Science topic

Paleoclimatology - Science topic

Paleoclimatology (palaeoclimatology) is the study of changes in climate taken on the scale of the entire history of Earth.
Filters
All publications are displayed by default. Use this filter to view only publications with full-texts.
Publications related to Paleoclimatology (3,965)
Sorted by most recent
Article
Full-text available
Quantitative relationships between mire plant assemblages and environmental variables have been investigated widely in Europe and North America, but hitherto insufficiently addressed in the East Asian monsoon region. In this study, the plant assemblages of 274 plots along hydrological gradients in five peatlands from the Changbai Mountains region,...
Article
Full-text available
Latest climate models project conditions for the end of this century that are generally outside of the human experience. These future conditions affect the resilience and sustainability of ecosystems, alter biogeographic zones, and impact biodiversity. Deep-time records of paleoclimate provide insight into the climate system over millions of years...
Article
Full-text available
The globalizing connections that defined the European Bronze Age in the second millennium BC either ended or abruptly changed in the decades around 1200 BC. The impact of climate change at 3.2 ka on such social changes has been debated for the eastern Mediterranean. This paper extends this enquiry of shifting human–climate relationships during the...
Article
Full-text available
Biology, geology, and paleoclimatology studies of coral reefs often rely on annual rates of corallite extension determined from cores of skeletal material recovered from scleractinian corals. To examine how corallite orientation within such cores may affect measured extension rates, we used high-resolution X-ray computed axial tomography (CT) to im...
Book
Full-text available
This book provides an overview of lakes in Mongolia from scientific, economic and scenic points of view, presenting lake area changes, their sedimentological and geochemical characteristics, valuable economic and geoheritage resources and paleoclimate change reconstruction. The book emphasizes internationally well-known lakes of Mongolia, but it al...
Article
Full-text available
Paleocene−Eocene hyperthermal events are a current research focus in the fields of sedimentology and paleoclimatology. The Fushun Basin in northeast China contains continuous continental Eocene fine-grained rocks, and a series of Eocene hyperthermal events in the Fushun Basin have been identified. Because of the high cost of high-precision isotope...
Article
Full-text available
North Africa features some of the most frequently burnt biomes on Earth, including the semi-arid grasslands of the Sahel and wetter savannas immediately to the south. Natural fires are fuelled by rapid biomass production during the wet season, its desiccation during the dry season and ignition by frequent dry lightning strikes. Today, fire activity...
Article
Full-text available
Coral geochemical tracers have been used in studies of the paleoclimatology and paleoceanography of the tropics and subtropics. We measured Sr/Ca and oxygen isotope ratios (δ18O) in a coral sample collected from the southern part of Lombok Strait, a significant outlet of the Indonesian Throughflow (ITF) to the Indian Ocean, to reconstruct the histo...
Article
Full-text available
Biota are found in glaciers, ice sheets and permafrost. Ice bound microorganisms evolve in a complex mobile environment facilitated or hindered by a range of bulk and surface interactions. When a particle is embedded in a host solid near its bulk melting temperature, a melted film forms at the surface of the particle in a process known as interfaci...
Article
Full-text available
The Paleocene‐Eocene Thermal Maximum (PETM) and the lower Chron 29n hyperthermal event were recently proposed to have been triggered by the meteorite impacts that formed the Marquez Dome (Texas, USA; 58.3 ± 3.1 Ma) and Boltysh (Ukraine; 65.39 ± 0.14 Ma) craters, respectively. We use shock physics hydrocode simulations and radiative forcing calculat...
Article
Full-text available
Through a unified mathematical framework, the stochastic behavior of three celebrated low-order lumped models, previously proposed for paleoclimate simulations, is considered. Due to the coherence resonance mechanism, the feedbacks between noise and the dynamical system reproduce the hallmark of the Pleistocene climate, i.e. the 100 ky pulsation, i...
Article
Full-text available
Mountain regions at high altitudes show deeply incised glacial valleys that coexist with a high-standing low-relief landscape, whose origin is largely debated. Whether the plateaus contributed to sediment production during the late Cenozoic is a currently debated issue in glacial geomorphology and paleoclimatology. In this study, we used detrital a...
Conference Paper
Full-text available
In the Jakupica Mt. (North Macedonia, Central Balkan Peninsula;~41.7°N,~21.4 E; maximum elevation: 2540 m asl) a large plateau glacier was reconstructed. The lowest mapped moraines in the northeastern valleys are at elevations of 1490-1720 m asl and suggest the former existence of glacier tongues of~3 km length. The maximum ice extent and five degl...
Book
Full-text available
About this book: This Open Access volume highlights how tree ring stable isotopes have been used to address a range of environmental issues from paleoclimatology to forest management, and anthropogenic impacts on forest growth. It will further evaluate weaknesses and strengths of isotope applications in tree rings. In contrast to older tree ring s...
Article
Full-text available
Space-for-time substitution means the use of modern patterns and phenomena observed in spatial gradients to understand and model the same patterns and processes in retrospective and prospective temporal gradients that are currently not observable. It is believed that the statistical relationship between environmental factors and the response of eco...
Article
Full-text available
Long-term socio-cultural change is a non-linear process involving demography, economy, culture, social organizations, symbols and ideas. It is generally marked by succession of social formations with different organizational requirements and "worldviews". The concept of emergent complexity used in this paper thus refers to the punctuated shift that...
Poster
Full-text available
This poster presents the results of our study „Ecology of testate amoebae along an environmental gradient from bogs to calcareous fens in East-Central Europe: development of transfer functions for palaeoenvironmental reconstructions“ published in Palaeogeography, Palaeoclimatology, Palaeoecology – issue September 2022. DOI of the paper is 10.1016/j...
Article
Full-text available
Tree-ring records constitute excellent high-resolution data and provide valuable information for climate science and paleoclimatology. Tree-ring reconstructions of past temperature variations agree to show evidence for annual-to-centennial anomalies in past climate and place the industrial-era warming in the context of the late Holocene climate pat...
Poster
Full-text available
Bivalve shells are accretionary biogenic carbonates that yield a record of the organisms’ life history, also with respect to the physiological response to the ambient environmental conditions. This is reflected by variations in the shells’ growth bands, their chemical composition, and morphological features, making them useful tools in paleobiology...
Article
Full-text available
During the Pleistocene intense climatic changes occurred corresponding with the alternation of inter-glacial and glacial periods. By means of stable isotope analysis on fossil mammals, this research allows the assessment of the palaeoecological and palaeoclimatic conditions, including the possible scenarios for the atmospheric circulation pattern d...
Article
Full-text available
Selected Jurassic-Cretaceous bituminous coal seams in the Crowsnest coalfield, Southeast British Columbia, Canada were investigated, as a case study, for comparing their quality and mineral geochemistry, as a function of their Paleo-depositional environments. Twenty-two channel coal samples were collected from the base (S10) coal seam and the top (...
Preprint
Full-text available
John Hardcastle was a significant pioneer in the field of palaeoclimatology; some claim that he invented loess stratigraphy. He was born in Wakefield in 1847 and went to New Zealand in 1858; some data about his early life is emerging.
Preprint
Full-text available
Stable water isotopes are natural tracers in the hydrological cycle and have been applied in hydrology, atmospheric science, ecology, and paleoclimatology. However, the factors controlling the isotopic distribution, both at spatial and temporal scales, are debated in East Asia. For the first time, we made large scale (order 10000 km) continuous obs...
Article
Full-text available
Tree-ring width is one of the most widely used proxy in paleoclimatological studies. Due to various environmental and biological processes, however, the associated reconstructions often suffer from overestimated low-frequency variability. In this study, a new correction approach is proposed using fractional integral techniques that corrects for the...
Article
Full-text available
Determining what caused the global Last Glaciation and last glacial termination, despite opposing orbital summer insolation signatures between the polar hemispheres, remains a puzzle of paleoclimatology. This problem can be addressed by comparing chronologies of glaciation from different latitudes and different climatic regimes in both hemispheres....
Article
Full-text available
Homotherium is one of the sabre-toothed felid genera with a more extensive overlap in space and time with species of our own genus Homo, who must have been familiar with the animal, but now we only have its fossil remains to infer its life appearance. A revised reconstruction of the soft tissue and life appearance of Homotherium latidens is propose...
Preprint
Full-text available
It is very clear that the climate system of planet Earth is oriented towards important changes with sensitive effects on environmental conditions, and on ecological systems. Visible effects resulting from long-term recordings of parameters such as temperature, wind direction, humidity and thermal radiation are also remarkable in terms of environmen...
Article
Full-text available
Increasing the taxonomic resolution of fossil pollen identification and establishing the kinship and similarity among phylogenetically related plant groups are inevitable for advancing the Quaternary palaeoecological, palaeoclimatological and palaeoenvironmental research. We, in the present study, examined and determined the pollen morphological ch...
Article
Full-text available
Three multi-proxy reconstructions of temperature in the Southern Hemisphere, were analyzed over the last millennium. Fourier and wavelet analysis showed that century-scale (55–120 years) and bicentennial (ca 250 years) variability is present in this series. That means that the climate of the Southern Hemisphere has periodicities similar to the sola...
Preprint
Full-text available
Bacterial membranes are composed of fatty acids ester-linked to glycerol-3-phosphate, while archaea possess membranes made of isoprenoid chains ether-linked to glycerol-1-phosphate. Many archaeal species organize their membrane as a monolayer of membrane-spanning lipids (MSLs). Exceptions to this ‘lipid divide’ are the production by some bacterial...
Article
Full-text available
Statistical climate reconstruction techniques are fundamental tools to study past climate variability from fossil proxy data. In particular, the methods based on probability density functions (or PDFs) can be used in various environments and with different climate proxies because they rely on elementary calibration data (i.e. modern geolocalised pr...
Article
Full-text available
The importance of climate change, specifically drought, across the Maya region in the northern Neotropics, remains a topic of lively debate. Part of this discussion hinges on the coherency of response to climatic variability across different archives and proxies. In this paper we present a 6600-year palaeolimnological record from Yaal Chac, a carbo...
Article
Full-text available
The colonization of Mauritius exemplifies the role played by humans in altering the ecosystems of remote oceanic islands, with the island famously being home to the iconic symbol of extinction, the dodo. Only inhabited for about 380 years, it now has the highest population density of any African nation; despite scant natural resources, it also ha...
Preprint
Full-text available
Biota are found in glaciers, ice sheets and permafrost. Ice bound micro-organisms evolve in a complex mobile environment facilitated or hindered by a range of bulk and surface interactions. When a particle is embedded in a host solid near its bulk melting temperature, a melted film forms at the surface of the particle in a process known as interfac...
Article
Full-text available
Mostly concurring with arid and semi-arid regions, closed basins are faced with water scarcity, prominent imbalance between water resource supply and demand, and ecological degradation. Spatial-temporal patterns of water resource change in closed basins have received increasing attention in recent years, but it is still unclear whether there is a c...
Article
Full-text available
Lake Magadi, East African Rift Valley, is a hyperalkaline and saline soda lake highly enriched in Na+, K+, CO32–, Cl–, HCO3–, and SiO2 and depleted in Ca2+ and Mg2+, where thick evaporite deposits and siliceous sediments have been forming for 100 000 years. The hydrogeochemistry and the evaporite deposits of soda lakes are subjects of growing inter...
Article
Full-text available
Global mean annual temperature has increased by more than 1 °C during the past 150 years, as documented by thermometer measurements. Such observational data are, unfortunately, not available for the pre-industrial period of the Common Era (CE), for which the climate development is reconstructed using various types of palaeoclimatological proxies. I...
Article
Full-text available
Fragestellung: „Die Erde drehte sich am Ende der Zeit der Dinosaurier schneller als heute: 372 Mal im Jahr verglichen mit derzeit 365 Mal – nach einer neuen Studie über fossile Weichtierschalen der späten Kreide. Dies bedeutet, dass ein Tag nur 23 und eine halbe Stunde dauerte (…).“ So beginnt die Pressemitteilung der American Geophysical Union (A...
Article
Full-text available
Xiao et al. (2021) propose a climatostratigraphy of the Arctic Ocean built from a Mn-based cyclostratigraphy of deep sediments tuned to stack marine isotope stratigraphy that was proposed by Jakobsson and others in 2000. This cyclostratigraphy led to infer relatively high sedimentation rates in the central Arctic Ocean during the last glacial/inter...
Article
Full-text available
Two usages of ‘climate sensitivity’ co-exist: one climatological and one ecological. The earlier climatological usage quantifies the sensitivity of global mean surface temperature to atmospheric CO2, with formal variants differing by timescale and processes. The ecological usage, renamed here as ecoclimate sensitivity, is defined as a change in an...
Article
Full-text available
Deception Island (South Shetland Islands) is one of the most active volcanoes in Antarctica, with more than 20 explosive eruptive events registered over the past few centuries. Recent eruptions (1967, 1969, and 1970) and volcanic unrest episodes (1992, 1999, and 2014–2015) demonstrate that volcanic activity will likely occur in the future. Despite...
Article
Full-text available
Global climate change is attracting widespread scientific, political, and public attention owing to the involvement of international initiatives such as the Paris Agreement and the Intergovernmental Panel on Climate Change. We present a large-scale bibliometric analysis based on approximately 120,000 climate change publications between 2001 and 201...
Article
Full-text available
Pre‐Pleistocene age models used in paleoceanography and paleoclimatology often rely on the imprint of astronomically calculated cycles of eccentricity and other solar system frequencies in sedimentary records (e.g., 405, 173, and ∼100 kyr). However, use of obliquity and precession cycles (at present ∼41 and ∼20 kyr) remains challenging for these pe...
Article
Full-text available
Volcanic fallout in polar ice sheets provides important opportunities to date and correlate ice-core records as well as to investigate the environmental impacts of eruptions. Only the geochemical characterization of volcanic ash (tephra) embedded in the ice strata can confirm the source of the eruption, however, and is a requisite if historical eru...
Article
Full-text available
ICAUC_ES Conference Proceeding volume contains the novel contributions that were reviewed and presented through the first version of the 2nd International Conference of Al-Esraa University College, where the conference covers 4 tracks which includes: (Track 1: Energy, Renewable Energy, Environmental Sciences, Environmental Engineering, Green Energy...
Article
Full-text available
Plain Language Summary Fossilized rodent middens are able to preserve plant remains for millennia, representing glimpses of ancient vegetation and climates. Pollen recovered from 31 fossil middens in the Atacama Desert in northern Chile allowed us to reconstruct vegetation and rainfall changes over the most recent millennium. Upslope shifts of low...
Article
Full-text available
The detection of periodic fluctuations is important in the quest for a deeper understanding of the drivers of past climates in the interests of being better able to understand the climate changes which are likely in the decades to come. Paleoclimatological information derived from natural archives is typically accompanied by chronological uncertain...
Preprint
Full-text available
The continuous development of new proxies as well as a refinement of existing tools are key to advances in paleoclimate research and improvements in the accuracy of existing climate reconstructions. Herein, we build on recent methodological progress in dendroanatomy – the analyses of wood anatomical parameters in dated tree rings – and introduce th...
Article
Full-text available
The Meuse and its tributary valleys contain numerous Late Pleistocene cave sites that have yielded one of the largest collections of Neanderthal and Mousterian lithic industries in Europe. Today, it is an important north–south migratory corridor for flora and fauna, generating rich biotopes. The Quaternary collections of the Royal Belgian Institute...
Chapter
Full-text available
The causes and consequences of the episodic iceberg-discharge events from the Hudson Strait Ice Stream of the Laurentide Ice Sheet, or Heinrich events (HE), are one of the most explored topics in Pleistocene palaeoclimatology. In this chapter, we summarise three decades of intense research while introducing recent results from both the European and...
Article
Full-text available
Plain Language Summary Paleoceanography and Paleoclimatology seeks to reveal past changes in the oceans and the climate, to help us better understand how Earth systems work. Traditionally, it has a strong focus on international networks and cooperation and we have accomplished many international projects. However, we are still facing some major cha...
Article
Full-text available
This paper presents a new annually laminated record (varves) from Lake Walker, Québec North Shore (eastern Canada) spanning the period from ~ 3230 to 2320 ± 20 cal BP. A ~ 3.5-m-long composite sequence was established with the best regular and continuous laminated intervals using computed tomography and high-resolution photographs. The varve chrono...
Article
Full-text available
Only a small area of the Australian mainland was glaciated during the Pleistocene, whereas periglacial deposits are far more common, indicating that cold environments were extensive and a major influence on landscape evolution. Here we identify representative low-elevation examples of scree slopes and frost action, together with fans and valley fil...
Article
Full-text available
Hyperarid coasts develop under relatively high air humidity and abundant sea salt aerosols, resulting in physical and chemical weathering processes that distinctly differ from those present in inland deserts. However, neither the geomorphic effects of the weathering processes nor the timescales on which they alter depositional surfaces are sufficie...
Article
Full-text available
As previously in astrophysics, the nature and features of the metallic state have never been updated in earth physics. Especially, the unprecedented consideration of an axifugal force on free electrons is able to explain the direct generation of a magnetic field in any large spinning sphere of solid or liquid metal, through the generation of inerti...
Preprint
Full-text available
The integration of archives of society with archives of nature has helped scholars to date extreme events precisely. This approach has led to collaboration between the natural sciences and the humanities. While it has helped to highlight the dimensions of nature-induced disasters and their societal consequences, it has often led to rather monocausa...
Article
Full-text available
Both dendrochronology and radiocarbon ( ¹⁴ C) dating have their roots back in the early to mid-1900s. Although they were independently developed, they began to intertwine in the 1950s when the founder of dendrochronology, A. E. Douglass, provided dated wood samples for Willard Libby to test his emerging ¹⁴ C methods. Since this early connection, ab...
Preprint
Full-text available
Statistical climate reconstruction techniques are practical tools to study past climate variability from fossil proxy data. In particular, the methods based on probability density functions (PDFs) are powerful at producing robust results from various environments and proxies. However, accessing and curating the necessary calibration data, as well a...
Article
Full-text available
The nine currently recognized species of moa (Order – Dinornithiformes; Bonaparte 1853) suffered extinction soon after New Zealand was settled by humans. They were the result of an evolutionary radiation that produced a unique guild of birds – giant, and totally wingless species that evolved in the absence of non-volant mammals. Recent advances in...
Article
Full-text available
Diatoms are the most abundant microscopic unicellular protists in natural lotic ecosystems. They are the major component of the producer community in aquatic ecosystems that also play important roles in biostratigraphy, paleoclimatology and overall ecosystem functioning. In recent times as ultrastructural details of diatom frustule has been establi...