mean surface temperature (GMST) and associated uncertainties than was previously available. We applied five different statistical methods to reconstruct the GMST past 12,000 years (Holocene). Each method used approaches averaging globally distributed characterizing various sources uncertainty, including proxy temperature, chronology methodological choices. The results were aggregated generate multi-method ensemble plausible latitudinal-zone reconstructions with realistic range uncertainties. warmest 200-year-long interval took place around 6500 ago when 0.7 °C (0.3, 1.8) warmer 19 th Century (median, 5 , 95 percentiles). Following Holocene thermal maximum, cooled at an average rate −0.08 per 1000 (−0.24, −0.05). ensembles code them highlight utility Temperature 12k database, they are now available for future use by studies aimed understanding evolution Earth system.

Language: Английский

Citations

349
Seasonal origin of the thermal maxima at the Holocene and the last interglacial DOI
Samantha C. Bova, Yair Rosenthal, Zhengyu Liu

et al.

Nature, Journal Year: 2021, Volume and Issue: 589(7843), P. 548 - 553

Published: Jan. 27, 2021

Language: Английский

Citations

298
Pollen-based climate reconstruction techniques for late Quaternary studies DOI Creative Commons
Manuel Chevalier, Basil Davis, Oliver Heiri

et al.

Earth-Science Reviews, Journal Year: 2020, Volume and Issue: 210, P. 103384 - 103384

Published: Sept. 28, 2020

Fossil pollen records are well-established indicators of past vegetation changes. The prevalence across environmental settings including lakes, wetlands, and marine sediments, has made palynology one the most ubiquitous valuable tools for studying climatic change globally decades. A complementary research focus been development statistical techniques to derive quantitative estimates conditions from assemblages. This paper reviews commonly used their rationale seeks provide a resource facilitate inclusion in more palaeoclimatic research. To this end, we first address fundamental aspects fossil data that should be considered when undertaking pollen-based climate reconstructions. We then introduce range currently available, history development, situations which they can best employed. review literature on how define robust calibration datasets, produce high-quality reconstructions, evaluate suggest methods products could developed accessibility global usability. continue foster reconstruction methods, promote reporting standards. When established, such standards 1) enable broader application techniques, especially regions where underused, 2) evaluation reproduction individual structuring them evolving open-science era, optimising use as vital means study variability. also strongly encourage developers users palaeoclimate methodologies make associated programming code publicly will further help disseminate these interested communities.

Language: Английский

Citations

274
Framing, Context, and Methods DOI Creative Commons
Deliang Chen,

Maisa Rojas,

B. H. Samset

et al.

Cambridge University Press eBooks, Journal Year: 2023, Volume and Issue: unknown, P. 147 - 286

Published: June 29, 2023

A summary is not available for this content so a preview has been provided. As you have access to content, full PDF via the 'Save PDF' action button.

Language: Английский

Citations

254
Large-scale features and evaluation of the PMIP4-CMIP6 <i>midHolocene</i> simulations DOI Creative Commons

Chris Brierley,

Anni Zhao, Sandy P. Harrison

et al.

Climate of the past, Journal Year: 2020, Volume and Issue: 16(5), P. 1847 - 1872

Published: Oct. 1, 2020

Abstract. The mid-Holocene (6000 years ago) is a standard time period for the evaluation of simulated response global climate models using palaeoclimate reconstructions. latest simulations are entry card Palaeoclimate Model Intercomparison Project (PMIP4) component current phase Coupled (CMIP6) – hereafter referred to as PMIP4-CMIP6. Here we provide an initial analysis and results experiment mid-Holocene. We show that state-of-the-art produce changes broadly consistent with theory observations, including increased summer warming Northern Hemisphere associated shifts in tropical rainfall. Many features PMIP4-CMIP6 were present previous generation (PMIP3-CMIP5) simulations. ensemble has mean temperature change −0.3 K, which −0.2 K cooler than PMIP3-CMIP5 predominantly result prescription realistic greenhouse gas concentrations Biases magnitude sign regional responses identified PMIP3-CMIP5, such amplification northern African monsoon, precipitation over Europe, aridity mid-Eurasia, still Despite these issues, opportunity both quantitative derivation emergent constraints on hydrological cycle, feedback strength, potentially sensitivity.

Language: Английский

Citations

187
Using paleo-archives to safeguard biodiversity under climate change DOI
Damien A. Fordham, Stephen T. Jackson, Stuart C. Brown

et al.

Science, Journal Year: 2020, Volume and Issue: 369(6507)

Published: Aug. 28, 2020

Using the past to inform future The late Quaternary paleorecord, within ∼130,000 years, can help present-day management of Earth's ecosystems and biota under climate change. Fordham et al. review when where rapid transitions be found in paleoclimate record. They show how such events history shape our understanding consequences global warming, including rates biodiversity loss, changes ecosystem structure function, degradation goods services that these provide humanity. also highlight recent developments at intersection paleoecology, paleoclimatology, macroecology opportunities anticipate manage responses species changing climates Anthropocene. Science , this issue p. eabc5654

Language: Английский

Citations

185
Early Holocene weakening and mid- to late Holocene strengthening of the East Asian winter monsoon DOI Creative Commons
Shugang Kang,

Jinhua Du,

Ning Wang

et al.

Geology, Journal Year: 2020, Volume and Issue: 48(11), P. 1043 - 1047

Published: July 13, 2020

Abstract Sub-orbital-scale variations of the East Asian winter monsoon (EAWM) and its mechanisms during Holocene are controversial, partly due to lack high-quality records from Chinese loess. Here, we present high-resolution reconstruction EAWM intensity based on optically stimulated luminescence dating grain-size analysis three loess sections taken Loess Plateau. The showed a persistent weakening trend early (ca. 11.7–6.5 kyr B.P.) strengthening mid- late (since ca. 6.5 B.P.). We propose that this was caused by changes in high-latitude Northern Hemisphere ice volume middle- atmospheric temperatures, respectively. also observed an anti-correlation between summer monsoon. Our findings provide robust solution debate regarding contribute understanding potential future intensity.

Language: Английский

Citations

145
Revisiting the Holocene global temperature conundrum DOI
Darrell S. Kaufman, Ellie Broadman

Nature, Journal Year: 2023, Volume and Issue: 614(7948), P. 425 - 435

Published: Feb. 15, 2023

Language: Английский

Citations

131
The archaeology of climate change: The case for cultural diversity DOI Creative Commons
Ariane Burke, Matthew Peros, Colin D. Wren

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2021, Volume and Issue: 118(30)

Published: July 22, 2021

Anthropogenic climate change is currently driving environmental transformation on a scale and at pace that exceeds historical records. This represents an undeniably serious challenge to existing social, political, economic systems. Humans have successfully faced similar challenges in the past, however. The archaeological record Earth archives offer rare opportunities observe complex interaction between human systems under different regimes spatial temporal scales. archaeology of offers identify factors promoted resilience past apply knowledge gained present, contributing much-needed, long-term perspective research. One strengths cultural diversity it encompasses, which alternatives solutions proposed from within Western agro-industrial complex, might not be viable cross-culturally. While contemporary discourse focuses importance biodiversity, we highlight as source resilience.

Language: Английский

Citations

114
Northern Hemisphere vegetation change drives a Holocene thermal maximum DOI Creative Commons
Alexander J. Thompson, Jiang Zhu, Christopher J. Poulsen

et al.

Science Advances, Journal Year: 2022, Volume and Issue: 8(15)

Published: April 15, 2022

The Holocene thermal maximum, a period of global warmth evident in early to mid-Holocene proxy reconstructions, is controversial. Most model simulations the have not reproduced this warming, leading disagreement known as Temperature Conundrum. Pollen records document expansion vegetation and African Sahara Northern Hemisphere mid- high latitudes, which has been overlooked previous modeling studies. Here, we use time slice Community Earth System Model assess impact change on annual mean temperatures. Our indicate that 9000 6000 years ago warms Earth’s surface by ~0.8° 0.7°C, respectively, producing better match with proxy-based reconstructions. results suggest critical for temperature evolution highlight its role driving maximum.

Language: Английский

Citations

91