Abstract Warmer temperatures than today, over a period spanning millennia, most recently occurred in the Last Interglacial period, about 129,000 to 116,000 years ago. Yet, timing and magnitude of warmth during this time interval are uncertain. Here we present reconstruction Swiss Alps full duration based on hydrogen isotopes from fluid inclusions precisely dated speleothems. We find that were up 4.3 °C warmer our present-day reference 1971 1990. Climate instability, including an abrupt...

Abstract Understanding how El Niño‐Southern Oscillation (ENSO) responds to natural variability is of key importance for future climate projections under a warming climate. However, there no clear consensus on what drives ENSO's centennial timescales. Here, we find that the epikarst in southeastern Alaska effective at filtering ENSO and solar irradiance signals from Aleutian Low regional climate, which are subsequently recorded speleothem proxy data. By applying correlation test, was...

<p>A key goal of paleoclimate science is to identify the source millennial-scale climate fluctuations. Although long-term changes in Earth��s position relative Sun are driver change on timescales �� 19 thousand years (ka), it still incompletely understood what causes rapid sub-orbital that were common during glacial periods. Here, we provide a continuous, precisely dated speleothem record from southeastern Alaska spans last 13.5 ka. Despite its location high latitudes Northern...

Abstract A stalagmite from Prince of Wales Island grew episodically between ~75,000 and ~11,100 yr BP; interrupted by seven hiatuses. Hiatuses most likely correspond to permafrost development a temperature drop up 5 °C modern conditions. Intervals calcite deposition place tight constraints on the timing mild climatic episodes in Alaska during last glacial period, when was absent, allowing water infiltration into karst system. These periods are synchronous, within dating uncertainties, with...

Abstract In the European Alps, Last Interglacial (LIG, ~129–116 ka) has been primarily studied using pollen preserved in mires and lake sediments. These records document vegetation succession across LIG, but are poorly constrained chronologically. Here, we present a precisely dated stable isotope record for early LIG (129.6 ± 0.4 to 125.0 0.8 based on two stalagmites from Katerloch, cave located south‐eastern side of Alps. The onset interglacial is marked by sharp rise oxygen values at 129.4...

ABSTRACT Marine Isotope Stage (MIS) 5c, between ~106 000 and ~93 years ago, represents an important warm period in which the current anthropogenic warming can be contextualized. Although viewed as a pronounced interstadial, its climate expression is regionally disparate, with different regions on Earth showing evidence of either cooler or warmer conditions than modern‐day. It therefore to expand temperature reconstructions gain better picture dynamics during MIS 5c. In Alaska, there are no...

Abstract Three new tephras have been identified in Southeast Alaska. An 8-cm-thick black basaltic tephra with nine discrete normally graded beds is present cores from a lake on Baker Island. The estimated age of the 13,492 ± 237 cal yr BP. Although similar to MEd adjacent Mt. Edgecumbe volcanic field, this geochemically distinct. Black recovered two additional sites Alaska, Heceta Island and Gulf Esquibel, are also distinct tephra. 14,609 343 Whereas Island/Heceta Island/Gulf Esquibel each...

Understanding the temperature evolution during Holocene is crucial for future climate projections. However, a puzzling discrepancy between models simulating warming trend second half of parallel to rise in atmospheric CO 2 concentrations and proxy data suggesting cooling this period – known as conundrum limits our understanding how will evolve future. To solve conundrum, inclusion quantitative paleotemperature records from high-latitude sites, which are extremely rare, essential. Here, we...

Understanding how El Niño-Southern Oscillation (ENSO) responds to natural variability is of key importance for future climate projections under a warming climate. However, there no clear consensus on what drives ENSO’s centennial timescales. Here, we find that the epikarst in southeastern Alaska effective at filtering ENSO and solar irradiance signals from Aleutian Low regional climate, which are subsequently recorded speleothem proxy data. By applying correlation test, was significantly...

Palynological and sedimentological analyses of lacustrine cores from Baker Island, located in southeastern Alaska's Alexander Archipelago, indicate that the beginning Younger Dryas chronozone, between approximately 12,900 cal yr BP 12,600 BP, was cooler drier than modern conditions, based on decreases percentages Pinus (pine) Tsuga mertensiana (mountain hemlock) pollen accompanied by increases Alnus (alder) fern spores. This initial cool period, lasting only 300 years, relatively mild...

Under Anthropocene warming, Alaska is one of the fastest warming regions on Earth. To place this in better context, it important to extend a high-resolution paleoclimate record throughout Holocene. However, few such records exist Alaska, with majority limited low-resolution lake sediment studies. Here, we provide continuous, precisely dated, and speleothem that extends from modern-day 13,500 yr BP. This represents first Holocene sheds light changes at high-latitude location. We find oxygen...

Marine Isotope Stage (MIS) 5c, between ~106,000 and ~93,000 years ago, represents an important warm period on Earth in which the current anthropogenic warming can be contextualized. Although viewed as a pronounced interstadial, its climate expression is regionally disparate, with different regions showing evidence of either cooler conditions than modern-day or warmer modern-day. It therefore to expand temperature reconstructions gain better picture dynamics during MIS 5c. In Alaska, there...

<p>The Last Interglacial (LIG, ~130–116 ka) was one of the warmest interglacials past 800,000 years. Although orbital configuration different, LIG is a useful test bed for future Holocene, because archives have higher preservation potential and can be dated at much precision than older interglacials, e.g. Marine Isotope Stage 11. Speleothems are among most important terrestrial to study climate LIG. Only few well-dated such studies, however, been published Europe...

The original version of this manuscript contained an error in the temperature values related to sea level correction.In original, incorrect version, conversion -0.064‰ per meter rise was applied incorrectly fluid inclusion hydrogen isotope values, resulting errors calculated mean annual values.These have been corrected both PDF and HTML versions Article following places:In fourth sentence Abstract correct states "4.3 °C" place "4.0 °C".In twelfth Introduction eighth Results section "4.6...