نتایج جستجو برای: last glacial maximum

تعداد نتایج: 544572  

2006
Natalie M. Mahowald Daniel R. Muhs Samuel Levis Philip J. Rasch Masaru Yoshioka Charles S. Zender Chao Luo

[1] Desert dust simulations generated by the National Center for Atmospheric Research’s Community Climate System Model for the current climate are shown to be consistent with present day satellite and deposition data. The response of the dust cycle to last glacial maximum, preindustrial, modern, and doubled-carbon dioxide climates is analyzed. Only natural (non-land use related) dust sources ar...

Journal: :Science 2006
Joerg M Schaefer George H Denton David J A Barrell Susan Ivy-Ochs Peter W Kubik Bjorn G Andersen Fred M Phillips Thomas V Lowell Christian Schlüchter

Isotopic records from polar ice cores imply globally asynchronous warming at the end of the last glaciation. However, 10Be exposure dates show that large-scale retreat of mid-latitude Last Glacial Maximum glaciers commenced at about the same time in both hemispheres. The timing of retreat is consistent with the onset of temperature and atmospheric CO2 increases in Antarctic ice cores. We sugges...

The morphology of glacial valley can be described in terms of power law or quadratic equations fitted to valley cross-profiles. These two models are used to study the cross-profiles of 86 valley cross-profiles in the Zardkuh Mountain in order to understand the evolutional patterns of valleys. Assessment of using the power law function indicates that b values for both valley sides range from 1.0...

Journal: :Proceedings of the National Academy of Sciences 2014

Journal: :Proceedings of the Royal Society B: Biological Sciences 2018

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