Sentences with phrase «temperature over the past century»

A one - degree rise in the global temperature over the past century, he says, could account for the shifts.

While the planet's surface temperatures over the past century have risen to unprecedented levels, records have shown a slowdown in the pace of warming over the past 15 years.

It first needs to be emphasized that natural variability and radiatively forced warming are not competing in some no - holds barred scientific smack down as explanations for the behavior of the global mean temperature over the past century.

««Of the rise in global atmospheric temperature over the past century, nearly 30 % occurred between 1910 and 1940 when anthropogenic forcings were relatively weak.»

None of the models — not one of them — could match the change in mean global temperature over the past century if it did not utilise a unique value of assumed cooling from aerosols.

«claims that «Global warming is the unusually rapid increase in Earth's average surface temperature over the past century» are erroneous and indicative of either ignorance or duplicity on the part of NASA's Earth Observatory, NASA's Climate Consensus page, The Daily Mail, the EPA and many others.»

Regardless, claims that «Global warming is the unusually rapid increase in Earth's average surface temperature over the past century» are erroneous and indicative of either ignorance or duplicity on the part of NASA's Earth Observatory, NASA's Climate Consensus page, The Daily Mail, the EPA and many others.

Even while identifying some of the observed change in climatic behaviour, such as a 0.4 C increase in surface temperature over the past century, or about 1 mm per year sea level rise in Northern Indian Ocean, or wider variation in rainfall patterns, the document notes that no firm link between the do...

Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels.

The earth is facing a very alarming problem, one of this was the «global warming» or the unusually rapid increase in Earth's average temperature over the past century primarily due to the greenhouse gasses released as people burn fossil fuels.

Last month the Berkeley Earth Surface Temperature Project released the findings of its extensive study on global land temperatures over the past century.

There are subtle differences in how they analyze temperature data, but there's generally broad agreement, particularly the upward trend in temperatures over the past century.

Gavin points out that if Salby's model truly explained most or all of the 100 ppm observed rise in CO2 based on the 0.8 C rise in global temperature over the past century, that would imply a massive sensitivity of the CO2 flux to global temperatures.

Very few people are upset about the imaginary 0.7 C increase in temperature over the past century.

Over the past three decades, changes in [CO2] have increased global average temperatures (approx. 0.2 °C decade − 1 [2]-RRB-, with much of the additional energy absorbed by the world's oceans causing a 0.8 °C rise in sea surface temperature over the past century.

Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released by people burning fossil fuels.

Not exact matches

The US Environmental Protection Agency points out that Earth's average temperature has risen by 1.5 °F over the past century, and is projected to rise another 0.5 to 8.6 °F over the next hundred years.

Over the past nearly two centuries, Finland's average temperatures have increased by more than 2 degrees Celsius

The other global flu pandemics over the past century — in 1957, 1968 and 2009 — also followed cooler sea surface temperatures in the Pacific Ocean.

While Earth's landmass has warmed by about 1 degree Celsius (about 2 degrees Fahrenheit) over the past century, on average, land temperatures in the Arctic have risen almost 2 C (3.6 F).

Terrestrial ecosystems have encountered substantial warming over the past century, with temperatures increasing about twice as rapidly over land as over the oceans.

Although the earth has experienced exceptional warming over the past century, to estimate how much more will occur we need to know how temperature will respond to the ongoing human - caused rise in atmospheric greenhouse gases, primarily carbon dioxide.

Rather than using complex computer models to estimate the effects of greenhouse - gas emissions, Lovejoy examines historical data to assess the competing hypothesis: that warming over the past century is due to natural long - term variations in temperature.

They have concluded that the global average temperature over the past 1,000 years has been relatively stable until the 20th century.

Primack credits the three degree Fahrenheit temperature rise in eastern Massachusetts over the past century with jump - starting plant development in the spring.

The strongest evidence for global warming comes from physics and chemistry, not from records of past temperatures, which is why scientists were predicting warming long before the rise in temperature over the 20th century was obvious.

«They have done a less convincing job matching malaria decline with climate change, besides noting that temperatures have increased over the past century,» wrote Lafferty in an e-mail.

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.»

This study integrates the complementary information preserved in the global database of borehole temperatures [Huang et al., 2000], the 20th century meteorological record [Jones et al., 1999], and an annually resolved multi proxy model [Mann et al., 1999] for a more complete picture of the Northern Hemisphere temperature change over the past five centuries.

This signature can be measured in boreholes and then analyzed to reconstruct the surface temperature history over the past several centuries.

It's the ocean «These small global temperature increases of the last 25 years and over the last century are likely natural changes that the globe has seen many times in the past.

While El Niño played a role in bumping up global temperatures during 2015 and 2016, the bulk of the warmth was due to the excess heat trapped by greenhouse gases emitted by humans over the past century, particularly carbon dioxide.

seems to be incompatible with the statement from his Annual review paper from 2000 (see abstract below) that: «The average surface temperature of the continents has increased by about 1.0 K over the past 5 centuries; half of this increase has occurred in the twentieth century alone.»

The second reference is, of course, the first MBH Nature paper, Global - scale temperature patterns and climate forcing over the past six centuries.

The global mean temperature rise of less than 1 degree C in the past century does not seem like much, but it is associated with a winter temperature rise of 3 to 4 degrees C over most of the Arctic in the past 20 years, unprecedented loss of ice from all the tropical glaciers, a decrease of 15 to 20 % in late summer sea ice extent, rising sealevel, and a host of other measured signs of anomalous and rapid climate change.

Mann, M.E., R.S. Bradley, and M.K. Hughes, 1998: Global - scale temperature patterns and climate forcing over the past six centuries.

During this winter in the southern hemisphere, centuries - old heatwave records have been shattered all over Australia in the past week as cities from Hobart to Sydney have been hit by prolonged stretches of temperature far above normal.

This single - year snapshot of the planet's warmth fits with the pattern of ever - warmer temperatures that has been in place over the past century, particularly since the early 1980s as the warming fueled by an accumulation of greenhouse gases clearly emerged.

Huang, Shaopeng, Pollack, Henry N., and Shen, Po - Yu (2000) «Temperature trends over the past five centuries reconstructed from borehole temperatures,» Nature, 403 (17 February 2000), 403, 756 - 758.

Over the past century, soil temperatures at both 30 cm and 100 cm depths, have risen twice as fast as air temperature.»

Surface temperature changes over the past century have been episodic and modest and there has been no net global warming for over a decade now.1, 2

Moreover, not even the most extreme scenario for the next century predicts temperature changes over North America as large as the anomalies witnessed this past month.

Personally I got convinced that warming was underway in the late 1990s after borehole measurements in rocks around the world, far away from civilization, showed unmistakable evidence of warming over the past century... if you log temperature down the hole, you find that extra heat has been seeping down from the surface.

The actual prevailing view of the paleoclimate research community that emerged during the early 1990s, when long - term proxy data became more widely available and it was possible to synthesize them into estimates of large - scale temperature changes in past centuries, was that the average temperature over the Northern Hemisphere varied by significantly less than 1 degree C in previous centuries (i.e., the variations in past centuries were small compared to the observed 20th century warming).

While the observed Antarctic temperatures rose by about 0.4 degrees Fahrenheit (0.2 degrees Celsius) over the past century, the climate models simulated increases in Antarctic temperatures during the same period of 1.4 degrees F (0.75 degrees C).

Such research dates back to 1991, when the Danish Meteorological Institute released a study showing that world temperatures over the past several centuries correlated very closely with solar cycles.

Mann, M.E., R.S. Bradley, and M.K. Hughes, Global - scale temperature patterns and climate forcing over the past six centuries, Nature, 392, 779 - 787, 1998.

By integrating a global database of terrestrial heat flux measurements with another database of temperature versus depth within boreholes and with the twentieth - century instrumental record of surface temperature, Huang et al. reconstruct the surface temperature history over the past 20,000 years.

It supports the hockey - stick representation of shallow fluctuations of climate over the past 1000 years and points to the sudden «unprecedented» increase in 20th century temperatures as evidence that increased CO2 levels are the main contributory factor.

The paper was accompanied by a press release entitled «Global Warming not a Man - made Phenomenon», in which Shaviv was quoted as stating, «The operative significance of our research is that a significant reduction of the release of greenhouse gases will not significantly lower the global temperature, since only about a third of the warming over the past century should be attributed to man».