by S.J. Crockford, October 31, 2018 in ClimateChangeDispatch
What’s a good analogy for sea ice as essential polar bear habitat? Biologist Andrew Derocher claims that the soil in a forest is appropriate because without the soil you can’t have the forest ecosystem.
However, that’s a specious comparison because the amount of soil in a forest does not change markedly with the seasons the way that Arctic sea ice does.
A much better analogy is a big pond that dries up a bit every summer. The amount of habitat available to sustain aquatic plants, amphibians and insects is reduced in the dry season but many species have special adaptations for surviving reduced water availability.
by Hong Yan et al., November 2014, in ChineseSciBull
The large-scale syntheses of global mean temperatures in IPCC fourth report suggested that the Northern Hemisphere temperature in the second half of the 20th century was likely the highest in at least the past 1,300 years and the 1990s was likely the warmest decade. However, this remains debated and the controversy is centered on whether temperatures during the recent half century were higher than those during the Medieval Climate Anomaly (MCA, AD 800–1300) and the Roman Warm Period (RWP, BC 200–AD 400), the most recent two natural warm periods of the late Holocene. Here the high resolution sea surface temperatures (SSTs) of two time windows around AD 990 (±40) and AD 50 (±40), which located in the MCA and RWP respectively, were reconstructed by the Sr/Ca ratio and δ 18O of Tradacna gigas shells from the northern South China Sea. The results suggested that the mean SSTs around AD 990 (±40) and AD 50 (±40) were 28.1 °C and 28.7 °C, 0.8 °C and 1.4 °C higher than that during AD 1994–2005, respectively. These records, together with the tree ring, lake sediment and literature records from the eastern China and northwest China, imply that the temperatures in recent decades do not seem to exceed the natural changes in MCA, at least in eastern Asia from northwest China to northern SCS.
by JP Riou, 9 octobre 2018 in EuropeanScientist
L’ écologie a renoué avec l’environnement le lien fondamental et sacré qui le relie à l’homme. Par cette communion, elle remplit le vide laissé par les religions dans un contexte d’explosion technologique. Mais elle fait semblant d’ignorer que le fossé s’élargit de toutes parts entre la déclinaison politique de ses principes et le bilan de ses résultats.
La dimension mondiale du phénomène et les sommes inédites qui lui sont consacrées justifient une tentative d’analyse de son origine et de sa démarche, ainsi que de ses ressorts cachés et des conséquences géopolitiques qu’on peut en attendre.
Ces 2 faces de l’écologie politique sont l’objet des 2 parties du présent article.
Pour la première parie voir ici
by Penny Peiser, October 3, 2018 in GWPF
The Version 6.0 global average lower tropospheric temperature (LT) anomaly for September 2018 was +0.14 deg. C, down a little from +0.19 deg. C in August. This was the coolest September in the last 10 years in the global average. — Roy Spencer, 2 October 2018
by Tim Ball, September 29, 2018 in WUWT
In media interviews or discussions with the public, the most frequent opening challenge is; “But don’t 97% of scientists agree?” It is usually said obliquely to imply that you know a lot, and I don’t understand, but I assume you are wrong because you are in the minority. I don’t attempt to refute the statistics. Instead, I explain the difference in definitions between science and society. Then I point out that the critical 97% figure is that at least 97% of scientists have never read the claims of the IPCC Reports. How many people reading this article have read all the IPCC Reports, or even just one of them? If you have, it is probably the deliberately deceptive Summary for Policymakers (SPM). Even fewer will have read the Report of Working Group I: The Physical Science Basis. Naively, people, especially other scientists, assume scientists would not falsify, mislead, misrepresent, or withhold information. It is worse, because the IPCC deliberately created the false claim of consensus.
by Tony Heller, from Mc. Hogg, August 24,2018 in TheDeplorableClimateScienceBlog
Climate scientists acknowledge that CO2 follows rather than leads temperature, but they insist that feedback loops drive the transitions from glacial to interglacial conditions.
by Dr. R. Pielke, August 14, 2018 in ClimateChangeDispatch
In his posthumously published book “Factfulness,” the Swedish statistician Hans Rosling describes a paradox: “The image of a dangerous world has never been broadcast more effectively than it is now, while the world has never been less violent and more safe.”
A case in point: natural disasters. The earth will always be volatile, but despite recent fires, volcanoes, and hurricanes, humanity currently is experiencing a stretch of good fortune when it comes to disasters.
It’s difficult to be “factful” about disasters—the vivid trauma of each event distracts observers from the long-term decrease in destructiveness.
But climate activists make the problem worse by blaming every extreme weather event on human-caused climate change, hoping to scare people into elevated concern.
by G. Gueskens and A. Préat, 31 juillet 2018, in ClimateScienceEnergie
Cela fait un an, le 31 juillet 2017, que le Professeur Istvan Marko nous quittait prématurément à l’âge de 61 ans.
Ce scientifique, chimiste, était un de ceux qui était le plus écouté à l’échelle nationale et internationale, pour ses avis pertinents sur les problèmes climatiques d’aujourd’hui, aussi bien sous l’angle scientifique que celui de leurs emballements médiatiques. Nous lui avons rendu hommage il y a un an à travers un numéro spécial dédié à sa personne, et poursuivons son action dans l’esprit qui fut toujours le sien , celui de la rigueur scientifique.
by David Middleton, June 19,2018 in WUWT
by University of Warwick, April 21, 2018 in ScienceDaily
The famous Oxford Dodo died after being shot in the back of the head, according to new research. Using revolutionary forensic scanning technology and world-class expertise, researchers have discovered surprising evidence that the Oxford Dodo was shot in the neck and back of the head with a shotgun.
The significant and unexpected findings, made by Professor Paul Smith, director of the Museum of Natural History, and Professor Mark Williams from WMG at the University of Warwick, only became apparent when mysterious particles were found in the specimen during scans carried out to help analyse its anatomy.
by Mark Fife, April 19, 2018 in WUWT
In today’s post I am going to go over how I went about creating a reconstruction of the history of temperature from the GHCN data sets using a variable number of stations reporting each year for the years of 1900 to 2011. Before I go into the details of that reconstruction, let me cover how I went about discarding some alternative methods.
I decided to create a test case for reconstruction methods by picking five random, complete station records. I then deleted a portion of one of those records. I mimicked actual record conditions within the GHCN data so my testing would be realistic. In different trials I deleted all but the last 20 years, all but the first 20 years or some number of years in the middle. I tried normalizing each station to its own average and averaging the anomalies. I tried averaging the four complete stations, then normalizing the fourth station by its average distance from the main average. In all cases when I plotted the reconstruction against the true average the errors were quite large.normalizing the fourth station by its average distance from the main average. In all cases when I plotted the reconstruction against the true average the errors were quite large.
by Susanna Twidale, April 2018 in Reuters
LONDON (Reuters) – Emissions regulated under Europe’s carbon market rose for the first time in seven years in 2017 due to stronger industrial output, data published on Tuesday by the European Commission and examined by carbon analysts at Thomson Reuters showed (…)
by Climate Feedback, April 4, 2018
CLAIM: “There isn’t any warming. All they’ve got is computer model predictions, folks. There isn’t yet any empirical evidence for their claim that greenhouse gases even cause temperatures to increase. There isn’t any empirical data for that.”