Archives par mot-clé : Warming Hiatus

The ‘hiatus’ in global warming is the hottest topic in climate science right now, whether alarmists like it or not

by David Whitehouse, June 22, 2017 in Financial Post


Few things illustrate the poor state of the communication of climate science better than the reaction to Environmental Protection Agency Administrator Scott Pruitt’s comments about global temperatures in the past 20 years. It was made in written comments to the Senate following his confirmation hearing. He wrote, “over the past two decades satellite data indicates there has been a leveling off of warming.” Has the temperature increase of the Earth’s surface and lower atmosphere “stalled” in the past 20 years or so? Does this change our view of climate change?

China Met Office Confirms Global Warming Hiatus

by Dr David Whitehouse, July 4, 2017 in GWPF


The China Meteorological Administration (CMA) has recently developed a new global monthly land-surface air temperature data set called CMA GLSAT. Using it researchers from the administration reanalysed the change in global annual mean land-surface air temperature during three time periods (1901–2014, 1979–2014 and 1998–2014) to see if there was any evidence of a hiatus or pause in recent surface global warming.

The researchers find very clear evidence for the recent warming hiatus. Their results show linear trends of 0.104 °C per decade, 0.247 °C per decade and 0.098 °C per decade for the three periods, respectively. The trends were statistically significant except for the period 1998–2014, the period that is also known as the ‘‘warming hiatus”.

The truth about the global warming pause

by David Whitehouse, June 29, 2017


Between the start of 1997 and the end of 2014, average global surface temperature stalled. This 18-year period is known as the global warming pause, also sometimes referred to as the global warming hiatus. The rise in global temperatures that alarmed climate campaigners in the 1990s had slowed so much that the trend was no longer statistically significant. It has been the subject of much research and debate in peer-reviewed scientific journals.

More Evidence of the Great 21st Century Warming Pause

by Y. Xie, J. Huang and Y. Liu, June 26, 2017 in CO2Science


One of the many conundrums facing climate alarmists — who predict that dangerous future global warming will result from increasing concentrations of atmospheric CO2 — is the existence of the aptly-named « warming hiatus. » Also referred to as the « warming pause, » this phenomenon describes a nearly two-decade-long leveling off of global temperatures despite a ten percent increase in atmospheric COconcentration since 1998. The significance of these observations resides in the fact that all climate models project that temperatures should not be levelling off, but should be increasing (despite interannual variability) in direct consequence of the ongoing rise in atmospheric CO2.

The ‘hiatus’ in global warming is the hottest topic in climate science right now, whether alarmists like it or not

by David Whitehouse,  Financial Post, June 22, 2017


Some are adamant that the “hiatus” does not and never has existed, and will never change their minds. But the evidence is irrefutable. As a large number of influential climate scientists have just said in the journal Nature Geoscience, since the turn of the century there has been a substantial slowdown in warming that computer climate models did not predict or can explain. In fact, such models predict a warming twice that observed.

Les modèles du réchauffement global sont faux, la « pause » est réelle, reconnaît Ben Santer, alarmiste du climat

by Reinformation.TV, 21 juin 2017


Un papier scientifique publié cette semaine par Nature Geoscience du groupe « Nature », peu suspect de complaisance à l’égard des climatoceptiques, constate que le réchauffement climatique a été surestimé par les modèles de prédiction qui justifient l’action concertée contre les émissions de gaz à effet de serre. L’article a la particularité d’avoir pour auteur principal Ben Santer, l’un des pionniers du mouvement qui accuse l’activité humaine du réchauffement climatique.

Recent pause in the growth rate of atmospheric CO2 due to enhanced terrestrial carbon uptake

by Keenan et al., November 8, 2016, Nature


Terrestrial ecosystems play a significant role in the global carbon cycle and offset a large fraction of anthropogenic CO2 emissions. The terrestrial carbon sink is increasing, yet the mechanisms responsible for its enhancement, and implications for the growth rate of atmospheric CO2, remain unclear.

 

web- Comments

Jim McIntosh , David Mulberry and 2 others posted in Air-Climate-Energy  (Jim McIntosh 9 May at 11:18):   Reposting because those AGW alarmists hate this report. Yes, plants are doing it better than any carbon tax and they do it for free… as long as we don’t cut them down. You’d think we’d learn by now that managing climate comes back to how we have mismanaged the planet’s forests.

 

NEW STUDY CONFIRMS: THE WARMING ‘PAUSE’ IS REAL AND REVEALING

by Dr David Whitehouse, GWPF Science Editor, May 4, 2017


A new paper has been published in the Analysis section of Nature called Reconciling controversies about the ‘global warming hiatus.’ It confirms that the ‘hiatus’ or ‘pause’ is real. It is also rather revealing.

It attempts to explain the ‘Pause’ by looking into what is known about climate variability. They say that four years after the release of the IPCC AR5 report, which contained much about the ‘hiatus’ it is time to see what can be learned.

One could be a little sarcastic in saying why would Nature devote seven of its desirable pages to an event that some vehemently say never existed and maintain its existence has been disproved long ago. Now, however, as the El Nino spike of the past few years levels off, analysing the ‘pause’ seems to be coming back into fashion.