Sentences with phrase «rapid warming event»

Researchers study tiny fossilized organisms to better understand how global marine life was affected by a rapid warming event more than 55 million years ago.

This interval is well represented in the Burke Museum vertebrate paleontology collections, including a rich sample from the time just after that rapid warming event.

«Petrenko and his co-authors studied a rapid warming event from the past that serves as a modern - day analog,» Sparrow says.

«Instead, more than 1000 years of human occupation passed before a rapid warming event occurred, and then the megafauna were extinct within a hundred years.»

Evidence for these rapid warming events, on the order of 10 degrees Celsius in just 30 or so years, has shown up in the Greenland ice core, said Kim Cobb, the paper's second author.

Short, rapid warming events, known as interstadials, coincided with major extinction events, according to a team of scientists from Australia and the United...

«We showed that high - latitude wetlands are inactive during the ice age but can be rapidly reactivated during rapid warming events,» Fischer told environmentalresearchweb.

Not exact matches

The rapid global warming event, ~ 56 million years ago, known as the «Paleocene Eocene Thermal Maximum» or PETM has provided such insights.

Dr Stephen Grimes of Plymouth University, who initiated the research project, highlighted the climate changes that must have caused this increase in sediment erosion and transport — «We have climate model simulations of the effect of warming on rainfall during the PETM event, and they show some changes in the average amounts of rainfall, but the largest change is how this rainfall is packaged up — it's concentrated in more rapid, extreme events — larger and bigger storms.»

«Our study is important because tropical cyclone intensity forecasts for several past hurricanes over the Caribbean Sea have under - predicted rapid intensification events over warm oceanic features,» said Johna Rudzin, a PhD student at the UM Rosenstiel School and lead author of the study.

This model does not, however, explain one of the most puzzling features of this rapid deglaciation; namely the global formation of hundreds of metres thick deposits known as «cap carbonates», in warm waters after Snowball Earth events.

That warming was not even as rapid as what we are seeing right now, but it is the only warming event since the dinosaurs that compares in rate and magnitude.

Daniel Swain and colleagues model how the frequency of these rapid, year - to - year transitions from extreme dry to wet conditions — which they dub «precipitation whiplash events» — may change in California's future as a consequence of man - made warming.

However, Petrenko found that the gradual, natural global warming and rapid regional warming that characterized the deglaciation 12,000 years ago — events that were in some aspects comparable to the current human - driven global warming — did not trigger detectable releases of methane from these reservoirs.

Amplitude and Duration: The most significant events are terminations of the glacial period and rapid onset of global warming of the interglacial period.

Those rapid global warming events were almost always highly destructive for life, causing mass extinctions such as at the end of the Permian, Triassic, or even mid-Cambrian periods.

The discovery of other, smaller magnitude, rapid greenhouse warming events (called hyperthermals) in the millions of years following the PETM provides further opportunities to examine the response of organisms to global climate change.

However, I don't agree that Al Gore is sensationalizing hurricanes — what Gore is saying is certainly in the realm of possibilities, and although Gore's general message is dead on (and I do think is being confirmed by events such as rapid arctic melting), I don't expect 100 % certainty in his predictions (especially since it seems that the lessening of snow on Mt. Kilimanjaro isn't due to global warming.

In other words, a DO event (brought on this time by anthropogenic global warming) should be seen as larger and more rapid climate change than anthropogenic global warming.

The two kinds of climate change are sometimes confounded by non-experts — e.g., when it is claimed that DO events represent a much larger and more rapid climate change than anthropogenic global warming.

These events produce rapid climate warming which is followed by a gradual, steady cooling over many years (centuries, in fact).

The point I am trying to make is «when it is claimed that DO events represent a much larger and more rapid climate change than anthropogenic global warming,» perhaps DO events do cause rapid regional climate change larger and more rapid than anthropogenic global warming generally.

In my opinion, these events only work one way (i.e. to make global warming more rapid).

However, since their methodology suppresses most of the high frequency variability, one needs to be cautious when making comparisons between their reconstruction and relatively rapid events like the global warming of the last century.

Man's role in the extinction of the wooly mammoth and other megafaunal species of the last ice age is smaller compared with the effects of rapid climate - warming events that occurred during the era.

For example, transitions between glacial and interglacial periods are among the most rapid warming / cooling events in the paleoclimate record, and occur over several thousand years.

It is complicated, and the link between global warming and natural disasters often feels uncertain to people, since scientists can't say global warming caused this particular event (sigh...) A sense of issue fatigue can take hold, born of the difficulty of making rapid progress.

The Paleocene - Eocene Thermal Maximum (PETM) was a global warming event with a relatively rapid onset that occurred 56 million years ago at the boundary between the Paleocene and Eocene geological epochs.

3 — Some consideration of low probability, large effect events, whether this be Hansen's «tipping points» where there is rapid run - away warming, or of «Day After Tomorrow» style cooling because of slowing of the North Atlantic Conveyor (would shelve the plans to invade Canada, but would necessitate increased protection of your northern border to protect from an influx of Quebecois; — RRB --RRB-.

The purpose of the conference is to generate international media attention to the fact that many scientists believe forecasts of rapid warming and catastrophic events are not supported by sound science, and that expensive campaigns to reduce greenhouse gas emissions are not necessary or cost - effective.

The transition between the Medieval Warm Period and the Little Ice Age has been named the «A.D. 1300 Event» and has been identified as a time of rapid cooling, sea - level fall, and cultural change.

The loss of Arctic summer sea ice and the rapid warming of the continent could be altering the jet stream [3]-- and thus weather patterns — over North America, Europe and Russia, increasing the likelihood of extreme weather events and driving winter storms south.

Me — The Wong reference says — «The drop in the global ocean heat storage in the later part of 1998 is associated with cooling of the global ocean after the rapid warming of the ocean during the 1997 — 98 El Niño event (Willis et al. 2004).»

Reading the Wong paper as something other than «rapid warming of the ocean during the 1997 — 98 El Niño event» is a bit ornery.

«The drop in the global ocean heat storage in the later part of 1998 is associated with cooling of the global ocean after the rapid warming of the ocean during the 1997 — 98 El Niño event (Willis et al. 2004).»

I think it is possible that this sudden huge mechanical event after a period of slow warming leads to the rapid decline of ice build - up instead of repeating the same slope you see at the beginning of ice ages.

The evidence for rapid climate change is compelling: Sea level rise, Global temperature rise, Warming oceans, Shrinking ice sheets, Declining Arctic sea ice, Glacial retreat, Extreme events, Ocean acidification, Decreased snow cover http://climate.nasa.gov/evidence/ It's changing «rapidly».

[3] The course of a D - O event sees a rapid warming of temperature, followed by a cool period lasting a few hundred years.

A 2015 study by Francis and Stephen Vavrus, «Evidence for a wavier jet stream in response to rapid Arctic warming» concluded that global warming was driving an increase in the most extreme events because of «more frequent high - amplitude (wavy) jet - stream configurations that favor persistent weather patterns.»

The conference invitation identified its goal as «to generate international media attention to the fact that many scientists believe forecasts of rapid warming and catastrophic events are not supported by sound science.»

Responding to and in the manner of KK Tung's UPDATE (and, you can quote me): globally speaking the slowing of the rapidity of the warming, were it absent an enhanced hiatus compared to prior hiatuses, must at the least be interpreted as nothing more than a slowdown of the positive trend of uninterrupted global warming coming out of the Little Ice Age that has been «juiced» by AGW as evidenced by rapid warming during the last three decades of the 20th Century, irrespective of the fact that, «the modern Grand maximum (which occurred during solar cycles 19 — 23, i.e., 1950 - 2009),» according to Ilya Usoskin, «was a rare or even unique event, in both magnitude and duration, in the past three millennia [that's, 3,000 years].»

But over the last century, during which the IPCC claims the world experienced more rapid warming than any time in the past two millennia, the world did not experience significantly greater trends in any of these extreme weather events.

Researchers studying a rapid global warming event, around 56 million years ago, have shown evidence of major changes in the intensity of rainfall and flood events.

The study, published Sunday in the journal Nature Climate Change, is the first to find correlations between rapid Arctic warming and extreme summer weather events, since previous research had focused on the links between Arctic warming and fall and winter weather patterns.

It is an event «outside the realm of regular expectations» but one can't say «nothing in the past can convincingly point to its possibility» In my 2006 post, I argued that rapid polar warming and the potential for a melting of the tundra and massive release of methane was a black swan.

She sees the rapid warming of the Arctic weakening the northern hemisphere jet stream, and thus, once again, slowing down the weather, leaving a given pattern stuck in place for longer (making any event potentially more disruptive and extreme).

Claims that specific fires (and forest and wildfires overall) are due to human greenhouse gases have routinely been made since the 1988 testimony of NASA's top climate scientist, James Hansen, predicted that rapid and accelerating warming from GHG emissions would cause more severe and frequent weather events.

But the lack of statistically significant results and, more important, the absence of evidence pointing to a smoking gun — a physical mechanism in the climate system that ties Arctic changes to extreme events — has left many top climate researchers unconvinced that rapid Arctic warming is a major player in causing extreme weather events outside of the Arctic itself.

The PETM event being the best and most recent (65Myr bp) example of very rapid warming.

Less generous was the 2008 offer from the Heartland Institute of $ 1000 plus an all - expenses - paid trip to New York to any scientist willing to help «generate international media attention to the fact that many scientists believe forecasts of rapid warming and catastrophic events are not supported by sound science, and that expensive campaigns to reduce greenhouse gas emissions are not necessary or cost - effective.»