In the original article Angela did write: «This effect, called the permafrost carbon feedback, is not present in the global climate change models used to estimate
how warm the earth could get over the next century.»
This effect, called the permafrost carbon feedback, is not present in the global climate change models used to estimate
how warm the earth could get over the next century.
There is considerable uncertainty about
how warm Earth will get in the coming decades, as climate change is complex.
Not exact matches
We would learn
how things worked — what we could eat,
how to keep
warm, etc, and eventually we'd learn about healing diseases, and gravity, and the
earth orbiting the sun, and chemistry, and particle physics, etc..
Are these the same people who don't believe all the scientific proof of evolution or global
warming or
how old the
earth is?
In fact, I had never really given them much thought, and then it hit me:
how on
earth could I not go crazy over
warm chicken, cream, and tender vegetables all hidden under a perfect, golden baked crust?
Of course questions need to be addressed - most notably,
how on
earth we managed to exhaust a ten point lead and turn it into a five point deficit and why some of our best players appear to have been physically bankrupt through overuse - but this will have to wait for the
warmer months.
I completely agree with your observation about
how baby was cuddled up in your
warm, soft, heart - beating tummy for so long, why on
earth do we expect babies to sleep on a cold, firm, lifeless, solitary crib just days after they are born?
We can't say
how much
Earth will
warm over the coming years unless we know
how much more greenhouse gas will end up in the atmosphere
«
How We Know the
Earth Is
Warming» by Peter Guttorp, professor at the Norwegian Computing Center and professor emeritus in the department of statistics at the University of Washington
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.
But for planetary scientists, Jupiter's most distinctive mystery may be what's called the «energy crisis» of its upper atmosphere:
how do temperatures average about as
warm as
Earth's even though the enormous planet is more than fives times further away from the sun?
Models used to project conditions on an
Earth warmed by climate change especially need to consider
how the ocean will move excess heat around, Legg said.
Climate researchers from the Helmholtz Young Investigators Group ECUS at the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI) in Potsdam have now investigated
how temperature variability changed as the
Earth warmed from the last glacial period to the current interglacial period.
«The result is not a surprise, but if you look at the global climate models that have been used to analyze what the planet looked like 20,000 years ago — the same models used to predict global
warming in the future — they are doing, on average, a very good job reproducing
how cold it was in Antarctica,» said first author Kurt Cuffey, a glaciologist at the University of California, Berkeley, and professor of geography and of
earth and planetary sciences.
The BBC team used clever analogies and appealing graphics to discuss three key numbers that help clarify important questions about climate change: 0.85 degrees Celsius —
how much the
Earth has
warmed since the 1880s; 95 % —
how sure scientists are that human activity is the major cause of
Earth's recent
warming; and one trillion tons — the best estimate of the amount of carbon that can be burned before risking dangerous climate change.
«We were curious to learn
how Earth's carbon cycle responded during periods of rapid
warming and periods of less rapid
warming,» Ballantyne said.
And
how Australia responds might present a road map for agriculture elsewhere as the
Earth's climate
warms.
Applied to the PETM, they calculated
how fast the carbon was released,
how fast
Earth's surface
warmed, and constrained the time scale of the onset, which was at least 4,000 years.
As a result, it is unclear
how soon sea level started rising after
Earth warmed in prehistoric times,
how quickly it rose and what we can expect in the future.
That
earth will get
warmer this century is pretty much a given, but
how much
warmer is tough to pin down.
Scientists are interested in studying ancient
warming events to understand
how the
Earth behaves when the climate system is dramatically perturbed.
Although the
earth has experienced exceptional
warming over the past century, to estimate
how much more will occur we need to know
how temperature will respond to the ongoing human - caused rise in atmospheric greenhouse gases, primarily carbon dioxide.
It's not clear
how much of a greenhouse effect that would produce, but it's a good bet that
Earth would be a lot
warmer — much as it would be, say, if there were no plants drawing carbon dioxide out of the atmosphere.
«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.
By examining
how Earth cools itself back down after a period of natural
warming, a study by scientists at Duke University and NASA's Jet Propulsion Laboratory confirms that global temperature does not rise or fall chaotically in the long run.
EARTH SCIENTISTS have been forced to think again about
how our planet kept
warm in its first two billion years.
Likewise, while models can not represent the climate system perfectly (thus the uncertainly in
how much the
Earth will
warm for a given amount of emissions), climate simulations are checked and re-checked against real - world observations and are an established tool in understanding the atmosphere.
Lead author, Dr Michael Singer from School of
Earth and Ocean Sciences at Cardiff University, said: «In drylands, convective (or short, intense) rainfall controls water supply, flood risk and soil moisture but we have had little information on
how atmospheric
warming will affect the characteristics of such rainstorms, given the limited moisture in these areas.»
The experiment will run until early 2017 and help climate modelers determine
how warming at
Earth's poles could change global weather patterns.
Wet
Earth Erin Wayman's article «Faint young sun» (SN: 5/4/13, p. 30), about
how the early
Earth stayed
warm enough for liquid water, made me wonder about the effect of the temperature of the planet itself.
Otto and her colleagues count
how often the weather event of interest occurs in a
warmed world compared with 18th - century
Earth.
One of climate science's great quests is to project
how much
earth warms when carbon dioxide concentrations double — something known as climate sensitivity.
Other geoengineering studies have examined
how greenhouse gas
warming could be counteracted by making
Earth's atmosphere more reflective.
Understanding
how carbon flows between land, air and water is key to predicting
how much greenhouse gas emissions the
earth, atmosphere and ocean can tolerate over a given time period to keep global
warming and climate change at thresholds considered tolerable.
It can be seen in the following images, captured largely by photographer Gary Braasch and published in his book
Earth Under Fire:
How Global
Warming Is Changing the World (University of California Press, 2007), which chronicles some of the impacts of climate change around the world:
But we've struggled to explain
how a world much farther from the sun than
Earth is could get so
warm.
Understanding
how layers of air insulate the surface of glaciers, for example, is vital to making accurate estimates of
how fast they will melt — and sea levels will rise — as the
Earth warms under its blanket of greenhouse gases.
By studying the relationship between CO2 levels and climate change during a
warmer period in
Earth's history, the scientists have been able to estimate
how the climate will respond to increasing levels of carbon dioxide, a parameter known as «climate sensitivity».
February was the second hottest on record for the planet, trailing only last year's scorching February — a clear mark of
how much the
Earth has
warmed from the accumulation of heat - trapping greenhouse gases in the atmosphere.
-- http://iopscience.iop.org/1748-9326/9/12/124002/article «It is known that carbon dioxide emissions cause the
Earth to
warm, but no previous study has focused on examining
how long it takes to reach maximum
warming following a particular CO2 emission.
Of those nine months — from June 1997 to February 1998 — only one remains in the top five for its respective month; most fall between ninth and 16th
warmest today, a mark of
how much
Earth has
warmed over the intervening years.
For the first time, scientists have shown a direct link between rising levels of carbon dioxide — or CO2 — in
Earth's atmosphere and an increase in
how much solar energy
warms the ground.
For example, in
Earth atmospheric circulation (such as Hadley cells) transport heat between the
warmer equatorial regions to the cool polar regions and this circulation pattern not only determines the temperature distribution, but also sets which regions on
Earth are dry or rainy and
how clouds form over the planet.
Managing
how much solar radiation streams through
Earth's atmosphere might offer fast, short - term relief from global
warming.
His research was just published in Nature Geoscience, and the theory it proposes solves two long - standing riddles about the early
earth:
How come the
earth was
warm enough to have water when the sun was only three - quarters as bright 4 billion years ago, and where on
earth did the nitrogen needed for life come from?
Toby Tyrrell, Professor in
Earth System Science at the University of Southampton and co-author of the study, said: «In the future ocean, the trade - off between changing ecological and physiological costs of calcification and their benefits will ultimately decide
how this important group is affected by ocean acidification and global
warming.
To stave off the catastrophic effects of that
warming, some experts are studying
how to hack
Earth's climate.
The missions help scientists learn more about the
earth's climate system and
how global
warming is changing it.
But it is cause for concern and provides a clear sign of
how the planet is changing as the
Earth warms.