So, in effect, to pin down the
role of human influence on climate in the winter that has just ended, we need to roll the weather dice again thousands of times.
There is increasing concern that extreme events may be changing in frequency and intensity as a
result of human influences on climate.
Recent trends,
assessment of human influence on trends, and projections of extreme weather and climate events for which there is evidence of an observed late 20th - century trend.
Despite attempts to locate monitoring sites in places not affected by human activities, the stations are picking up
signals of human influence throughout the Caribbean basin.
However in the
absence of human influence, higher CO2 levels decreases forest fires, and on the flip side lower CO2 levels and higher oxygen increases forest fires.
«In responding to those rapid changes in climate, organisms will encounter a highly fragmented landscape that is dominated by a broad
range of human influences,» the study said.
What matters is the
scale of human influences either towards cooling or towards warming as against the underlying trend behind natural variability.
Regarding the
basics of human influence being the dominant factor in warming, no, there isn't much research going on - as that's been very well established.
What is the true nature of conservation, and what is the
role of human influence on environments and species and individual animals?
The researchers believe that it could soon face a similar future in other marine regions — not least as a
result of human influence.
Recent trends,
assessment of human influence on the trend, and projections for extreme weather events for which there is an observed late 20th century trend.
Today science is still grappling with uncertainties over the
degree of human influence, but the work of thousands of researchers before and since that 1959 article shows that it does exist.
In particular, he notes that recognizing the
fact of human influence on the global climate does not resolve the policy debate.
So, in effect, to pin down the role
of human influence on climate in 2013, we need to roll the weather dice again thousands of times.
Another relevant GRL paper was the article by Legates and Davis (1997) which criticized the use of «centered correlations» common to numerous «Detection and Attribution» studies supporting the
detection of human influence on recent climate change.
It is also important to communicate that because these rare events often result from a confluence of complicated factors, the absence of evidence
of human influence in one factor should not be confused with evidence of absence of influence on the whole event.
Many of the other 24 studies in the new issue found a strong
likelihood of human influence on extreme weather events, but stopped short of saying they were completely out of the realm of natural variability.
«In the case of California's drought, the climate models do not indicate that such extremely low precipitation is an expected
consequence of human influence on the climate system,» said
The study, just published in Nature Geoscience, is the latest in the relatively new field of attribution, where scientists identify the
fingerprints of human influence on observed changes in temperature, rainfall, and other climate parameters.
Studying weekly cycles — a human concept — in metereological variables is a common point of research, since it allows scientists to examine the
level of human influence on nature.
In Finland, the rate of warming increased to 0.2 to 0.4 C per decade after the 1960s, providing further
proof of the human influence on global warming, according to the Finnish researchers.
Anthropocene, with longtime collaborators Jennifer Baichwal and Nicholas de Pencier, investigates the irreversible
impact of human influence on the Earth's systems.
It is a system that can amplify either a human warming influence or a natural one, making the task of disentangling a signal
of human influence from other forces exceedingly tough.
«Governments have naively and unwisely accepted the
claims of a human influence on global temperatures made by a close - knit clique of a few dozen scientists, many of them climate modellers, as if such claims were representative of the opinion of the wider scientific community.