by JoNova, December 5, 2017
The scope of our ignorance on the sea floor is really something. There are 1,500 active volcanoes on land, but on the sea floor we are still discovering them all the time. at least 39,000 of them rise one kilometer off the sea floor, but there are suspicions there might be up to 3 million, holey moley. The Hilliers paper estimates that 24,000 submarine volcanoes were not yet discovered in 2007. Wikimedia is trying to list them. Good luck.
by P. Gosselin, December 3, 2017 in NoTricksZone
By now, after some 30 years of dire warnings, you’d think that the warming of the globe and ice mass reduction would be much further along than it actually is. Yet there are a number of major signs that show the opposite (cooling and freezing) are happening (…)
by Ron Clutz, December 2, 2017 in ScienceMatters
Earlier observations showed that Arctic ice extents were low in the 1940s, grew thereafter up to a peak in 1977, before declining. That decline was gentle until 1994 which started a decade of multi-year ice loss through the Fram Strait. There was also a major earthquake under the north pole in that period. In any case, the effects and the decline ceased in 2007, 30 years after the previous peak. Now we have a plateau in ice extents, which could be the precursor of a growing phase of the quasi-60 year Arctic ice oscillation.
See also here
by UAH and Dr. J. Christy in A. Watts, December 4, 2014 in WUWT
The average global temperature drop between October and November, 2017, tied for the fifth largest one-month-to-the-next drop in the 39-year satellite temperature record, according to Dr. John Christy, director of the Earth System Science Center (ESSC) at The University of Alabama in Huntsville. Compared to seasonal norms, the average temperature around the globe fell 0.27 C (almost 0.49 degrees F) between October and November. (The largest drop was from January to February 2013, when the global average temperature fell 0.32 C.)
by Rupert Darwall, November 28, 2017 in CompetitiveEnterpriseInstitut
This essay by Rupert Darwall explores the expressions of public certainty by climate scientists versus the private expressions of uncertainty, in context of a small Workshop on Climate organized by t he American Physical Society (APS). I was privileged to participate in this workshop, which included three climate scientists who support the climate change consensus and three climate scientists who do not — all of whom were questioned by a panel of disting uished physicists (…).
by Uzbek, 21 novembre 2017, in Climato-Réalistes
Les prévisions climatiques à très long terme (2100) sont établies à l’aide de modèles qui ne sont rien d’autre des logiciels très complexes, dont le but est de reproduire le comportement du climat terrestre.
Comme on ne peut pas décrire ce qui se passe en tous les points de la terre, celle-ci est découpée en mailles de quelques centaines de kilomètres de côté. Les modèles utilisés par le GIEC pour son cinquième rapport d’évaluation (2013) avaient des résolutions relativement grossières (supérieures à 100 km). La situation évolue toutefois rapidement et les modèles climatiques les plus récents auraient une résolution plus fine (de l’ordre de 20 km).
Egalement ici et ici
by Connaissances des Energies, 28 juillet 2017
La Banque mondiale a présenté le 18 juillet une étude soulignant les énormes besoins de minerais et de métaux associés à la transition « bas carbone » dans le monde. Un aspect souvent ignoré de cette transition.
Voir également ici
by Anthony Watts, November 29, 2017 in WUWT
New research yields old result: Climate warming slow, steady. Observed value is half that of CMIP5 climate models.
The rate at which Earth’s atmosphere is warming has not significantly accelerated over the past 23 years, according to research at The University of Alabama in Huntsville (UAH).
If you take away the transient cooling in 1983 and 1992 caused by two major volcanic eruptions in the preceding years, the remaining underlying warming trend in the bottom eight kilometers (almost five miles) of the atmosphere was 0.096 C (about 0.17° Fahrenheit) per decade between January 1979 and June 2017.
That was unexpectedly close to the 0.09 C warming trend found when similar research was published in 1994 with only 15 years of data, said Dr. John Christy, director of UAH’s Earth System Science Center.
See also here
by A Matthews and M Duell, November 29, 2017 in MailOnline
Widespread frost and snowfall is on the way with temperatures plummeting in London by this evening
Parts of Scotland could fall to -10C (14F), lower than the -8C forecast in Lapland and OC in St Petersburg
Met Office has issued ice warnings for northern Scotland and England with 2in inches of snow set to fall
Snow is also forecast for North East England tomorrow including up to 4in on the North York Moors
by P. Homewood, November 28, 2017 in NotaLotofpeopleKnowThat
We are all too familiar with graphs showing how much global temperatures have risen since the 19thC.
The HADCRUT version above is typical, and also very precise, with fairly tight error bars even in the early part of the record.
One wonders where they got the data to work all this out, because it certainly could not have come from thermometers.
All of the major global temperature datasets rely heavily on the Global Historical Climatology Network (GHCN). Yet as the “Overview of the Global Historical Climatology Network-Daily Database”, published by Matthew Menne et al in 2012, rather inconveniently showed, most of the world had little or no temperature data in the 19thC, and even up to 1950.