(1) there is established scientific concern
over warming of the climate system based upon evidence from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global average sea level;
Not exact matches
In the forestry sector,
warmer winter temperatures linked to
climate change is the major factor contributing to the outbreak
of the mountain pine beetle in Western Canada, which had reduced the economic value
of over 18 million hectares
of Canadian forest by 2012.
In a recent analysis
of climate events from last year, 2016, scientists determined three events — record - breaking global heat, a heat wave
over Asia, and a «blob»
of unusually
warm water in the Northern Pacific — could not have occurred without human - induced
climate change.
A new study that looks at
climate change
over the past 11,300 years — a record length
of time for any study — suggests that the current trend
of global
warming is unprecedented.
Dr. Hayhoe is the co-author
of the book A
Climate for Change: Global
Warming Facts for Faith - Based Decisions and describes herself as «a spokesperson with one principal goal — to bring public awareness to the simple truth that the scientific debate is
over, and now it's time for all
of us to take action.»
But
over the past two decades an invasion
of foreign restaurants has brought tongue - tingling tastes from
warmer climates to this chilly part
of northern Europe.
Fifty - eight percent
of Republicans believe that global
warming is a «hoax,» compared to 11 percent
of Democrats, according to new polling that underscores political divides
over climate change among U.S. residents.
Researchers from the Niels Bohr Institute have analysed the natural
climate variations
over the last 12,000 years, during which we have had a
warm interglacial period and they have looked back 5 million years to see the major features
of the Earth's
climate.
«Our results indicate that a wide range
of POPs have been remobilized into the Arctic atmosphere
over the past two decades as a result
of climate change, confirming that Arctic warming could undermine global efforts to reduce environmental and human exposure to these toxic chemicals,» write the scientists, whose analysis was published yesterday in the journal Nature Climate
climate change, confirming that Arctic
warming could undermine global efforts to reduce environmental and human exposure to these toxic chemicals,» write the scientists, whose analysis was published yesterday in the journal Nature
Climate Climate Change.
Following up on discussions in the regular negotiations, the accord would establish a start - up fund
of roughly US$ 30 billion
over the next three years to help developing countries prepare for a
warmer climate, integrate new technologies into sustainable development plans and protect their forests.
They agreed with the Intergovernmental Panel on
Climate Change that human activity had caused most
of Earth's
warming over the second half
of the 20th century.
Some species
of cranes migrate
over long distances, while cranes in
warm climates do not migrate at all.
Yet, there is merit in not completely ignoring other
climate forcers, which could affect the rate
of warming, particularly
over the next few decades,» says Stohl.
Controversy
over «incontrovertible» The roots
of the conflict can be traced to 2007, when the APS released a statement on
climate change stating, «The evidence is incontrovertible: Global
warming is occurring.»
By improving the understanding
of how much radiation CO2 absorbs, uncertainties in modelling
climate change will be reduced and more accurate predictions can be made about how much Earth is likely to
warm over the next few decades.
«Using a numerical
climate model we found that sulfate reductions
over Europe between 1980 and 2005 could explain a significant fraction
of the amplified
warming in the Arctic region during that period due to changes in long - range transport, atmospheric winds and ocean currents.
The results — along with a recent Dartmouth - led study that found air temperature also likely influenced the fluctuating size
of South America's Quelccaya Ice Cap
over the past millennium — support many scientists» suspicions that today's tropical glaciers are rapidly shrinking primarily because
of a
warming climate rather than declining snowfall or other factors.
The recent slowdown in global
warming has brought into question the reliability
of climate model projections
of future temperature change and has led to a vigorous debate
over whether this slowdown is the result
of naturally occurring, internal variability or forcing external to Earth's
climate system.
New research published in Geophysical Research Letters by University
of Melbourne scientists at the ARC Centre
of Excellence for
Climate System Science shows that a positive IPO would likely produce a sharp acceleration in global
warming over the next decade.
Over the past three decades, the incidence
of cyclones in the tropics has actually diminished — because while tropical cyclones may become more intense in a
warmer climate, it is actually more difficult to generate them.
Rich and poor were deadlocked on Wednesday
over how to raise aid to help developing countries cope with the damaging effects
of global
warming, in a setback at United Nations
climate talks in Warsaw seeking progress towards a 2015 accord.
In contrast, Bierman and colleagues» data provides a record
of continuous ice sheet activity
over eastern Greenland but can't distinguish whether this was because there was a remnant in East Greenland or whether the ice sheet remained
over the whole island, fluctuating in size as the
climate warmed and cooled
over millions
of years.
With
warmer temperatures will come more floods like the ones that have buffeted Australia
over the past year, but the other half
of the
climate equation is making itself abundantly felt as well.
The research team drew information from huge stream - temperature and biological databases contributed by
over 100 agencies and a USGS - run regional
climate model to describe
warming trends throughout 222,000 kilometers (138,000 miles)
of streams in the northwestern United States.
A few
of the main points
of the third assessment report issued in 2001 include: An increasing body
of observations gives a collective picture
of a
warming world and other changes in the
climate system; emissions
of greenhouse gases and aerosols due to human activities continue to alter the atmosphere in ways that are expected to affect the
climate; confidence in the ability
of models to project future
climate has increased; and there is new and stronger evidence that most
of the
warming observed
over the last 50 years is attributable to human activities.
The slipperiness, caused by films
of water spread
over large areas, helps ascertain how quickly a melting ice sheet will slide into the sea as the
climate warms — and thus how quickly sea levels will rise.
While the measured kidney injury resolved within two days post-marathon, the study still raises questions about the effects
of repeated strenuous activity
over time, especially in
warm climates.
The research concludes that for other changes, such as regional
warming and sea ice changes, the observations
over the satellite - era since 1979 are not yet long enough for the signal
of human - induced
climate change to be clearly separated from the strong natural variability in the region
Using 19
climate models, a team
of researchers led by Professor Minghua Zhang
of the School
of Marine and Atmospheric Sciences at Stony Brook University, discovered persistent dry and
warm biases
of simulated
climate over the region
of the Southern Great Plain in the central U.S. that was caused by poor modeling
of atmospheric convective systems — the vertical transport
of heat and moisture in the atmosphere.
Thus, a homeowner will probably not be able to show that the hurricane that destroyed his house was spawned by global
warming, but the state
of Florida may well prove that increased damage to coastal property
over several years has a lot to do with
climate change.
Another principal investigator for the project, Laura Pan, senior scientist at the National Center for Atmospheric Research in Boulder, Colo., believes storm clusters
over this area
of the Pacific are likely to influence
climate in new ways, especially as the
warm ocean temperatures (which feed the storms and chimney) continue to heat up and atmospheric patterns continue to evolve.
Dozens
of studies have already demonstrated that species are shifting their geographic ranges
over time as the
climate warms, towards cooler habitats at higher elevations and latitudes.
«
Warming greater than 2 degrees Celsius above 19th - century levels is projected to be disruptive, reducing global agricultural productivity, causing widespread loss
of biodiversity and — if sustained
over centuries — melting much
of the Greenland ice sheet with ensuing rise in sea levels
of several meters,» the AGU declares in its first statement in four years on «Human Impacts on
Climate.»
«
Climate change researchers know that when we look out
over the next 100 years, things will get
warmer and, on a per - person basis, use
of air conditioning will rise.
Kevin Trenbeth, a
climate scientist at the National Center for Atmospheric Research in Boulder, Colo., said the study didn't account for changes in sea surface temperatures, which are the main drivers
of changes in the position
of the rain belts (as is seen during an El Nino event, when Pacific
warming pushes the subtropical jet
over the Western U.S. southward).
But the period
of time
over which the team analysed the long - term trend in
warming was the past 50 years, in which this oscillation hasn't changed significantly — so almost all the
warming looks to have been the result
of anthropogenic
climate change.
The repercussions
of the findings, which were published Thursday in Science, could make it harder to hold
warming to limits set during recent United Nations
climate negotiations — but they're being received cautiously by other
climate scientists, with questions raised
over the results
of the analysis.
Earth's
climate naturally varies between times
of warming and periods
of extreme cooling (ice ages)
over thousands
of years.
These molecules control the
climate, so following them allows us to understand the history
of Mars
over the last four billion years and to track the change from a
warm and wet
climate to the cold, dry
climate we see today.
Over the past decade the former vice president has trained thousands
of climate leaders who are now spreading awareness about global
warming in communities around the planet.
But the change from 2004 to 2007 in the sun's output
of visible light, and the attendant
warming at Earth's surface
of 0.1 watt per square meter, is roughly equivalent to the overall forcing
of the sun on the
climate over the past 25 years — estimated by the U.N. Intergovernmental Panel on Climate Change to be an additional 0.12 watt per square
climate over the past 25 years — estimated by the U.N. Intergovernmental Panel on
Climate Change to be an additional 0.12 watt per square
Climate Change to be an additional 0.12 watt per square meter.
Over the next 100 years, Minnesota's iconic boreal forest and deep snow may change into a deciduous forest with winters
warm enough for some precipitation to fall as rain, according to a new U.S. Forest Service assessment
of the vulnerability
of Minnesota forests to
climate change.
Peter Stott, the head
of climate monitoring at the U.K. Met Office, agreed, noting in an email that, «The slowdown hasn't gone away, however, the results
of this study still show the
warming trend
over the past 15 years has been slower than previous 15 year periods.
A
Warmer Earth, and Fewer Insured Private insurers also point fingers at a changing
climate, citing a report issued by the Intergovernmental Panel on Climate Change (IPCC) earlier this year that concluded global warming is to blame for a doubling over the past five years of natural disasters — and that the situation will worsen if nothing is done to s
climate, citing a report issued by the Intergovernmental Panel on
Climate Change (IPCC) earlier this year that concluded global warming is to blame for a doubling over the past five years of natural disasters — and that the situation will worsen if nothing is done to s
Climate Change (IPCC) earlier this year that concluded global
warming is to blame for a doubling
over the past five years
of natural disasters — and that the situation will worsen if nothing is done to stop it.
There are some caveats with their study: The global
climate models (GCMs) do not reproduce the 1930 - 1940 Arctic
warm event very well, and the geographical differences in a limited number
of grid - boxes in the observations and the GCMs may have been erased through taking the average value
over the 90 - degree sectors.
In general,
climate scientists expect heavy downpours to increase
over the U.S. and elsewhere, as a
warmer atmosphere can hold more moisture, making more
of it available to fall as rain.
This continues the trend
of warming winters
over the past few decades as the
climate warms from increasing greenhouse gases, with the eastern two - thirds
of the country
warming the most during the winter.
There was a
warm, stable
climate with dispersed continents surounded by vast
warm and shallow seas
over continental shelves that provided light, oxygen, and nutrients for life to thrive in, because intense mountain - building also increased erosion and the discharge
of eroded nutrients into those seas.
U.S. Data Since 1895 Fail To Show
Warming Trend LINK WASHINGTON, Jan. 25 — After examining
climate data extending back nearly 100 years, a team
of Government scientists has concluded that there has been no significant change in average temperatures or rainfall in the United States
over that entire period.
The Nature article comes as
climate scientists published what they said today was the «best ever» collection
of evidence for global
warming, including temperature
over land, at sea and in the higher atmosphere, along with records
of humidity, sea - level rise, and melting ice.