Sentences with phrase «medieval warm period in»

Do you think the plague in the 1340s was just coincident with the end of the medieval warm period in europe?

LJAR: it's well - established that there was a Medieval Warm Period in the North Atlantic.

They found that «the Medieval Warm Period in AD 980-1250 is associated with a local maximum in δD, lending support for a significant warming during that time.»

The Medieval Warm Period in AD 980-1250 is the most distinctive climate period in the whole sediment sequence identified by changes in sediment colour, X-ray density, varve thickness, LOI, as well as the isotopic composition of hydrogen in kerogen.

During previous periods of climate change in human history, like the so - called Medieval Warm Period in Europe, or the Little Ice Age, temperature changes were regional, occurring in one location, but not in another.

It's also the medieval warm period in Europe, but that's about to end.

Many «skeptics» seem to want to litigate the medieval warm period in the Steyn and / or Ball cases.

We subsequently address certain examples of this - for example, Mann et al 2009's conclusion that there was no Medieval Warm Period in the northern Tibetan Plateau.

Now let's look at Keigwin's justly famous Sargasso Sea dO18 proxy temperature reconstruction: (1996) «The Little Ice Age and Medieval Warm Period in the Sargasso Sea» Science 274, 1503 - 1508 This isn't meant as a general criticism, however, the reconstructed Sargasso Sea paleotemperature rests on Globigerinoides ruber calcite.

The Medieval Warm Period in Antarctica: How two one - data - point studies missed the target.

Study: Ammonium as ice core proxy shows strong Medieval Warm Period in the tropics.

Medieval warm periods in Europe and Asia with temperatures comparable to those seen in the 20th century were therefore similarly plausible but might have been local phenomena: the report noted «the magnitude and geographic extent of the warmth are uncertain.»

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.

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.

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.

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).

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 rperiod 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 rPeriod» 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.

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

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 EuroPeriod — 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 Europeriod had a huge influence on warfare, and the following cold period broke the back of the hold of the church in Europeriod 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.

... 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.

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).

The point is simply that finding a warmer ocean around the medieval period shouldn't have much weight in debate about relative surface temperatures.

A major person working in the area of climate change and global warming sent me an astonishing email that said «We have to get rid of the Medieval Warm Period.»

Not even the fierce Norse, in the middle of the medieval warming period, are said to have visited Alaska.

It was much hotter in Greenland during the Medieval Warming Period, when Greenland was settled and an extensive agricutural production took place.

In the more recent papers (Mann et al, 2009 for instance), Greenland is already shown as warmer in the medieval period — as are areas in Northern Europe (fig 2), so why you think that Vinther et al will affect these these materially is uncleaIn the more recent papers (Mann et al, 2009 for instance), Greenland is already shown as warmer in the medieval period — as are areas in Northern Europe (fig 2), so why you think that Vinther et al will affect these these materially is uncleain the medieval period — as are areas in Northern Europe (fig 2), so why you think that Vinther et al will affect these these materially is uncleain Northern Europe (fig 2), so why you think that Vinther et al will affect these these materially is unclear.

This article is especially important in light of the charge that MBH got rid of the Medieval Warm Period.

Well, warm periods have occured in the past, and if not the medieval period, then probably the last interglacial (120,000 years ago), certainly the Pliocene (3 million years ago), without question the (Eocene 50 million years), and in particular the Paleocene - Eocene Thermal Maximum (55 million years ago), and so on.

In 1998, Willie Soon and Sallie Baliunas of the Harvard - Smithsonian Center for Astrophysics published a paper in the journal Climate Research, arguing that there really had been a Medieval warm perioIn 1998, Willie Soon and Sallie Baliunas of the Harvard - Smithsonian Center for Astrophysics published a paper in the journal Climate Research, arguing that there really had been a Medieval warm perioin the journal Climate Research, arguing that there really had been a Medieval warm period.

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 ocmedieval 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 ocMedieval Warm Period «was obviously warmer than the current climate (and by implication that human - caused global warming is not occuring).