We had a high water stand around 1600 and should expect another one during
the latest warming period.
Most geologists don't dare predict earthquakes, although they should try, climatologists have predicted
this latest warming period, geologists are more paleo - climate experts than AGW..
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.
They'd seen slowdowns in the past, often associated with natural cycles in the Earth's climate — England pointed to
periods when the Earth has taken a break from
warming, such as from 1945 to the
late 1970s.
At last week's meeting here of the Society of Vertebrate Paleontology, another team of U.S. - based researchers looked at a slightly
later but somewhat less severe
warming period, which happened about 53 million years ago.
Closer to the poles the emergence of climate change in the temperature record appeared
later but by the
period 1980 - 2000 the temperature record in most regions of the world were showing clear global
warming signals.
At approximately 90 million years old, the bird fossils are among the oldest avian records found in the northernmost latitude, and offer further evidence of an intense
warming event during the
late Cretaceous
period.
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.
The
warmest period occurred in the
late 20th century — too short to meet Soon and Baliunas's selected requirement.
Thus, factors shaping the climate during the relatively
warm period of the
Late Pleistocene are probably doing much the same today.
The public, press and policy makers have been repeatedly told that three claims have widespread scientific support: Global temperature has risen about a degree since the
late 19th century; levels of CO2 in the atmosphere have increased by about 30 % over the same
period; and CO2 should contribute to future
warming.
In his Figure 5 under a section entitled «A New Northern Hemisphere Summer Temperature Record» he shows that the mid to
late 20th century temperature as determined from tree ring analysis is far
warmer than any
period in the past that his analysis includes (this only goes back to 1400 AD).
For the
late 20th century, a
period of strong greenhouse gas increases, but with diminishing solar influence, variability in ocean
warming shown in the profiles falls much further still.
Scientists have unearthed a new bird species from fossils in the Canadian Arctic dating back about 90 million years, making them the oldest records of avian species found so far north and suggesting an intense
warming event occurred during the
late Cretaceous
period.
The contiguous U.S. had its
warmest January - to - June
period since records began in the
late 19th century.
He said that using an earlier baseline
period would have better captured all the
warming that has occurred, as there was some small amount already in the
late 19th century.
«Near the end of the previous
warm period (
Late - Eemian) when the sea level was +5 to +9 meters higher than today, persistent long
period long wavelength waves 30 meters high battered the Bahamas coastline.
The public, press and policy makers have been repeatedly told that three claims have widespread scientific support: Global temperature has risen about a degree since the
late 19th century; levels of CO2 [carbon dioxide] in the atmosphere have increased by about 30 percent over the same
period; and CO2 should contribute to future
warming.
During lunch
period on a
warm late spring day, she decided she was too pale and headed out to the athletic field to catch some rays at lunch.
On the other end of the summer, we will occasionally get a
warm spell in
late September or early October, so the November pill works backwards and takes care of that time
period.
I've noticed of
late that there is a revival amidst the indie scene that is a
warm welcome in this retro - fusion
period of gaming.
... 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 continued forcing from CO2 over this
period is substantial, not to mention «
warming in the pipeline» from
late 20th century increase in CO2.
What is shockingly ill - advised to me is that the Pielke and McIntyre projections both required, in order to fit with their hoped for story line, that the adjustments not only affect the
period from 1945 to 1960, but also extend beyond that into the
late 90s, in order to level the more recent temperature increases so as to both make the rate appear less dramatic and the amount of recent, CO2 forced
warming less of a concern.
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.
The fact remains that the rate of
warming in the early 20th century is comparable to that in the
late 20th century whether you look at the Arctic in isolation or the globe as a whole and since CO2 levels were markedly different in the 2
periods there must be another significant factor.
The
late Medieval
warm period is called a climatic optimum for a good reason.
If we consider the
period of
warming from the mid to
late»60s then a
warmer troposphere in 1979 should not be surprising.
Most proxy - only reconstructions show the mid-20th century (not
late) to be the
warmest period — which we know, according to surface temperature observations, is incorrect.
Looking at just recent history we have the Roman
Warm Period around the 1st century, 500 years
later the dark ages (massive crop failures and starvation), another 500 years the Medieval
Warm Period and 500 years
later the Little Ice Age.
I find it interesting that at that time the projections were for more
warming than
later iterations of the IPPC... but the alarmism during the same
period has increased.
Fair enough, but two points are clear — the two
warm periods reconstructed — Medieval and
late 1700s are > 0.6 C cooler than recent NH anomalies of around 1C CRU], which means that while the details differ, McIntyre's plot is fully consistent with the conclusion of Mann et al 2008 that recent warmth is unprecedented for 1,000 years or more.
During many of those
periods such as the
late Devonian die off there were indeed changes we today would call global
warming.
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.
However, until the
period of
warming in the
late 1980s, it was a minor player in the lake food chain.
Over the preceding
period the humanity has had much time to adjust to new circumstances and modest additional
warming before
later cooling may be of little significance.
The six - month
period from January to June was the
warmest half - year on NASA's global temperature record, with an average temperature that was 1.3 degrees Celsius (2.4 degrees Fahrenheit)
warmer than the
late nineteenth century.
a) Our models can not explain the early 20th century
warming period b) We know that the (statistically indistinguishable)
late 20th century
warming was caused principally by human - caused forcing.
A feature of the
warming period in the
late 1980s and 1990s was farmers planting crops earlier.
From Climate Change Dispatch Peter Ferrara — Forbes Blogs — February 24, 2014 If you look at the record of global temperature data, you will find that the
late 20th Century
period of global
warming actually lasted about 20 years, from the
late 1970s to the
late 1990s.
The satellite temperature difference for those two
periods show that the
later period was 0.27 °C
warmer.
â $ œThe
late Holocene records clearly identify Neoglacial events of the Little Ice Age (LIA) and Medieval
Warm Period (MWP).
Earth and Planetary Science Letters Volumes 325 — 326, 1 April 2012, Pages 108 — 115 An ikaite record of
late Holocene climate at the Antarctic Peninsula This ikaite record qualitatively supports that both the Medieval
Warm Period and Little Ice Age extended to the Antarctic Peninsula.
The last «spurt» was from ~ 1910 to ~ 1944, over which
period it
warmed 0.53 C («statistically indistinguishable» from the
late 20thC
warming cycle, according to Phil Jones)..
There seems to have been a
period of global
warming during the 1910s - 1940s, and before that, a
period of global cooling during the
late 19th century.
In our papers studying weather station records, we found that global temperatures have alternated between relatively cool and relatively
warm periods roughly every 30/40 years since at least the
late 19th century.
There are multiple lines of evidence that suggest that temperatures (at any rate in the Northern Hemisphere) are no
warmer today than they were back in the
late 1930s / early 1940s, notwithstanding that during this
period some 95 % of all manmade CO2 emissions have taken place.
As the start date pushed into October from the
late 1400s so Europe entered a
period known as the Little Ice Age, which followed the Medieval Warm P
period known as the Little Ice Age, which followed the Medieval
Warm PeriodPeriod.
They tend to show more variability than the original hockey stick (their sticks are not as straight), but they all support the general conclusions the IPCC TAR presented in 2001:
late 20th century
warming is anomalous in the last one or two thousand years, and the 1990s were likely
warmer than any other time in that
period.
Anthropogenic
warming in the post — war
period was 0.4 degrees K. 1944 to 1998 including both the mid century cool and the
late century
warm Pacific Ocean regimes — as seen in surface temperature records.