Foraminiferal evidence of major environmental changes driven by the sun-climate coupling in the western Portuguese coast (14th century to present)

Moreno, João; Fatela, Francisco; Leorri, Eduardo; Moreno, Filipa; Gonçalves, Mário A.; Gómez-Navarro, Juan José; Araújo, M. Fátima; Freitas, Maria Conceição; Trigo, Ricardo M.; Blake, William H.

doi:10.1016/j.ecss.2018.11.030

Cited by 5 publications

(4 citation statements)

References 108 publications

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“…The solar 11‐year Schwabe cycle was identified in site 46 (Chen et al, ) and several other case studies from the region (Chen et al, ; Cini Castagnoli et al, ; Cini Castagnoli et al, ; Li et al, ). Other Mediterranean palaeotemperature studies have suggested centennial‐ and millennial‐scale sun‐climate coupling, partly in combination with the NAO (Desprat et al, ; Diodato & Bellocchi, ; Morellón et al, ; Morellón et al, ; Moreno et al, ; Nieto‐Moreno et al, ; Sánchez‐López et al, ; Versteegh et al, ).…”

Section: Discussionmentioning

confidence: 96%

The Medieval Climate Anomaly in the Mediterranean Region

Lüning¹,

Schulte

Garcés‐Pastor

et al. 2019

Paleoceanog and Paleoclimatol

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The Medieval Climate Anomaly (MCA) is a preindustrial phase of pronounced natural climate variability with a core period from 1000 to 1200 CE. The paper presents a synthesis that integrates palaeotemperature records from the Greater Mediterranean Region encompassing the past 1,500 years based on multiproxy data from 79 published land and marine sites. MCA warming dominated the Western Mediterranean (Iberia, NW Africa) as well as the northern land areas of the Central and Eastern Mediterranean region. MCA cooling prevailed in the Canary Current Upwelling System, southern Levant, and some sea areas of the Central and Eastern Mediterranean. Previous palaeoreconstructions suggest persistent positive Atlantic Multidecadal Oscillation (AMO+) and North Atlantic Oscillation (NAO+) conditions during the MCA, while the Little Ice Age was dominated by an AMO− and NAO− regime. During the past 150 years, AMO+ conditions are typically associated with warming episodes in the Mediterranean area. A similar relationship appears to have also been established during the MCA as the majority of all Mediterranean land sites experienced warm climate conditions. In contrast, the NAO typically leads to a characteristic west‐east temperature dipole pattern in the basin, as documented for the last decades. During NAO+ conditions the Western Mediterranean is generally warm (and dry), while large parts of the Central and Eastern Mediterranean are cold. Similar trends seem to have been developed during the MCA when the NAO+ regime led to consistent warming in the Western Mediterranean, while a significant number of sites with MCA cooling existed in the Central and Eastern Mediterranean.

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Section: Discussionmentioning

confidence: 96%

The Medieval Climate Anomaly in the Mediterranean Region

Lüning¹,

Schulte

Garcés‐Pastor

et al. 2019

Paleoceanog and Paleoclimatol

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“…Numerous publications demonstrate a transition period in Portugal after 1300, pointing to significant alluvial sediment budget on the coast synchronous to tidal marshes development, due to the enhancement of the runoff of rivers, suggesting a climatic change from dry to wetter conditions and a further increase of storm frequency (Moreno et al, 2019).…”

Section: Climate As a Trigger For Sand Drift?mentioning

confidence: 99%

“…Past weather reconstructions for Portugal report a remarkable cooling in the late seventeenth and in the beginning of the eighteenth century, particularly in winter and spring (Alcoforado et al, 2000). Very dry years : Lamb, 1965;Mann, 2002;Usoskin, et al, 2021;Moreno et al, 2019. MCA is the Medieval Climate Anomaly; LIA the Little Ice Age and CWP the Current Warmer Period.…”

Section: Climate As a Trigger For Sand Drift?mentioning

confidence: 99%

The Encroaching Dunes of the Portuguese Coast

Tudor

Ramos-Pereira

Freitas

2022

Journal for the History of Environment and Society

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“…AD 950–1250), and a drier/colder period (Little Ice Age, LIA, ca. AD 1400–1850) (Baker et al, 2015; Koutsodendris et al, 2017; Moreno et al, 2019). The DACP has been reported as a cold period with societal impacts (Helama et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

A Late Holocene climate reconstruction from the high-altitude Lake Gölcük sedimentary records, Isparta (SW Anatolia)

et al. 2023

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A high-resolution multiproxy lake sediment dataset, comprising lithology, radiography, μXRF elemental, magnetic susceptibility (MS), δ13C, and δ18O measurements since ca. AD 400 is presented in this study. Changes in lithology, radiography, magnetic susceptibility (MS), δ13C, and δ18O reflect wet/dry climate periods, whereas variability in log(Ca/K) can reflect warm/cold climate periods. Analyses of the multiproxy results allow the distinction of several climate periods, which may be associated with climatic phenomena such as changes in North Atlantic Oscillation (NAO) and/or solar activity. The influence of NAO−/NAO+ (negative/positive) is suggested to be related with the southward/northward displacement of the storm tracks resulting from the NAO−/NAO+ phases. For solar activity, the influence is explained through a direct increase in solar heating leading to calcite precipitation. The Dark Ages Cold Period (DACP, AD 450–750) reflects cold-dry climate conditions at this site, indicative of a positive North Atlantic Oscillation (NAO+) and low solar activity. The Medieval Climate Anomaly (MCA, AD 950–1250) exhibits wet-dry-wet and warm-cold-warm climate conditions. The wet/dry periods likely are associated with NAO−/NAO+, respectively, and the warm/cold period may reflect relatively high/low solar activity. The Little Ice Age (LIA, AD 1400–1850) is characterized by dry and cold climate conditions, suggesting the influence of NAO+ and low solar activity. Comparison of the results of this study with local and regional results suggests a generally similar climate pattern, which is indicative of similar climate mechanisms. The contradictions can be associated with age-related uncertainties, orographic differences, and/or other regional teleconnections.

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Foraminiferal evidence of major environmental changes driven by the sun-climate coupling in the western Portuguese coast (14th century to present)

Cited by 5 publications

References 108 publications

The Medieval Climate Anomaly in the Mediterranean Region

The Medieval Climate Anomaly in the Mediterranean Region

The Encroaching Dunes of the Portuguese Coast

A Late Holocene climate reconstruction from the high-altitude Lake Gölcük sedimentary records, Isparta (SW Anatolia)

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