«At this point it's really uncertain if there's any detectable
human influence on any hurricane or tropical cyclone metric,» Tom Knutson, an NOAA meteorologist who studies hurricanes, told Vox in October.
«At this point it's really uncertain if there's any detectable
human influence on any hurricane or tropical cyclone metric,» Tom Knutson, an NOAA meteorologist who studies hurricanes, says.
They note past ages that have been equally warm or warmer without
human influence, to say nothing of repeating patterns of climate change like ice ages (though I've met one of James Hansen's computer modelers who told me with sincere conviction that there would not be another ice age).
Whether we answer yes or no, we have to grapple with its ultimately having deep
human influences on the text.
The power of growth comes from God rather than
human influence.
The balance of nature is a Romantic idea of a pristine order before
human influence, reflecting some notion of baseline stability, i.e., «the way things were.»
Technology thus takes on a reality that is beyond
human influence.
The greatest
human influence on the sulfur cycle comes from industrial activity, mainly the combustion of coal and oil and the smelting of sulfur - bearing metallic ores.
Pinnock holds that God's power is self - limited and that this allows room for
human influence upon God (70).
the players are professional, but also subject to
human influence such as getting dispirited watching a senile manager miss window after window to bolster the team.
Now, a new study of wild mice shows that they, too, can develop signs of domestication — white fur patches and short snouts — with hardly
any human influence.
«We therefore can make a comparison statement for the first time and say it is likely that solar forcing is at least five times smaller than the combined
human influence,» Forster continues.
Human influence is discernible also in some extreme events such as unusually hot and cold nights and the incidence of heat waves.
«The contribution of sea surface temperatures was about twice that of
human influence for Oregon and Washington.»
For other gases, two important observations demonstrate
human influence.
Other scientists, led by Thomas Knutson, of the National Oceanic and Atmospheric Administration's Geophysical Fluid Dynamics Laboratory, looked at 2012's hot spring temperatures over the eastern United States and also found that
human influences contributed about 35 percent to late spring heat that year.
Although the source of the attraction of the Galápagos, both for Darwin and for tourists today, is the paucity of civilization that has allowed it to evade
human influence, Ecuadoran law says that to visit the uninhabited islands you have to be on a tour in the company of a «naturalist.»
He didn't flinch from controversy, presenting evidence for
human influence on global temperature and debunking common «natural causes» myths.
«Tropical glaciers are a bellwether of
human influence on the Earth system,» says Will Steffen, director of the International Geosphere - Biosphere Program in Stockholm, Sweden.
While natural sources of climate variability are significant, multiple lines of evidence indicate that
human influences have had an increasingly dominant effect on the climate warming observed since the mid-twentieth century.
In the spring of 2014, Koonin's drafting committee produced a statement that attributed equal weight to
human influences and natural variability as a driver of climate change, according to a source who declined to be named.
Although the magnitudes of future effects are uncertain,
human influences on the climate are growing.
The potential consequences of climate change are great and the policies of the next few decades will determine
human influences on the climate for centuries.»
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.
A plurality of the total number surveyed — 33 percent — thought it was caused by a mix of natural and
human influences.
She also thinks that though
human influence might be «greater than we realize,» this regional climate change is probably caused by many factors, including increased irrigation in the region.
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.
Estimating
the human influence on hurricanes Harvey, Irma and Maria.
The three studies, discussed in a separate news conference December 13, found that
human influence probably increased the hurricane's total rainfall, by anywhere from at least 15 percent to at least 19 percent.
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.
Whatever the case,
the human influence on the world has become overwhelming and it's high time to take responsibility for nature in this Anthropocene.
Each model had run simulations that included anthropogenic climate influences like human - released greenhouse gases and aerosols as well as simulations run without
those human influences.
They compared the probability of the extreme summer of 2013 in the natural - only experiments with the ones that had
human influences in them.
Rapid evolution of other species happens all around us all the time — and many of the most extreme examples are associated with
human influences.
But the most recent report from the Intergovernmental Panel on Climate Change — the evidence of 600 climate researchers in 32 countries reporting changes to Earth's atmosphere, ice and seas — in 2013 stated «
human influence on the climate system is clear.»
The collection of studies in the theme issue provides a rallying point for broader discussions of how
human influences shape evolution and how that evolution, in turn, influences species traits, biodiversity, and «ecosystem services» — the benefits that nature provides to humans, such as food, water and clean air.
Only a fraction of the forests present centuries ago have escaped
human influence; in many regions the forest is gone, has regrown as secondary forest, or consists of managed and plantation forests.
Prior to
human influence, the delta grew at a rate of 2 to 3 square miles per year.
The Intergovernmental Panel on Climate Change (IPCC) holds that climate change is unequivocal and that
humans influence climate, while the Nongovernmental International Panel on Climate Change (NIPCC) is skeptical of the human impact on climate change.
«The three papers come to perhaps different numbers, but we're all within uncertainty ranges, well within them, and lends confidence to the statement that there was a significant
human influence on the amount of precipitation that was produced by Hurricane Harvey,» he said.
Since people also arrived after that time, it has been impossible to determine whether natural changes or
human influence are most responsible for these extinctions.
«Not only are ecosystems around the Arctic affected by
human influences today, but the influence began more than a century ago.»
Researchers accounted for
human influence on climate by estimating the present - day chances of Harvey's rainfall totals and then comparing them with 1950s greenhouse gas levels.
Although robust populations of dolphins can handle whale watching and other
human influences, more tenuous groups might not make it, he says.
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.
Related sites University of Alaska, Fairbanks, Reindeer Research Program More on
the human influence on reindeer and caribou
Does that mean the change we're seeing now is normal, or is the climate behaving in new ways because of
human influence?
Ongoing climate change caused by
human influences will alter the nature of how rain and snow falls; areas that are prone to dry conditions will receive their precipitation in narrower windows of time.
In the GRL study, researchers used a statistical model based on historical climate data to separate how much of the extreme rainfall from Hurricane Harvey was due to natural influences and how much was due to
human influences.
Beyond what the study says about their living habits, it demonstrates just how much early
humans influenced life around them, Zeder adds.