Role of seasonality in the evolution of climate during the last 100 million years. Academic Article

abstract

• A simple climate model has been used to calculate the effect of past changes in the land-sea distribution on the seasonal cycle of temperatures during the last 100 million years. Modeled summer temperatures decreased over Greenland by more than 10 degrees C and over Antarctica by 5 degrees to 8 degrees C. For the last 80 million years, this thermal response is comparable in magnitude to estimated atmospheric carbon dioxide effects. Analysis of paleontological data provides some support for the proposed hypothesis that large changes due to seasonality may have sometimes resulted in an ice-free state due to high summer temperature rather than year-round warmth. Such "cool" non-glacials may have prevailed for as much as one-third of the last 100 million years.

authors

• North, Jerry

published proceedings

• Science

author list (cited authors)

• Crowley, T. J., Short, D. A., Mengel, J. G., & North, G. R.

citation count

• 118

complete list of authors

• Crowley, TJ||Short, DA||Mengel, JG||North, GR

publication date

• February 1986

publisher

• American Association for the Advancement of Science (AAAS)  Publisher

published in

• Science  Journal

keywords

• 13 Climate Action

PubMed Central ID

• 17750969

Digital Object Identifier (DOI)

• 10.1126/science.231.4738.579

start page

• 579

end page

• 584

volume

• 231

issue

• 4738

URL

• http%3A%2F%2Fdx.doi.org%2F10.1126%2Fscience.231.4738.579

user-defined tag

• 13 Climate Action