Sentences with phrase «century than the hockey stick»

Some show far more variability leading up to the 20th century than the hockey stick, but none suggest that it has been warmer at any time in the past 1000 years than in the last part of the 20th century.

Not exact matches

The National Academy of Sciences supported the key point of your hockey stick calculation, which showed higher temperatures in the 20th century than in the previous thousand years, but others criticized you for not releasing the information behind it.

The CETR also shows a stronger hockey - stick shape than the central England series used by MBH98, in part because it includes earlier data (from the late 17th century) than the Bradley and Jones dataset.

It's the latest research in more than a decade of work producing a climate «hockey stick» — graphs of global or regional temperatures showing relatively little variation over a millennium or more and then a sharp uptick since the middle of the twentieth century (the blade at the end of the stick).

These other reconstructions do tend to show some more variability than MBH98, ie the handle of the hockey stick is not as straight, but they * all * support the general conclusions that the IPCC TAR came to in 2001: the late 20th century warming is anamolous in the last one or two thousand years and the 1990's are very likely warmer than any other time in the last one or two thousand years.»

I beleive it is likely that the Hockey Stick shows less variability than there actually was, other reconstructions seem to show this, but the major findings were the most important (ie how the late 20th century fits in).

They tend to show more variability than the original hockey stick (their sticks are not as straight), but they all support the general conclusions the IPCC TAR presented in 2001: late 20th century warming is anomalous in the last one or two thousand years, and the 1990s were likely warmer than any other time in that period.

Kaufman et al. (2009) reconstructed Arctic temperatures even further back in time than shown in Figure 5, and confirmed that the Arctic had been cooling for at least the past 2,000 years prior to the 20th Century, and found an Arctic temperature «hockey stick» (Figure 5).

This article illustrates some cases of a true temperature history more like a double peak than a hockey stick over the past century.

3) Unless very unusually different from the temperature data sources commonly used by publications like this, the reported Southwestern U.S. temperature history has probably been fudged towards the hockey stick version depicted, rather than twin peaks in the 20th century, in a similar manner to U.S. average temperature history (examples in the prior link, comparing versus older sources before they were rewritten).

The new findings are the latest round in a politically charged dispute over the «hockey stick,» a widely publicized graphic showing that temperatures during the late 20th century were likely higher than at any time in the past 1,000 years.

McIntyre and McKitrick were able to show that the Hockey Stick chart was based on cherry picked use of data, failed to comply with accepted standards in statistics and signal processing, and ignored compelling evidence for the Medieval Warm Period where historical records demonstrate that it was just as warm, if not warmer, then than the 20th century.

Didn't mention this before, but in addition to providing some very interesting insight into early 16th century temperatures based on the CET record, which corrects some of the misconceptions of the hockey stick, you have made it all interesting reading rather than just a «data dump».

Ed (# 26), The CO2 «hockey stick» arguably starts in the 1870s when the second industrial revolution was in full swing rather than in the 20th century.