Sentences with phrase «instrumental record dated»

«This means temperatures will remain well above the long - term average and we will continue to see temperatures like those which resulted in 2000 - 2009 being the warmest decade in the instrumental record dating back to 1850.»

Not exact matches

Until now, instrumental temperature records dating back to the middle of the nineteenth century have been compiled by three main research groups: NASA's Goddard Institute for Space Studies in Greenbelt, Maryland; the US National Oceanic and Atmospheric Administration in Washington DC; and a collaboration between Britain's Met Office and the Climatic Research Unit at the University of East Anglia in Norwich, UK.

There are long instrumental and historical records in these regions which clearly show no «slippage» of dating prior to 1816.

Figure 2 provides a comparison of them all, starting in AD 500 (the earliest date in Mann 2008's global reconstruction), with the northern hemisphere instrumental record shown for comparison.

If the paleo part of the chart has a granularity of 120 years, and the present temps are the annual instrumental record (tortured to bend upwards), then it is clear that the medieval warm period (error bars) still make it stick up above the most stretched out hockey stick to date.

«To produce temperature series that were completely up - to - date (i.e. through to 1999) it was necessary to combine the temperature reconstructions with the instrumental record, because the temperature reconstructions from proxy data (such as tree rings) ended many years earlier whereas the instrumental record is updated every month.»

If you have an instrumental way to demonstrate this «disappearing from our visible spectrum» hypothesis, then all sunspot observations prior to the date that instrument began measuring must be all but thrown out, because we would have no clue what invisible priors existed, so the uncertainty of the pre-instrumental record would skyrocket.

Instrumental climate records aren't available for dates before the mid-19th century so scientists must turn to data from «proxies» such as tree - rings, corals, and ice cores.

The analysis is based on Central England Temperature (CET) to 1659 which is the world's longest instrumental record, and my own reconstruction from that date to 1538.

As far as «hidden» ones go, where the averaged instrumental record shows nothing that reaches our benchmark but the end result does, we have two identified to date; the 1960/70's and the mid 1800's where the winters became noticeably milder as noted by Noah Webster of Dictionary fame.

To produce temperature series that were completely up - to - date (i.e. through to 1999) it was necessary to combine the temperature reconstructions with the instrumental record, because the temperature reconstructions from proxy data ended many years earlier whereas the instrumental record is updated every month.

It was this latter date when the CET instrumental records began, and we can usefully bookend this era with two pieces of observational climate information.

Dr Mann, together with colleagues Bradley and Hughes, used instrumental data from 1902 to 1998, (the date of the study) together with a variety of proxies such as tree rings, in order to reconstruct a Northern Hemisphere record of temperature anomalies back to the year 1400.

A warming trend can be observed from 1659, the start date of Central England Temperature (CET)- the oldest instrumental record in the world - to today.

Digitised records for the whole country date back to 1910 and data for the Central England Temperature record dates back to 1654 - the world's longest instrumental record.