Sentences with phrase «measurements dating back»

Analyses of global climate from measurements dating back to the nineteenth century show an «Atlantic Multidecadal Oscillation» (AMO) as a leading large - scale pattern of multidecadal variability in surface temperature.

NASA calculations said that July temperatures also broke all previously recorded measurements dating back to 1880.

Lead author Dr Anna Hogg, from the Leeds» School of Earth and Environment, said: «Dramatic changes have been reported in this part of Antarctica, so we took a closer look at how its glaciers have evolved using 25 years of satellite measurements dating back to the early 1990s.»

Also, there is paleoclimate data that contradicts the ice - core data, such as Stomata and we have 90,000 direct empirical chemical measurements dating back to 1812 of atmospheric with a 3 % accuracy that depicts CO2 as high as 440ppm (Beck 2007).

Rings in fossilised pine trees have proven that the world was much warmer than previously thought - with measurements dating back to 138BC

To put the matter simply, the science of Dendrochronology uses tree ring Rings in fossilised pine trees have proven that the world was much warmer than previously thought - with measurements dating back to 138BC

Currently we do not know because our oldest measurements date back less than 40 years.»

Not exact matches

A total of over 5,000 measurements of glacier volume and mass changes since 1850 and more than 42,000 records from observations and reconstructions dating back to the sixteenth century were analyzed.

Based on magnetic field measurements taken by the Messenger at an altitude as low as 9 miles, scientists have now discovered that Mercury, located just 36 million miles from the sun, possesses a magnetic field dating back almost four billion years.

Research dating back to the 1990s suggests the size measurement on which most children's furniture was based on the average size of children in the 1960s, when they tended to be shorter.

Since the ERAINT only goes as far back as 1989, it involves many modern satellite - borne remote sensing measurements, and it is believed that there are less problems with observational network discontinuity after this date than in the earlier days.

Natural variability has never been properly evaluated with respect to the human and paleo records dating back millions of years and only now with satellite measurements do we have the ability to evaluate weather and climate trends with any degree of statistical probity.

Ernst - Georg Beck, by assembling more than 90,000 pre-1958 measurements of atmospheric CO2 dating back to the nineteenth century, has shown rather large variations, including a major increase roughly coincident with a rise in ocean temperatures from 1920 to 1940 [Beck 2007].

«Precise measurements of temperature within the ocean confirm that the Earth is absorbing more energy from sunlight than it emits back to space, providing perhaps the strongest evidence to date that rising concentrations of greenhouse gases and other pollutants are the primary cause of the current global warming trend.

«These authors [Hantemirov and Shiyatov] state that their data (derived mainly from measurements of relic wood dating back over more than 2,000 years) included 17 ring - width series derived from living trees that were between 200 - 400 years old.

There are very accurate temperature measurements recorded for many places dating back to the late 1700s, recorded using a thermometer.

with over 90,000 direct atmospheric measurements, with 3 % or better accuracy, of carbon dioxide dating back almost 200 years, why does the ipcc rely on ice core values, a technique that is deeply flawed.