Sentences with phrase «ocean climate shifts»

Pacific Ocean climate shifts mean that the next decade should be very interesting.

Not exact matches

When ocean cycle shifts, globe is likely to warm up When climate models were run that included the stronger winds, they were able to reproduce the slowdown in surface temperatures.

Looking at shifts in Manley's winter temperatures from year to year, he says, gives a good reading of important natural cycles that influence climate, such as changes in ocean circulation like the North Atlantic Oscillation.

Climate scientists find the last glacial period interesting because ice cores in Greenland and ocean sediment cores have shown that during this period there were sharp shifts in global temperatures.

Scientists say reserves can help marine ecosystems and people adapt to five key impacts of climate change: ocean acidification; sea - level rise; increased intensity of storms; shifts in species distribution, and decreased productivity and oxygen availability.

Climate changes that began ~ 17,700 years ago included a sudden poleward shift in westerly winds encircling Antarctica with corresponding changes in sea ice extent, ocean circulation, and ventilation of the deep ocean.

The model suggests that the distribution of blue whales in the Northern Indian Ocean may shift seasonally, following their food as monsoon climate patterns alter the most productive habitat.

«When we included projected Antarctic wind shifts in a detailed global ocean model, we found water up to 4 °C warmer than current temperatures rose up to meet the base of the Antarctic ice shelves,» said lead author Dr Paul Spence from the ARC Centre of Excellence for Climate System Science (ARCCSS).

«We now know that 130,000 years ago, the Indian Ocean monsoons pushed farther north, and Arabia became grassland,» says Marks, who thinks the shifting climate opened new territory for human exploration.

The research, published yesterday in the journal Proceedings of the National Academy of Sciences, is the first study to find the signal of climate change in global precipitation shifts across land and ocean.

«By prescribing the effects of human - made climate change and observed global ocean temperatures, our model can reproduce the observed shifts in weather patterns and wildfire occurrences.»

However, shifts in the average climate of the tropical oceans could change the relative amounts of expansion in these two adjoining oceans, and ultimately modulate the long - term change in the IPWP impact on regional rainfall amounts.

Climate change could further shift wind patterns and ocean currents, expanding cold water further north along the coasts of Isabela and Fernandina and driving fish populations higher, according to the new study.

But a new study from the Woods Hole Oceanographic Institution (WHOI) suggests these changes are themselves shifting in unexpected ways, with potentially significant consequences for the ocean and climate.

However, marine scientists, under the auspices of the GEOMAR Helmholtz Centre for Ocean Research Kiel, recently managed to successfully hindcast climate shifts in the Pacific.

This shift is likely to continue: Climate change and pollution are changing the ocean chemistry, creating conditions favorable to jellyfish.

«The surge in global temperatures since 1977 can be attributed to a 1976 climate shift in the Pacific Ocean that made warming El Niño conditions more likely than they were over the previous 30 years and cooling La Niña conditions less likely» says corresponding author de Freitas.

The 1976 — 1977 climate shift occurred along with a phase shift of the PDO, and a concurrent change in the ocean (Section 3.6.3) that appears to contradict the Lindzen and Giannitsis (2002) assumption that the change was initiated by tropospheric forcing.

«This expedition offered insights into Earth's history, ranging from mountain - building in New Zealand to the shifting movements of Earth's tectonic plates to changes in ocean circulation and global climate.»

Rising CO2 levels have been linked to the globe's average temperature rise as well as a host of other changes to the climate system including sea level rise, shifts in precipitation, ocean acidification, and an increase in extreme heat.

Other research is looking into questions about how seamount populations change in response to climate - induced shifts in ocean circulation and whether habitats disturbed by human activity can recover.

«We created GhostFood to give people a personal and sensory experience of this complex and loaded term «climate change,» by bringing to life street food in a world where ocean, rainforest, and grasslands climates have continued to shift as they have in recent years.»

So was there a climate shift after the turn of the century involving changes in ocean and atmospheric circulation involving cloud changes?

Real scientists (as opposed to climate modellers) have long maintained that the decline in Arctic ice is caused not by warmer air — in the past year or two Arctic air temperatures have actually been falling — but by shifts in major ocean currents, pushing warmer water up into the Arctic Circle.

On the 500 Mio year time scale you have to consider continental shifts which have important impacts on climate (e.g. completely different global ocean circulation).

Given the number of ways that things can go wrong with continued CO2 emissions (from ocean acidfication and sea level rise to simple warming, shifting precipitation patterns, release of buried carbon in perma - frost, and the possibility of higher climate sensitivities — which seem to be needed to account for glacial / inter-glacial transitions), crossing our fingers and carrying on with BAU seems nothing short of crazy to me.

It appears that the link address is not working.Here is the exact title of the story: Methane May be Answer to 56 million year old question: Ocean could have contained enough methane to cause drastic climate shift.

The song took on new meaning for me in 2003, when I accompanied a team of climate and ocean researchers on their annual expedition aimed at studying changes in the Arctic Ocean beneath the shifting sea ice just a few dozen miles from the North ocean researchers on their annual expedition aimed at studying changes in the Arctic Ocean beneath the shifting sea ice just a few dozen miles from the North Ocean beneath the shifting sea ice just a few dozen miles from the North Pole.

The class of hypothetical climate shifts to which I allude involve fundamental changes in the frequency and amplitude of known oscillatory behavio (u) r of the atmosphere - ocean - cryosphere system and the potential emergence of new oscillatory behaviors.

The paper uses evidence and modeling to explain how the sun - blocking impact from a 50 - year stretch of unusually intense eruptions of four tropical volcanoes caused sufficient cooling to produce a long - lasting shift in the generation and migration of Arctic Ocean sea ice, with substantial consequences for the Northern Hemisphere climate that lasted centuries and left a deep imprint on European history.

``... this is a preliminary attempt to shift climate models toward becoming a forecasting tool, mainly by tweaking them with real - world data (in this case ocean temperatures) as they churn through their simulations.»

The impacts of anthropogenic climate change include decreased ocean productivity, altered food web dynamics, reduced abundance of habitat - forming species, shifting species distributions, and a greater incidence of disease.

The researchers, writing in the journal Nature, stress that this is a preliminary attempt to shift climate models toward becoming a forecasting tool, mainly by tweaking them with real - world data (in this case ocean temperatures) as they churn through their simulations.

The team's findings, published in Nature journal Scientific Reports, confirmed the connection in past climate warming, the Pacific Ocean's temperature shifts and long episodes of drought in California.

Ensemble simulations conducted with EMICs (Renssen et al., 2002; Bauer et al., 2004) and coupled ocean - atmosphere GCMs (Alley and Agustsdottir, 2005; LeGrande et al., 2006) with different boundary conditions and freshwater forcings show that climate models are capable of simulating the broad features of the observed 8.2 ka event (including shifts in the ITCZ).

Yes, the simple term «global warming» doesn't convey all the complexities of what can happen as that warming causes air and ocean currents to shift, but climate change / disruption provides even less information.

The coup de grace is likely delivered to the old climate via new winds and an altered greenhouse, but ocean changes may be what sets up the flip to a new mode of operation — and, even more ultimately, it may be continental drift that sets up the modes into which ocean circulation can shift.

More recent work is identifying climate shifts working through the El Niño - Southern Oscillation (ENSO), Atlantic Multidecadal Oscillation (AMO), Pacific Decadal Oscillation (PDO), North Atlantic Oscillation (NAO), Southern and Northern Annular Modes (SAM and NAM), Artic Oscillation (AO), Indian Ocean Dipole (IOD), North Pacific Oscillation (NPO) and other measures of ocean and atmospheric stOcean Dipole (IOD), North Pacific Oscillation (NPO) and other measures of ocean and atmospheric stocean and atmospheric states.

In the Arctic, the tipping points identified in the new report, published on Friday, include: growth in vegetation on tundra, which replaces reflective snow and ice with darker vegetation, thus absorbing more heat; higher releases of methane, a potent greenhouse gas, from the tundra as it warms; shifts in snow distribution that warm the ocean, resulting in altered climate patterns as far away as Asia, where the monsoon could be effected; and the collapse of some key Arctic fisheries, with knock - on effects on ocean ecosystems around the globe.»

«New scientific evidence that the world's oceans... warmed significantly... ocean energy is the primary cause of extreme climate events... increasing the number of insurance - relevant hazards... a near irreversible shift... even if greenhouse gas emissions stopped, ocean temperatures would keep rising.»

DK12 used ocean heat content (OHC) data for the upper 700 meters of oceans to draw three main conclusions: 1) that the rate of OHC increase has slowed in recent years (the very short timeframe of 2002 to 2008), 2) that this is evidence for periods of «climate shifts», and 3) that the recent OHC data indicate that the net climate feedback is negative, which would mean that climate sensitivity (the total amount of global warming in response to a doubling of atmospheric CO2 levels, including feedbacks) is low.

«By prescribing the effects of man - made climate change and observed global ocean temperatures, our model can reproduce the observed shifts in weather patterns and wildfire occurrences.»

«The use of a coupled ocean — atmosphere — sea ice model to hindcast (i.e., historical forecast) recent climate variability is described and illustrated for the cases of the 1976/77 and 1998/99 climate shift events in the Pacific.

The climate shifts of the Pacific Ocean have been considered a primary suspect in driving the seemingly unbreakable divide, in part because many of these have a clear influence on U.S. weather.

Climate shifts in the Pacific Ocean with global implications for hydrology and radiative flux feedbacks.

There is no fair comparison Vaughan old buddy — you lack knowledge of ocean regimes or a theory of climate shifts.

Something related to jerks in the earths angular momentum leads to subtle shifts in the oceans circulation and therefore subtle shifts in the earths climate.

The reasons for this are blatantly obvious in the Pacific Ocean — but they stem from an abrupt climate shift that occurred in 1998/2001.

When the Pacific Ocean altered rainfall patterns around the world, the subsequent climate shifts coincided with the fall of Mayan civilization, researchers said, occurring after the peak in A.D. 900.

The multi-decadal climate shifts correspond precisely to changes in Pacific Ocean circulation, and in global hydrological patterns.