Sentences with phrase «by natural variability alone»

Research suggests that long - term drying trends over southern Australia can not be explained by natural variability alone.

This pattern can not be explained by natural variability alone, and is consistent with model simulations of a warming climate.2

Cycles of natural variability such as the Arctic Oscillation are known to play a role in Arctic sea ice extent, but the sharp decline seen in this decade can not be explained by natural variability alone.

«Even accounting for all uncertainties and limitations, the temperature change could not be realistically explained by natural variability alone, implying a long - term human signal,» Will told me.

However, from 1971 to 2020, they found that the average rate of change over North America, for example, was about 0.3 degrees Celsius per decade - that's higher than can be accounted for by natural variability alone.

Not exact matches

The insufficient observational coverage has also been noted by the IPCC AR4 and by Gillett et al. (Nature Geoscience, 2008), who argue that the observed warming in the Arctic and Antarctic are not consistent with internal climate variability and natural forcings alone, but are directly attributable to increased GHG levels.

... we strongly support Delworth and Knutson's (2000) contention that this high - latitude warming event represents primarily natural variability within the climate system, rather than being caused primarily by external forcings, whether solar forcing alone (Thejll and Lassen, 2000) or a combination of increasing solar irradiance, increasing anthropogenic trace gases, and decreasing volcanic aerosols.

This finding can not be explained by natural climate variability alone, the study found, and is instead consistent with global warming

Will Hobbs from the University of Tasmania and NASA's Joshua Willis have confirmed that ocean warming calculated from data collected by the HMS Challenger between 1873 — 1876 couldn't realistically be from natural variability alone, pointing strongly to humanity's role.

The new study confirmed that the losses of Arctic ice in the late 20th century can't be explained by natural climate variability alone, the researchers write Thursday (Aug. 11) in the journal Geophysical Research Letters.

It is very unlikely that Northern Hemisphere temperature variations from 1400 to 1850 can be explained by natural internal variability alone; — something, such as changes in solar and / or volcanic activity, must have driven the changes.