Goodess et al. suggest that a more direct, but untested, approach could be to construct conditional damage functions (cdfs), by identifying the statistical relationships
between the extreme events themselves (causing damage) and large - scale predictor variables.
After nearly a year of terrible climate change journalism across the board, they didn't even mention the connection
between extreme events and climate change, or the fact that this summer is a very real glimpse into our future.
Statements in the mainstream media (TV, print) about the relationship to climate change continue to reflect what I said: since no positive relationship
between extreme events has been established, therefore there is no relationship and, given that the climate is changing, the possibility of one is not reported.
A story in The Times of London examines new expressions of concern by scientists about the perils of overstating the links
between extreme events and climate change.
I asked him to elaborate and provide a few examples in which people described unfounded links
between extreme events and global warming, and also whether he thought scientists and scientific institutions like the Intergovernmental Panel on Climate Change were beyond reproach.
Try comparing the mathematically related «interarrival time
between extreme events», governed by an Exponential distribution.
Not exact matches
The consequences of mini flash crashes were first considered by Johnson et al. [20], who suggested that there «may indeed be a degree of causality
between propagating cascades of UEEs [ultrafast
extreme events] and global instability, despite huge differences in their respective timescales.»
It's challenging to make direct comparisons
between extreme rainfall
events since their weather systems (e.g., hurricanes, thunderstorms) behave differently, so scientists draw on several benchmarks depending on the situation.
Genuine beauty entails such a fragile balance
between the
extremes of complexity and harmony that the slide into either confusion or triviality is more of a possibility than with those things or
events that are closer to equilibrium.
While they did not find any conclusive differences
between the three years, it is possible that
extreme weather
events could lead to more dramatic differences
between the chemical fingerprints of some annual rings, and the authors conclude that more extensive sampling is required.
For more than 10 weeks beginning in January, sea temperatures were
between 2 °C and 4 °C warmer than usual along a 2000 - kilometre stretch of coast — the area's most
extreme warming
event since records began.
While most previous such work focuses on mean or average values, the authors in this paper acknowledge that climate in the broader sense encompasses variations
between years, trends, averages and
extreme events.
Although scientists hesitate to draw a direct relationship
between weather and climate, observation of weather patterns shows a definite correlation
between extreme weather
events and a warming climate.
The link
between human activity and unusual jet stream patterns associated with
extreme weather
events is getting stronger, says Olive Heffernan
Overall, the chances of seeing a rainfall
event as intense as Harvey have roughly tripled - somewhere
between 1.5 and five times more likely - since the 1900s and the intensity of such an
event has increased
between 8 percent and 19 percent, according to the new study by researchers with World Weather Attribution, an international coalition of scientists that objectively and quantitatively assesses the possible role of climate change in individual
extreme weather
events.
The contiguous United States has warmed considerably since 1938, and there's no question that climate change was at play this time, says National Oceanic and Atmospheric Administration scientist Martin Hoerling, who examines links
between extreme weather
events and climate.
The link
between human activity and unusual jet stream patterns associated with
extreme weather
events is getting stronger
Researchers have been trying for some time to determine how much of a connection exists
between climate change and
extreme events like downpours.
«We came as close as one can to demonstrating a direct link
between climate change and a large family of
extreme recent weather
events,» said Michael Mann, distinguished professor of atmospheric science and director, Earth System Science Center, Penn State.
Unprecedented summer warmth and flooding, forest fires, drought and torrential rain —
extreme weather
events are occurring more and more often, but now an international team of climate scientists has found a connection
between many
extreme weather
events and the impact climate change is having on the jet stream.
Researchers from several institutes around Europe have now looked into the scientific literature that addresses these global changes to examine the interactions
between biodiversity and
extreme weather
events.
The difference in sea surface temperatures (SST)
between a weak (upper) and an
extreme (lower) La Niña
event.
According to a National Research Council Report (See «Severe Space Weather
Events — Understanding Societal and Economic Impacts: A Workshop Report» [2008]-RRB-, damages from the most
extreme solar storms could range
between $ 1 trillion - $ 2 trillion within the first year and four to 10 years for full recovery.
«Simple physics (effect of [sea - level rise] on storm surge) and simple thermodynamics (i.e. Clausius - Clapeyron) are valid whether or not we can trust the models to get the specifics dynamical linkages
between climate change and
extreme weather
events right (and I'm deeply skeptical the models are up to this task at present).»
Additionally, Nassim Taleb, in his now famous work The Black Swan discussed the disconnect
between traditional statistical measures (such as standard deviation) and the occurrence of
extreme events
Developed by The Darkness 2 maker Digital
Extremes, the game features an original story set
between the
events of the 2009 film and this year's Into Darkness movie sequel.
Distinguishing
between different kinds of
extreme weather
events is important because the risks of different kinds of
events are affected by climate change in different ways.
I don't see a similar «point of contact»
between models and reality as far as attribution studies of
extreme events are concerned, given that what we need to compare are modeled statistics (which we can always have by making many model runs) and meaningful real statistics, (which are hard to get)?
Thus, whenever any
extreme weather
event occurs, it is interpreted as evidence of «climate change,» which term has become equivalent to AGW, despite the fact that the relation
between the two has never been established, but merely assumed.
A new study by Screen and Simmonds demonstrates the statistical connection
between high - amplitude planetary waves in the atmosphere and
extreme weather
events on the ground.
Here is an interesting report on the links
between tropical temperatures and increased likelihood of
extreme precipitation
events:
Here is the # 1 flawed reasoning you will have seen about this question: it is the classic confusion
between absence of evidence and evidence for absence of an effect of global warming on
extreme weather
events.
But you must distinguish
between this phenomenon and any phenomenon of greater severity or frequency of
extreme weather
events.
It's a daunting task to try to detect any links
between short - term fluctuations in
extreme weather
events and the rising influence of accumulating greenhouse gases on climate, given that
extreme weather is, by definition, rare.
According to the latest science, in most cases (outside of
extreme heat waves) the connections
between today's
extreme weather
events and human - driven climate change range from weak (hurricanes) to nil (tornadoes)-- and the dominant driver of losses in such
events is fast - paced development or settlement in places with fundamental climatic or coastal vulnerability.
James (comment # 177) I agree with you that I would be making a very academic point if no climate scientists were suggesting a general connection
between hurricanes (and other
extreme weather
events and climate change).
Winter 2009 - 2010 showed a new connectivity
between mid-latitude
extreme cold and snowy weather
events and changes in the wind patterns of the Arctic; the so - called Warm Arctic - Cold Continents pattern.
In the book I draw the connection
between extreme climate
events and the financial crisis we have lived through over the last two or three years.
We expect from CO2 - based warming less severe «
extreme weather
events» because of the blanket effect and less heat differential
between the equator and the poles.
Some climate scientists, however, are critical of that analysis, saying the correlation
between global warming and specific
extreme weather
events isn't great enough to warrant linking them.
Between the heat and the dry vegetation conditions, conditions are ripe for wildfires, which have broken out in multiple states, and Prime Minister Julia Gillard warned yesterday that global warming will mean even more
extreme weather
events.
More than 20 years of effort have not led to presidents or prime ministers — nor even their climate change ministers — making factually accurate statements about climate change, and especially the link
between climate change and
extreme weather
events.
Neither economic analyses nor meteorological investigations validate the asserted link
between recent
extreme weather
events and global warming.
Agreed that the marriage
between climatology and synoptic dynamics is important, and is a sorely missing ingredient in attempts to attribute
extreme events to AGW.
Since the 5th IPCC report was released 3 years ago, many more scientific papers have been published that also endorse the position that there is not an established link
between increases in the frequency or intensity of
extreme weather
events and anthropogenic climate change.
The news this summer has featured several new climate change science reports, and drawn the link
between current
extreme events and global warming.
What about implications for our social, political and economic landscape of the established links
between anthropogenic climate change and high - impact
extreme weather and climate
events?
Scientists are increasingly drawing links
between climate change and
extreme weather
events, either increasing the likelihood of heat waves, drought, hurricanes, heavy rainfall...
However, their use requires great care, as such documents may be biased towards describing only the more
extreme events, and are, in certain cases, prone to the use of inconsistent language
between different writers and different epochs, and to errors in dating.
The relationship
between resilience in the face of
extreme weather
events and increases in female education expenditure holds when socioeconomic development continues but the climate does not change, and socioeconomic development continues with weather paths driven by «wet» and «dry» Global Climate Models.