Climate change on the Yucatan Peninsula during the Little Ice Age

Hodell, David A; Brenner, Mark; Curtis, Jason H.; Medina–González, Roger; Can, Enrique Ildefonso-Chan; Albornaz-Pat, Alma; Guilderson, Thomas P.

doi:10.1016/j.yqres.2004.11.004

Cited by 200 publications

(198 citation statements)

References 45 publications

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“…18 O from the Yucatan Peninsula shows a nearly identical LIA pattern, including a large drop in values at the beginning of the Maunder Minimum and a subsequent increase, but the records do not show the same trends during the MWP or the twentieth century [Hodell et al, 2005]. The variable correlations suggest that the relationship between cold/dry and warm/wet conditions in the tropical Atlantic and Caribbean may be too simplistic.…”

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confidence: 92%

An 8‐century tropical Atlantic SST record from the Cariaco Basin: Baseline variability, twentieth‐century warming, and Atlantic hurricane frequency

et al. 2007

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[1] We present the first direct comparison and calibration of a downcore foraminiferal Mg/Ca record to historical instrumental sea surface temperature (SST). Mg/Ca measured on the planktic foraminifer Globigerina bulloides from a Cariaco Basin sediment core strongly correlate with spring (March-May) instrumental SSTs between A.D. 1870 and 1990. A Mg/Ca SST equation is derived and a paleo-SST record is presented spanning the last 8 centuries, an interval that includes the end of the Medieval Warm Period and the Little Ice Age. The long-term record displays a surprising amount of variability. The temperature swings are not necessarily related to local upwelling variability but instead represent wider conditions in the Caribbean and western tropical Atlantic. The Mg/Ca SST record also captures the decadal and multidecadal variability observed in records of global land and sea surface temperature anomalies and Atlantic tropical storm and hurricane frequency over the late nineteenth and twentieth centuries. A divergence between the SST proxy record and Atlantic storm frequency around 1970 appears to reflect a fundamental change in Atlantic hurricane behavior noted in historical data. On average, twentieth-century temperatures are not the warmest in the entire record, but they do show the largest increase in magnitude and fastest rate of SST change over the last 800 a.

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confidence: 92%

An 8‐century tropical Atlantic SST record from the Cariaco Basin: Baseline variability, twentieth‐century warming, and Atlantic hurricane frequency

et al. 2007

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“…Low-latitude cooling during the LIA is evident from tropical glacier advances (5,6), and reduced sea-surface temperatures in the Caribbean (7)(8)(9). Dry LIA conditions in the Caribbean are relatively well documented and explained by a change in the position of the Intertropical Convergence Zone (ITCZ) (10,11), but little is known about the impact that this climatic event had on the lowland tropical ecosystems of the Americas. Lago Verde, near the coast of the Gulf of Mexico ( Fig.…”

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confidence: 99%

Tracing the effects of the Little Ice Age in the tropical lowlands of eastern Mesoamerica

Lozano‐García¹,

Caballero

Ortega

et al. 2007

Proc. Natl. Acad. Sci. U.S.A.

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The causes of late-Holocene centennial to millennial scale climatic variability and the impact that such variability had on tropical ecosystems are still poorly understood. Here, we present a highresolution, multiproxy record from lowland eastern Mesoamerica, studied to reconstruct climate and vegetation history during the last 2,000 years, in particular to evaluate the response of tropical vegetation to the cooling event of the Little Ice Age (LIA). Our data provide evidence that the densest tropical forest cover and the deepest lake of the last two millennia were coeval with the LIA, with two deep lake phases that follow the Spö rer and Maunder minima in solar activity. The high tropical pollen accumulation rates limit LIA's winter cooling to a maximum of 2°C. Tropical vegetation expansion during the LIA is best explained by a reduction in the extent of the dry season as a consequence of increased meridional flow leading to higher winter precipitation. These results highlight the importance of seasonal responses to climatic variability, a factor that could be of relevance when evaluating the impact of recent climate change.climate variability ͉ Late Holocene ͉ Mexico ͉ seasonality ͉ tropical ecosystems T he Little Ice Age (LIA) (1350-1850 A.D.) has been identified as one of the most important climatic oscillations of the late Holocene and the last of several centennial to millennial scale Holocene cooling events centered over the North Atlantic (1-4). Low-latitude cooling during the LIA is evident from tropical glacier advances (5, 6), and reduced sea-surface temperatures in the Caribbean (7-9). Dry LIA conditions in the Caribbean are relatively well documented and explained by a change in the position of the Intertropical Convergence Zone (ITCZ) (10, 11), but little is known about the impact that this climatic event had on the lowland tropical ecosystems of the Americas. Lago Verde, near the coast of the Gulf of Mexico (Fig. 1), is a highly sensitive record of recent climate change (12,13) where the response of the tropical vegetation and the lake system to the LIA cooling can be clearly traced, without any significant human impact. Multiproxy data from this lake show that in this tropical region the LIA is recorded by the deepest lake level and the densest forest cover of the last two millennia. In this article, we present arguments evaluating the role of solar forcing as an important element explaining climatic variability in the tropics and the North Atlantic region. We also discuss the role of regional moisture balance as a condition for the expression of regional precipitation trends, and, finally, we present an argument about the importance that changes in the seasonality of precipitation can have over the Gulf of Mexico coastal region, mitigating the dry LIA trend recorded in some areas of the Caribbean. Study SiteThis study is based mainly on pollen, charcoal particles, and diatom analyses on the sediment record from Lago Verde, a small, closed-basin lake at 200 m above sea level, on the outskirts of ...

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“…First, our climate reconstruction concurred to some extent with other findings from the Caribbean. The long-term trend of clay enrichment displayed by EM-1 in the bottom León mouth core matches with higher evaporation-precipitation ratios in a large part of northern South America and the Caribbean up to 140 14 C YBP through the LIA (Hodell et al, 2005;Mann et al, 2009;van der Hammen and Cleef, 1992). Second, the amplitude variation in size classes in the prodelta core was larger through the Medieval Warm Period (MWP) than the LIA.…”

Section: Backwash Effect Of Low-level Jets On Fluvial Flow and Sedimementioning

confidence: 53%

Banana Crop Expansion and Increased River-borne Sediment Exports to the Gulf of Urabá, Caribbean Coast of Colombia

Blanco-Libreros

2009

AMBIO: A Journal of the Human Environment

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Climate change on the Yucatan Peninsula during the Little Ice Age

Abstract: 2016-12-26T15:09:09

Cited by 200 publications

References 45 publications

An 8‐century tropical Atlantic SST record from the Cariaco Basin: Baseline variability, twentieth‐century warming, and Atlantic hurricane frequency

An 8‐century tropical Atlantic SST record from the Cariaco Basin: Baseline variability, twentieth‐century warming, and Atlantic hurricane frequency

Tracing the effects of the Little Ice Age in the tropical lowlands of eastern Mesoamerica

Banana Crop Expansion and Increased River-borne Sediment Exports to the Gulf of Urabá, Caribbean Coast of Colombia

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