Archives par mot-clé : Warming Hiatus

GLOBAL TEMPERATURE IN 2017: NOT A RESURGENCE OF GLOBAL WARMING

by Dr David Whitehouse, January 17, 2018 in GWPF


It is clear that 2017 was a very warm year. Tomorrow, NOAA, NASA and the UK Met Office will announce by how much. It won’t be a record-breaker, but it will be in the top five, and that has already started comments about why it has been so hot. After all, the record-setting El Niño temperatures of the 2015-16 are over – so why did it remain so hot? The reason, according to some, is clear: the resurgence of global warming. The year 2017 is the hottest non-El Niño year ever and therefore signifies a dramatic increase of global warming after 20-years or so when the global temperature hasn’t done very much.

Most Modern Warming, Including For Recent Decades, Is Due To Solar Forcing, Not CO2

by Kenneth Richard, November 9, 2017 in NoTricksZone


Though advocates of the dangerous anthropogenic global warming (AGW) narrative may not welcome the news, evidence that modern day global warming has largely been driven by natural factors – especially solar activity – continues to pile up.

Much of the debate about the Sun’s role in climate change is centered around reconstructions of solar activity that span the last 400 years, which now include satellite data from the late 1970s to present.

NOAA’s USCRN Revisited – no significant warming in the USA in 12 years

by Willis Eschenbach, November 8, 2017, in WUWT


Back in 2014, Anthony put up a post called “NOAA shows ‘the pause’ in the U.S. surface temperature record over nearly a decade“. In it, he discussed the record of the US Climate Reference Network (USCRN). I can’t better Anthony’s description of the USCRN, so I’m stealing it to use here: (…)

See also here

Radiation Transfer Calculations and Assessment of Global Warming by CO2

by Hermann Harde, March 30, 2017 in Inter.J.Atm.Sciences


Including solar and cloud effects as well as all relevant feedback processes our simulations give an equilibrium climate sensitivity of = 0.7°C (temperature increase at doubled CO2) and a solar sensitivity of = 0.17°C (at 0.1% increase of the total solar irradiance). Then CO2 contributes 40% and the Sun 60% to global warming over the last century.

Natural climate variability, part 2: Interpretation of the post 2000 temperature standstill

by N. Scaffetta et al., September1, 2017 in Int.J.Heat.Technology


The period from 2000 to 2016 shows a modest warming trend that the advocates of the anthropogenic global warming theory have labeled as the “pause” or “hiatus.” These labels were chosen to indicate that the observed temperature standstill period results from an unforced internal fluctuation of the climate (e.g. by heat uptake of the deep ocean) that the computer climate models are claimed to occasionally reproduce without contradicting the anthropogenic global warming theory (AGWT) paradigm. In part 1 of this work, it was shown that the statistical analysis rejects such labels with a 95% confidence because the standstill period has lasted more than the 15 year period limit provided by the AGWT advocates themselves.

See also here

Le hiatus ? Pas de quoi en faire un fromage, ni une publi

in Benoît Rittaud, 26 septembre 2017 in M,M&M


L’incroyable nouvelle a été annoncée par Mathieu Vidard dans l’émission La Tête au carrésur France Inter, le 20 septembre 2017 (ici, très brièvement, à partir de 10’, il faut bien viser) :

Maintenir le réchauffement climatique en dessous de 1,5°C, c’est encore possible, c’est l’objectif qui avait été fixé par les Accords de Paris à l’issue de la COP 21. La bonne nouvelle vient d’une équipe de recherche internationale. D’après leurs analyses, l’ampleur du réchauffement climatique qui a déjà eu lieu a été surestimée et la quantité de carbone que l’humanité peut émettre à partir de 2015 en restant en-dessous de ce seuil de 1,5°C serait trois fois supérieure à ce qui avait été annoncé.

Why ‘Hide The Decline’? There Has Been No Net NH Warming Since The 1940s

by Kenneth Richard, August 31, 2017 in NoTricksZone


In the press release for a newly published and controversial  peer-reviewed scientific paper, Australian scientist Dr. Jennifer Marohasy unveiled one of climate science’s better-kept secrets.

She and her colleagues are well aware that the post-1940s Northern Hemisphere (NH)  proxy evidence from tree-rings, bore holes, pollen, etc., consistently fails to affirm sharply rising temperatures from the late 20th century onwards.

Warm periods in the 20th century are not unprecedented during the last 2,000 years

by Prof. Quansheng Ge, August 8, 2017 in ClimateChangeDispatch


Prof. Quansheng Ge and his group from the Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, collected a large number of proxies and reconstructed a 2000-year temperature series in China with a 10-year resolution, enabling them to quantitatively reveal the characteristics of temperature change in China over a common era.

See also here

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?