Tropical Glacier and Ice Core Evidence of Climate Change on Annual to Millennial Time Scales

  title={Tropical Glacier and Ice Core Evidence of Climate Change on Annual to Millennial Time Scales},
  author={Lonnie G. Thompson and Ellen Mosley‐Thompson and M. E. Davis and Pin Lin and Keith A. Henderson and Tracy A. Mashiotta},
  journal={Climatic Change},
This paper examines the potential of the stable isotopic ratios, 18O/16O (δ 18Oice)and 2H/1H (δ Dice), preserved in mid to low latitude glaciers as a toolfor paleoclimate reconstruction. Ice cores are particularly valuable as they contain additional data, such as dust concentrations, aerosol chemistry, and accumulation rates, that can be combined with the isotopic information to assist with inferences about the regional climate conditions prevailing at the time of deposition. We use a… 

Tropical ice core records: evidence for asynchronous glaciation on Milankovitch timescales

Over the last 28 years ice core records have been systematically recovered from ten high‐elevation ice fields, nine of which are located in the low latitudes. Each core has provided new information

Holocene climate variability archived in the Puruogangri ice cap on the central Tibetan Plateau

Abstract Two ice cores (118.4 and 214.7 m in length) were collected in 2000 from the Puruogangri ice cap in the center of the Tibetan Plateau (TP) in a joint US-Chinese collaborative project. These

Ice Cores from Tropical Mountain Glaciers as Archives of Climate Change

The 20th century has seen the acceleration of unprecedented global and regional-scale climatic and environmental changes to which humans are vulnerable, and by which we will become increasingly more

Stable Isotopes through the Holocene as Recorded in Low-Latitude, High-Altitude Ice Cores

Quantitative use of stable isotopes as proxies for the air temperature at the time of precipitation formation requires establishing relevant transfer functions. Unfortunately, in remote areas where

Mid- to Late Holocene climate change: an overview

Abrupt tropical climate change: past and present.

It is argued that the present warming and associated glacier retreat are unprecedented in some areas for at least 5,200 yr, which is not only contributing to global sea-level rise but also threatening freshwater supplies in many the world's most populous regions.

To what extent do water isotope records from low accumulation Alpine ice cores reproduce instrumental temperature series?

Among Alpine ice core drilling sites, the Colle Gnifetti glacier saddle situated in the Monte Rosa summit range is the only one whose net snow accumulation rate is low enough to offer climate records

Ultra-high resolution pollen record from the northern Andes reveals rapid shifts in montane climates within the last two glacial cycles

Here we developed a composite pollen-based record of altitudinal vegetation changes from Lake F ´ (5 N) in Colombia at 2540 m elevation. We quantitatively calibrated Arboreal Pollen percentages (AP%)

Ammonium concentration in ice cores: A new proxy for regional temperature reconstruction?

[1] We present a reconstruction of tropical South American temperature anomalies over the last ∼1600 years. The reconstruction is based on a highly resolved and carefully dated ammonium record from

A multi-century ice-core perspective on 20th-century climate change with new contributions from high-Arctic and Greenland (PARCA) cores

Abstract A global collection of high temporally resolved ice-core-derived δ18O records is examined to assess whether the proxy records are consistent with contemporaneous observed temperature



Ice‐core palaeoclimate records in tropical South America since the Last Glacial Maximum

Ice-core records spanning the last 25 000 yr from the tropical Andes of South America are reviewed. These records from Quelccaya, Huascaran and Sajama present a high temporal resolution picture of

A 25,000-year tropical climate history from bolivian ice cores

The abrupt onset and termination of a Younger Dryas-type event suggest atmospheric processes as the probable drivers of regional accumulation during the LGS, during deglaciation, and over the past 3000 years, which is concurrent with higher water levels in regional paleolakes.

Tropical Climate Instability: The Last Glacial Cycle from a Qinghai-Tibetan Ice Core

An ice core record from the Guliya ice cap on the Qinghai-Tibetan Plateau provides evidence of regional climatic conditions over the last glacial cycle. 36 Cl data suggest that the deepest 20 meters

Tropical climate changes at millennial and orbital timescales on the Bolivian Altiplano

Sediment cores and down-hole logging results of deep drilling in the Salar de Uyuni show that at both millennial and orbital timescales, cold sea surface temperatures in the high-latitude North Atlantic were coeval with wet conditions in tropical South America, suggesting a common forcing.

Kilimanjaro Ice Core Records: Evidence of Holocene Climate Change in Tropical Africa

Variable deposition of F– and Na+during the African Humid Period suggests rapidly fluctuating lake levels between ∼11.7 and 4 ka, which is coincident with the “First Dark Age,” the period of the greatest historically recorded drought in tropical Africa.

Modeling δ18O in precipitation over the tropical Americas: 2. Simulation of the stable isotope signal in Andean ice cores

[1] We use the ECHAM-4 and the GISS II atmospheric general circulation models (AGCM) with incorporated stable isotopic tracers and forced with observed global sea surface temperatures (SST) between

Late Glacial Stage and Holocene Tropical Ice Core Records from Huascar�n, Peru

Two ice cores from the col of Huascar�n in the north-central Andes of Peru contain a paleoclimatic history extending well into the Wisconsinan (W�rm) Glacial Stage and include evidence of the Younger Dryas cool phase, implying that a strong warming has dominated the last two centuries.

Climatological significance of δ18O in north Tibetan ice cores

Oxygen isotopic ratios (δ18O) of precipitation samples collected over several years at three meteorological stations on the northern Tibetan Plateau were used to conduct the first investigation of

Recording of El Niño in ice core δ18O records from Nevado Huascarán, Peru

The 68-year monthly resolved time series of δ 18 O from ice cores retrieved from the glaciated col of Nevado Huascaran, Peru (9°S, 77°W, 6050 m) reflects climate variability over Amazonia and the

Ice core evidence for climate change in the Tropics: implications for our future