Sentences with phrase «fluctuations superimposed»

The 41,000 - year periodicity has continued, with smaller fluctuations superimposed on the 100,000 - year cycle.

They all show warming during the coverage period, and they all show fluctuations superimposed on the warming trend.

That may have to do with continents - scale climate fluctuations superimposed on the underlying worldwide warming trend.

Steady trends, in real life, have fluctuations superimposed on them.

Note the high frequency temperature fluctuations superimposed on the various segments of all interglacial periods.

These fluctuations superimpose the general global warming trend since the beginning of industrialization and thus complicate the accurate determination of human influence on the climate.

Not exact matches

«Such decadal climate fluctuations are superimposed on the general warming trend, so that at times it seems as if the warming trend slowed or even stopped.

The variability of the quasar is characterized by a ground state with typical fluctuation amplitudes of ~ 0.2 mag around B ~ 20.5, superimposed by a singular flare of ~ 2 yr duration (observer frame) with the maximum at 1992.81 where the UV flux has increased by a factor of ~ 20.

Increasing abundances of tropical / subtropical species throughout the 20th century reflect a warming trend superimposed on decadal - scale fluctuations.

This study highlights the expected range of projected winter air temperature and precipitation trends over the next 30 — 50 years due to unpredictable fluctuations of the North Atlantic Oscillation (NAO) superimposed upon forced anthropogenic climate change.

They know it's because of how natural fluctuations are superimposed on the impact made by man.

Superimposed upon these short - term fluctuations in the time series are more gradual variations that include a warming of between 0.4 and 0.8 °C over the course of the century.

Within that record is a quasi-periodic rise and fall of about 160 ± 40 years in duration and a shorter fluctuation of 32 ± 6 years that is superimposed on the 160 - year fluctuation.

What you see is that there are relatively high - frequency fluctuations (the largest one is related to the El Niño Southern Oscillation) superimposed on any underlying trend.

For 900 years, this series exhibits multi-decadal fluctuations with amplitudes up to 0.3 °C superimposed on a negative trend of 0.15 °C, followed by an abrupt warming (~ 0.4 °C) matching that observed in the instrumental data during the first half of the 20th century.

Superimposed on these long - term trends are millennial - scale fluctuations characterized by periods of low sea - ice and high sea - surface temperature and salinity that appear quasi-cyclic with a frequency of about one every 2500 — 3000 years.