All he explains would also be observed in
a natural warming of the climate....
The framing of» the red team effort» may be needed to concern only adaptation to
natural warming of climate and extreme weather events.
Not exact matches
«Mt Maunganui is the beach capital
of New Zealand, and our
natural training environment with our beaches and famous mountain (Mauao), with
warm climate make for the ideal location for an International Rugby Academy.
The press conference was held at the State House by Senator Marc Pacheco, chair
of the Senate Committee on Global
Warming and
Climate Change and Senate co-chair
of the Joint Committee on Environment,
Natural Resources and Agriculture.
The main cause
of climate change is greenhouse gas emissions from fossil fuels (coal, oil and
natural gas), which trap heat in the atmosphere and
warm the planet.
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.
Of course,
climate predictions will also guide adaptation to a
warmer globe, and even potentially provide early warnings for
natural disasters.
In the interest
of our future world, scientists must seek to understand the complexities
of linked
natural events and field observations that are revealed in the geologic record
of past
warmer climates.
Because the Earth's
climate has a certain amount
of natural variability, and those
natural cycles can have
warming and cooling effects that last for a couple
of decades or even longer, Tebaldi said, it takes time to detect a change.
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.
«Moreover, the latest developments in
climate science lend greater urgency to the case for action: Effects on
natural systems are already being observed and recent findings concerning the potential scope and magnitude
of damages from future
warming are increasingly worrisome,» the report says.
According to the paper,
warmer tropical waters since the mid-18th century can be the result
of both
natural variability and human - driven
climate changes.
So this effect could either be the result
of natural variability in Earth's
climate, or yet another effect
of carbon dioxide and other greenhouse gases like water vapor trapping more heat and thus
warming sea - surface temperatures.
A U.S. Forest Service (USFS) study found that between 53 and 97 percent
of natural trout populations in the Southern Appalachian region
of the U.S. could disappear due to
warmer temperatures predicted by global
climate change models.
The two studies will help scientists to understand the
natural variability
of past
climate and to predict tropical glaciers» response to future global
warming.
They dramatically accelerated the
natural breakdown
of exposed rocks, according to a new study, drawing so much planet -
warming carbon dioxide (CO2) from the atmosphere that they sent Earth's
climate spiraling into a major ice age.
While the findings clearly show that most Brits think the
climate is
warming, only 31 %
of the people surveyed thought that this was caused mostly or entirely by human activity; 47 %
of the people polled think that a combination
of natural processes and human activity are to blame.
The conclusion
of the authors: The
warming climate triggers not only the
natural production
of biogenic methane, it can also lead to stronger emissions
of fossil gas.
«For the first time we can quantify how oceans responded to slow,
natural climate warming as the world emerged from the last ice age,» says Prof. Eric Galbraith from McGill University's Department
of Earth and Oceanic Sciences, who led the study.
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
An analysis
of temperature data since 1500 all but rules out the possibility that global
warming in the industrial era is just a
natural fluctuation in the earth's
climate, according to a new study by McGill University physics professor Shaun Lovejoy.
Recent studies
of global
warming have necessitated a more comprehensive effort to quantify the
natural climate variability so that the residual change may be attributed to the anthropogenic emissions
of greenhouse gases.
Global
warming became big news for the first time during the hot summer
of 1988 when now - retired NASA
climate scientist James Hansen testified before Congress that the trend was not part
of natural climate variation, but rather the result
of emissions
of CO2 and other greenhouse gasses from human activities.
Continued emissions
of greenhouse gases will cause further
warming and long - lasting changes in all components
of the
climate system, increasing the likelihood
of widespread and profound impacts affecting all levels
of society and the
natural world, the report finds.
«This quantitative attribution
of human and
natural climate influences on the IPWP expansion increases our confidence in the understanding
of the causes
of past changes as well as for projections
of future changes under further greenhouse
warming,» commented Seung - Ki Min, a professor with POSTECH's School
of Environmental Science and Engineering.
He believes that changes in ocean circulation have
warmed the Atlantic and increased hurricane activity in the past decade and that this is simply the result
of normal oscillation in
natural climate cycles.
They found that
warming will disrupt
natural ventilation and the clearance
of polluted air, boosting the number
of days each year when air is stagnant (Nature
Climate Change, doi.org/tch).
After heating rapidly in the late 20th century, Earth
warmed only slowly in the last decade, partly as a result
of natural cycles in the
climate system.
As extreme weather events likely connected to the planet's
warming climate become increasingly common, low - income communities are positioned to suffer the worst consequences during the aftermath
of natural disasters, write the authors
of a report from the Center for American Progress called «One Storm Shy
of Despair.»
The central Bighorn Basin record essentially documents a set
of repeated,
natural experiments in
climate warming.»
Climate records derived from the analysis
of sediments show that ice shelves off the peninsula have been absent in several earlier eras, when
natural variability
warmed the world.
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.
Fact # 1: Carbon Dioxide is a Heat - Trapping Gas Fact # 2: We Are Adding More Carbon Dioxide to the Atmosphere All the Time Fact # 3: Temperatures are Rising Fact # 4: Sea Level is Rising Fact # 5:
Climate Change Can be
Natural, but What's Happening Now Can't be Explained by
Natural Forces Fact # 6: The Terms «Global
Warming» and «
Climate Change» Are Almost Interchangeable Fact # 7: We Can Already See The Effects
of Climate Change Fact # 8: Large Regions
of The World Are Seeing a Significant Increase In Extreme Weather Events, Including Torrential Rainstorms, Heat Waves And Droughts Fact # 9: Frost and Snowstorms Will Still Happen in a
Warmer World Fact # 10: Global
Warming is a Long - Term Trend; It Doesn't Mean Next Year Will Always Be
Warmer Than This Year
While weather and
natural climate patterns play a role in temperatures across the U.S., the overall background
warming of the planet has tipped the odds in favor
of heat records and away from cold ones.
Model simulations
of 20th century global
warming typically use actual observed amounts
of atmospheric carbon dioxide, together with other human (for example chloroflorocarbons or CFCs) and
natural (solar brightness variations, volcanic eruptions,...)
climate - forcing factors.
But despite that steady climb, not every year is
warmer than the one before it, thanks to the vagaries
of weather, the influence
of natural climate cycles, and the effects
of events like volcanic eruptions.
Nonetheless, even if the substantial recent trend in the AO pattern is simply a product
of natural multidecadal variability in North Atlantic
climate, it underscores the fact that western and southern Greenland is an extremely poor place to look, from a signal vs. noise point
of view, for the large - scale polar amplification signature
of anthropogenic surface
warming.
Likewise, we find that
natural variability, this last decade
warming on the low end compared previous decades, the lack
of coverage in the Arctic and so on may have played a role in Lewis» underestimating transient
climate sensitivity:
Because
of the
climate record is still short, more work needs to be done to determine how much
of the
warming results from
natural climate swings and how much from the
warming effects
of carbon dioxide released by the burning
of fossil fuels, Dr. Steig said.
The goal is to capture
natural variations in the
climate, like changes in ocean circulation or features like the El Niño Southern Oscillation, that are swamped by the signal
of human - caused
warming when looking out to the end
of the century.
The
natural causes
of past
climate variations are increasingly well - understood, and they can not explain the recent global
warming.
The U.S. press is either woefully ignorant
of the state
of the science, or is deliberately trying to find explanations for various regional weather and
climate changes that don't involve any mention
of «global
warming» — and that approach relies on the «
natural cycle» argument.
We don't know this, nor the nature and strength
of natural feedbacks in the
climate system that might drive future
warming».
These analyses, whilst not disproving the anthropogenic global
warming theory, do show that the
climate we are in today is not unusual in recent history, and therefore the possibility
of natural variability causing the
warming can not be ruled out, as it seemingly has been by many «independent» scientists, and the IPCC.
In addition, New peer - reviewed scientific studies now predict a continued lack
of global
warming for up to three decades as
natural climate factors dominate.
His research interests include studying the interactions between El Niño / Southern Oscillation (ENSO) and the monsoons
of Asia; identifying possible effects on global
climate of changing human factors, such as carbon dioxide, as well as
natural factors, such as solar variability; and quantifying possible future changes
of weather and
climate extremes in a
warmer climate.
now predict a continued lack
of global
warming for up to three decades as
natural climate factors dominate.
[emphasis added] Bast: «We believe that
climate has
warmed in the second half
of the 20th Century, we believe that there is probably a measurable human impact on
climate but it's probably very small, we think that
natural forces probably overwhelm any impact that human activity can have, that computer models are too unreliable to forecast what the future might hold for
climate and finally that a modest amount
of warming is probably going to be, on net, beneficial both to human beings and the ecosystem.
Using these much smaller
climate sensitivities, which are drawn from careful and long - running observations
of the
natural world, the projected
warming will be moderate and beneficial for the foreseeable future.
Although
climate patterns in the future may not exactly mimic those conditions, the period
of warming allowed Petrenko to reveal an important piece
of the
climate puzzle:
natural methane emissions from ancient carbon reservoirs are smaller than researchers previously thought.