by F. Pretis and M. Roser, June 2017, Energy, Elsevier
The wide range of socio-economic scenarios in climate projections results in high uncertainty about climate change.
We compare socio-economic scenario projections to observations over 1990–2010.
Global CO2 emission intensity increased despite all major scenarios projecting a decline.
Under-projection of emission intensity raises concerns about achieving emission targets.
by Habibullo I. Abdussamatov +125/et al., November 29, 2012, in Washington Post
On November 13, 2012, you said at Yale: “The science is clear; we should waste no more time on that debate.”
We the undersigned, qualified in climate-related matters, wish to state that current scientific knowledge does not substantiate your assertions.
by Kenneth Richard, September 7, 2017 in NoTricksZone
This modern rate – just 0.17-0.18 of a meter per century – has remained relatively unchanged from the overall 20th century average, and there has been no statistically significant acceleration in the sea level rise rate (just 0.0042 mm/yr-²) since 1900.
by P. Gosselin, August 16, 2017 in NoTricksZone
Weather and climate analyst Schneefan here writes of “early frost” in the Arctic and how Greenland snow and ice have grown after being hit by a “snow bomb”. This contradicts the expectations of global warming alarmists.
The polar summer this year appears to have ended prematurely. The mean temperature of the central Arctic above 80°N has remained under the long-term average over the entire summer and even dipped below the freezing point about a week earlier than normal (1958-2002 mean).
by Michel de Rougemont, September 4, 2017 in WUWT
Various sources, scientists publishing their opinion in the media, claim that Tropical Storm Harvey, recently landed in Texas, is one more signal of the influence of global warming on such catastrophic events. These claims are based on model calculations. Let’s examine the facts.
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.
by P. Gosselin, September 1, 2017 in NoTricksZone
Way back in February, Global Weather Oscillations (GWO) veteran meteorologist David Dilley predicted that the 2017 Atlantic hurricane season would be “the most dangerous and costliest in 12 years for the United States.” (…)
by Susan Crockford, Polar Bear Science, 23 August 2017
What is causing the death of the polar bear as a climate change icon? Fat bears are part of it, but mostly it’s the fact that polar bear numbers haven’t declined as predicted.
by Nils-Axel Mörner, August 5, 2017, in J. Eng.Sci.Invention
Sea level changes is a key issue in the global warming scenario. It has been widely claimed that sea is rising as a function of the late 20th’s warming pulse. Global tide gauge data sets may vary between +1.7 mm/yr to +0.25 mm/yr depending upon the choice of stations. At numerous individual sites, available tide gauges show variability around a stable zero level …
… In this situation, it is recommended that we return to the observational facts, which provides global sea level records varying between ±0.0 and +1.0 mm/yr; i.e. values that pose no problems in coastal protection.
See also here
by Jennifer Marohasy, August 21, 2017
AFTER deconstructing 2,000-year old proxy-temperature series back to their most basic components, and then rebuilding them using the latest big data techniques, John Abbot and I show what global temperatures might have done in the absence of an industrial revolution. The results from this novel technique, just published in GeoResJ, accord with climate sensitivity estimates from experimental spectroscopy but are at odds with output from General Circulation Models.
by Tony Heller, August 21, 2017 in ClimateChangeDispatch
Last year, experts announced that the Arctic would be ice-free in 2017.
by Werner Brozek, August 20, 2017 in WUWT
In order to determine if records are possible in 2017, one must know the previous records as well as the average to date and what is required for the rest of the year in order for a particular data set to set a new record.
For the five data sets I cover, records were set in 2016. For now, I am not concerned about the statistical significance of the records, nor the number of decimal places. I merely want to know if the record can be beaten this year. At the end of the year, I plan on reporting any records and how statistically significant they are.
by Roy W. Spencer, Ph. D., August 19, 2017 in GlobalWarming
Al Gore has provided a target-rich environment of deceptions in his new movie.
After viewing Gore’s most recent movie, An Inconvenient Sequel: Truth to Power, and after reading the book version of the movie, I was more than a little astounded. The new movie and book are chock-full of bad science, bad policy, and factual errors.
by Dr. Ronan Connolly & Dr. Michael Connolly, August 16, 2017 in WUWT
Satellite observations indicate that the average Arctic sea ice extent has generally decreased since the start of the satellite records in October 1978. Is this period long enough to assess whether the current sea level trend is unusual, and to what extent the decline is caused by humans?
This change in Arctic climate is often promoted as evidence that humans are causing drastic climate change. For instance, an April 29th 2017 article in the Economist (“Skating on thin ice”, pg 16) implied that the Arctic is melting unusually, dramatically and worryingly (…)
by Kip Hansen, August 16, 2017
“Since there is no universally accepted definition for Earth’s average temperature, several different groups around the world use slightly different methods for tracking the global average over time, including:
NASA Goddard Institute for Space Studies
NOAA National Climatic Data Center
UK Met Office Hadley Centre”