Sentences with phrase «year climate optimum»

Not exact matches

To the surprise of everyone who knew about the strong evidence for the little ice age and the medieval climate optimum, the graph showed a nearly constant temperature from the year 1000 until about 150 years ago, when the temperature began to rise abruptly like the blade of a hockey stick.

During what geoscientists called the Miocene Climate Optimum, roughly 15 million years ago when temperatures and CO2 levels were higher than today, the reefs around the Maldives atolls were flourishing.

The Holocene Climate Optimum was a period of global climate warming that occurred between six to nine thousand yeaClimate Optimum was a period of global climate warming that occurred between six to nine thousand yeaclimate warming that occurred between six to nine thousand years ago.

Gran Canaria has optimum conditions for producing solar energy, due to the consistently warm climate throughout the year.

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.

Second, the warming following the end of the last glaciation peaked 8000 to 6000 years ago at what is known as the Holocene Climate Maximum (or Optimum in some sources).

[Response: The period 8K years ago (sometimes referred to in a value - laden way as the «climatic optimum») is not a good analogy for what goes on in a doubled CO2 climate.

spalding craft (2)-- Actually, there is an overwhelming abundance of evidence that the climate warmed to a maximum, so - called optimum, temperature at different times in different regions, but about 8 — 6 thousand years ago; it had been cooling, on average since until humans started added considerable quantities of global warming (so - called greenhouse) gases started in, say, 1850 CE.

And the Holocene Climate Optimum, which prevailed from 10,000 to 6000 years ago, was warmer than the present for four millennia (subject to a brief dip in the middle).

And a really big warming period: «The Holocene Climate Optimum (HCO) was a warm period during roughly the interval 9,000 to 5,000 years B.P..

And a world climate that compared to the [British and North Sea] climate of 800 and 900 years ago was like, we really do live in a time of an extraordinarly placid climatic optimum.

From the Younger Dryas to the Optimum just eight thousand years back... now that really was climate change.

I am pretty sure that the MWP was at least as warm and maybe even warmer than today, as good as the Roman WP was warmer and the Holocene Climate optimum of 6,000 years ago was warmer... The MWP had a CO2 level about 6 ppmv higher than the LIA, that is all you can expect as increase in the atmosphere from the current warm period.

We know the effects of a warmer climate: during the past 10,000 years, human civilizations have prospered during the warmer Holocene Climate Optimum (7,000 to 3,000 BC) and the Medieval Warm Period (800 to 13climate: during the past 10,000 years, human civilizations have prospered during the warmer Holocene Climate Optimum (7,000 to 3,000 BC) and the Medieval Warm Period (800 to 13Climate Optimum (7,000 to 3,000 BC) and the Medieval Warm Period (800 to 1350 AD).

Current GCM models may have realistic - seeming weather patterns, but are totally incapable of producing phenomena that look like the Holocene (Little Ice Age, Medieval Warm Period, Roman Warm Period, Holocene Optimum, the steady decline of temperature on average over the last 3,000 years, etc.) The Climate Science community has, instead, taken the path of trying to claim that these swings didn't occur (Michael Mann's «Hockey Stick», etc.) This does not give me a lot of confidence in the rest of their «science».

Looking at the first number — 408 parts per million CO2 — we find that the last time global levels of this potent heat - trapping gas were so high was during the Middle Miocene Climate Optimum of 15 - 17 million years ago.

The Northern Hemisphere was substantially warmer than the present for thousands of years during the Holocene Climate Optimum (~ 5,000 - 9,000 years ago).

It has been warmer than the present for much of the ten thousand years since the last big ice age: it was a little warmer for a few centuries in the medieval warm period around 1100 (when Greenland was settled for grazing) and also during the Roman - Climate Optimum at the time of the Roman Empire (when grapes grew in Scotland), and at least 1 °C warmer for much of the Holocene Climate Optimum (four to eight thousand years ago).

In a globe that is for the most part too cold to support photosynthesis at optimum levels, except for fractional parts of the year you (i.e. climate scientists) should begin by asking which parts are too warm and which parts too cool and focus on the bits that you consider too warm.

In a recent review of Holocene climate variability (Part A, and Part B) it was shown that Milankovitch forcing was likely the primary driving force behind the general climate evolution from the Holocene Climatic Optimum to the Neoglacial period, for the past 12,000 years.

-- Romanian Warm Period about 2000 years ago — Medieval Warm Period with a climate optimums about 1000 years ago — Little Ice Age from 15th to mid-19th century.

The 300 years of Viking settlements in Greenland during the Medieval Warm Period and viniculture in Britain suggested a warmer world in earlier times than at present while the colder Dark Ages separate the MWP from the Roman Climate optimum.

We do not know enough to determine under what circumstance CO2 is a forcing or a feedback relative to temperature sometimes it maybe both sometimes over large areas it may even be a coolant e.g. if you think it is the main driver (which I don't) you would have to say it acted as a coolant for several thousand years from the Holocene climate optimum to the LIA — see Fig 6 in the last post at http://climatesense-norpag.blogspot.com I quoted the end Permian Siberian traps as a possible example of CO2 as a forcing but even here CO2 was rising rapidly before the volcanic event.

Also, RGB at Duke would scold R.Gates for making the «schtick» «First, the climate now is not warmer than it was in the Holocene Optimum (do not make the mistake of conflating the high frequency, high resolution «2004 ″ data point with the smoothed low frequency, low resolution data in the curve — even the figure's caption warns against doing that — for the very good reason that in every 300 year smoothed upswing it is statistically certain that the upswing involved multidecadal intervals of temperatures much higher than the running mean.

Case in point: «Perhaps Ray would like to explain why he considers «now» (or whenever in the last 250 years) to be the ideal or optimum climate for the entire planet?»

Look for the articles on the MWP, Holocene climatic optimum, Greenland, glacial cycles, solar influences, «100 years is not enough» and «climate is always changing».