Sentences with phrase «past atmospheric composition»

Specifically, our premise is that the contrasting calcification tolerance of various extant species of coccolithophore to raised pCO2 reflects an «evolutionary memory» of past atmospheric composition.

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.

Air bubbles trapped in the ice cores provide a record of past atmospheric composition.

Not exact matches

Non-polar glacial ice holds a wealth of information about past changes in climate, the environment and especially atmospheric composition, such as variations in temperature, atmospheric concentrations of greenhouse gases and emissions of natural aerosols or human - made pollutants... The glaciers therefore hold the memory of former climates and help to predict future environmental changes.

Scientists encounter big challenges when reconstructing atmospheric compositions in Earth's geological past because of the lack of useable sample material.

If we can analyze ancient climates, atmospheric compositions and the interplay among the crust, atmosphere, life and climate in the geologic past, we can take some first steps at understanding what is happening today and likely to happen tomorrow.»

While it is still unknown what time interval ice cores may document, they have the potential to give us incredible insights into past climate, atmospheric composition and variability in the all important Southern Westerly Winds.

(The ESA spacecraft arrived at Sol's hottest planet on March 11, 2006, where it is being used to investigate how Venus — although similar to Earth in size, mass, and composition — evolved over the past 4.6 billion years to have atmospheric and planetary surface characteristics that now appear very different from those on Earth.)

Because this climate sensitivity is derived from empirical data on how Earth responded to past changes of boundary conditions, including atmospheric composition, our conclusions about limits on fossil fuel emissions can be regarded as largely independent of climate models.

Also, geoengineering is an awfully vague term — haven't we been doing geoengineering for the past 150 years by altering the atmospheric composition?

So, we might have been past the warmest period of this most recent interglacial, and beginning a slow, multi-thousand year descent into a new ice age — until we changed the atmospheric composition.

Because this climate sensitivity is derived from empirical data on how Earth responded to past changes of boundary conditions, including atmospheric composition, our conclusions about limits on fossil fuel emissions can be regarded as largely independent of climate models.

The NASA researchers are now assessing that South Pole ice core to better understand how regional and global climate, atmospheric composition and other variables have changed over the past 40,000 years.

Concern about such behavior derives not from theory or speculation, but from improving knowledge of how the Earth responded to past changes of atmospheric composition and from observations of ongoing changes.

The ability to hindcast the detailed changes in atmospheric composition over the past decade, particularly the variability of tropospheric O3 and CO, is limited by the availability of measurements and their integration with models and emissions data.

Changes in atmospheric composition and chemistry over the past century have affected, and those projected into the future will affect, the lifetimes of many greenhouse gases and thus alter the climate forcing of anthropogenic emissions:

I was continuing to root through the AGU FM abstracts and came across this from Christina Ravelo et al. (paragraphed for easier digestion by dyspeptic elderly bunnies): «The response of climate to past changes in atmospheric greenhouse gas composition can be used to assess Earth System sensitivity.

It's the Earth's history - how the Earth responded in the past to changes in boundary conditions, such as atmospheric composition.