Sentences with phrase «in medieval warm»

We can compare the temperature and Albedo in a Medieval Warm period to the temperature and Albedo in a Little Ice Age and we will have a valid experiment that we can compare to modern time.

(Part of the How to Talk to a Global Warming Skeptic guide) Objection: It was just as warm in the Medieval Warm Period (MWP) as it is today.

(Part of the How to Talk to a Global Warming Skeptic guide) Objection: Newfoundland was so warm in the Medieval Warm Period that when the Vikings landed they called it Vineland and brought boatloads of grapes back to Europe.

Just like happened in the Roman warm period and in the Medieval warm period.

that takes in the Medieval Warm Period & the Little Ice Age.

Objection: It was just as warm in the Medieval Warm Period (MWP) as it is today.

This time, the colour scale matches exactly the colour scale used in the Medieval Warm Period figure.

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).

Every time I hear that explanation that less sea ice means arctic air can move south I think «Damn, it must have been cold in the Medieval Warm Period».

Why had Lord Monckton said that we could learn about temperatures in the medieval warm period from the foraminifera on the ocean floor, when the resolution was surely too poor?

The glaciers are retreating back to where they were in the Medieval Warm Period (MWP), and their retreat is revealing human settlements that existed in the MWP.

The arctic opened and replenished the ice and it got cold, polar oceans froze, snowfall diminished and ice depleted until it got warm in the medieval warm period.

BobC @ 55 — ``... 500 - 800 years ago puts us in the Medieval Warm Period.

Place yourself at about this temperature in the Medieval Warm Period or the Roman Warm Period and look 30, 50, 100 years beyond and that will be closer than any other model.

Well, maybe there's an element of natural variability in the global climate that doesn't care about your SUV any more than it did back in the medieval warm period.

Go back 800 years and you find yourself... in the Medieval Warm Period.

Posted in Medieval Warm Period, Natural Oceanic Oscillations, Paleo - climatology, Scepticism 56 Responses

This view on historic temperatures, particularly in the Medieval Warm Period, has been reversed by a number of more rigorous studies.

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.

The global temperature anomaly certainly shows an increase since systematic thermometer records began in the tail end of the period of extreme cold known as the «little ice age», but just as in the medieval warming period, local temperature series need not correspond to the global trend.

Not exact matches

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.

During the Medieval Climate Anomaly (MCA), Europe basked in balmy weather, and some claim that whatever natural mechanism caused it is warming the world today.

For example, if a proxy record indicated that a drier condition existed in one part of the world from 800 to 850, it would be counted as equal evidence for a Medieval Warming Period as a different proxy record that showed wetter conditions in another part of the world from 1250 to 1300.

In contrast, the consensus view among paleoclimatologists is that the Medieval Warming Period was a regional phenomenon, that the worldwide nature of the Little Ice Age is open to question and that the late 20th century saw the most extreme global average temperatures.

Dubbed the «Medieval Warm Period,» it was the last time before the present that agriculture could flourish in Greenland.

Rather than trying to airbrush this bump in the 1940s and trying to get rid of the medieval warm period — which these hacked e-mails illustrate — we need to understand them.

«It confirms that the during the Medieval Warm Period between 1080 and 1430 the oscillation index was in an unusually prolonged positive phase, which brings increased rain to Scotland and drier conditions in the western Mediterranean,» says Baker, of the UNSW Connected Waters Initiative Research Centre.

The scientists examined bat guano from a cave in northwestern Romania to produce new insight into how the climate in east - central Europe has changed since the Medieval Warm Period, about 850 AD.

The medieval warm was not a global event, was probably not synchronous even in the Northern Hemisphere, and was probably not as warm as we are now — and certainly was not as warm as we'll be in 2100 if CO2 continues to increase.

But there were countless warm periods in the past that resulted from quite different conditions than those prevailing today (see this link on the Medieval period, or this link on the «mid-Holocene» period).

Villalba (1994) «Tree Ring and Glacial Evidence for the Medieval Warm Epoch and the Little Ice Age in Southern South America» Climate Change 26, 183 - 197.

The best place to start is our glossary entry on the «Medieval Warm Period» (due to a glitch we are in the process of trying to fix, most of our glossary items are currently not showing up in the «Glossary» page link).

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.&raquIn 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.&raquin 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.&raquin relatively cold climates.»

The reason I was mentioning the Medieval Warm Period and the Little Ice Age (if they even existed) as important to me was that we have seen some wild fluctuations in the earth's temperature in those periods while the CO2 atmospheric concentrations was a «constant».

A confounding factor in discussions of this period is the unfortunate tendency of some authors to label any warm peak prior to the 15th Century as the «Medieval Warm Period» in their recwarm peak prior to the 15th Century as the «Medieval Warm Period» in their recWarm Period» in their record.

The simple question of whether the medieval period was warm or cold is not particularly interesting — given the uncertainty in the forcings (solar and volcanic) and climate sensitivity, any conceivable temperature anomaly (which remember is being measured in tenths of a degree) is unlikely to constrain anything.

As alluded to in our post, one important issue is the possibility that changes in El Nino may have significantly offset opposite temperature variations in the extratropics, moderating the influence of the extratropical «Little Ice Age» and «Medieval Warm Period» on hemispheric or global mean temperatures (e.g. Cobb et al (2003).

Indeed, the main quandary faced by climate scientists is how to estimate climate sensitivity from the Little Ice Age or Medieval Warm Period, at all, given the relative small forcings over the past 1000 years, and the substantial uncertainties in both the forcings and the temperature changes.

As a engineering doctorate (with an early minor in history), I was dumbfounded by the lack of the Medieval Warm Period — the warm period had a huge influence on warfare, and the following cold period broke the back of the hold of the church in EuropeWarm Period — the warm period had a huge influence on warfare, and the following cold period broke the back of the hold of the church in Europewarm period had a huge influence on warfare, and the following cold period broke the back of the hold of the church in Europe....

In his seminal 1982 book Climate, History, and the Modern World, the renown climatologist Dr. H.H. Lamb revealed that sea ice in the subarctic and Arctic regions was much less extensive during the Medieval Warm Period (9th - 13th centuries) compared to todaIn his seminal 1982 book Climate, History, and the Modern World, the renown climatologist Dr. H.H. Lamb revealed that sea ice in the subarctic and Arctic regions was much less extensive during the Medieval Warm Period (9th - 13th centuries) compared to todain the subarctic and Arctic regions was much less extensive during the Medieval Warm Period (9th - 13th centuries) compared to today.

See this, p. 11, where Lindzen writes: «Not surprisingly, efforts were made to get rid of the medieval warm period (According to Demming [sic], 2005, Jonathan Overpeck, in an email, remarked that one had to get rid of the medieval warm period.

Notably, both the decline in sea level and the decline in temperature occurred during the so - called European «Medieval Warm Period,» providing additional evidence that the «Medieval Warm Period» and «Little Ice Age» were not globally synchronous phenomena.

For example, bristlecone pines are known to be CO2 fertilized, creating a possible confounding problem if they are used in temperature reconstructionA figure from Mann's own website suggested that the medieval warm period reappeared if bristlecone pines were excluded from the reconstruction.

The data showed that while the latter continent saw a temporary warm period in medieval times, central Asia most likely didn't.

Evidence for regional warmth during medieval times can be found in a diverse but more limited set of records including ice cores, tree rings, marine sediments, and historical sources from Europe and Asia, but the exact timing and duration of warm periods may have varied from region to region, and the magnitude and geographic extent of the warmth are uncertain.

They find a distinguishable Medieval Warm Period and Little Ice Age in the record.

Because they feed in Arctic and subarctic benthic environments, gray whales are thought to be relatively sensitive to changes in climate, and climatic events such as the Medieval Warm Period (ca. 900 — 1200 AD) or Little Ice Age (ca. 1300 — 1850 AD) could have caused a population decline.

The medieval Old Town, with its labyrinth of alleyways and buildings built in warm honey - coloured stone, is virtually unchanged since the Middle Ages.

... Continental - scale surface temperature reconstructions show, with high confidence, multi-decadal periods during the Medieval Climate Anomaly (950 to 1250) that were in some regions as warm as in the mid-20th century and in others as warm as in the late 20th century.

The email below recently came in and I > > googled «We have to get rid of the warm medieval > > period» and «Overpeck» and indeed, there is a > > person David Deeming that attributes the quote to > > an email from me.