Abrupt increase in Greenland snow accumulation at the end of the Younger Dryas event

  title={Abrupt increase in Greenland snow accumulation at the end of the Younger Dryas event},
  author={Richard B. Alley and Debra A. Meese and Christopher A. Shuman and Anthony J. Gow and Kendrick C. Taylor and Pieter M. Grootes and J. W. C. White and Michael Ram and Edwin D. Waddington and Paul A. Mayewski and Gregory A. Zielinski},
THE warming at the end of the last glaciation was characterized by a series of abrupt returns to glacial climate, the best-known of which is the Younger Dryas event1. Despite much study of the causes of this event and the mechanisms by which it ended, many questions remain unresolved1. Oxygen isotope data from Greenland ice cores2–4 suggest that the Younger Dryas ended abruptly, over a period of about 50 years; dust concentrations2,4 in these cores show an even more rapid transition (≲20 years… 
The Younger Dryas cold interval as viewed from central Greenland
Abstract Greenland ice-core records provide an exceptionally clear picture of many aspects of abrupt climate changes, and particularly of those associated with the Younger Dryas event, as reviewed
Younger Dryas research and its implications for understanding abrupt climatic change
The Younger Dryas refers to the final phase of cold, glacial conditions preceding the abrupt climatic warming at the beginning of the Holocene. The existence of the Younger Dryas in Europe has been
Timing of abrupt climate change at the end of the Younger Dryas interval from thermally fractionated gases in polar ice
Rapid temperature change fractionates gas isotopes in unconsolidated snow, producing a signal that is preserved in trapped air bubbles as the snow forms ice. The fractionation of nitrogen and argon
On the origin and timing of rapid changes in atmospheric methane during the Last Glacial Period
We present high resolution records of atmospheric methane from the GISP2 (Greenland Ice Sheet Project 2) ice core for four rapid climate transitions that occurred during the past 50 ka: the end of
Ocean lead at the termination of the Younger Dryas cold spell
Evidence is presented for a gradual decrease of the Labrador Current influence, northward migration of the Gulf Stream oceanic front and a rapid decline of sea-ice cover at the YD termination using multi-proxy data from a high-resolution marine sediment record.
An abrupt wind shift in western Europe at the onset of the Younger Dryas cold period
The Younger Dryas cold reversal during the last glacial termination is one of the most abrupt climate change events observed in the Northern Hemisphere. Analyses of varved lake sediments from western
Greenland ice core records and rapid climate change
Long ice cores from Greenland yield records of annually resolved climate change for the past ten to twenty thousand years, and decadal resolution for one hundred thousand years or more. These cores
Rapid climate change in the North Atlantic during the Younger Dryas recorded by deep-sea corals
Research on global climate change has increasingly focused on rapid (century-scale and decadal) changes. One such climate shift, the Younger Dryas cooling event1, took place during the last
Abrupt climate change at the end of the last glacial period inferred from trapped air in polar Ice
Nitrogen and argon isotopes in trapped air in Greenland ice show that the Greenland Summit warmed 9 +/- 3 degrees C over a period of several decades, beginning 14,672 years ago, supporting a North Atlantic rather than a tropical trigger for the climate event.
An abrupt change in the African monsoon at the end of the Younger Dryas
[1] High-resolution studies of variations in the elemental and stable carbon- and nitrogen-isotope composition of organic matter in cores from Lakes Malawi, Tanganyika, and Bosumtwi (tropical Africa)


The abrupt termination of the Younger Dryas climate event
PREVIOUS studies on two deep Greenland ice cores have shown that a long series of climate oscillations characterized the late Weichselian glaciation in the North Atlantic region1, and that the last
Irregular glacial interstadials recorded in a new Greenland ice core
THE Greenland ice sheet offers the most favourable conditions in the Northern Hemisphere for obtaining high-resolution continuous time series of climate-related parameters. Profiles of 18O/<16O ratio
The age and origin of the “Younger Dryas climate event” in Greenland ice cores
230Th/234U and 14C dating of Barbados corals has extended the calibration of 14C years B.P. to calendar years B.P. beyond the 9200 year tree ring series (Bard et al., 1990). This now permits the
A comparison of deep Antarctic ice cores and their implications for climate between 65,000 and 15,000 years ago
Abstract Three ice cores drilled in the central part of the Antarctic continent extend back to the last glacial period: one from West Antarctica (Byrd) and two from East Antarctica (Vostok and Dome
Ice-core dating of the Pleistocene/ Holcene boundary applied to a calibration of the (super 14) C time scale.
Seasonal variations in 18 O content, in acidity, and in dust content have been used to count annual layers in the Dye 3 deep ice core back to the Late Glacial. In this way the Pleistocene/Holocene
Acidity of polar ice cores in relation to absolute dating, past volcanism, and radio-echoes
' A simple method is described for detecting annual stratification of ice cores, and layers of high acidity due to violent volcanic eruptions in the past. The method is based on a relationship
The last deglaciation : absolute and radiocarbon chronologies
The main focus of the book is the last deglaciation - a period of intense and rapid climatic change which affected the global climate approximately 20,000 to 50,000 years ago. Special emphasis is
Volcanic ash from the 1362 A.D. Oræfajokull Eruption (Iceland) in the Greenland Ice Sheet
A continuous record of electrical conductivity measurements (ECM) was made on site during the drilling of a 200 m ice core at Summit, Greenland and was used to identify horizons in the ice that might
Summertime formation of Depth Hoar in central Greenland
Summertime solar heating of near-surface snow in central Greenland causes mass loss and grain growth. These depth hoar layers become seasonal markers which are observed in ice cores and snow pits.
Stable isotopes in precipitation
In chapter 2 the isotopic fractionation of water in some simple condensation-evaporation processes are considered quantitatively on the basis of the fractionation factors given in section 1.2. The