And then there is the satellite data that shows even with an emerging El Nino, the so called global warming temperature pause continues. Warming since 1900 is .8C/century while warming since 1950 when according to the IPCC man began to have a measurable effect on global temperature is 1.2C/century.
El Niño strengthens: the Pause lengthens
Global temperature update: no warming for 18 years 6 months
By Christopher Monckton of Brenchley
For 222 months, since December 1996, there has been no global warming at all (Fig. 1). This months RSS temperature still unaffected by a slowly strengthening el Niño, which will eventually cause temporary warming passes another six-month milestone, and establishes a new record length for the Pause: 18 years 6 months.
What is more, the IPCCs centrally-predicted warming rate since its
First Assessment Report in 1990 is now more than two and a half times the measured rate. On any view, the predictions on which the entire climate scare was based were extreme exaggerations.
However, it is becoming ever more likely that the temperature increase that usually accompanies an el Niño may come through after a lag of four or five months. The Pause may yet shorten somewhat, just in time for the Paris climate summit, though a subsequent La Niña would be likely to bring about a resumption of the Pause.
Figure 1. The least-squares linear-regression trend on the RSS satellite monthly global mean surface temperature anomaly dataset shows no global warming for 18 years 6 months since December 1996.
The hiatus period of 18 years 6 months is the farthest back one can go in the RSS satellite temperature record and still show a sub-zero trend. Note that the start date is not cherry-picked: it is calculated. And the graph does not mean there is no such thing as global warming. Going back further shows a small warming rate.
The divergence between the models predictions in 1990 (Fig. 2) and 2005 (Fig. 3), on the one hand, and the observed outturn, on the other, continues to widen. For the time being, these two graphs will be based on RSS alone, since the text file for the new UAH v.6 dataset is not yet being updated monthly. However, the effect of the recent UAH adjustments exceptional in that they are the only such adjustments I can recall that reduce the previous trend rather than steepening it is to bring the UAH dataset very close to that of RSS, so that there is now a clear distinction between the satellite and terrestrial datasets, particularly since the latter were subjected to adjustments over the past year or two that steepened the apparent rate of warming.
Figure 2. Near-term projections of warming at a rate equivalent to 2.8 [1.9, 4.2] K/century, made with substantial confidence in IPCC (1990), for the 305 months January 1990 to May 2015 (orange region and red trend line), vs. observed anomalies (dark blue) and trend (bright blue) at less than 1.1 K/century equivalent, taken as the mean of the RSS and UAH v. 5.6 satellite monthly mean lower-troposphere temperature anomalies.
Figure 3. Predicted temperature change, January 2005 to May 2015, at a rate equivalent to 1.7 [1.0, 2.3] Cº/century (orange zone with thick red best-estimate trend line), compared with the near-zero observed anomalies (dark blue) and real-world trend (bright blue), taken as the mean of the RSS and UAH v. 5.6 satellite lower-troposphere temperature anomalies.
The Technical Note explains the sources of the IPCCs predictions in 1990 and in 2005, and also demonstrates that that according to the ARGO bathythermograph data the oceans are warming at a rate equivalent to less than a quarter of a Celsius degree per century.
Key facts about global temperature
- The RSS satellite dataset shows no global warming at all for 222 months from December 1996 to May 2015 more than half the 437-month satellite record.
- The entire RSS dataset from January 1979 to date shows global warming at an unalarming rate equivalent to just 1.2 Cº per century.
- Since 1950, when a human influence on global temperature first became theoretically possible, the global warming trend has been equivalent to below 1.2 Cº per century.
- The global warming trend since 1900 is equivalent to 0.8 Cº per century. This is well within natural variability and may not have much to do with us.
- The fastest warming rate lasting 15 years or more since 1950 occurred over the 33 years from 1974 to 2006. It was equivalent to 2.0 Cº per century.
- In 1990, the IPCCs mid-range prediction of near-term warming was equivalent to 2.8 Cº per century, higher by two-thirds than its current prediction of 1.7 Cº/century.
- The warming trend since 1990, when the IPCC wrote its first report is equivalent to 1.1 Cº per century. The IPCC had predicted two and a half times as much.
- Though the IPCC has cut its near-term warming prediction, it has not cut its high-end business as usual centennial warming prediction of 4.8 Cº warming to 2100.
- The IPCCs predicted 4.8 Cº warming by 2100 is well over twice the greatest rate of warming lasting more than 15 years that has been measured since 1950.
- The IPCCs 4.8 Cº-by-2100 prediction is four times the observed real-world warming trend since we might in theory have begun influencing it in 1950.
- The oceans, according to the 3600+ ARGO bathythermograph buoys, are warming at a rate of just 0.02 Cº per decade, equivalent to 0.23 Cº per century.
- Recent extreme-weather events cannot be blamed on global warming, because there has not been any global warming to speak of. It is as simple as that.
Technical note
Our latest topical graph shows the least-squares linear-regression trend on the RSS satellite monthly global mean lower-troposphere dataset for as far back as it is possible to go and still find a zero trend. The start-date is not cherry-picked so as to coincide with the temperature spike caused by the 1998 el Niño. Instead, it is calculated so as to find the longest period with a zero trend.
http://www.climatedepot.com/2015/06...ses-to-a-new-record-length-18-years-6-months/
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