We also include in the category of slow feedbacks the global warming spikes, or «hyperthermals», that have occurred a number of times in Earth's history during the course of
slower global warming trends.
Not exact matches
A
slow - down in
global warming is not a sign that climate change is ending, but a natural blip in an otherwise long - term upwards
trend, research shows.
The findings show a slight but notable increase in that average temperature, putting a dent in the idea that
global warming has
slowed over the past 15 years, a
trend highlighted in the most recent Intergovernmental Panel on Climate Change report.
«Note: LOTI provides a more realistic representation of the
global mean
trends than dTs below; it slightly underestimates
warming or cooling
trends, since the much larger heat capacity of water compared to air causes a
slower and diminished reaction to changes.»
With this prediction, and the
trend toward the
slowing down of the jet stream, is it time to consider / advocate geoengineering as a response to
global warming?
Even an apparent
global dimming
trend in the last decade has been unable to
slow the inexorable
warming of the
global oceans.
But if you're studying a 75 - year cycle, or a
slow trend like
global warming, then only
global temperature matters.
To point out just a couple of things: — oceans
warming slower (or cooling
slower) than lands on long - time
trends is absolutely normal, because water is more difficult both to
warm or to cool (I mean, we require both a bigger heat flow and more time); at the contrary, I see as a non-sense theory (made by some serrist, but don't know who) that oceans are storing up heat, and that suddenly they will release such heat as a positive feedback: or the water
warms than no heat can be considered ad «stored» (we have no phase change inside oceans, so no latent heat) or oceans begin to release heat but in the same time they have to cool (because they are losing heat); so, I don't feel strange that in last years land temperatures for some series (NCDC and GISS) can be heating up while oceans are slightly cooling, but I feel strange that they are heating up so much to reverse
global trend from slightly negative / stable to slightly positive; but, in the end, all this is not an evidence that lands»
warming is led by UHI (but, this effect, I would not exclude it from having a small part in temperature
trends for some regional area, but just small); both because, as writtend, it is normal to have waters
warming slower than lands, and because lands» temperatures are often measured in a not so precise way (despite they continue to give us a
global uncertainity in TT values which is barely the instrumental's one)-- but, to point out, HadCRU and MSU of last years (I mean always 2002 - 2006) follow much better waters» temperatures
trend; — metropolis and larger cities temperature
trends actually show an increase in UHI effect, but I think the sites are few, and the covered area is very small worldwide, so the
global effect is very poor (but it still can be sensible for regional effects); but I would not run out a small
warming trend for airport measurements due mainly to three things: increasing jet planes traffic, enlarging airports (then more buildings and more asphalt — if you follow motor sports, or simply live in a town / city, you will know how easy they get very
warmer than air during day, and how much it can
slow night - time cooling) and overall having airports nearer to cities (if not becoming an area inside the city after some decade of hurban growth, e.g. Milan - Linate); — I found no point about UHI in towns and villages; you will tell me they are not large cities; but, in comparison with 20-40-60 years ago when they were «countryside», many small towns and villages have become part of larger hurban areas (at least in Europe and Asia) so examining just larger cities would not be enough in my opinion to get a full view of UHI effect (still remembering that it has a small
global effect: we can say many matters are due to UHI instead of GW, maybe even that a small part of measured GW is due to UHI, and that GW measurements are not so precise to make us able to make good analisyses and predictions, but not that GW is due to UHI).
If you're talking about a change in the rate,
trend of
warming, or even just say that «
warming has
slowed» in the context of the general discussion about
global temperature records, you are implying something about a change in
trend.
Responding to and in the manner of KK Tung's UPDATE (and, you can quote me): globally speaking the
slowing of the rapidity of the
warming, were it absent an enhanced hiatus compared to prior hiatuses, must at the least be interpreted as nothing more than a slowdown of the positive
trend of uninterrupted
global warming coming out of the Little Ice Age that has been «juiced» by AGW as evidenced by rapid
warming during the last three decades of the 20th Century, irrespective of the fact that, «the modern Grand maximum (which occurred during solar cycles 19 — 23, i.e., 1950 - 2009),» according to Ilya Usoskin, «was a rare or even unique event, in both magnitude and duration, in the past three millennia [that's, 3,000 years].»
As we have recently discussed, although we can't say for certain statistically, it's likely that the
global surface temperature
warming trend has
slowed over the past decade, because virtually all short - term temperature impacts have been in the cooling direction over that timeframe.
Climate «skeptics» desperately want us to believe that the
trend has
slowed because
global warming has magically disappeared, but that's simply not the case.
Early analyses of
global temperature
trends during the first ten years of this century seemed to suggest that
warming had
slowed down.
Why not when it comes to a claim that
global warming trends have stopped (paused) or even
slowed down?
«When the fluctuations in temperature over the last 32 years (which tend to obscure the continuation of the
global warming trend) are accounted for, it becomes obvious that there has not been any cessation, or even any
slowing, of
global warming over the last decade (or at any time during this time span).
And this is particularly clear in the pages of the Guardian, who have, over the last 12 or so months been especially keen to remind us that cooling
trends are «not evidence that
global warming is
slowing».
There is no evidence * whatsoever * of even a
slow - down in the
global warming trend, in fact it's still accelerating.
Note: LOTI provides a more realistic representation of the
global mean
trends than dTs below; it slightly underestimates
warming or cooling
trends, since the much larger heat capacity of water compared to air causes a
slower and diminished reaction to changes; dTs on the other hand overestimates
trends, since it disregards most of the dampening effects of the oceans that cover about two thirds of the Earth's surface.
While the rate of
global warming has
slowed in the past several years, possibly due to natural climate variability, the long - term temperature
trend clearly shows that we're living on a
warming planet.
«
Global Warming Could Forestall Ice Age, Study Suggests,» an article in the September 4 New York Times by Andrew Revkin, talks about a new study that concludes that human - driven global warming could reverse a slow, long - term Arctic cooling trend and... Continue rea
Global Warming Could Forestall Ice Age, Study Suggests,» an article in the September 4 New York Times by Andrew Revkin, talks about a new study that concludes that human - driven global warming could reverse a slow, long - term Arctic cooling trend and... Continue re
Warming Could Forestall Ice Age, Study Suggests,» an article in the September 4 New York Times by Andrew Revkin, talks about a new study that concludes that human - driven
global warming could reverse a slow, long - term Arctic cooling trend and... Continue rea
global warming could reverse a slow, long - term Arctic cooling trend and... Continue re
warming could reverse a
slow, long - term Arctic cooling
trend and... Continue reading →
The «note» you refer to goes: «Note: LOTI provides a more realistic representation of the
global mean
trends than dTs below; it slightly underestimates
warming or cooling
trends, since the much larger heat capacity of water compared to air causes a
slower and diminished reaction to changes; dTs on the other hand overestimates
trends, since it disregards most of the dampening effects of the oceans that cover about two thirds of the earth's surface.»
Plain Language Summary:
Global and regional
warming trends over the course of the twentieth century have been nonuniform, with decadal and longer periods of faster or
slower warming, or even cooling.