Making these assumptions gives a value for climate sensitivity consistent with
that found by climate models.
Not exact matches
Darin Kingston of d.light, whose profitable solar - powered LED lanterns simultaneously address poverty, education, air pollution / toxic fumes / health risks, energy savings, carbon footprint, and more Janine Benyus, biomimicry pioneer who
finds models in the natural world for everything from extracting water from fog (as a desert beetle does) to construction materials (spider silk) to designing flood - resistant buildings
by studying anthills in India's monsoon
climate, and shows what's possible when you invite the planet to join your design thinking team Dean Cycon, whose coffee company has not only exclusively sold organic fairly traded gourmet coffee and cocoa beans since its
founding in 1993, but has funded dozens of village - led community development projects in the lands where he sources his beans John Kremer, whose concept of exponential growth through «biological marketing,» just as a single kernel of corn grows into a plant bearing thousands of new kernels, could completely change your business strategy Amory Lovins of the Rocky Mountain Institute, who built a near - net - zero - energy luxury home back in 1983, and has developed a scientific, economically viable plan to get the entire economy off oil, coal, and nuclear and onto renewables — while keeping and even improving our high standard of living
Regardless of what
climate models find, investigating these long - distance links in weather could also pay off
by improving risk prediction and forecasts.
Other crowdsourced projects include labeling aerial photos of Mongolia in a quest to
find Genghis Khan's tomb and improving
climate models by poring over World War I ship logs for weather information.
A new
climate change
modeling tool developed
by scientists at Indiana University, Princeton University and the National Oceanographic and Atmospheric Administration
finds that carbon dioxide removal from the atmosphere owing to greater plant growth from rising CO2 levels will be partially offset
by changes in the activity of soil microbes that derive their energy from plant root growth.
Global
climate models find that rainfall in northeast Brazil is expected to decrease in the coming decades, and some rivers could see flows reduced
by 60 to 70 percent, he said.
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.
One positive
finding of the ecological niche
modelling study is that while the ranges of many species are expected to contract, much of the remaining suitable habitat for many species will be located within existing protected areas, and that the recent creation of new reserves such as Itombwe and Kabobo in the Democratic Republic of Congo, have greatly increased the protection of some species under threat
by future
climate change.
By looking at climate models, Cai found that most of the time, this oscillation is dampened by the wind flowing in the opposite directio
By looking at
climate models, Cai
found that most of the time, this oscillation is dampened
by the wind flowing in the opposite directio
by the wind flowing in the opposite direction.
While his new study makes no use of the huge computer
models commonly used
by scientists to estimate the magnitude of future
climate change, Lovejoy's findings effectively complement those of the International Panel on Climate Change (IPCC), h
climate change, Lovejoy's
findings effectively complement those of the International Panel on
Climate Change (IPCC), h
Climate Change (IPCC), he says.
Using a
model he developed, Hamilton
found that the initial location of Sputnik Planitia could be explained
by Pluto's unusual
climate and its spin axis, which is tilted
by 120 degrees.
On the basis of where in Europe each ESU is
found, the researchers then analysed whether the associated insect would be able to tolerate higher temperatures or move to somewhere cooler, using two
models developed
by the Intergovernmental Panel on
Climate Change (IPCC).
«
Climate sceptics like to criticize climate models for getting things wrong, and we are the first to admit they are not perfect, but what we are finding is that the mistakes are being made by those models which predict less warming, not those that predict more,» said Prof. Sh
Climate sceptics like to criticize
climate models for getting things wrong, and we are the first to admit they are not perfect, but what we are finding is that the mistakes are being made by those models which predict less warming, not those that predict more,» said Prof. Sh
climate models for getting things wrong, and we are the first to admit they are not perfect, but what we are
finding is that the mistakes are being made
by those
models which predict less warming, not those that predict more,» said Prof. Sherwood.
Using
climate models to project into the future, the team
found the amount of time increased temperatures are expected to strip the air of moisture could up to double
by the 2080s.
Dr Nikolaos Skliris, a Research Fellow at the University of Southampton who led the study, said: «Our
findings match what has been predicted
by models of a warming
climate; as the world gets warmer wet regions will continue to get wetter and dry regions will continue to get drier.
Using a
model of water flow into the lake, the researchers
found that 60 % of this decline was caused
by climate changes, such as change in precipitation and temperature, and that the remaining 40 % of the decline could be attributed to water resources development, such as diverting water for irrigation that would otherwise flow into the lake.
The study
by researchers including Joel E. Cohen, a visiting scholar at the University of Chicago,
finds the increase in tornado outbreaks does not appear to be the result of a warming
climate as earlier
models suggested.
On the face of it the range of the IPCC
models is centrally within the A&H 90 % range, but visual inspection of Figure 1 suggests that A&H
find that there is about a 45 % probability that
climate sensitivity is below the lower end of the range quoted
by Meehl in August 2004 (Of course the IPCC draft report, which I have not seen, may include
models with lower sensitivity than 2.6 ºC).
Running atmospheric computer
models, British researchers
found a connection between
climate change and turbulence, and they predict that the average strength of turbulence will increase
by 10 to 40 %
by 2050.
The
model found that long - term, less easily reversed behavioral changes, such as insulating homes or purchasing hybrid cars, had
by far the most impact in mitigating greenhouse gas emissions and thus reducing
climate change, versus more short - term adjustments, such as adjusting thermostats or driving fewer miles.
Model studies for
climate change between the Holocene and the Pliocene, when Earth was about 3 °C warmer,
find that slow feedbacks due to changes of ice sheets and vegetation cover amplified the fast feedback
climate response
by 30 — 50 % [216].
After all, it seems crystal clear what the underlying calculation was: since AMEG had engaged in «high profile extrapolation» using PIOMAS, and Real
Climate found this not to be judicious, they decided to take them down and discredit them
by getting those who have been working inside PIOMAS
modelling to say that they had misused or misunderstood the
model.
Mike's work, like that of previous award winners, is diverse, and includes pioneering and highly cited work in time series analysis (an elegant use of Thomson's multitaper spectral analysis approach to detect spatiotemporal oscillations in the
climate record and methods for smoothing temporal data), decadal climate variability (the term «Atlantic Multidecadal Oscillation» or «AMO» was coined by Mike in an interview with Science's Richard Kerr about a paper he had published with Tom Delworth of GFDL showing evidence in both climate model simulations and observational data for a 50 - 70 year oscillation in the climate system; significantly Mike also published work with Kerry Emanuel in 2006 showing that the AMO concept has been overstated as regards its role in 20th century tropical Atlantic SST changes, a finding recently reaffirmed by a study published in Nature), in showing how changes in radiative forcing from volcanoes can affect ENSO, in examining the role of solar variations in explaining the pattern of the Medieval Climate Anomaly and Little Ice Age, the relationship between the climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 measure
climate record and methods for smoothing temporal data), decadal
climate variability (the term «Atlantic Multidecadal Oscillation» or «AMO» was coined by Mike in an interview with Science's Richard Kerr about a paper he had published with Tom Delworth of GFDL showing evidence in both climate model simulations and observational data for a 50 - 70 year oscillation in the climate system; significantly Mike also published work with Kerry Emanuel in 2006 showing that the AMO concept has been overstated as regards its role in 20th century tropical Atlantic SST changes, a finding recently reaffirmed by a study published in Nature), in showing how changes in radiative forcing from volcanoes can affect ENSO, in examining the role of solar variations in explaining the pattern of the Medieval Climate Anomaly and Little Ice Age, the relationship between the climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 measure
climate variability (the term «Atlantic Multidecadal Oscillation» or «AMO» was coined
by Mike in an interview with Science's Richard Kerr about a paper he had published with Tom Delworth of GFDL showing evidence in both
climate model simulations and observational data for a 50 - 70 year oscillation in the climate system; significantly Mike also published work with Kerry Emanuel in 2006 showing that the AMO concept has been overstated as regards its role in 20th century tropical Atlantic SST changes, a finding recently reaffirmed by a study published in Nature), in showing how changes in radiative forcing from volcanoes can affect ENSO, in examining the role of solar variations in explaining the pattern of the Medieval Climate Anomaly and Little Ice Age, the relationship between the climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 measure
climate model simulations and observational data for a 50 - 70 year oscillation in the
climate system; significantly Mike also published work with Kerry Emanuel in 2006 showing that the AMO concept has been overstated as regards its role in 20th century tropical Atlantic SST changes, a finding recently reaffirmed by a study published in Nature), in showing how changes in radiative forcing from volcanoes can affect ENSO, in examining the role of solar variations in explaining the pattern of the Medieval Climate Anomaly and Little Ice Age, the relationship between the climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 measure
climate system; significantly Mike also published work with Kerry Emanuel in 2006 showing that the AMO concept has been overstated as regards its role in 20th century tropical Atlantic SST changes, a
finding recently reaffirmed
by a study published in Nature), in showing how changes in radiative forcing from volcanoes can affect ENSO, in examining the role of solar variations in explaining the pattern of the Medieval
Climate Anomaly and Little Ice Age, the relationship between the climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 measure
Climate Anomaly and Little Ice Age, the relationship between the
climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 measure
climate changes of past centuries and phenomena such as Atlantic tropical cyclones and global sea level, and even a bit of work in atmospheric chemistry (an analysis of beryllium - 7 measurements).
In a recent paper
by Bengtsson & Hodges (2006), simulations with the ECHAM5 Global
Climate Model (GCM) were analysed, but they
found no increase in the number of mid-latitude storms world - wide.
Their
findings suggest that the
models used
by the Intergovernmental Panel on
Climate Change, on average, may be underestimating future warming.
However, we do not
find that
model errors can be taken as evidence that global warming is over-projected
by climate models.
48 nigelj says re quoting «Their
findings suggest that the
models used
by the Intergovernmental Panel on
Climate Change, on average, may be underestimating future warming.»
I was wondering for some time now, how much the
findings of the work of scientists, be it the IPCC, be it the PIK in Potsdam or what have you, can be taken for granted in order for policy makers to make valuable decisions (e.g. cutting carbon emissions
by half
by 2050) and if the uncertainties in the
models might outweigh certain decisions to reduce carbon emissions so that in the end it might happen that these uncertainties make these decisions obsolete, because they do not suffice to avoid «dangerous
climate change»?
DeBuys
finds that things will be fine for the 3.5 million people who currently depend on this water for daily use as long as (1) predictions of
climate change
models prove groundless, (2) the kind of droughts documented
by tree rings and other records of past
climate disruptions don't occur, and (3) the cities of central Arizona don't grow so much that they consume their agricultural buffer, their main protection against uncertain years ahead.
By analyzing
climate anomalies in the
model that are similar to those that occurred in the early twentieth century, it was
found that the simulated temperature increase in the Arctic was related to enhanced wind - driven oceanic inflow into the Barents Sea with an associated sea ice retreat.
Given that
models have been improving in their ability to
model processes, I personally
find it difficult to believe that, at least in terms of a Bayesian analysis, the
models themselves aren't doing better in terms of their ability to identify
climate sensitivity
by applying first principles to our
climate system.
Finding myself in the same foxhole as Steve Schneider when the «Nuclear Winter «balloon went up — it was launched on the anniversary of Orson Welles» War of The Worlds Broadcast with a media graphics package prepared
by the Creative Department of that great K - Street PR institution Porter Novell Inc., I remarked to him that it all seemed like a bad joke on Cold War policy analysts, played at the expense of the credibility of
climate modeling on the eve of the global warming debate.
Using simulations with 22
climate models and the MOSES — TRIFFID * land surface scheme, we
find that only in one of the simulations are tropical forests projected to lose biomass
by the end of the twenty - first century — and then only for the Americas.
While it is occasionally
found wandering to the interior, a large - scale shift to freshwater habitat, as is suggested
by Audubon's
climate model, is quite unlikely, regardless of future
climate.
That
finding, supported
by Forest 2006 Fig.S.7, means that the SFZ 2008 surface
model data on their own provide very little discrimination against high
climate sensitivity, unlike the CSF 2005 data.
Spencer, who uses what he calls a simple
model without looking at ocean heat or El Nino effects,
finds fault with the more complicated
models often run
by mainstream
climate scientists.
Although the IPCC
climate models have performed remarkably well in projecting average global surface temperature warming thus far, Rahmstorf et al. (2012)
found that the IPCC underestimated global average sea level rise since 1993
by 60 %.
However, our new statistical estimate of unforced variability is not radically different from that simulated
by climate models and for the most part we
find that
climate models seem to get the «big picture» correct.
Specifically, when he looked at the
climate models used
by the IPCC, Kiehl
found they all used very different assumptions for aerosol cooling and, most significantly, he
found that each of these varying assumptions were exactly what was required to combine with that
model's unique sensitivity assumptions to reproduce historical temperatures.
By putting
models through their paces in an all - water world, scientists at Pacific Northwest National Laboratory
found highly scale - sensitive issues in regional
climate modeling.
He was referring to the
climate model software written
by CRU, I cou; dn't
find an actual name for it but I did
find the read me and along with it a great write up on why «open source science» would've helped avoid this scandal:
Inconvenient: New paper
finds the last interglacial was warmer than today — not simulated
by climate models Watts Up With That?
In the paper, according to the abstract, Scafetta compares the performance of a recently proposed empirical
climate model based on astronomical harmonics against all CMIP3 available general circulation
climate models (GCM) used
by the IPCC (2007) and
finds that the
climate appears to be resonating with, or is synchronized to, a set of natural harmonics that have been associated to the solar system planetary motion.
``... since uncertainty is a structural component of
climate and hydrological systems, Anagnostopoulos et al. (2010)
found that large uncertainties and poor skill were shown
by GCM predictions without bias correction... it can not be addressed through increased
model complexity....
I
find the following section immensely telling about
climate modeling: «The bottom line is that, although there has been some narrowing of the range of
climate sensitivities that emerge from realistic
models [Del Genio and Wolf, 2000],
models still can be made to yield a wide range of sensitivities
by altering
model parameterizations.
As for my interest in the other side, that would be the side of light of course, while the dark side is where we
find you groping about, led
by the specious prognostications of AGW priests professing doom and gloom from their pseudoscientific crystal balls (aka
climate models) if we don't lead a more sustainable life.
Our
findings suggest that further changes to temperature extremes over parts of the Earth are likely to occur earlier than projected
by the current
climate models.
The most notable new result is the
finding that the tropical Pacific has warmed significantly more slowly (and maybe not at all near the equator) than the rest of the world over this time, a feature that is not captured
by most
climate models simulations of 20th century
climate changes.
We
find that the expected 95 % range of future
climate trends induced
by NAO fluctuations estimated from the observed statistics of the NAO and the
modeled response to increased GHGs is largely similar to that obtained from the CESM - LE directly, attesting to the fidelity of the
model's representation of the NAO and the utility of this approach.
This new scientific
finding helps explain why the
climate models have been such miserable failures regarding global warming predictions, as noted
by these charts: