Sentences with phrase «temperature over the period of»

Instead, the wood is «cooked» at high temperatures over a period of time, making it resistant to rot and insects, and rendering it dimensionally stable as well.

So that you heat the sheet metal so that one has constant temperature over period of 1/2 hour in the shade.

(6) The GCM models built by the CIC have consistently greatly overestimated the effects of CO2 on global average temperatures over a period of over 25 years.

If all that CO2 does is to marginally raise global temperature over the period of a natural solar driven warming and cooling cycle then there is nothing to fear because the mitigating effect in cool periods will outweigh any discomfort from the aggravating effect at and around the peak of the warm periods.

The standard deviation of local seasonal mean surface temperature over a period of years is a measure of the typical variability of the seasonal mean temperature over that period of years.

Not exact matches

Indeed, there is very little correlation between the estimates of CO2 and of the earth's temperature over the past 550 million years (the «Phanerozoic» period).

For given values of system parameters (temperature, reactant concentration, etc.), each oscillation will be a duplicate of the previous one, once an initial «warm - up» period is over.

UHT Soup - Soup which has been heat treated via ultra-high temperature (UHT) processing to become shelf - stable over a long period of time.

Temp Traq is a one - time use thermometer that you place under your child's arm and it allows you to track their temperature over a 24 hr period of time using an app on your phone.

· over three quarters of teachers experienced classroom temperatures in excess of 24 degrees on more than a quarter of days during the survey period (four weeks in summer 2011);

The thick covering of ice and water might mess up some of the geological processes that, at least on Earth, help regulate the planet's temperature over long periods of time.

«We only have about 150 years of direct measurements of temperature, so if, for example, we want to estimate how great of variations that can be expected over 100 years, we look at the temperature record for that period, but it can not tell us what we can expect for the temperature record over 1000 years.

First, they compared simulated and observed temperature trends over all 15 - year periods since the start of the 20th century.

For a start, observational records are now roughly five years longer, and the global temperature increase over this period has been largely consistent with IPCC projections of greenhouse gas — driven warming made in previous reports dating back to 1990.

Using different calibration and filtering processes, the two researchers succeeded in combining a wide variety of available data from temperature measurements and climate archives in such a way that they were able to compare the reconstructed sea surface temperature variations at different locations around the globe on different time scales over a period of 7,000 years.

Temperatures of over 60 degrees Celsius (140 degrees Fahrenheit) for a period of one hour are usually fatal to dust mites; freezing may also be fatal.

The average daily maximum temperature during the pup - rearing period was roughly 1 °C higher in the first 12 years of monitoring than in the second 12 years, and over the same period the average number of pups surviving per pack per year fell from five to three.

Researchers also need to test a large number of battery cells over a long enough period of time under various physical conditions and temperatures to ensure that dendrites will never grow.

Boersma and Rebstock looked at the cause of every recorded chick mortality in an Argentinian colony of Magellanic penguins, over a nearly 30 - year period, and compared these with changes in temperature and precipitation over the same time.

Tree growth and the amount of carbon dioxide exchange both varied greatly over the 16 - year period, and both were correlated with temperature.

However, the average surface temperature of the planet seems to have increased far more slowly over this period than it did over the previous decades.

Analyzing data collected over a 20 - month period, scientists from NASA's Goddard Space Flight center in Greenbelt, Md., and the Massachusetts Institute of Technology found that the number of cirrus clouds above the Pacific Ocean declines with warmer sea surface temperatures.

His team built a series of experimental ponds, each of which is warmed by a certain temperature range over a certain period of time.

Over a long period the earths surface temperature will remain approximately constant because the amount of heat absorbed as visible light is equal to the amount emitted as infrared light.

Ranging from the magnesium levels in microscopic seashells pulled from ocean sediment cores to pollen counts in layers of muck from lakebeds, the proxies delivered thousands of temperature readings over the period.

Despite their considerable differences, the atmospheres of Earth, Jupiter, and Saturn all display a remarkably similar phenomenon in their equatorial regions: vertical, cyclical, downwards - moving patterns of alternating temperatures and wind systems that repeat over a period of multiple years.

«Looking at weather and dengue incidents over longer periods, we found a similar strong link between how increased rainfall and warmer temperatures resulting from the reoccurring el Niño phenomenon are associated with elevated risks of dengue epidemics.

«For various periods over the last 60 years, we have been able to combine important processes: atmospheric variability, such as the North Atlantic Oscillation, water and air temperatures, the occurrence of fresh surface water, and the duration of convection,» explains Dr. Marilena Oltmanns from GEOMAR, lead author of the study.

Because the models predict little average precipitation increase nationwide over this period, the product of CAPE and precipitation gives about a 12 percent rise in cloud - to - ground lightning strikes per degree in the contiguous U.S., or a roughly 50 percent increase by 2100 if Earth sees the expected 4 - degree Celsius increase (7 degrees Fahrenheit) in temperature.

After giving the dunnarts a month to get used to their diet, the team continued the diets for a further 19 days and recorded the length and times of the animals» torpor over this period, using nests installed with temperature sensors and video recorders.

Scientists now think that massive volcanic activity, in a Large Igneous Province called the Siberian Traps, raised air and sea temperatures and released toxic amounts of greenhouse gases into the atmosphere over a very short period of time.

«If water temperatures increase as a result of climate change, this could have far - reaching consequences not only for the individual species, but also for the balance of the ecosystem, which has developed over a long period of time,» says Luckenbach.

The new method has already been used to examine climatic records of sea surface temperature at 65,000 points around the world over a period of 28 years and provided scientists with a clear understanding of when and where temperature fluctuations occur.

A scientist from the nearby Oak Ridge National Laboratory (ORNL) set up thermal cameras to record the temperature of the graves over 24 - hour periods while the bodies decomposed.

Over a period of forty years the average temperature near Felbrigg Hall has risen with 1.15 degrees Celsius.

The new paper uses alkenones from the Svalbard islands and is among the first studies that present Arctic summer temperature change over the period from the end of the last Ice Age some 12000 years ago.

If this rapid warming continues, it could mean the end of the so - called slowdown — the period over the past decade or so when global surface temperatures increased less rapidly than before.

According to the AAAS What We Know report, «The projected rate of temperature change for this century is greater than that of any extended global warming period over the past 65 million years.»

A comparison between temperatures over the most recent available 30 - year period (1978 - 2007) shows high temperatures over parts of Russia (Figure below — upper left panel), and the difference between the GISTEMP and HadCRUT 3v shows a good agreement apart from around the Arctic rim and in some maritime sectors (upper right panel).

The public, press and policy makers have been repeatedly told that three claims have widespread scientific support: Global temperature has risen about a degree since the late 19th century; levels of CO2 in the atmosphere have increased by about 30 % over the same period; and CO2 should contribute to future warming.

U.S. Data Since 1895 Fail To Show Warming Trend LINK WASHINGTON, Jan. 25 — After examining climate data extending back nearly 100 years, a team of Government scientists has concluded that there has been no significant change in average temperatures or rainfall in the United States over that entire period.

If sustained over a period of several years, such a temperature decrease could be sufficient to trigger an ice age!.

That's the main finding of a paper published Monday in Nature Climate Change, which looked at the rate of temperature change over 40 - year periods.

They then infer a higher temperature sensitivity to changes in radiance over this cycle and conclude that maybe 0.1 K temperature increase would be possible due to the variation in solar radiance, or about 30 % (if you push it) of the total temperature anomaly over this period.

Third, to fit global temperatures to CO2 over a period of 30 years and and use a linear trend to extrapolate for the next 50 years is asking for trouble.

Global mean temperatures averaged over land and ocean surfaces, from three different estimates, each of which has been independently adjusted for various homogeneity issues, are consistent within uncertainty estimates over the period 1901 to 2005 and show similar rates of increase in recent decades.

Vast numbers of corals died suddenly during a record - breaking El Niño that raised sea - surface temperature 1 °C over a 3 - month period.

The Hadcm3 model has calculated the largest increase in temperature which may be attributed to the reduction of aerosol load (40 %) over the period 1990 - 1999 somewhere in NE Europe, other models do that more in Southern Europe.

[T] he idea that the sun is currently driving climate change is strongly rejected by the world's leading authority on climate science, the U.N.'s Intergovernmental Panel on Climate Change, which found in its latest (2013) report that «There is high confidence that changes in total solar irradiance have not contributed to the increase in global mean surface temperature over the period 1986 to 2008, based on direct satellite measurements of total solar irradiance.»

Results from a multiregression analysis of the global and sea surface temperature anomalies for the period 1950 — 2011 are presented where among the independent variables multidecade oscillation signals over various oceanic areas are included.