Sentences with phrase «temperatures at the pole»

One of the challenges has been accurately determining the difference between sea surface temperatures at the poles and the equator during the Eocene, with models predicting greater differences than data suggested.

Tens of millions of years ago, the average temperature at the poles was 15 or 20 °C.

New reports — from Greenland to Antarctica — show rising temperatures at both poles and changing conditions in what were once stable, icebound areas.

But if temperatures at the poles change more rapidly than those at the equator, the dual constraints on the jet streams become imbalanced.

Polar amplification, in which temperatures at the poles rise more rapidly than temperatures at the equator (due to factors like the global atmospheric and oceanic circulation of heat from the equator to the poles), plays a major role in the rate of ice sheet retreat.

Polar amplification, in which temperatures at the poles rise more rapidly than temperatures at the equator (due to factors like the global atmospheric and oceanic circulation of heat from the equator to the poles), plays a major role in the rate of ice sheet retreat.

We know temperatures at both poles are warming in recent times.

The temperature at the poles of Venus (over 720K) can not be explained by any «runaway greenhouse effect» because there is less than 1W / m ^ 2 from the Sun that gets through the Venus atmosphere to the surface at the poles.

It seems reasonable to me that some of this data may not exist since the ice was melting or sublimating because of high temperatures at the poles.

Figure 12 shows that, if the GMST increases by 3C, from the current ~ 15C to ~ 18C, the average temperature at the poles would increase from -36 C to -7 C, and the temperature gradient from tropics to poles would decrease from 0.82 C to 0.44 C per degree latitude.

If there is an ice - free climate that consistently produces a temperature at the pole that is greater than freezing, then putting an ice cube at the pole, even if the ice reflects all solar radiation, will not be stable, since the warm air will simply diffuse in from the sides.

But at the same time, surface temperatures at the pole were rising to above freezing.

Not exact matches

Where I live, we've been trapped in sub-arctic temperatures for a few weeks (it was literally colder in Toronto on Sunday than it was at the north pole).

Forecasts without systematic errors: climate models, such as the model MPI - ESM LR of the Max Planck Institute for Meteorology, predict a significant increase in temperature by the end of this century, especially at the Earth's poles.

Although Mercury's daytime temperatures exceed 800 degrees Fahrenheit, radar studies indicate that the planet has vast deposits of ice within the perpetually dark, frigid craters at its poles.

The poles are on the front lines of climate change — melting ice, thawing permafrost, warming temperatures — but they are also at the forefront of weather patterns, global oceanic circulation and the marine food chain.

The clock's mechanical parts left its accuracy at the mercy of shifting temperatures, pressures and even Earth's gravitational pull, since pendulums swing faster at lower altitudes and at Earth's poles.

There are many factors that can affect the number and intensity of storms — not just the temperature gradient between pole and equator, but also east to west gradients and vertical gradients at both larger and local scales.

Crop pests and diseases are moving towards the poles at about the same speed as warmer temperatures.

«The surface temperatures on Mars may reach a high of about 20 °C elcius at the equator and as low as -153 ° Celsius at the pole.

In addition, the cold temperatures and the way air is mixed close to the surface at the poles mean that the surface has to warm more to radiate additional heat back to space.

Polar satellites, which orbit the earth from pole to pole at an altitude of approximately 515 miles, give closer, more detailed observations of the temperature and humidity of different layers of the atmosphere.

And that if you heat a magnet up enough, then you have no magnet at all: High temperatures randomly jumble all the bits of magnetic material (ultimately orientations of spinning electrons) that had aligned themselves along the north - to - south - pole axis.

Cheung and his colleague used modeling to predict how 802 commercially important species of fish and invertebrates react to warming water temperatures, other changing ocean properties, and new habitats opening up at the poles.

Studies have already estimated that species such as butterflies are creeping toward the poles at a rate of six kilometers per decade as temperatures rise.

Yet, despite their widespread use, at room temperature only three elements are ferromagnetic — meaning they have high susceptibility to becoming and remaining magnetic in the absence of a field, as opposed to paramagnetic substances, which are only weakly attracted to the poles of a magnet and do not retain any magnetism on their own.

Daytime temperatures in the tropics rarely drop below about 77 degrees, whereas at the poles they never exceed that.

Has anyone tried modeling the pole as a circular disc using the temperature at the center as a measure of average polar temperature, borrowing an idea from harmonic analysis (Average Value Theorem)?

«I predict that due to the loss of these atmospheric whirlpools, the average temperature on Jupiter will change by as much as 10 degrees Celsius, getting warmer near the equator and cooler at the poles,» says Marcus.

Scientists now believe that ice collects on the floors of deep craters at Mercury's poles, where it can remain permanently shaded from the Sun and reach temperatures as low as -235 degrees Fahrenheit (125 degrees Kelvin).

There just isn't much ice left, and what is left would be extremely difficult to melt, as most of it is located at high latitudes around the poles which are mostly dark 6 months out of the year with way below freezing temperatures.

This accelerating magnetic pole alignment shift correlates well with the observed temperature shifts at the earth's surface.

If you look the same trend in Siberia, Northern Canada or Sea at 80th parallel, all of them show a strong amplification and push the average of North pole temperature increasing.

There is no doubt that it is upper troposphere cloud that responds to change in local temperature in turn related to periodic change in ozone concentration that is in turn associated with vortex activity at the poles.

I think I know where I've been going wrong: it'll still be colder at the poles (or at high altitude) whatever the average global temperature: the ice is a symptom of that, not a cause.

I have done the usual suspects like wiki and links but my problem is duration of mixing (particularly at the poles) and the idea that «pollution» of the sort briefly described increases temperature.

re Gavin @ 223 I know what the mean global temperature is (actually, I don't, see below) but the question was why is this a meaningful metric for looking at changes over time, when you could get the same global mean from very different distributions of temperature (eg increase the poles, decrease the tropics) which would have very different interpretations of energy balance (at least if I am right that humidity matters)?

I made temperature plots from the reanalysis 2 (NCEP / DOE) data for the North Pole (actually a zonal mean at 88.5 ° N; there's no grid point at the pole) and for the zonal means at 85 ° N, 81 ° N and 75 ° N (excluding land and the last also excluding the always ice - free parts of the Atlantic).

«I predict that due to the loss of these atmospheric whirlpools, the average temperature on Jupiter will change by as much as 10 degrees Celsius, getting warmer near the equator and cooler at the poles,» says Marcus.

It seems to me that all feedback should be expressed as power densities and the thermal sensitivity taken from change in temperature versus solar power density from poles to equator at sea level as at most 0.3 k per w / m ^ 2

-- The Equator - to - pole temperature gradient (Paleocene - Eocene) was much reduced compared to today, therefore the frost - free zone (a limiting factor for the rainforest) existed at higher latitudes than today.

In other words, it is only in the last glacial (100 kyr) that we see any change in tropical temperature corresponding to that at the poles.

We have plenty of evidence from the places where the models tell us to look — at the poles, overnight low temperatures, dates of first and last frost, etc..

R. Gates says: «This would imply some kind of causal linkage to the temperatures at lower latitudes with those at the pole in the process of polar amplification.

This would imply some kind of causal linkage to the temperatures at lower latitudes with those at the pole in the process of polar amplification.

It stands to reason that Temperature increases will be larger at the poles than at the equator.

At Venus distance the oceans should be heated to higher temperature, ensuring that there was no permanent ice cap at the poleAt Venus distance the oceans should be heated to higher temperature, ensuring that there was no permanent ice cap at the poleat the poles.

Based on the cycle, it would suggest that we are heading into another Ice Age period of cooling where global temperatures will drop and ice will again form heavily at the poles.

Typical temperature reconstructions for the late Pliocene however [see one at the top of this story - 3.3 - 3.0 Ma] already show an Earth in which a warmer climatic state is indeed [through for instance ice albedo feedbacks] relatively strong around the poles, and (on average) weaker around the equator, exactly the pattern that is monitored under the current climate warming.

Because of this, atmospheric temperatures near the poles start to rise at an accelerated rate.