Sentences with phrase «abrupt climate changes studied»

Not exact matches

Even if the near future doesn't unfold like the 2004 climate - gone - haywire film The Day After Tomorrow, scientists need to be able to produce accurate models of what abrupt change (more likely spanning hundreds or thousands or years, rather than days) would look like and why it might occur, explains Zhengyu Liu, lead author of the study and director of the University of Wisconsin — Madison's Center for Climate Reclimate - gone - haywire film The Day After Tomorrow, scientists need to be able to produce accurate models of what abrupt change (more likely spanning hundreds or thousands or years, rather than days) would look like and why it might occur, explains Zhengyu Liu, lead author of the study and director of the University of Wisconsin — Madison's Center for Climate ReClimate Research.

The new study presents the most convincing evidence so far that abrupt climate change was instrumental in this development.

When comparing the history of hydrological changes in the region with artifacts from the Middle Stone Age, the researchers discovered a «striking correspondence between the archaeological record of South Africa and the timing of the abrupt climate change» as seen in the marine core, the study states.

«Egypt and the Nile are very sensitive instruments for climate change, and Egypt provides a unique historical laboratory in which to study social vulnerability and response to abrupt volcanic shocks,» says Manning.

Starting from the same kernel of scientific truth as did The Day After Tomorrow — that global warming could disrupt ocean currents in the North Atlantic — a study commissioned by the Pentagon, of all organizations, concluded that the «risk of abrupt climate change... should be elevated beyond a scientific debate to a U.S. national security concern.»

Abrupt climate changes may have predisposed big ice age mammals to extinction, argues new study

Our study suggests that at medium sea levels, powerful forces, such as the dramatic acceleration of polar ice cap melting, are not necessary to create abrupt climate shifts and temperature changes.»

«Classical case studies in which you've seen abrupt changes in climate data.

The Paleogene is an interesting time to study because global climate changed dramatically during that interval — including an abrupt warming event around 55 million years ago.

A new study shows Earth's oceanic conveyor belt, the Atlantic Meridional Overturning Circulation, may be less stable than thought, posing a risk of abrupt climate change.

MSM misunderstands or misrepresents permafrost study U.S. labs to study abrupt climate change Scientists witness first massive Arctic methane release Oklahoma plants absorb less CO2 after a hot year Cleaner air, more -LSB-...]

Uniquely and fearlessly AMEG has studied key non-linear trends in the Earth - human System and reached the stunning conclusion that the planet stands at the edge of abrupt and catastrophic climate change as a result of an unprecedented rate of change in the Arctic.

More specifically, we (a) examined whether non-significant results were omitted disproportionately in the climate change literature, (b) if there were particular trends of unexpected and abrupt changes in the number of published studies and reported effects in relation to IPCC 2007 and Climategate, (c) whether effects presented in the abstracts were significantly larger than those reported in the main body of reports, and (d) how findings from these first three tests related to the impact factor of journals.

As understanding abrupt climate change becomes increasingly crucial, ambitious plans for studying these icy environs will be ever more important.

The new study explores what happened to ocean circulation when the Earth went through a series of abrupt climate changes in the past, during a time when ice covered part of North America and temperatures were colder than today.

Gradual, insolation - driven millennial - scale temperature trends in the study area were punctuated by several abrupt climate changes, including a major transient event recorded in all five lakes between 4.3 and 3.2 ka, which overlaps in timing with abrupt climate changes previously documented around the North Atlantic region and farther afield at w4.2 ka.

Axel Timmermann, a professor of oceanography at the University of Hawaii who studies abrupt climate changes and was not involved in this study, called it a «breakthrough analysis.»

«Our study supports the view that changes in ocean circulation were at least in part responsible for causing abrupt climate changes.

Favourite plays include hyper - focus on one, extremely speculative study (T&S 09); misrepresenting the potential for abrupt cooling in the C21st, dismissing the dominance of the centennial forced trend, misrepresenting deglacial abrupt climate change; grossly over-stating the accuracy and utility of pre-CERES TOA reconstructions (especially the synthetic, non-observational ISCCP - FD reconstruction); hyper - focus on interannual OHC variability; confusion of cause and effect with long - term trends in OHC (CO2 forcing denial) and general inability to see that natural variability from now on will be riding up a forced trend which will increasingly dominate climate behaviour.

It is the potential for effects like this to trigger abrupt changes in the global climate that scientists will be studying, he told reporters today.

«The Earth's climate system is highly nonlinear: inputs and outputs are not proportional, change is often episodic and abrupt, rather than slow and gradual, and multiple equilibria are the norm... there is a relatively poor understanding of the different types of nonlinearities, how they manifest under various conditions, and whether they reflect a climate system driven by astronomical forcings, by internal feedbacks, or by a combination of both... [We] suggest a robust alternative to prediction that is based on using integrated assessments within the framework of vulnerability studies... It is imperative that the Earth's climate system research community embraces this nonlinear paradigm if we are to move forward in the assessment of the human influence on climate.»

Here we show that, contrary to some previous studies, the occurrence of innovation was tightly linked to abrupt climate change.

This study differs from previous treatments of abrupt changes by focusing on abrupt climate changes and also abrupt climate impacts that have the potential to severely affect the physical climate system, natural systems, or human systems, often affecting multiple interconnected areas of concern.

Abrupt climate change: inevitable surprises / Committee on Abrupt Climate Change, Ocean Studies Board, Polar Research Board, Board on Atmospheric Sciences and Climate, Division on Earth and Life Studies, National Research Cclimate change: inevitable surprises / Committee on Abrupt Climate Change, Ocean Studies Board, Polar Research Board, Board on Atmospheric Sciences and Climate, Division on Earth and Life Studies, National Research Cochange: inevitable surprises / Committee on Abrupt Climate Change, Ocean Studies Board, Polar Research Board, Board on Atmospheric Sciences and Climate, Division on Earth and Life Studies, National Research CClimate Change, Ocean Studies Board, Polar Research Board, Board on Atmospheric Sciences and Climate, Division on Earth and Life Studies, National Research CoChange, Ocean Studies Board, Polar Research Board, Board on Atmospheric Sciences and Climate, Division on Earth and Life Studies, National Research CClimate, Division on Earth and Life Studies, National Research Council.

In particular, we would like to thank the participants of the two workshops held as part of this study, especially those who gave keynote presentations at the Workshop on Abrupt Climate Change: William Ascher, David Bradford, Grant Branstator, Tony Broccoli, Wallace Broecker, Mark Cane, Bob Dickson, Isaac Held, Sylvie Joussaume, John Kutzbach, Jean Lynch - Stieglitz, Peter Schlosser, Jeff Severinghaus, Karen Smoyer, and Gary Yohe.

One of the most intriguing and well - studied climatic events in the past is the Younger Dryas (YD), a rather abrupt climate change between ~ 12.9 and 11.6 thousand years ago.