The findings challenge the idea that the bears adapted very quickly, but confirm that they have made
it through warming periods and loss of sea ice before.
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.
What do you say about the fact that Mars, as well as other planets, have been going
through a warming period very similar to ours?
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.
The AO was positive right
through the warming period.
Not exact matches
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.
Florida's average temperature from January
through April 2017 was the
warmest during that
period on record.
Many women who are initially opposed to the idea
warm up to it as they are going
through menopause and find that life doesn't have to end when their
periods do.
Depending on the circumstances, contact with babies is limited to short
periods of being held, and sitting beside the incubator (the see -
through box that keeps babies
warm and surrounded by clean, humid air).
Perhaps extra carbon dioxide from a
period of heightened seafloor eruptions eventually percolates
through the ocean and into the atmosphere, allowing
warming that would deliver a coup de grâce to the massive ice sheets.
«We found compelling evidence that invasive shrubs, such as Japanese barberry, are ready to leaf out quickly once they are exposed to
warm temperatures in the lab even in the middle of winter, whereas native shrubs, like highbush bluberry, and native trees, like red maple, need to go
through a longer winter chilling
period before they can leaf out — and even then their response is slow,» says Amanda Gallinat, a second - year graduate student and third author of the paper.
Still, dramatic climate swings were not terribly unusual during this
period in Earth's history, and the Patagonian megafauna had made it
through several
warm periods before the one that finally did them in.
The sediment cores used in this study cover a
period when the planet went
through many climate cycles driven by variations in Earth's orbit, from extreme glacial
periods such as the Last Glacial Maximum about 20,000 years ago, when massive ice sheets covered the northern parts of Europe and North America, to relatively
warm interglacial
periods with climates more like today's.
Once released
through combustion, it remains in the atmosphere for hundreds, even thousands, of years and continues its job as a driver of global
warming over a long
period of time.
The researchers suggested this could be accomplished
through making
warm - up
periods more vigorous, having more frequent and longer practices of dance moves and including a segment of vigorous exercise in each class to improve fitness.
They occurred as the planet cycled
through cold and
warm periods linked to changes in its orbit around the sun.
So
warm, in fact, that the December -
through - February
period came in as fourth -
warmest winter on record for the Lower 48 states.
Ice sheet models can be run
through many glacial cycles (i.e. cold glacial
periods and
warm interglacial
periods).
Secondly, the Arctic's temperatures actually plunged dramatically from the
warm 1920s - 1940s
period all the way
through to the mid-1990s.
Carozza et al (2011) find that natural global
warming occurred in 2 stages: First, global
warming of 3 ° to 9 ° C accompanied by a large bolus of organic carbon released to the atmosphere
through the burning of terrestrial biomass (Kurtz et al, 2003) over approximately a 50 - year
period; second, a catastrophic release of methane hydrate from sediment, followed by the oxidation of a part of this methane gas in the water column and the escape of the remaining CH4 to the atmosphere over a 50 - year
period.
I recently looked
through the arguments on the Medieval
warm period business over at «co2science.org» — here's the link, though I hesitate to give it any more publicity:
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.
Since NOAA began keeping records in 1880, the combined global land and ocean surface temperature was the
warmest on record for both April and for the
period from January
through April in 2010.
A
warming climate encourages wildfires
through a longer summer
period that dries fuels, promoting easier ignition and faster spread.
I live in North Jersey... However, the car I was looking for was in Philadelphia (about 130 miles away)... Loreal new this and called me the day I was... coming down... She wanted to let me know there was a scratch on the windshield... I was impressed with that because, she was more concerned with me traveling over 250 miles (both ways) than making her sale... Regardless, when I arrived and met Loreal, she was informative, friendly and greeted me with a
warm friendly smile... What surprised me was this continued throughout the process... Loreal, was very accommodating and every concern I had, She guided me
through this... I realize this is only the «honeymoon»
period of having this car....
coming down... She wanted to let me know there was a scratch on the windshield... I was impressed with that because, she was more concerned with me traveling over 250 miles (both ways) than making her sale... Regardless, when I arrived and met Loreal, she was informative, friendly and greeted me with a
warm friendly smile... What surprised me was this continued throughout the process... Loreal, was very accommodating and every concern I had, She guided me
through this... I realize this is only the «honeymoon»
period of having this car....
They have been
through three ice ages and the global
warming periods that followed.»
Prevention of these injuries involves maintaining your dog's physical conditioning
through adequate exercise,
warm - up
periods prior to performance events such as agility and common sense (think about what you would do for yourself).
If you look back 12 months, the
period from June 2011
through May 2012 was the
warmest 12 - month block since records started to be kept more than a century ago.
The Sea of Cortez liveaboard season runs from August
through November which is the
warmest period.
[ANDY REVKIN responds: I daresay I've brought Dr. Hansen's research and conclusions as much or more publicity over the course of his career than any other science writer, starting with a 6,000 - word cover story on global
warming in Discover Magazine in 1988 that opened with his Senate testimony and continuing
through the
period when political appointees at NASA tried to stop him from speaking out.
If you want to assume that aerosols resulting from pollution produced by the burning of fossil fuels were responsible for the cooling evident from 1940
through the late 70's, then you have no reason to claim ANY degree of
warming due to CO2 forcing during any earlier
period.
Benestad, tell them when Halvdan Svarte went
through the ices and drowned in Røykenviken Randsfjorden With horses and men in the
warm mideival
period and thus decided the SAGA.
I particularly enjoyed the slides that, when combined (1) provided an overview of hotter and cooler CO2 molecules as it relates to how they are seen from outer space and from profile — because this will make it easier for me to explain this process to others; (2) walked
through the volcanic and solar activity vs assigning importance to CO2 changes — because this another way to help make it clearer, too, but in another way; (3) discussed CO2 induced
warming and ocean rise vs different choices we might make — because this helps point out why every day's delay matters; and (4) showed Figure 1 from William Nordhaus» «Strategies for Control of Carbon Dioxide» and then super-imposed upon that the global mean temperature in colors showing pre-paper and post-paper
periods — because this helps to show just how far back it was possible to make reasoned projections without the aid of a more nuanced and modern understanding.
Fossil evidence is cementing the idea that the species is at least 200,000 years old or more (meaning it's been
through substantial
warm periods).
[Added Dec. 31, 9:00 a.m. In mid November, he made a prediction, posted on the National Science Foundation website, that the
period from December
through February would see unusual cold in the east, as the west remains
warm given the power of this ElNiño.]
Since a commenter mentioned the medieval vineyards in England, I've been engaged on a quixotic quest to discover the truth about the oft - cited, but seldom thought
through, claim that the existence of said vineyards a thousand years ago implies that a «Medieval
Warm Period «was obviously
warmer than the current climate (and by implication that human - caused global
warming is not occuring).
For instance: When did King Halvdan Svarte plunge
through the ice of Randsfjorden with horses and all his men in the
warm mideival
period?
They do go down a bit (to the mid 270's ppm) right
through 1600 and 1700's so these tiny changes do seem to correlate a bit with the
warm and cool
periods possibly.
If the planet's climate were changing solely because that's what planets do, evolve
through different climatic
periods of
warming and cooling over millions of years, adverse consequences like the loss of coral reefs and the potential for disappearing Polar Bears would still be undeniably sad, but at least a little easier to swallow.
The paper also finds that several significant past climate fluctuations — including a
warm spell that peaked around 1100 A.D. called the medieval
warm period and the so - called little ice age from the 1400s
through the 1700s — were global in scope.
The
warming period from about 1920 — 1950 has been attributed to a combination of greenhouse gases (which were increasing
through the
period to some extent), solar changes, and unusually low volcanic activity.
Under the Web site headline «Global
Warming «May Cut Deaths,»» it reported 20,000 deaths are linked to the cold each year in the U.K. and that those deaths fell 3 % a year from 1971
through 2003, a
period in which summers
warmed but heat - related deaths did not change.
The paper summarizes findings that strongly imply the Greenland ice sheet was in pretty good shape
through a very
warm period centered around 125,000 years ago, the Eemian.
wmar (3) wrote «All
through human history we and society thrived in the
warmest periods and suffered in the coldest.»
The month of April, and the stretch from January
through April, were both the
warmest such
periods in the instrumental record, according to the latest analysis by the National Oceanic and Atmospheric Administration.
In the real world the most obvious and most common reason for an increase in the speed of energy flow
through the system occurs naturally when the oceans are in
warm surface mode and solar input to the oceans due to reduced global albedo is high as apparently occurred during the
period 1975 to 1998.
he shows that co2 reached a level of 450 ppm in 1942; due to the
warming in the
period 1920
through 1940 plus the co2 output of world war 2; climbing from 320 ppm in 1920 and returning to 330 ppm in the 50's.
«If the surface temperature resumed the
warming rate that we observed from, say 1977
through 1998, we would still go close to a quarter of a century without significant net
warming because there's such a long flat
period built into the record now.
«At the end of the last ice age around 11,000 years ago, the ice sheet went
through a
period of rapid, sustained ice loss when changes in global weather patterns and rising sea levels pushed
warm water closer to the ice sheet — just as is happening today,» NASA said.