Sentences with phrase «significant fluctuations during»

http://onlinelibrary.wiley.com/doi/10.1029/2008JD011290/abstract Global solar irradiance showed a significant fluctuation during the last 90 years.

Not exact matches

When we apply the methods that we developed for post-war data to Depression - era data, we find that there was clearly sufficient evidence from valuations and market action to warrant a strong avoidance of risk during much of that period, and eventually to establish a significant exposure to market fluctuations.

Together with the long - term decrease of 15 p.p.m.v. during the past four glacial cycles, we suggest significant slow fluctuations in the atmospheric CO2 concentration on timescales of several 105 years, probably influenced by changes in the weathering14 or by major reorganizations in the carbon reservoir of the global ocean15.

Significant short - term (decades to century - scale) temperature and sea levels fluctuations (several degrees and many meters) during the last ice age (about 110 — 15 thousand years ago) imply great instability of the Greenland and west Antarctic ice sheets.