منابع مشابه
New oceanic proxies for paleoclimate
Environmental variables such as temperature and salinity cannot be directly measured for the past. Such variables do, however, influence the chemistry and biology of the marine sedimentary record in a measurable way. Reconstructing the past environment is therefore possible by ‘proxy’. Such proxy reconstruction uses chemical and biological observations to assess two aspects of Earth’s climate s...
متن کاملComparative performance of paleoclimate field and index reconstructions derived from climate proxies and noise-only predictors
[1] The performance of climate field reconstruction (CFR) and index reconstruction methods is evaluated using proxy and non-informative predictor experiments. The skill of both reconstruction methods is determined using proxy data targeting the western region of North America. The results are compared to those targeting the same region, but derived from non-informative predictors comprising red...
متن کاملAssessment of hydrogen isotopic c ompositions of n-fatty acids as paleoclimate proxies in Lake Biwa sediments
Compound specific hydrogen isotopic compositions (dD) of free and bound forms of n-fatty acids (FA)
متن کاملSea ice in the paleoclimate system: the challenge of reconstructing sea ice from proxies - an introduction - 1-s2.0-S0277379113003089-main
Sea ice is an important component of the Earth system with complex dynamics imperfectly documented from direct observations, which are primarily limited to the last 40 years. Whereas large amplitude variations of sea ice have been recorded, especially in the Arctic, with a strikingly fast decrease in recent years partly attributed to the impact of anthropogenic climate changes, little is known ...
متن کاملPaleoclimate Modeling, Pre-quaternary
Introduction Pre-Quaternary paleoclimate modeling is the science of simulating climate change over the earliest 99.9% of Earth’s history using numerical models of the climate system. The record of pre-Quaternary climate documents enormous climate swings with global ice-covered and ice-free end members. A number of climate factors shaped Quaternary and pre-Quaternary paleoclimate on timescales r...
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ژورنال
عنوان ژورنال: AGU Advances
سال: 2020
ISSN: 2576-604X,2576-604X
DOI: 10.1029/2020av000244