Sentences with phrase «average polar temperatures»

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)?

Not exact matches

Since it's in a polar desert where the average temperature is minus 3.46 degrees Fahrenheit (minus 19.7 degrees Celsius), precipitation can't explain the cascade, gushing through the Arctic permafrost at nearly 137 gallons per second.

Yet the global average temperature differences corresponding to these radically different climates were only about 5 degrees C in the tropics and 8 degrees C in polar regions.

But within these long periods there have been abrupt climate changes, sometimes happening in the space of just a few decades, with variations of up to 10ºC in the average temperature in the polar regions caused by changes in the Atlantic ocean circulation.

The last decade has been one of the warmest on record for the polar region, with 2007 summer temperatures having risen 9 degrees Fahrenheit above average in some areas.

Rising polar temperatures caused the average thickness of winter Arctic sea ice to decrease from about 12 feet to 6 feet between 1978 and 2008, and thinner ice melts more readily.

The researchers found that phytoplankton in polar and temperate regions grow best at temperatures higher than the average annual temperatures of the oceans in which they live.

And this one does graph trend lines for polar stratospheric temperature that on average over recent years would correlate to the trend line for area for PSCs in the article being discussed:

Reconstructions of past Hothouse climates had shown that temperatures had been around six degrees higher on average, and higher still in polar regions, with no polar ice - caps and a temperate to subtropical fauna and flora, as evidenced by the fossil record in these areas.

Cause rising of the average temperature of the Earth could lead to effect - the melting of polar ices, soil desertification, and extinction of certain species of flora and fauna.

[1] CO2 absorbs IR, is the main GHG, human emissions are increasing its concentration in the atmosphere, raising temperatures globally; the second GHG, water vapor, exists in equilibrium with water / ice, would precipitate out if not for the CO2, so acts as a feedback; since the oceans cover so much of the planet, water is a large positive feedback; melting snow and ice as the atmosphere warms decreases albedo, another positive feedback, biased toward the poles, which gives larger polar warming than the global average; decreasing the temperature gradient from the equator to the poles is reducing the driving forces for the jetstream; the jetstream's meanders are increasing in amplitude and slowing, just like the lower Missippi River where its driving gradient decreases; the larger slower meanders increase the amplitude and duration of blocking highs, increasing drought and extreme temperatures — and 30,000 + Europeans and 5,000 plus Russians die, and the US corn crop, Russian wheat crop, and Aussie wildland fire protection fails — or extreme rainfall floods the US, France, Pakistan, Thailand (driving up prices for disk drives — hows that for unexpected adverse impacts from AGW?)

[Response: They measure something different (MSU - TLT is a weighted average of temperatures reaching from the surface to 10 km, peaking at around ~ 4 km and with significant influence from surface type depending on elevation and polar latitude).

Ten celsius (50F) works well because that temperature seems to be too cool for equatorial regions and too warm for polar regions in the mind of the average viewer.

As far as this historic period is concerned, the reconstruction of past temperatures based on deep boreholes in deep permafrost is one of the best past temperature proxies we have (for the global regions with permafrost — polar regions and mountainous regions)-- as a signal of average temperatures it's even more accurate than historic direct measurements of the air temperature, since the earth's upper crust acts as a near perfect conservator of past temperatures — given that no water circulation takes place, which is precisely the case in permafrost where by definition the water is frozen.

And this one does graph trend lines for polar stratospheric temperature that on average over recent years would correlate to the trend line for area for PSCs in the article being discussed:

Obtaining the globally averaged temperature from weather station data has a well - known problem: there are some gaps in the data, especially in the polar regions and in parts of Africa.

Temperatures in the tropics (especially daytime temperatures) are much higher than the global «average» so the absolute humidity must be higher as well — conversely, temperatures in the polar regions are much colder than globTemperatures in the tropics (especially daytime temperatures) are much higher than the global «average» so the absolute humidity must be higher as well — conversely, temperatures in the polar regions are much colder than globtemperatures) are much higher than the global «average» so the absolute humidity must be higher as well — conversely, temperatures in the polar regions are much colder than globtemperatures in the polar regions are much colder than global averages.

If recent trends continue, the Arctic will be ice - free on January 30, 2018 at 6:04 AM, with polar temperatures averaging -31 C. Ocean and Ice Services Danmarks Meteorologiske Institut

This southern polar zone experienced average monthly temperatures as much as 8.7 above the global average across a relatively broad zone.

On the other hand, the Arctic sea ice albedo reduction does contribute significantly to polar amplification of globally averaged temperature changes.

Tagged Amstrup, average global temperature, Bayesian models, BBC, climate change, Derocher, extinct, future climate, future population decline, global warming, polar bear, sea ice declines, sea ice models

The global average temperature calculations cover 97 - 98 percent of the earth's surface, excluding only the most extreme polar latitudes.

If we ask, «Will the earths average temperature melt all of the polar ice» and all we know («normal science» knowing) is that the average temp is between -273 and 100K, then we can not answer that question with scientific knowledge.

: Figure 18 - of change in the mean temperature of summer (deviations from the average), smoothed by 50 - year filter, and the dynamics of polar timber line

Despite this natural variability - related switch pulling global temperatures down, NASA shows a globe in which few regions experienced below - average temperatures and where the highest concentration of record - warm temperatures are centered near the northern polar region.

«Research has suggested that average temperatures may have risen by as much as 3C in some parts of the Antarctic over the past few decades,» said Rod Downie, polar programme manager for the World Wide Fund for Nature.

In the latest attempt to cost the impact of rising carbon dioxide levels in the atmosphere, and the continuous rise in global average temperatures, all as a consequence of fossil fuel combustion and other human action, the economist Chris Hope of the University of Cambridge and the polar expert Kevin Schaefer of the University of Colorado have turned their sights on the Arctic.

If the ocean average temperature was 10 C, then definitionally, Earth's global climate would left it's icebox climate [which characterized as cold oceans and polar caps] and Earth has been in icebox climate for millions of years.

The last time in Earth history when the global average surface temperature was as warm as the IPCC projects for 2100 in its mid-range scenarios, there was very little polar ice and sea level would have been roughly 70 meters (over 200 feet) higher than at present.

The polar coverage of GISTEMP arises mainly from the fact that GISTEMP allows each weather station to contribute to an area of radius 1200 km around the station - this distance was determined by examining how temperature changes with distance in regions with good coverage (see Of Averages and Anomalies - Part 1B).

Global temperatures of 7C warmer would likely mean polar temperatures were as much as 20C warmer on average.

By 2100, they claim, the atmospheric carbon dioxide concentration will double, causing the average temperature on Earth to increase by 1.9 °C to 5.2 °C, and in the polar region by more than 12 °C.

As the Earth's surface cools further, cold conditions spread to lower latitudes but polar surface water and the deep ocean can not become much colder, and thus the benthic foraminifera record a temperature change smaller than the global average surface temperature change [43].

The polar regions are particularly sensitive to small rises in the annual average temperature, they are sometimes referred to as «the canary in the coalmine» in that they show changes long before they can be seen elsewhere in the world.

Since CO2 is far higher now, polar amplification should be higher, and permafrost should be subject to thawing at a lower average world temperature.

â $ œThe polar regions are experiencing the most dramatic increase in average temperatures due to global warmingâ $ only in computer models.

Averaging up polar and tropical values and then top it all off by averaging winter and summer temperatures to give a yearly average and a ranking is really quite meaAveraging up polar and tropical values and then top it all off by averaging winter and summer temperatures to give a yearly average and a ranking is really quite meaaveraging winter and summer temperatures to give a yearly average and a ranking is really quite meaningless.