I can only imagine it is an effect of drying over land areas, which is expected if
land warms faster than the ocean.
1)
Land warms faster than the ocean, and warmer oceans are probably the source of most of the extra moisture.
Second, as Gavin pointed out, the land - ocean temperature index tends to underestimate the truth because it's based on sea surface temperature rather than air temperature, while the meteorological - station index temperature tends to overestimate the truth because
land warms faster than ocean.
But the air above cleared
land warms faster and therefore rises more quickly, drawing the moist air from surrounding forested areas away.
I have noticed this before, as it make no sense to have
the land warm faster than the sea, unless there is a UHI influence in the data.
Not exact matches
Land developers burn forests in Latin America to feed the cattle that fill the cavernous appetites of
fast food chains in the United States — and the entire planet gradually
warms, leaving even the experts in doubt about the future of our global ecology.
Fast depletion of natural resources, pollution of air,
land and water, the global
warming and other atmosphere changes have catastrophic affects.
One such unexplained trend is that
warm - blooded
land animals are usually
faster than cold - blooded creatures of comparable size, whereas at sea the reverse is usually true.
Related research by the UW researchers and their collaborators shows that global
warming is now causing the
land - covered Northern Hemisphere to
warm faster than the Southern Hemisphere, further reversing the pre-1980s trend.
The former is likely to overestimate the true global SAT trend (since the oceans do not
warm as
fast as the
land), while the latter may underestimate the true trend, since the SAT over the ocean is predicted to rise at a slightly higher rate than the SST.
The former is likely to overestimate the true global surface air temperature trend (since the oceans do not
warm as
fast as the
land), while the latter may underestimate the true trend, since the air temperature over the ocean is predicted to rise at a slightly higher rate than the ocean temperature.
But I thought that the lower atmosphere was expected to
warm faster than the surface (when comparing global,
land + ocean trends).
The former is likely to overestimate the true global surface air temperature trend (since the oceans do not
warm as
fast as the
land), while the latter may underestimate the true trend, since the air temperature over the ocean is predicted to rise at a slightly higher rate than the ocean temperature.
The former is likely to overestimate the true global SAT trend (since the oceans do not
warm as
fast as the
land), while the latter may underestimate the true trend, since the SAT over the ocean is predicted to rise at a slightly higher rate than the SST.
In both hemispheres,
land regions have
warmed at a
faster rate than the oceans in the past few decades, consistent with the much greater thermal inertia of the oceans.
It is possible for the sea to
warm faster than the
land since heat comes into the Arctic from the Atlantic.
Longer records now available show significantly
faster rates of
warming over
land than ocean in the past two decades (about 0.27 °C vs. 0.13 °C per decade).
bozzza - The differences in the Arctic are perhaps 1/4 the ocean thermal mass as global ocean averages, small overall size (the smallest ocean), being almost surrounded by
land (which
warms faster), more limited liquid interchanges due to bottlenecking than the Antarctic, and very importantly considerable susceptibility to positive albedo feedbacks; as less summer ice is present given current trends, solar energy absorbed by the Arctic ocean goes up very rapidly.
Surface temperatures over
land regions have
warmed at a
faster rate than over the oceans in both hemispheres.
This is because, in this region, wind power depends on the temperature difference between the
land and the sea, and previous research has shown that
warming occurs
faster on
land than above oceans.
The northern hemisphere has
warmed faster than the southern because there's more
land in the north than the south, and
land has far less thermal inertia than ocean.
One of the problems is that if the
land is
warming faster and to a greater extent than the atmosphere, then the
warming pattern is not consistent with the GHE and there must be some other explanation for the
land warming.
Given how global
warming from CO2 is delivered prefentially over
land, high latitudes, in the winter 1.1 C should be quite welcome even before considering that plants will grow
faster using less water and have a longer growing season in which to do it.
If the skin would not be in close contact with the lower layers it would
warm as
fast as
land areas.
While consistent with the IPCC assessments of historical
warming, it lacks coverage of much of the
fast -
warming Arctic region and blends surface air temperatures over
land with slower -
warming sea surface temperatures over the ocean.
Since most of our ocean sensors are on the surface, and «ocean temperature» is often used as shorthand for «ocean surface temperature», it seems to me that we should see the oceans
warming at least as
fast as the
land, if internal ocean variability could explain global
warming.
Many agricultural regions
warm at a rate that is
faster than the global mean surface temperature (including oceans) but slower than the mean
land surface temperature, leading to regional
warming that exceeds 0.5 °C between the +1.5 and +2.0 °C Worlds.
Greenland's ice has been melting
faster than many scientists expected just a decade ago, spurred by
warming sea and
land temperatures, changing weather patterns, and other factors.
The tiny, close - knit clique of climate scientists who invented and now drive the «global
warming» fraud — for fraud is what we now know it to be — tampered with temperature data so assiduously that, on the recent admission of one of them,
land temperatures since 1980 have risen twice as
fast as ocean temperatures.
I was suggesting that this would be related to the recent
warming being mostly radiatively forced (so
land would
warm faster) whereas part of the earlier
warming was because the ocean was still giving up the heat it had gained in the 1875 - 1895
warmer period.
Currently some areas (e.g.
land and Arctic) are
warming faster than others.
Yet we know the
land around then Arctic is
warming faster than the global average so it seems unreasonable to suggest that the ocean isn't, Satellite temperature measurements up to 82.5 N support this as does the decline of Arctic sea ice here, here & here.
The
land is
warming twice as
fast as the ocean, and since the H2O responds to the ocean temperature the response to the global temperature may appear muted until this geographical imbalance has equilibriated.
As written above, it is natural that
lands warm (cool)
faster than seas: but, I think, it would be much better for studying GW (there are many other issues for
lands even without GW) to point on waters rather than on inhabited
lands (with a simple condition: all waters; not saying that Arctic pack is decreasing, making silence on Antarctic pack because it instead doesn't fit AGW theories).
(04/01/2013)
Warming about twice as
fast as the rest of the world, the Arctic is already undergoing massive upheavals from climate change: summer sea ice is thinning and vanishing,
land based ice sheets are melting, and sea levels are rising.
The
land is
warming faster than the oceans for this reason.
These models predicted that the Northern Hemisphere Polar region would
warm fastest and first, that the Southern Ocean would draw a greater portion of atmospheric heat into the ocean system, and that
land ice melt near Greenland and West Antarctica would generate cold, fresh water flows into the nearby ocean zones and set off localized cooling.
The
land is
warming twice as
fast as the ocean, the Arctic even more, somewhat as expected for CO2 forcing.
Under greenhouse
warming, the
land is
warming faster than the ocean, reducing the difference in temperature between the
land and the ocean, which reduces the strength of the winter monsoon.
In addition Arhennius predicted that the night would
warm faster than the day (not predicted or explained by DS), the winter
faster than summer (the opposite is wrongly predicted by DS) and the
land would
warm faster than over the ocean (not predicted by DS).
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4) If WV stayed the same on a planet entirely covered by
land and all else being equal the equilibrium temperature of that planet would be much less than that of Earth because the
faster response time in
warming up from solar energy would be matched by an equally
fast loss of energy at night and in winter.
In this case, the
land is
warming twice as
fast because its response to forcing is essentially immediate.
For centuries, it has been known that
land warms or cools
faster than the oceans — the reason is that the latter exhibits much greater thermal inertia due to its enormous heat capacity, and also because evaporation moderates ocean
warming.
Land is
warming twice as
fast, but that is due to thermal inertia and its response to external forcing.
The Arctic is
warming quite
fast, as is the
land.
With the
land warming twice as
fast, and the added effect of methane, there is an effective sensitivity to consider, and that does get to ECS type values quicker, so I wouldn't short - change the sensitivity to be conservative.
Focussing first on this period, the performance of the ERA - Interim and six other reanalyses in the Arctic was examined by Lindsay et al. [12] Although the accuracy of reanalyses in the
fast warming but sparsely observed Arctic region has been questioned, the authors found that ERA - interim had a very high correlation with monthly temperature anomalies at 449 Arctic
land stations.
Here the
land temperatures
warm and cool
faster than the ocean sea surface temperatures.
«With El Nino, the ocean essentially caps off it's ability to take up heat so the concentrations are growing
fast as
warmer land areas release carbon.