Effects of ice sheets and precession on MIS-13 Climate
نویسنده
چکیده
Individual and combined effects of ice sheets and precession on MIS-13 climate Q. Z. Yin, A. Berger, and M. Crucifix Institut d’Astronomie et de Géophysique G. Lemaı̂tre, Université catholique de Louvain, Chemin du Cyclotron 2, 1348 Louvain-la-Neuve, Belgium Received: 23 January 2009 – Accepted: 24 January 2009 – Published: 24 February 2009 Correspondence to: Q. Z. Yin ([email protected]) Published by Copernicus Publications on behalf of the European Geosciences Union.
منابع مشابه
Extra-long interglacial in Northern Hemisphere during MISs 15-13 arising from limited extent of Arctic ice sheets in glacial MIS 14
Knowledge of the behavior of Northern Hemisphere (NH) ice sheets over the past million years is crucial for understanding the role of orbitally driven insolation changes on glacial/interglacial cycles. Here, based on the demonstrable link between changes in Chinese loess grain-size and NH ice-sheet extent, we use loess grain-size records to confirm that northern ice-sheets were restricted durin...
متن کاملPollen from the Deep-Sea: A Breakthrough in the Mystery of the Ice Ages
Pollen from deep-sea sedimentary sequences provides an integrated regional reconstruction of vegetation and climate (temperature, precipitation, and seasonality) on the adjacent continent. More importantly, the direct correlation of pollen, marine and ice indicators allows comparison of the atmospheric climatic changes that have affected the continent with the response of the Earth's other rese...
متن کاملClimate: Is the past the key to the future?
The climate of the Holocene is not well suited to be the baseline for the climate of the planet. It is an interglacial, a state typical of only 10% of the past few million years. It is a time of relative sea-level stability after a rapid 130-m rise from the lowstand during the last glacial maximum. Physical geologic processes are operating at unusual rates and much of the geochemical system is ...
متن کاملOrbital changes and climate
At the 41,000-period of orbital tilt, summer insolation forces a lagged response in northern ice sheets. This delayed ice signal is rapidly transferred to nearby northern oceans and landmasses by atmospheric dynamics. These ice-driven responses lead to late-phased changes in atmospheric CO2 that provide positive feedback to the ice sheets and also project ‘late’ 41-K forcing across the tropics ...
متن کاملThe sea-level fingerprints of ice-sheet collapse during interglacial periods
Studies of sea level during previous interglacials provide insight into the stability of polar ice sheets in the face of global climate change. Commonly, these studies correct ancient sea-level highstands for the contaminating effect of isostatic adjustment associated with past ice age cycles, and interpret the residuals as being equivalent to the peak eustatic sea level associated with excess ...
متن کامل