Due to the lack of a good explanation for
this onset of cooling, an objective scientist should select the fully formed theory A as more plausible unless good evidence was forthcoming for the alternative half - theory B. Hansen, of course, already knows that CO2 sensitivity is high because the heating half - cycle of the paleo data tells him so.
The crucial
onset of cooling is never discussed by realclimate.org, Hansen, yourself or indeed anyone because it suggests the postulated CO2 amplification suddenly disappears — ie temperature falls rapidly while CO2 is still rising.
The onset of a cooling lasting centuries is as quick as a drought.
I believe that the world has much more to fear with a sudden
onset of cooling rather than from the gradual warming that has been observed to date.
My concern with the time lag is not the initiation of warming, but
the onset of cooling while CO2 is still at a peak.
If there is also a time lag upon
the onset of cooling, then it appears that some other mechanism actually drives the temperature changes.
So what is the time difference between CO2 levels during
the onset of a cooling period at the end of a warming period and the time history of the temperature changes in the ice cores?
So what is the time difference between CO2 levels during
the onset of a cooling period at the end of a warming period and the time history of the temperature changes in the ice cores?
If there is also a time lag upon
the onset of cooling, then it appears that some other mechanism actually drives the temperature changes.
The onset of cool fall weather, lengthening nights, and big orange squash everywhere just puts me in the mood for pumpkin soup.
As summer gave way to the gradual
onset of cool air, pumpkin spice lattes, and football season, CrossFit athletes from around the world gathered at the their local box to #Give5Minutes and be awesome for autism.
However, 2017 is notable because the high temperatures continued despite the absence of El Niño and
the onset of its cool counterpart, La Niña.»
These are followed by smaller, thick - walled and denser cells late in the growing season which form due to
the onset of cooler temperatures, lack of soil moisture, and shorter days.
Not exact matches
What set this in motion is uncertain, but we think it has something to do with major climatic shifts that were happening around that time — a sudden
cooling in the Earth's climate driven by the
onset of one
of the worst parts
of the last Ice Age.
The dilation
of blood vessels in the skin
of your feet and hands when heat from the rest
of your body goes to your hands and feet
cools down the body and helps with the
onset of sleep.
The team found evidence for a period
of global
cooling that preceded the
onset of the monsoon.
Sodium atoms were evaporatively
cooled close to the
onset of Bose - Einstein condensation and then suddenly quenched to below the transition temperature.
A team led by the University
of Colorado Boulder has found the mechanism behind the sudden
onset of a «natural thermostat» in Earth's upper atmosphere that dramatically
cools the air after it has been heated by violent solar activity.
When temperatures were very cold on the mainland, the oceans remained warm, especially during the periods
of intense
cooling that took place at the
onset of glaciation.
At a recent conference, scientists explained how a major atmospheric circulation known as the North Atlantic Oscillation (NAO) was in a negative phase at the
onset of the LIA, which amplified the
cooling effect
of a reduction in solar irradiance and volcanic activity.
The National Weather Service favors the
onset of a La Niña event by late this summer or this fall, during which ocean temperatures in the tropical Pacific are
cooler than normal.
While both seasons are now officially over, as ocean waters
cool with the
onset of winter, that doesn't mean storms can't still form if conditions are right.
Figure 4 compares trendlines for each warming
onset, plateau and
cooling segment
of the five interglacial periods.
b) rate
of change for warm
onsets also referred to as Terminations and c) rate
of change for interglacial
cooling segments.
This varies from year to year, and the
onset of the fire season can be delayed by abundant mountain snowpack or a
cool and wet start to summer.
With the
onset of fall and winter or in the still
cool spring the importance
of other accessories is displaced
Sweater (similar) Boots (similar) It's no secret that
cooler months bring an
onset of deeper hues, darker colors, and less variety to wardrobe just recently filled with pastels...
The strong, lightweight pistons are
cooled with piston
cooling jets fitted in each cylinder that spray oil on the piston to more effectively control heat and help reduce the
onset of detonation in the combustion chamber.
The
onset of October month brings with itself a pleasant weather with
cooler morning and nights when the temperatures get low.
3) In order to assert human causation, I would think the data would have to show that, for example, Rocky Mountain National Park had continued unabated to the present day the
cooling trend established from approximately 1750 through 1850, while the Houston Ship Channel area exhibited the warming trend since the
onset of industrial activity.
The real danger on the
cooling side, however, probably isn't the next
onset of the glaciation phase
of the Ice Age.
However, it leads primarily to the
onset of ice ages or
cool periods rather than a warmer period (due to volcanic ash that blocks out the sun).
Furthermore, if aerosols did have such a dramatic cancelling effect at the
onset of WWII and during the following decades, is aerosol
cooling part
of the temperature models?
Firstly the relatively
cool Gulf Stream waters can be attributed to the early
onset of La Niña, as a witnessed statistical connection between Pacific and Caribbean coastal waters, called Western Hemisphere Warm Pool (WHWP).
The last two abrupt warmings at the
onset of our present warm interglacial period, interrupted by the Younger Dryas
cooling event, are investigated in high temporal resolution from the Greenland NGRIP ice core.
And just like the
onset of the cumulus circulation, the
onset of thunderstorms occurs earlier on days when it is warmer, and it occurs later (and sometimes not at all) on days that are
cooler than usual.
He points out, for example, that there's been a period
of global
cooling since the 18th - century
onset of the Industrial Revolution — from the 1940s to the 1960s — and that average temperatures rose in Europe between 1050 and 1300, even though there was no heavy industry going on back then.
The
onset of the associated
cooling has been given at 2010 by Easterbrook (2010) and Herrara (2010), and at «approximately 2014» by Abdassamatov (2010).
Steven At the
onset of the medieval Warm Period around 900 - 1000CE, from much
cooler preceding centuries, Why did it warm?
Thus the statement is actually `... while
cooling following the 14th century could be viewed as the initial
onset of the Little Ice Age in a broad sense.»
Our reconstruction thus supports the notion
of relatively warm hemispheric conditions earlier in themillennium, while
cooling following the 14th century could be viewed as the initial
onset of the Little Ice Age sensu lato.
Our reconstruction thus supports the notion
of relatively warm hemispheric conditions earlier in the millennium, while
cooling following the 14th century could be viewed as the initial
onset of the Little Ice Age sensu lato.
(One complaint I had about the 1997 paper was that it completely neglected the
cooling effect that evaporation has on rain, which is strongest at the
onset of a rain storm because the humidity is lowest then.
While melt
onset at Barrow was as early as it has been observed in the past 15 years with near complete snow melt in April, a
cooler May and June with additional snowfall and few meltponds have pushed back complete melt
of the ice cover.
The reality is, Greenland was named Green to attract settlers and regional climate at the time was very similar to today, perhaps even a little warmer and life for the Vikings there was a perpetual struggle until a confluence
of conditions left them vulnerable to a few severe winters in a row at the
onset of a regional
cooling.
We are reducing the probability, delaying the
onset and reducing the magnitude
of any
cooling event that might otherwise happen.
Correction, they label the
onset of warming as «
onset of see - saw» meaning that the souther hemisphere and tropics is warming while higher northern lats are
cooling.
The models heavily relied upon by the Intergovernmental Panel on Climate Change (IPCC) had not projected this multidecadal stasis in «global warming»; nor (until trained ex post facto) the fall in TS from 1940 - 1975; nor 50 years»
cooling in Antarctica (Doran et al., 2002) and the Arctic (Soon, 2005); nor the absence
of ocean warming since 2003 (Lyman et al., 2006; Gouretski & Koltermann, 2007); nor the
onset, duration, or intensity
of the Madden - Julian intraseasonal oscillation, the Quasi-Biennial Oscillation in the tropical stratosphere, El Nino / La Nina oscillations, the Atlantic Multidecadal Oscillation, or the Pacific Decadal Oscillation that has recently transited from its warming to its
cooling phase (oceanic oscillations which, on their own, may account for all
of the observed warmings and
coolings over the past half - century: Tsoniset al., 2007); nor the magnitude nor duration
of multi-century events such as the Mediaeval Warm Period or the Little Ice Age; nor the cessation since 2000
of the previously - observed growth in atmospheric methane concentration (IPCC, 2007); nor the active 2004 hurricane season; nor the inactive subsequent seasons; nor the UK flooding
of 2007 (the Met Office had forecast a summer
of prolonged droughts only six weeks previously); nor the solar Grand Maximum
of the past 70 years, during which the Sun was more active, for longer, than at almost any similar period in the past 11,400 years (Hathaway, 2004; Solankiet al., 2005); nor the consequent surface «global warming» on Mars, Jupiter, Neptune's largest moon, and even distant Pluto; nor the eerily - continuing 2006 solar minimum; nor the consequent, precipitate decline
of ~ 0.8 °C in TS from January 2007 to May 2008 that has canceled out almost all
of the observed warming
of the 20th century.
There was concern among some policy makers that the decades
of cooling from the mid-1940s through the mid 1970's represented the
onset of a new ice age.
The
onset of this climatic decline [i.e.
cooling] could be several thousand years in the future, although there is a finite probability that a serious worldwide
cooling could befall the earth within the next hundred years.»