Variability of El Niño/Southern Oscillation activity at millennial timescales during the Holocene epoch

  title={Variability of El Ni{\~n}o/Southern Oscillation activity at millennial timescales during the Holocene epoch},
  author={Christopher M. Moy and Geoffrey O. Seltzer and Donald T. Rodbell and David M. Anderson},
The variability of El Niño/Southern Oscillation (ENSO) during the Holocene epoch, in particular on millennial timescales, is poorly understood. Palaeoclimate studies have documented ENSO variability for selected intervals in the Holocene, but most records are either too short or insufficiently resolved to investigate variability on millennial scales. Here we present a record of sedimentation in Laguna Pallcacocha, southern Ecuador, which is strongly influenced by ENSO variability, and covers… 
Millennial and orbital variations of El Niño/Southern Oscillation and high-latitude climate in the last glacial period
A high-resolution record of surface moisture, based on the degree of peat humification and the ratio of sedges to grass, from northern Queensland, Australia, covering the past 45,000 yr is presented, suggesting that climate variations in the tropical Pacific Ocean on millennial as well as orbital timescales, which determined precipitation in northeastern Australia, also exerted an influence on North Atlantic climate through atmospheric and oceanic teleconnections.
Holocene multidecadal- to millennial-scale hydrologic variability on the South American Altiplano
Precipitation on the South American Altiplano varies at a range of temporal scales. A long-term secular increase in moisture availability from the early/mid Holocene to the present, driven by
Coral record of reduced El Niño activity in the early 15th to middle 17th centuries
El Nino–Southern Oscillation (ENSO) powers global interannual climate variability through changes in trade wind strength, temperature and salinity anomalies, sea level, and atmospheric circulation
ENSO/SAM interactions during the middle and late Holocene
A new chronology of large magnitude rainfall events derived from the continuous high-resolution Lake Tutira storm sediment record covers the last 6800 years and provides the first insight into
Enhanced El Niño–Southern Oscillation Variability in Recent Decades
The El Niño–Southern Oscillation (ENSO) represents the largest source of year‐to‐year global climate variability. While Earth system models suggest a range of possible shifts in ENSO properties under
Evolution and forcing mechanisms of El Niño over the past 21,000 years
A series of transient Coupled General Circulation Model simulations forced by changes in greenhouse gasses, orbital forcing, the meltwater discharge and the ice-sheet history throughout the past 21,000 years show an orbitally induced strengthening of ENSO during the Holocene epoch.
centuries Coral record of reduced El Niño activity in the early 15th to middle 17th
ABSTRACTEl Nino–Southern Oscillation (ENSO) powers global interannual climate variability through changes in trade wind strength, tempera-ture and salinity anomalies, sea level, and atmospheric
Highly Variable El Niño–Southern Oscillation Throughout the Holocene
Coral records show that the El Niño–Southern Oscillation may be less sensitive to past climate forcing than previously thought, and results suggest that forced changes in ENSO, whether natural or anthropogenic, may be difficult to detect against a background of large internal variability.


Variability in the El Niño-Southern Oscillation Through a Glacial-Interglacial Cycle
Annual banded corals from Papua New Guinea are used to show that ENSO has existed for the past 130,000 years, operating even during “glacial” times of substantially reduced regional and global temperature and changed solar forcing, and it is found that during the 20th century ENGSO has been strong compared with E NSO of previous cool and warm times.
Southern Oscillation Signal in South American Palaeoclimatic Data of the Last 7000 Years
Abstract During strong El Nino events, rainfall anomalies and changes in wind patterns are observed in different regions of South America. Along the central Brazilian coast, during the 1983 El Nino
Suppression of El Niño during the Mid‐Holocene by changes in the Earth's orbit
A number of recent reports have interpreted paleoproxy data to describe the state of the tropical Pacific, especially changes in the behavior of the El Nino-Southern Oscillation (ENSO), over the
An ;15,000-Year Record of El Nino—Driven Alluviation in Southwestern Ecuador
Debris flows have deposited inorganic laminae in an alpine lake that is 75 kilometers east of the Pacific Ocean, in Ecuador. These storm-induced events were dated by radiocarbon, and the age of
Variation in Holocene El Niño frequencies: Climate records and cultural consequences in ancient Peru
Analysis of mollusks from archaeological sites on the north and central coasts of Peru indicates that between ca. 5800 and 3200–2800 cal yr B.P., El Nino events were less frequent than today, with
Climate Variability in the Andes of Ecuador and Its Relation to Tropical Pacific and Atlantic Sea Surface Temperature Anomalies
The main spatiotemporal modes of seasonal precipitation and temperature variability in the Andes of Ecuador (18N-48S) and their relation to tropical Pacific and Atlantic sea surface temperature
During 1877 and 1878 much of China was struck by famine, due to a severe drought. More than nine million people perished. In India, at the same time, more than eight million deaths were attributed to
A Late Glacial–Holocene Tephrochronology for Glacial Lakes in Southern Ecuador
Abstract Despite the presence of numerous active volcanoes in the northern half of Ecuador, few, if any, distal tephras have been previously recognized in the southern one third of the country. In