Sentences with phrase «present atmospheric composition»
«It so happens that if you bring a solar component in and mix it with that fractionated krypton, you get the present atmospheric composition,» Pepin explains.
https://www.scientificamerican.com/
When the Sun was much fainter, the Earth with its present atmospheric composition would have been frozen solid.
Not exact matches
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.
Factors such as the sizes of the planet and the star, continental distribution, ocean depth, the amount of water present, tectonic activity, variability of the surface temperature, atmospheric composition, the magnetic shield, speed of rotation, axial tilt, eccentricity of the orbit, the type and amount of radiation received, the age of the solar system, and the possibility of panspermia within the system are all considered.
Matthias Schaller's striking compositions in the three series presented in this exhibition explore changing boundaries, national definitions and consequent atmospheric tensions.
The important point then is that the 33 units stored within the atmosphere as radiatively invisible potential energy are present as a function of mass and gravity in the presence of solar input and NOT atmospheric composition which is why other planets show similar lapse rate characteristics despite huge variations in composition.
the reason the period of the last 1000 years isn't much of a priority in terms of paleo simulations is that you need some specified change to external forcing (solar, atmospheric composition) or bottom boundary conditions (like continents moving around) to get a simulation that is different from present.