Sentences with phrase «record atmospheric composition»
The present ice ages are the most studied and best understood, particularly the last 400,000 years, since this is the period covered by ice cores that record atmospheric composition and proxies for temperature and ice volume.
http://www.newworldencyclopedia.org/ Not exact matches
Researchers reconstructing ancient climates delve into the mineral for a record of temperature and atmospheric composition, environmental conditions and the state of the ocean at the time those minerals formed.
Air bubbles trapped in the ice cores provide a record of past atmospheric composition.
Current concentrations of atmospheric carbon dioxide and methane far exceed pre-industrial values found in polar ice core records of atmospheric composition dating back 650,000 years.
«We looked at ice cores and tropical sponge records, which give us reliable proxies for the carbon isotope composition of atmospheric carbon dioxide.
The ice cores can provide an annual record of temperature, precipitation, atmospheric composition, volcanic activity, and wind patterns.
panel cautions that trends in such short periods of record with arbitrary start and end points are not necessarily representative of how the atmosphere is changing in response to long - term human - induced changes in atmospheric composition.
Oakwood, the tragedy is not what's happening in science — things there are just as they should be: the field continues to develop new data and refined analyses, general conclusions have been reached that a very large majority support, based on well - established principles (properties of CO2, thermodynamics, effects of warmer air on evaporation...) and data (measures of CO2 levels, shifts in isotopic composition of atmospheric CO2, temperature records — instrumental and proxy,...).
The researchers first matched this fossil record secured by the Integrated Ocean Drilling Program Expedition in the western tropical Pacific to existing records from bubbles trapped in Antarctic ice cores that stretch back 800,000 years, which preserve a precise record of past atmospheric composition.