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  Subjects -> METEOROLOGY (Total: 106 journals)
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Climate of the Past (CP)
Journal Prestige (SJR): 1.981
Citation Impact (citeScore): 3
Number of Followers: 7  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1814-9324 - ISSN (Online) 1814-9332
Published by European Geosciences Union Homepage  [1 journal]
  • Patterns of Centennial-to-Millennial Holocene Climate Variation in the
           North American Mid-Latitudes

    • Abstract: Patterns of Centennial-to-Millennial Holocene Climate Variation in the North American Mid-Latitudes
      Bryan N. Shuman
      Clim. Past Discuss., https//doi.org/10.5194/cp-2022-89,2022
      Preprint under review for CP (discussion: open, 0 comments)
      A gap in understanding climate variation exists at centennial-to-millennial scales, particularly for warm climates. Such variations challenge detection. They exceed direct observation but are geologically short. Centennial-to-millennial variations that may have influenced North America were examined over the past 7000 yr. Significant patterns were detected from fossil pollen and sedimentary lake-level changes, indicating ecological, hydrological, and likely human significance.
      PubDate: Mon, 28 Nov 2022 23:25:59 +010
      DOI: 10.5194/cp-2022-892022

       
  • Internal climate variability and spatial temperature correlations during
           the past 2000 years

    • Abstract: Internal climate variability and spatial temperature correlations during the past 2000 years
      Pepijn Bakker, Hugues Goosse, and Didier M. Roche
      Clim. Past, 18, 2523–2544, https://doi.org/10.5194/cp-18-2523-2022, 2022
      Natural climate variability plays an important role in the discussion of past and future climate change. Here we study centennial temperature variability and the role of large-scale ocean circulation variability using different climate models, geological reconstructions and temperature observations. Unfortunately, uncertainties in models and geological reconstructions are such that more research is needed before we can describe the characteristics of natural centennial temperature variability.
      PubDate: Thu, 24 Nov 2022 08:25:10 +010
      DOI: 10.5194/cp-18-2523-2022 2022

       
  • The use of paleoclimate simulations to refine the environmental and
           chronological context of archaeological/paleontological sites

    • Abstract: The use of paleoclimate simulations to refine the environmental and chronological context of archaeological/paleontological sites
      Léa Terray, Emmanuelle Stoetzel, Eslem Ben Arous, Masa Kageyama, Raphaël Cornette, and Pascale Braconnot
      Clim. Past Discuss., https//doi.org/10.5194/cp-2022-81,2022
      Preprint under review for CP (discussion: open, 0 comments)
      The reconstruction of paleoenvironments has long been a subject of great interest, particularly to study the past biodiversity. Paleoenvironmental proxies often show inconsistencies and age estimations can vary depending on the method used. We show the potential of paleoclimate simulations to address those discrepancies, illustrating the strong potential of our cross-disciplinary consistency approach to refine the context of archaeo/paleontological sites.
      PubDate: Wed, 23 Nov 2022 08:25:10 +010
      DOI: 10.5194/cp-2022-812022

       
  • Accurately calibrated X-ray fluorescence core scanning (XRF-CS) record of
           Ti ∕ Al reveals Early Pleistocene aridity and humidity variability
           over North Africa and its close relationship to low-latitude insolation

    • Abstract: Accurately calibrated X-ray fluorescence core scanning (XRF-CS) record of Ti ∕ Al reveals Early Pleistocene aridity and humidity variability over North Africa and its close relationship to low-latitude insolation
      Rick Hennekam, Katharine M. Grant, Eelco J. Rohling, Rik Tjallingii, David Heslop, Andrew P. Roberts, Lucas J. Lourens, and Gert-Jan Reichart
      Clim. Past, 18, 2509–2521, https://doi.org/10.5194/cp-18-2509-2022, 2022
      The ratio of titanium to aluminum (Ti/Al) is an established way to reconstruct North African climate in eastern Mediterranean Sea sediments. We demonstrate here how to obtain reliable Ti/Al data using an efficient scanning method that allows rapid acquisition of long climate records at low expense. Using this method, we reconstruct a 3-million-year North African climate record. African environmental variability was paced predominantly by low-latitude insolation from 3–1.2 million years ago.
      PubDate: Tue, 22 Nov 2022 08:25:10 +010
      DOI: 10.5194/cp-18-2509-2022 2022

       
  • South Asian summer monsoon enhanced by the uplift of Iranian Plateau in
           Middle Miocene

    • Abstract: South Asian summer monsoon enhanced by the uplift of Iranian Plateau in Middle Miocene
      Meng Zuo, Yong Sun, Yan Zhao, Gilles Ramstein, Lin Ding, and Tianjun Zhou
      Clim. Past Discuss., https//doi.org/10.5194/cp-2022-76,2022
      Preprint under review for CP (discussion: open, 0 comments)
      Based on the coupled model simulations with realistic early to middle Miocene paleogeography, we reveal that the enhanced South Asian summer monsoon in Middle Miocene is mainly caused by the uplift of Iranian Plateau (IP), rather than the Himalayas. The elevated IP insulates the warm and moist airs in the south of the IP and produces a low-level cyclonic circulation, which leads to the convergence of the warm and moist air in the northwestern India and enhancing the monsoonal precipitation.
      PubDate: Fri, 18 Nov 2022 08:25:10 +010
      DOI: 10.5194/cp-2022-762022

       
  • Leeuwin Current dynamics over the last 60 kyr – relation to Australian
           ecosystem and Southern Ocean change

    • Abstract: Leeuwin Current dynamics over the last 60 kyr – relation to Australian ecosystem and Southern Ocean change
      Dirk Nürnberg, Akintunde Kayode, Karl J. F. Meier, and Cyrus Karas
      Clim. Past, 18, 2483–2507, https://doi.org/10.5194/cp-18-2483-2022, 2022
      The Leeuwin Current to the west of Australia steers the heat exchange between the tropical and the subantarctic ocean areas. Its prominent variability during the last glacial effectively shaped the Australian ecosystem and was closely related to the dynamics of the Antarctic Circumpolar Current. At ~ 43 ka BP, the rapidly weakening Leeuwin Current, the ecological response in Australia, and human interference likely caused the extinction of the exotic Australian megafauna.
      PubDate: Tue, 15 Nov 2022 18:24:12 +010
      DOI: 10.5194/cp-18-2483-2022 2022

       
  • Atlantic circulation changes across a stadial-interstadial transition

    • Abstract: Atlantic circulation changes across a stadial-interstadial transition
      Claire Waelbroeck, Jerry Tjiputra, Chuncheng Guo, Kerim H. Nisancioglu, Eystein Jansen, Natalia Vazquez Riveiros, Samuel Toucanne, Frédérique Eynaud, Linda Rossignol, Fabien Dewilde, Elodie Marchès, Susana Lebreiro, and Silvia Nave
      Clim. Past Discuss., https//doi.org/10.5194/cp-2022-83,2022
      Preprint under review for CP (discussion: open, 0 comments)
      The precise geometry of Atlantic circulation changes that accompanied rapid climate changes of the last glacial period is still unknown. Here we combine carbon isotopic records from 18 Atlantic sediment cores with numerical simulations performed by the Norwegian Earth System Model, in order to interpret the observed isotopic changes across a cold to warm transition. Our results show that the replacement of southern-sourced by northern-sourced water plays a dominant role below ~3000 m depth.
      PubDate: Tue, 15 Nov 2022 18:24:12 +010
      DOI: 10.5194/cp-2022-832022

       
  • A Bayesian approach to historical climatology for the Burgundian Low
           Countries in the 15th century

    • Abstract: A Bayesian approach to historical climatology for the Burgundian Low Countries in the 15th century
      Chantal Camenisch, Fernando Jaume-Santero, Sam White, Qing Pei, Ralf Hand, Christian Rohr, and Stefan Brönnimann
      Clim. Past, 18, 2449–2462, https://doi.org/10.5194/cp-18-2449-2022, 2022
      We present a novel approach to assimilate climate information contained in chronicles and annals from the 15th century to generate climate reconstructions of the Burgundian Low Countries, taking into account uncertainties associated with the descriptions of narrative sources. Our study aims to be a first step towards a more quantitative use of available information contained in historical texts, showing how Bayesian inference can help the climate community with this endeavor.
      PubDate: Wed, 09 Nov 2022 19:47:19 +010
      DOI: 10.5194/cp-18-2449-2022 2022

       
  • Wet season rainfall characteristics and temporal changes for Cape Town,
           South Africa, 1841–2018

    • Abstract: Wet season rainfall characteristics and temporal changes for Cape Town, South Africa, 1841–2018
      Nothabo Elizabeth Ndebele, Stefan Grab, and Herbert Hove
      Clim. Past, 18, 2463–2482, https://doi.org/10.5194/cp-18-2463-2022, 2022
      An investigation of the wet season characteristics including wet day frequencies, wet–dry spells, and season onset, end and length is done for Cape Town, South Africa. The temporal changes since 1841 in these characteristics indicate an increased incidence of shorter wet seasons and long dry spells in the most recent 3 decades compared to previous years. There is evidence of some associations between solar cycles and the Southern Oscillation index cycles with the wet season characteristics.
      PubDate: Wed, 09 Nov 2022 19:47:19 +010
      DOI: 10.5194/cp-18-2463-2022 2022

       
  • The ST22 chronology for the Skytrain Ice Rise ice core – part 2: an age
           model to the last interglacial and disturbed deep stratigraphy

    • Abstract: The ST22 chronology for the Skytrain Ice Rise ice core – part 2: an age model to the last interglacial and disturbed deep stratigraphy
      Robert Mulvaney, Eric William Wolff, Mackenzie Grieman, Helene Hoffmann, Jack Humby, Christoph Nehrbass-Ahles, Rachael Rhodes, Isobel Rowell, Frédéric Parrenin, Loïc Schmidely, Hubertus Fischer, Thomas Stocker, Marcus Christl, Raimund Muscheler, Amaelle Landais, and Frédéric Prié
      Clim. Past Discuss., https//doi.org/10.5194/cp-2022-84,2022
      Preprint under review for CP (discussion: open, 0 comments)
      We present an age scale for a new ice core drilled at Skytrain Ice Rise, an ice rise facing the Ronne Ice Shelf in Antarctica. Various measurements in the ice and air phases are used to match the ice core to other Antarctic cores that have already been dated. The 651 m ice core includes ice that is confidently dated to the last interglacial, 126,000 years ago. Older ice is found deeper down, but there are flow disturbances in the deeper ice.
      PubDate: Mon, 07 Nov 2022 19:47:19 +010
      DOI: 10.5194/cp-2022-842022

       
  • A comparison of pre-Millennium eruption (946 AD) and modern temperatures
           from tree rings in the Changbai Mountain, northeast Asia

    • Abstract: A comparison of pre-Millennium eruption (946 AD) and modern temperatures from tree rings in the Changbai Mountain, northeast Asia
      Haibo Du, Michael C. Stambaugh, J. Julio Camarero, Mai-He Li, Dapao Yu, Shengwei Zong, Hong S. He, and Zhengfang Wu
      Clim. Past Discuss., https//doi.org/10.5194/cp-2022-51,2022
      Preprint under review for CP (discussion: open, 0 comments)
      We reconstruct, for the first time, high-resolution temperatures prior to the Millennium eruption (946 AD) using a unique tree-ring proxy dataset in Changbai Mt., and compare them with modern temperatures. The temperatures during the last one and half centuries have stronger fluctuations, more frequent abruptions, and a weaker periodicity of temperature variance compared to the pre-Millennium temperatures. These recent changes correspond to long-term anthropogenic influences on regional climate.
      PubDate: Tue, 01 Nov 2022 13:23:14 +010
      DOI: 10.5194/cp-2022-512022

       
  • Dynamics of the Great Oxidation Event from a 3D
           photochemical–climate model

    • Abstract: Dynamics of the Great Oxidation Event from a 3D photochemical–climate model
      Adam Yassin Jaziri, Benjamin Charnay, Franck Selsis, Jérémy Leconte, and Franck Lefèvre
      Clim. Past, 18, 2421–2447, https://doi.org/10.5194/cp-18-2421-2022, 2022
      In the context of understanding the 3D photochemical effect on the Earth's oxygenation that happened around 2.4 Ga, we developed a 3D photochemical–climate model to investigate the possible impact of atmospheric circulation and the coupling between the climate and the dynamics of oxidation. We show that the diurnal, seasonal and transport variations do not bring significant changes compared to 1D models. Nevertheless, we highlight a temperature dependence for atmospheric photochemical losses.
      PubDate: Tue, 25 Oct 2022 20:10:32 +020
      DOI: 10.5194/cp-18-2421-2022 2022

       
  • Mid-Holocene climate of the Tibetan Plateau and hydroclimate in three
           major river basins based on high-resolution regional climate simulations

    • Abstract: Mid-Holocene climate of the Tibetan Plateau and hydroclimate in three major river basins based on high-resolution regional climate simulations
      Yiling Huo, William Richard Peltier, and Deepak Chandan
      Clim. Past, 18, 2401–2420, https://doi.org/10.5194/cp-18-2401-2022, 2022
      Understanding the hydrological changes on the Tibetan Plateau (TP) during the mid-Holocene (MH; a period with warmer summers than today) will help us understand expected future changes. This study analyses the hydroclimates over the headwater regions of three major rivers originating on the TP using dynamically downscaled climate simulations. Model–data comparisons show that the dynamic downscaling significantly improves both the present-day and MH regional climate simulations of the TP.
      PubDate: Tue, 25 Oct 2022 20:10:32 +020
      DOI: 10.5194/cp-18-2401-2022 2022

       
  • Pre-industrial temperature variability on the Swiss Plateau derived from
           the instrumental daily series of Bern and Zurich

    • Abstract: Pre-industrial temperature variability on the Swiss Plateau derived from the instrumental daily series of Bern and Zurich
      Yuri Brugnara, Chantal Hari, Lucas Pfister, Veronika Valler, and Stefan Brönnimann
      Clim. Past, 18, 2357–2379, https://doi.org/10.5194/cp-18-2357-2022, 2022
      We digitized dozens of weather journals containing temperature measurements from in and around Bern and Zurich. They cover over a century before the creation of a national weather service in Switzerland. With these data we could create daily temperature series for the two cities that span the last 265 years. We found that the pre-industrial climate on the Swiss Plateau was colder than suggested by previously available instrumental data sets and about 2.5 °C colder than the present-day climate.
      PubDate: Tue, 25 Oct 2022 20:10:32 +020
      DOI: 10.5194/cp-18-2357-2022 2022

       
  • Palynological evidence reveals an arid early Holocene for the northeast
           Tibetan Plateau

    • Abstract: Palynological evidence reveals an arid early Holocene for the northeast Tibetan Plateau
      Nannan Wang, Lina Liu, Xiaohuan Hou, Yanrong Zhang, Haicheng Wei, and Xianyong Cao
      Clim. Past, 18, 2381–2399, https://doi.org/10.5194/cp-18-2381-2022, 2022
      We reconstructed the vegetation and climate change since the last 14.2 ka BP from a fossil pollen record together with multiple proxies (grain size, contents of total organic carbon and total nitrogen) on the northeast Tibetan Plateau. The results reveal that an arid climate occurs in the early Holocene and the vegetation could be disturbed by human activities to some extent after ca. 0.24 ka BP (1710 CE).
      PubDate: Tue, 25 Oct 2022 20:10:32 +020
      DOI: 10.5194/cp-18-2381-2022 2022

       
  • Is it possible to estimate aerosol optical depth from historic colour
           paintings'

    • Abstract: Is it possible to estimate aerosol optical depth from historic colour paintings'
      Christian von Savigny, Anna Lange, Anne Hemkendreis, Christoph G. Hoffmann, and Alexei Rozanov
      Clim. Past, 18, 2345–2356, https://doi.org/10.5194/cp-18-2345-2022, 2022
      This study investigates the possibility of inferring information on aerosol optical depth from photographs of historic paintings. The idea – which has been applied in previous studies – is very interesting because it would provide an archive of the atmospheric aerosol loading covering many centuries. We show that twilight colours depend not only on the aerosol optical thickness, but also on several other parameters, making a quantitative estimate of aerosol optical depth very difficult.
      PubDate: Mon, 24 Oct 2022 22:35:32 +020
      DOI: 10.5194/cp-18-2345-2022 2022

       
  • The 8.2 ka event in northern Spain: timing, structure and climatic
           impact from a multi-proxy speleothem record

    • Abstract: The 8.2 ka event in northern Spain: timing, structure and climatic impact from a multi-proxy speleothem record
      Hege Kilhavn, Isabelle Couchoud, Russell N. Drysdale, Carlos Rossi, John Hellstrom, Fabien Arnaud, and Henri Wong
      Clim. Past, 18, 2321–2344, https://doi.org/10.5194/cp-18-2321-2022, 2022
      The analysis of stable carbon and oxygen isotopic ratios, trace element ratios, and growth rate from a Spanish speleothem provides quantitative information on past hydrological conditions during the early Holocene in south-western Europe. Our data show that the cave site experienced increased effective recharge during the 8.2 ka event. Additionally, the oxygen isotopes indicate a change in the isotopic composition of the moisture source, associated with the meltwater flux to the North Atlantic.
      PubDate: Wed, 19 Oct 2022 22:35:32 +020
      DOI: 10.5194/cp-18-2321-2022 2022

       
  • Comparison of the green-to-desert Sahara transitions between the Holocene
           and the last interglacial

    • Abstract: Comparison of the green-to-desert Sahara transitions between the Holocene and the last interglacial
      Huan Li, Hans Renssen, and Didier M. Roche
      Clim. Past, 18, 2303–2319, https://doi.org/10.5194/cp-18-2303-2022, 2022
      In past warm periods, the Sahara region was covered by vegetation. In this paper we study transitions from this green state to the desert state we find today. For this purpose, we have used a global climate model coupled to a vegetation model to perform transient simulations. We analyzed the model results to assess the effect of vegetation shifts on the abruptness of the transition. We find that the vegetation feedback was more efficient during the last interglacial than during the Holocene.
      PubDate: Tue, 18 Oct 2022 21:33:34 +020
      DOI: 10.5194/cp-18-2303-2022 2022

       
  • Sub-millennial climate variability from high-resolution water isotopes in
           the EPICA Dome C ice core

    • Abstract: Sub-millennial climate variability from high-resolution water isotopes in the EPICA Dome C ice core
      Antoine Grisart, Mathieu Casado, Vasileios Gkinis, Bo Vinther, Philippe Naveau, Mathieu Vrac, Thomas Laepple, Bénédicte Minster, Frederic Prié, Barbara Stenni, Elise Fourré, Hans Christian Steen-Larsen, Jean Jouzel, Martin Werner, Katy Pol, Valérie Masson-Delmotte, Maria Hoerhold, Trevor Popp, and Amaelle Landais
      Clim. Past, 18, 2289–2301, https://doi.org/10.5194/cp-18-2289-2022, 2022
      This paper presents a compilation of high-resolution (11 cm) water isotopic records, including published and new measurements, for the last 800 000 years from the EPICA Dome C ice core, Antarctica. Using this new combined water isotopes (δ18O and δD) dataset, we study the variability and possible influence of diffusion at the multi-decadal to multi-centennial scale. We observe a stronger variability at the onset of the interglacial interval corresponding to a warm period.
      PubDate: Mon, 17 Oct 2022 21:33:34 +020
      DOI: 10.5194/cp-18-2289-2022 2022

       
  • Atmospheric methane since the LGM was driven by wetland sources

    • Abstract: Atmospheric methane since the LGM was driven by wetland sources
      Thomas Kleinen, Sergey Gromov, Benedikt Steil, and Victor Brovkin
      Clim. Past Discuss., https//doi.org/10.5194/cp-2022-80,2022
      Preprint under review for CP (discussion: open, 0 comments)
      We have modelled atmospheric methane continuously from the last glacial maximum to the present, using a state-of-the-art Earth System Model. Our model results compare well with reconstructions from ice cores and improve our understanding of a very intriguing period of Earth System history, the deglaciation, when atmospheric methane changed quickly and strongly.
      PubDate: Mon, 17 Oct 2022 21:33:34 +020
      DOI: 10.5194/cp-2022-802022

       
 
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