Sentences with phrase «from warmer climates during»

The presence of juveniles in the herd also strongly hints that these creatures spent their entire lives in the Arctic, the team says; hadrosaurs of that size wouldn't have had the size or stamina to migrate to and from warmer climates during wintertime, as some scientists have proposed.

Not exact matches

This carrier is made from lightweight material that's comfortable for use during the hotter months or in warmer climates.

Notably, the rise and expansion of both the Indus Valley civilization (from about 5350 years to about 4600 years ago) and the Vedic civilization (from about 3450 years to about 3100 years ago) occurred during periods when climate was relatively warm, wet, and stable.

Researchers from the Niels Bohr Institute have analysed the natural climate variations over the last 12,000 years, during which we have had a warm interglacial period and they have looked back 5 million years to see the major features of the Earth's climate.

But researchers from the University of Geneva (UNIGE), Switzerland, working alongside the University of Zurich, discovered that this extinction took place during a short ice age which preceded the global climate warming.

But the warming that would result from adding such large amounts of carbon to the climate system would be much greater today than during the PETM and could reach up to 10 degrees.

Global warming became big news for the first time during the hot summer of 1988 when now - retired NASA climate scientist James Hansen testified before Congress that the trend was not part of natural climate variation, but rather the result of emissions of CO2 and other greenhouse gasses from human activities.

Both tree species have seen many climate changes during their time on Earth — from extremely warm periods to ice ages — and have slowly advanced across the landscape.

During the last ice age, which took place from 70,000 to 19,000 years ago, the climate in the Northern Hemisphere toggled back and forth between warm and cold states roughly every 1000 to 6000 years.

As extreme weather events likely connected to the planet's warming climate become increasingly common, low - income communities are positioned to suffer the worst consequences during the aftermath of natural disasters, write the authors of a report from the Center for American Progress called «One Storm Shy of Despair.»

Professor Richard Pancost from the University of Bristol Cabot Institute, added: «When we account for the influence of the ice sheets, we confirm that the Earth's climate changed with a similar sensitivity to overall forcing during both warmer and colder climates.»

This continues the trend of warming winters over the past few decades as the climate warms from increasing greenhouse gases, with the eastern two - thirds of the country warming the most during the winter.

In reply to a question about how did the Vikings grow wine in Norway (during the Medieval Warm Period (MWP)-RRB-, Wallace says: «It's possible that the Vikings were making wine from Concord - like grapes, which can grow in relatively cold climates.»

Proxies from all over the world have shown that global climate was as warm or even warmer during the so - called Medieval Warm Period back around a thousand yewarm or even warmer during the so - called Medieval Warm Period back around a thousand yeWarm Period back around a thousand years.

One recent study examining the Palaeocene — Eocene Thermal Maximum (about 55 million years ago), during which the planet warmed 5 - 9 °C, found that «At accepted values for the climate sensitivity to a doubling of the atmospheric CO2 concentration, this rise in CO2 can explain only between 1 and 3.5 °C of the warming inferred from proxy records» (Zeebe 2009).

A new study from The Auk: Ornithological Advances uses European House Sparrows, which have spread into a variety of climates in Australia and New Zealand since their introduction in the mid-19th century, to show that this trend in birds might actually be due to the effects of high temperatures during development — raising new alarms about how populations might be affected by global warming.

Thailand has a tropical climate year round with warm temperatures and a great deal of sunshineall year long, but diving the Similan's is only permitted during the northwest monsoon which runs from November to May.

Darwin is very hot and humid in the summer months, with its busiest period during winter - with tourists and corporate travellers from southern states escaping colder weather to Darwins consistently warm climate.

Using long - term data from the U.S Historical Climatology Network (USHCN) and preliminary data from the Climate Division Database, the U.S. nationally averaged temperature during October was 56.9 °F (13.8 °C) which was 2.1 °F (1.2 °C) above the 1901 - 2000 long - term mean, tied for 9th warmest on record.

I like this little dig at the denier - sceptic - contrarians who appear to be tree ring obsessed: «It is intriguing to note that the removal of tree - ring data from the proxy dataset yields less, rather than greater, peak cooling during the 16th — 19th centuries for both CPS and EIV methods... contradicting the claim... that tree - ring data are prone to yielding a warm - biased «Little Ice Age» relative to reconstructions using other high - resolution climate proxy indicators.»

During the so - called Holocene Climate Optimum, from approximately 8000 to 5000 years ago, when the temperatures were somewhat warmer than today, there was significantly less sea ice in the Arctic Ocean, probably less than 50 % of the summer 2007 coverage, which is absolutely lowest on record.

With the warming already committed in the climate system plus the additional warming expected from rising concentrations of greenhouse gases in the atmosphere, the Arctic will experience significant changes during this century even if greenhouse gas emissions are stabilized globally at a level lower than today's.

In reply to a question about how did the Vikings grow wine in Norway (during the Medieval Warm Period (MWP)-RRB-, Wallace says: «It's possible that the Vikings were making wine from Concord - like grapes, which can grow in relatively cold climates.»

Actually, there is some interesting work being done by Matt Huber of Purdue, following up on some earlier ideas of Emanuel's, suggesting that the role of TCs in transporting heat from equator towards the poles may be more significant than previously thought — it also allows for some interesting, though admittedly somewhat exotic, mechanisms for explaining the «cool tropics paradox» and «equable climate problem» of the early Paleogene and Cretaceous periods, i.e. the problem of how to make the higher latitudes warm without warming the tropics much, something that appears to have happened during some past warm epochs in Earth's history.

Much warmer times have also occurred in climate history — during most of the past 500 million years, Earth was probably completely free of ice sheets (geologists can tell from the marks ice leaves on rock), unlike today, when Greenland and Antarctica are ice - covered.

During the 12 - day climate summit underway in Copenhagen, countries are trying to forge consensus on how best to protect the planet from global warming.

Likewise headlines such as ««U.S. Scientist Sees New Ice Age Coming,» «Washington Post», July 9, 1971 (the scientist in question being a colleague of Dr. Hansen) or Holdren in 1971 predicting an ice age (http://www.zombietime.com/zomblog/?p=873), (although, to be fair, in the same book he simultaneously predicted global warming), or books from 1977 quoting the CIA: «The studies conclude that the world is entering a difficult period during which major climate change (further cooling) is likely to occur.»

Based on data from past climate changes, when sea level rose to +5 — 9 m, including the occurrence of extreme storms — during a time when temperatures were less than 1 ◦ C warmer than today, experts warn of similar consequences in coming decades.

Technology will advance far enough during that time to make the issue of runaway warming or climate change tipping points from human greenhouse gas emissions moot historical footnotes.

Based on data from past climate changes, when sea level rose to +5 — 9 m, including the occurrence of extreme storms — during a time when temperatures were less than 1 ◦ C warmer than today, experts warn of similar...

There may well be a small number of people who will benefit during their lifetimes from warmer temperatures and a changed climate, but that is dwarfed by the number of people who will suffer by losing their property, their livelihoods, their health, and their lives due to climate change.

First, the computer climate models on which predictions of rapid warming from enhanced atmospheric greenhouse gas concentration are based «run hot,» simulating two to three times the warming actually observed over relevant periods — during which non-anthropogenic causes probably accounted for some and could have accounted for all the observed warming — and therefore provide no rational basis for predicting future GAT.

Trump has promised to «cancel» the Paris agreement, the recently adopted global deal to curb global warming, and to curb climate regulations from the Environmental Protection Agency (EPA), including the Clean Power Plan to cut emissions from coal - fired power plants, during his first 100 days in office.

Until then, count me among the skeptics who consider this a political rather than scientific issue, especially in light of the fact that it is believed that the Antarctic and arctic shelves are breaking from stress (from «overgrowth»), not due to heat, since they are larger than they have been during recorded history, and that when the alarmists are proven conclusively to be wrong, they change the terminology («global cooling» to «global warming» to «global climate change» - face it, the global climate always has been and always will be very dynamic).

A 1 - to - 1 ratio would be expected if the climate were not warming, but the ratio during the period from 2000 - 2009 was closer to 2 - to - 1 in favor of warm temperature records.

Desler, Alexander, and Timlin (1996) said: «A prominent decade - long perturbation in climate occurred during the time period [1970 — 1991] in which surface waters cooled by 1 °C in the central and western North Pacific and warmed by about the same amount along the west coast of North America from late 1976 to 1988.»

During a 10 - year investigation detailed in the latest issue of the Journal of Geophysical Research, Stanford University scientist Mark Jacobson isolated the widespread warming effects from all sources of soot â $» the visible residue of burned wood, crops, oil, biomass and other fuels â $» from the climate impacts caused by greenhouse gases such as carbon dioxide and methane.

Perhaps it is because during the Obama years, work on climate change issues all started from a mandated conclusion: That manmade global warming was settled science and that it was bad and getting worse.

«These results warn against drawing over-optimistic conclusions from the relatively modest loss of mountain plant populations likely to be observed during the coming decades», says Stefan Dullinger from the University of Vienna, «because the final consequences of climate warming on plant distribution in the Alps will only become realized with a delay of decades or even centuries.»

If ocean oscillations are as powerful a climate driver as the anti-CO2 alarmists claim then this graph suggests a simple story: that cold Pacific surface waters swallowed up a big gulp of warmth from 1940 - 1970, which the PDO then belched back up during its warm - phase in the 80s and 90s.

''... worked with two sediment cores they extracted from the seabed of the eastern Norwegian Sea, developing a 1000 - year proxy temperature record «based on measurements of δ18O in Neogloboquadrina pachyderma, a planktonic foraminifer that calcifies at relatively shallow depths within the Atlantic waters of the eastern Norwegian Sea during late summer,» which they compared with the temporal histories of various proxies of concomitant solar activity... This work revealed, as the seven scientists describe it, that «the lowest isotope values (highest temperatures) of the last millennium are seen ~ 1100 - 1300 A.D., during the Medieval Climate Anomaly, and again after ~ 1950 A.D.» In between these two warm intervals, of course, were the colder temperatures of the Little Ice Age, when oscillatory thermal minima occurred at the times of the Dalton, Maunder, Sporer and Wolf solar minima, such that the δ18O proxy record of near - surface water temperature was found to be «robustly and near - synchronously correlated with various proxies of solar variability spanning the last millennium,» with decade - to century - scale temperature variability of 1 to 2 °C magnitude.»

I learnt in high school geography classes during the mid 1950s that large urban conurbations create their own warmer and wetter climate; has anything changed, apart from an increase in gullibility?

Evidence from ice cores and deep - sea sediment has shown that the Northern climate also cooled before the Southern climate during these abrupt changes, creating a «bipolar seesaw,» with the North cool while the South was warm, and the South cooling as the North warmed.

Related Links: New Paper: Roman & Medieval Warm Periods Were Warmer Than Previously Thought — «A paper published in Nature Climate Change finds prior temperature reconstructions from tree - rings «may underestimate pre-instrumental [pre-1850] temperatures including warmth during Medieval and Roman times.»

http://www.nbi.ku.dk/english/news/news13/greenland-ice-cores-reveal-warm-climate-of-the-past/ «The new results from the NEEM ice core drilling project in northwest Greenland, led by the Niels Bohr Institute at the University of Copenhagen show that the climate in Greenland was around 8 degrees C warmer than today during the last interglacial period, the Eemian period, 130,000 to 115,000 thousand years ago.»

In the Science Advances paper, Cook and his coauthors compare results from the new atlas and its counterparts across three time spans during the generally warm Medieval Climate Anomaly (1000 - 1200), the Little Ice Age (1550 - 1750), and the modern period (1850 - 2012).

«From 1910 - 1949 (pre-agricultural development, pre-DEV) to 1970 - 2009 (full agricultural development, full - DEV), the central United States experienced large - scale increases in rainfall of up to 35 % and decreases in surface air temperature of up to 1 °C during the boreal summer months of July and August... which conflicts with expectations from climate change projections for the end of the 21st century (i.e., warming and decreasing rainfall)(Melillo et al., 2014).&raFrom 1910 - 1949 (pre-agricultural development, pre-DEV) to 1970 - 2009 (full agricultural development, full - DEV), the central United States experienced large - scale increases in rainfall of up to 35 % and decreases in surface air temperature of up to 1 °C during the boreal summer months of July and August... which conflicts with expectations from climate change projections for the end of the 21st century (i.e., warming and decreasing rainfall)(Melillo et al., 2014).&rafrom climate change projections for the end of the 21st century (i.e., warming and decreasing rainfall)(Melillo et al., 2014).»

Apart from colder regions and seasons, characterised by greater internal climate variability, the odds of warm events are found to have significantly increased and temperatures above the threshold of 1 - in - 10 year events during 1961 — 1990 have become at least twice as likely to occur.

This study from Science Online from 2008 titled «Northern Hemisphere Controls on Tropical Southeast African Climate During the Past 60,000 Years» also leaves me wondering about the anthropogenic global warming claim and also seems to back up my thought that CO2 is not driving this.

Over the past 60 years, Alaska has warmed more than twice as rapidly as the rest of the United States, with state - wide average annual air temperature increasing by 3 °F and average winter temperature by 6 °F, with substantial year - to - year and regional variability.1 Most of the warming occurred around 1976 during a shift in a long - lived climate pattern (the Pacific Decadal Oscillation [PDO]-RRB- from a cooler pattern to a warmer one.