Tree-ring and glacial evidence for the medieval warm epoch and the little ice age in southern South America

  title={Tree-ring and glacial evidence for the medieval warm epoch and the little ice age in southern South America},
  author={Ricardo Villalba},
  journal={Climatic Change},
  • R. Villalba
  • Published 1 March 1994
  • Environmental Science, Geography
  • Climatic Change
A tree-ring reconstruction of summer temperatures from northern Patagonia shows distinct episodes of higher and lower temperature during the last 1000 yr. The first cold interval was from A.D. 900 to 1070, which was followed by a warm period A.D. 1080 to 1250 (approximately coincident with theMedieval Warm Epoch). Afterwards a long, cold-moist interval followed from A.D. 1270 to 1660, peaking around 1340 and 1640 (contemporaneously with earlyLittle Ice Age events in the Northern Hemisphere). In… 

Ancient Austrocedrus Tree-Ring Chronologies Used to Reconstruct Central Chile Precipitation Variability from a.d. 1200 to 2000

An expanded network of moisture-sensitive tree-ring chronologies has been developed for central Chile from long-lived cypress trees in the Andean Cordillera. A regional ring width chronology of

Climate variability 50,000 years ago in mid-latitude Chile as reconstructed from tree rings

A floating 1,229-year chronology developed from subfossil stumps of F. cupressoides trees in southern Chile dates back to approximately 50,000 14C years before present, indicating that similar growth forcing factors operated in this glacial interstadial phase as in the current interglacial conditions.

The Medieval Climate Anomaly in South America

Reconstruction of Paleoenvironmental Conditions During Late Glacial and Holocene Times in Isla de los Estados and Their Correlation with the Beagle Channel and Southern Patagonia

Late Glacial-Holocene environmental conditions were interpreted in Isla de los Estados from palynological and diatomological analysis and linked also with geoquimical studies. The deglaciation

Extensive glaciers in northwest North America during Medieval time

The Medieval Warm Period is an interval of purportedly warm climate during the early part of the past millennium. The duration, areal extent, and even existence of the Medieval Warm Period have been

A Large California Flood and Correlative Global Climatic Events 400 Years Ago

A gray silt layer 1–2 cm thick in the central Santa Barbara Basin, dated by varve counts to A.D. 1605 ± 5 yr, implies an intensity of precipitation, flooding of regional rivers, and transport of

A 1500 yr warm-season temperature record from varved Lago Plomo, Northern Patagonia (47° S) and implications for the Pacific Decadal Oscillation (PDO)

Abstract. High-resolution records of calibrated proxy data for the past 2000 yr are fundamental to place current changes into the context of pre-industrial natural forced and unforced variability.

Tree-ring based reconstructions of northern Patagonia precipitation since AD 1600

Long-term reconstructions (400 years) of seasonal and annual precipitation variations were developed for northern Patagonia east of the Andes using a new set of 16 tree ring-width chronologies from



The Little Ice Age

The evidence for the Little Ice Age, the most important fluctuation in global climate in historical times, is most dramatically represented by the advance of mountain glaciers in the sixteenth and

Climate, tree-ring, and glacial fluctuations in the Rio Frias valley, Rio Negro, Argentina.

This study documents the use of dendrochronology for dating oscillations of glaciers and climatic changes related to them. The application of dendrochronological and dendroclimatological methods

El Niño events and their relation to the Southern Oscillation: 1925–1986

Relationships among sea surface temperatures (SSTs) at the coast of Peru and offshore, river discharge in northern Peru, and sea level pressure at Darwin, Australia, during the period 1925–1986 are

Palaeoecological background: Neotropics

Strong changes of temperature and rainfall effected tropical South America during the last few millions of years; the sequence of the last glacialinterglacial cycle is relatively well known. Humid

An alluvial record of El Niño events from northern coastal Peru

  • L. Wells
  • Geology, Environmental Science
  • 1987
Overbank flood deposits of northern coastal Peru provide the potential for the development of a late Quaternary chronology of El Nino events. Alluvial deposits from the 1982–1983 El Nino event are

Patterns of Climatic Variation in Argentina and Chile—I Precipitation, 1931–60

Abstract In order to gain an understanding of the spatial connections and representativeness of instrumental and proxy climatic data from particular sites, a 30-year data set for a network of 87

Holocene history of the El Niño phenomenon as recorded in flood sediments of northern coastal Peru

  • L. Wells
  • Environmental Science, Geography
  • 1990
Significant precipitation along the north-central coast of Peru (lat 5°-10°S) occurs exclusively during El Nino incursions of warm water into the Peruvian littoral. Flood deposits from this region