Recent research has focussed on exposing the dynamics of carbon cycling across rapid
climatic warming events within the Eocene extreme «greenhouse», where he has offered an alternative explanation for their genesis compared to prevailing views that invoked repeated releases of carbon from buried sedimentary reservoirs.
Chew examined the size of over 7500 fossil teeth from over one hundred types of mammals, and compared them before, during and after
the climatic warming events.
Two weeks ago we looked at the Triassic - Jurassic mass extinction, some 200 million years ago, that was caused by a large
climatic warming event after the break - up of supercontinent Pangaea led to the release of enormous amounts of first [volcanic] CO2 and then methane [from disturbed clathrates — a positive warming feedback] into the atmosphere.
Not exact matches
It will never be possible to substantiate such a claim about an individual
climatic event, but most climate models predict that the frequency and intensity of such
events will increase as the world
warms.
The 1980s was easily the
warmest decade on record and exhibited an unprecedented number of extreme
climatic events, such as storms and droughts.
Warmer weather may increase the frequency of an unusual
climatic condition called a rain - on - snow
event, says earth system scientist Jaakko Putkonen of the University of Washington, Seattle.
While there has been a 70 percent increase in heavy precipitation
events in the region since 1958, most of that has been in
warm weather rainstorms, Ken Kunkel, a researcher at the National
Climatic Data Center in Asheville, N.C., said.
In their research, which was supported by the U.S. Department of Energy, Christy and McNider found the
climatic effects of El Niño / La Niña
warming and cooling
events in the eastern equatorial Pacific Ocean largely cancelled each other out over the study period.
Because they feed in Arctic and subarctic benthic environments, gray whales are thought to be relatively sensitive to changes in climate, and
climatic events such as the Medieval
Warm Period (ca. 900 — 1200 AD) or Little Ice Age (ca. 1300 — 1850 AD) could have caused a population decline.
I've been criticized by some environmentalists in recent years for writing that the long - term picture (more CO2 =
warmer world = less ice = higher seas and lots of
climatic and ecological changes) is the only aspect of human - caused global
warming that is solidly established, and that efforts to link dramatic weather - related
events to the human influence on climate could backfire should nature wiggle the other way for awhile.
But to understand the mechanisms of
climatic changes, one needs to know the sequence of
events — for example, one needs to know whether a particular
warming in Antarctica happens before, after, or at the same time as a
warming in Greenland.
While some of these
events might have occurred without the observed
climatic warming, it's pretty likely that not all of them would.
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In this report, as an alternative to the scenarios of gradual
climatic warming that are so common, we outline an abrupt climate change scenario patterned after the 100 - year
event that occurred about 8,200 years ago.
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Event
Over the past three decades, most natural disasters (90 %) have been caused by climate - related
events, they say, and extreme
climatic events are likely to become more frequent because of global
warming.
Luterbacher et al. (13) estimated a return period for this type of extreme
event as being about 100 y in the European region, taking
climatic warming into account.
Our interpretations of the δ18O and MS records suggest a
warming event ~ 400 k.y. prior to the Cretaceous - Paleogene (K - Pg) boundary, and a period of
climatic and environmental instability in the earliest Danian.
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Events Tags: Environment, Intergovernmental Panel on Climate Change, IPCC Fourth Assessment Report
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The interglacial and the glacial planetary temperature data shows cycles of
warming and cooling interrupted by very strong «RCEs» (Rickies) Rapid
Climatic Change
Events (For example the Younger Dryas abrupt cooling
event and the termination of the last interglacial).
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«We conclude that extreme
climatic events are key drivers of biodiversity patterns and that the frequency and intensity of such episodes have major implications for predictive models of species distribution and ecosystem structure, which are largely based on gradual
warming trends.»
The report quoted David Viner, senior research scientist at the
Climatic Research Unit of the University of East Anglia, long considered an authoritative resource for global
warming research, as saying snow would soon be «a very rare and exciting
event» in Britain.
Climate change is the long - term average of a region's weather
events lumped together.There are some effects of greenhouse gases and global
warming: melting of ice caps, rising sea levels, change in
climatic patterns, spread diseases, economic consequences, increased droughts and heat waves.
The growing research area of extreme
event attribution has provided pertinent scientific evidence for a number of such
warm events for which the forced climate response rises above internal
climatic variability.
But scientists say that crop failures related to
climatic events will be inevitable in the planet's
warmer future.
As if this were not daunting enough, in 2002 the US National Academies of Science not only endorsed the IPCC's conclusions but produced a new report entitled Abrupt Climate Change: Inevitable surprises, which argued that global
warming may trigger «large, abrupt and unwelcome regional or global
climatic events» such as severe droughts and floods.
Ocean temperatures tied with 2006 as the fifth
warmest on record, and a
warming trend in the central and eastern equatorial Pacific signals a coming El Nino
event, NOAA's National
Climatic Data Center stated.
Periodic
events called El Niño and La Niña alter the circulation of
warmer and cooler water in ocean currents, leading to changes in
climatic patterns across large regions.
But as this Holland dataset confirms, the actual empirical global and regional trends of a
climatic shift of ever more severe weather
events do not support the alarmists» predictions; the irrational fears of more frequent / larger weather disasters as a result of CO2 or global / regional «
warming» is unjustified, per the scientific evidence.
But the paleoclimate record also reveals that the current
climatic warming is occurring much more rapidly than past
warming events.
But the current
climatic warming is occurring much more rapidly than past
warming events.
If nothing is done to stop global
warming, progress in almost all areas of human endeavor will gradually slow over the next fifty years because of more frequent, and more scary,
climatic events — and worse will follow.
Scientists predict that hurricanes, droughts, and other severe weather
events will increase in frequency as the planet
warms, so tomorrow's suburbs must be prepared for
climatic emergencies.
The Cenozoic Era — encompassing the past 65.5 million years, the time that has elapsed since the mass extinction
event marking the end of the Cretaceous Period — has a broad range of
climatic variation characterized by alternating intervals of global
warming and cooling.
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