Sentences with phrase «warm periods of»

We are getting the extra snow that always falls during the warm periods of the past ten thousand years and Global Warming is at or near the peak, similar to the Medieval Warm period and all the other warm periods of the past ten thousand years.
Sea Ice Levels are much like they were in the many warm periods of the past ten thousand years.That is how it works.
I recently gave a talk about the powerful relationships among various co - factors including seasonal sunlight, seasonal temperature change, sea level, and even tectonic activity that extends back to the bipolar Quaternary ice - ages and interglacial warm periods of last 2.6 million years.
The warm periods of the past ten thousand years define the upper bound of temperature.
For the past 2.5 million years, the earth has been in a cold period with lengthy ice ages, interrupted by brief warm periods of 10,000 years or so.
Climate reconstructions for the warm periods of the Cenozoic also provide an opportunity to assess Earth - system and equilibrium climate sensitivities.
When confronted with a contrarian who argues that somehow global warming isn't taking place, I would point to the Arctic sea ice and glaciers — which have even lasted through the warm periods of the past two thousand years — and probably well before.
Living in Miami, we experience warm periods of weather at any time, so kittens and puppies here are born throughout the year.
This expected large sea - level rise does of course not surprise us paleoclimatologists, given that in earlier warm periods of Earth's history sea level has been many meters higher than now due to the diminished continental ice cover (see the recent review by Dutton et al. 2015 in Science).
And through detailed studies of the local physics of ice - sheet changes and more refined reconstructions of ice - sheet changes during warm periods of the geological past, scientists may become able to distinguish between the two roads sooner.
The nutritional diversity of these sites allowed hominins to colonise the Atlantic fringe of north west Europe during warm periods of the Pleistocene.
The surge in melt events corresponds to a summer temperature increase of at least 1.2 - 2 degrees Celsius (2.2 - 3.6 degrees Fahrenheit) relative to the warmest periods of the 18th and 19th centuries, with nearly all of the increase occurring in the last 100 years.
Additionally, the decade was at least one - half degree Fahrenheit warmer today than the warmest periods of that 11,000 - year time frame, even counting for uncertainties, Shuman says.
These remains confirm that the deposits date to a warm period of climate around 420,000 years ago, the so - called Hoxnian interglacial, when the climate was probably slightly warmer than the present day.
Thus, factors shaping the climate during the relatively warm period of the Late Pleistocene are probably doing much the same today.
In 1975 a strong warming trend began and in 1988 James Hansen went to Congress and made a big deal about a warming period of just 13 years.
I can not find any contemporary reports of climate scientists condemning him for make long term conclusions about climate change based on a warming period of just 13 years.
You provide no evidence of some substantial increase in volcanic and / or earthquake activity in the global warming period since 1900, or the more recent global warming period of since 1970.
So, we might have been past the warmest period of this most recent interglacial, and beginning a slow, multi-thousand year descent into a new ice age — until we changed the atmospheric composition.
Remember that in the 1970's the entire world climate science community agreed that we were heading for another ice age based on a warming period of over 30 years.
This would have shown that the 1940s was the warmest period of the 20th century, and that there had been very slight cooling post the 1940s.
I won't make too much of my usual argument on the sun, except to say that the Sun has been substantially more active during the warming period of 1950 - 2000 than it has been in other times.
For example, during the «Holocene thermal maximum,» the warmest period of the past 10,000 years, the Arctic average temperature was two to three degrees warmer than it is today, while the global average was only a degree or so warmer.
The Midieval warm period is cooler than the Roman warm period of 2000 years ago.
The modern warm period is cooler than the Midieval warm period of 1000 years ago.
Well the devil is in the details — further, if we are to be convinced by the AR5 attribution of what is essentially a strong warming period of 30 years, then unexplained periods temperature variability of 30 years are significant.
If the fossil remains had been exposed during earlier warm periods they would most likely have decomposed, depending on the duration of the warm period of course.
This would be manifested in drift to more El Nino events during warmer periods of reduced cloud cover and La Nina events during cooler periods of increased lower tropospheric cloud cover.
There are peer - reviewed studies by over 750 scientists from over 450 research institutions in over 40 countries that have found a Medieval Warm Period of between 0.1 Â ° and 3.2 Â ° Celsius warmer than today in every corner of the globe - from Alaska to South Africa, Morocco to New Zealand, Bolivia to China, Egypt to New Guinea... Everywhere they look for it, they find it.
Greenland temperature variability is high and there is evidence during the late Medieval Warm Period of a warm period in year 1150, that is 862 years before present (Kobashi et al. 2011).
The reports also states that the Medieval Warm Period of approximately 1,000 years ago was both «global and warmer than today's world.»
«I don't think this warming period of the last 30 years can keep on going,» he says.
Could it be that you wished to cherry - pick the warming period of ca1970 to 1998?
When the data do not help, Innuit studies do: «The traditional knowledge of native peoples, passed down through generations, is no longer valid» Is there an Innuit saga on the warm period of Greenland 1000 years ago, when the Vikings settled there?
Furthermore, much evidence indicates that today's warm temperatures remain below peak temperatures experienced during the Medieval Warm Period of 1,000 years ago, the Roman Warm Period of 2,000 years ago and the Holocene Climatic Optimum of 5,000 years ago.
Granted, the «great climate shift» of 76 - 77 occurred as well about this time, and many would say that warm period of the PDO is really the caused of the warming in the late 20th century, but it would be interesting to hear your rationale for choosing the early 1950's as the beginning of your measurement period for looking for anthropogenic effects, as from 1950 to about 1980, we have no need of an anthropogenic explanation, as the length of the solar cycle can fit the temperature curve quite well.
One exception to this occurred during the Medieval Warm Period of 1100 — 1200 A.D., when warm conditions similar to today's climate caused the sea level to rise 5 — 8 ″ (12 — 21 cm) higher than present (Grinsted et al., 2008).
Sure, parts of Greenland were probably greener during warmer periods of our planet's history than they are now.
The highest global sea level of the past 110,000 years likely occurred during the Medieval Warm Period of 1100 — 1200 A.D., when warm conditions similar to today's climate caused the sea level to rise 5 — 8 ″ (12 — 21 cm) higher than present.
We already know we can soldier on through a warm period of the MWP variety so maybe that's the only lesson there — as Gavin says, not that interesting.
What has happened during every warm period of the past ten thousand years is happening again.
â $ œIâ $ ™ d rather have long life and great cathedrals than cold, disease and famine, â $ he said, comparing the colder Dark Ages to the 300 - year warming period of the Middle Ages.
Our recent study in Nature Geoscience reconstructed conditions at the Antarctic coast during a warm period of Earth's history.
Re # 37: «Melankovitch cycles also influence warming, not just cooling, and we are in a warming period of the cycles.»
Other problems include that the first Set was done in the cold period from 1940 to 1975 the second in the warmer period of the 1990s.

Not exact matches

You need to follow up with warm and even cold - that - may - warm prospects consistently and frequently for an extended period of time.
During the first third of the year, from January through April, the average temperature for the contiguous United States was 4 degrees Fahrenheit above the 20th - century average, making this period the second warmest on record, according to the National Oceanic and Atmospheric Administration.
Sevigny said as social media continues to increase its presence with public commentary on matters such as Question Period — which doesn't just rely on mainstream media for coverage anymore in a sea of tweets — it may lead to a change in behaviour of MPs as they attempt to come across in a warmer light to a broader reporting audience.
There was no explanation of why both the medieval warm period and the little ice age, very clearly shown in the 1990 report, had simply disappeared eleven years later.
There is no evidence for significant increase of CO2 in the medieval warm period, nor for a significant decrease at the time of the subsequent little ice age.
a b c d e f g h i j k l m n o p q r s t u v w x y z