by J.A. Marusek, February 2018, in WUWT
The sun is the natural source of heat and light for our planet. Without our sun, the earth would be a cold dead planet adrift in space. But the sun is not constant. It changes and these subtle changes affect the Earth’s climate and weather.
At the end of solar cycle 23, sunspot activity declined to a level not seen since the year 1913. [Comparing Yearly Mean Total Sunspot Numbers1]
The following was observed during the solar cycle 24: (…)
by P. Gosselin, February 2, 2018 in NoTricksZone
Over the past months a spate of scientific papers published show sea level rise has not accelerated like many climate warming scientists warned earlier. The reality is that the rise is far slower than expected, read here and here
by Sheldon Walker, February 3, 2018 in WUWT
I recently read an article by Tamino aka Grant Foster of Portland, ME, called “Global Warming: the Relentless Trend“.
Many of the points that he made annoyed me, and I started to write an article to document his many errors. Half way through the article, I suddenly realised that some of the issues that skeptics and warmists argue about, like slowdowns and pauses, are caused by the terminology, and the definitions of the words that we use.
So that you can enjoy how I was going to trash Tamino’s article, I will leave in the half of the article that I had already written, before I had my revelation.
by U. of Kansas, February 2, 2018 in WUWT, A. Watts
On a ho-hum day some 12,800 years ago, the Earth had emerged from another ice age. Things were warming up, and the glaciers had retreated.
Out of nowhere, the sky was lit with fireballs. This was followed by shock waves.
Fires rushed across the landscape, and dust clogged the sky, cutting off the sunlight. As the climate rapidly cooled, plants died, food sources were snuffed out, and the glaciers advanced again. Ocean currents shifted, setting the climate into a colder, almost “ice age” state that lasted an additional thousand years.
Finally, the climate began to warm again, and people again emerged into a world with fewer large animals and a human culture in North America that left behind completely different kinds of spear points.
by A Watts, September 10, 2009 in WUWT
UPDATED: This opinion piece from Professor Henrik Svensmark was published September 9th in the Danish newspaper Jyllands-Posten. Originally the translation was from Google translation with some post translation cleanup of jumbled words or phrases by myself. Now as of Sept 12, the translation is by Nigel Calder. Hat tip to Carsten Arnholm of Norway for bringing this to my attention and especially for translation facilitation by Ágúst H Bjarnason – Anthony
by Ron Clutz, January 31, 2018 inClimateChangeDispatch
The question could be paraphrased in these words: Why are there differences between various graphs that report changes in global temperatures?
The short answer is: The differences arise both from what is measured and how the measurements are processed. (…)
by Javier, January 30, 2018 in AndyMay WUWT
Climate change is a reality attested by past records. Concerns about preparing and adapting for climate change are real. However, the idea that we can prevent climate change from happening is dangerous and might be anti-adaptive. Certain energy policies that might have no effect on climate change could make us less able to adapt.
Physics shows that adding carbon dioxide leads to warming under laboratory conditions. It is generally assumed that a doubling of CO2 should produce a direct forcing of 3.7 W/m2 , that translates to a warming of 1°C (by differentiating the Stefan-Boltzmann equation) to 1.2°C (by models taking into account latitude and season). But that is a maximum value valid only if total energy outflow is the same as radiative outflow. As there is also conduction, convection, and evaporation, the final warming without feedbacks is probably less. Then we have the problem of feedbacks that we don’t know and cannot properly measure. For some of the feedbacks, like cloud cover we don’t even know the sign of their contribution. And they are huge, a 1% change in albedo has a radiative effect of 3.4 W/m2 , almost equivalent to a full doubling of CO2.
by Uzbek, 24 janvier 2018 in ClimatEnv&Energie
Dans un communiqué du 18 janvier 2018, l’OMM (Organisation météorologique mondiale) classe 2017 dans les trois années les plus chaudes depuis le début des mesures. Le record reste détenu par l’année 2016 (+ 1,2° C au-dessus des températures de la période pré industrielle) suivie par l’année 2015 (+ 1,1° C) toutes deux influencées par un épisode El Niño intense.
L’année 2017 serait ainsi l’année la plus chaude sans influence d’un phénomène El Niño. L’OMM suggère ainsi une reprise du réchauffement mondial après une pause des températures de plus de 17 ans.
by E. Calvin Beisner, January 29, 2018 in WUWT
The National Oceanic and Atmospheric Administration’s (NOAA) press release headline January 18 was blunt: “NOAA: 2017 was 3rd warmest year on record for the globe.” The tagline that followed made the inference obligatory for all climate alarmists: “NOAA, NASA scientists confirm Earth’s long-term warming trend continues” (emphasis added).
The New York Times trumpeted, “2017 Was One of the Hottest Years on Record,” adding, “Scientists at NASA on Thursday ranked last year as the second-warmest year since reliable record-keeping began in 1880, trailing only 2016. The National Oceanic and Atmospheric Administration, which uses a different analytical method, ranked it third, behind 2016 and 2015.”
The UK Guardian likewise proclaimed, “2017 was the hottest year on record without an El Niño, thanks to global warming.”
Similar headlines appeared around the world. (…)
by P Homewood, January 29, 2018 in NotaLotofPeopleKnowThat
Using satellite data, a group of scientists has studied the development of temperature over the past 15 years in a large part of Greenland.
More precisely, they looked at surface temperatures (the temperature close to the Earth’s surface) in a part of the country that is not covered by ice—around one fifth of the surface area of Greenland.
Intuitively, you may think that temperature throughout all of Greenland has been increasing, but that is not the case. When you look at the yearly average, the ice-free parts of Greenland show a slight drop in temperature between 2001 and 2015. With swings in temperature from year to year.
However, these results should not be interpreted as “proof” that the Earth is not warming, say the scientists behind the research, which is published in the journal Scientific Reports.
by Donna Laframboise, January 26, 2018 in BigPictureNews
BIG PICTURE: In 1995, a 40-year-old climate modeller named Ben Santer was in charge of Chapter 8 of the UN’s upcoming Intergovernmental Panel on Climate Change (IPCC) report. Nothing in the other 49 chapters mattered more than the question his team was expected to answer: Was global climate change wholly natural – or was it partially caused by human activity?
by Paul Homewood, January 25, 2018 in NotaLotofPeopleKnowThat
So I thought I would do some digging into the actual temperature data, to see if NOAA’s version stacks up. I promise that you will be astounded at the results! (…)
by Dr Benny Peiser, January 24, 2018 in ClimateChangeDispatch
The solar variability is not negligible in comparison with the energy imbalance that drives global temperature change.
Therefore, because of the combination of the strong 2016 El Niño and the phase of the solar cycle, it is plausible, if not likely, that the next 10 years of global temperature change will leave an impression of a ‘global warming hiatus.’ —James Hansen et al, 18 January 2018
The Global Warming Policy Foundation (GWPF) has lodged a new complaint with the BBC about its misleading reporting on global warming.
See also here
by P Gosselin, January 19, 2018 in NoTricksZone
In Germany there is one weather station that has be intact and unchanged for some 138 years.
It has never been moved and never been corrupted by the urban heat island (UHI) effect. Moreover it has consistently used the same instrumentation and computation method over the entire period, thus making it rare indeed. Few station can boast having those instrumentation qualities.
That measurement station is one operated at the Klostergarten of the St. Stephan Abbey in Augsburg just northwest of Munich.
by Anthony Watts, January 19, 2018, from NASA in WUWT
From NASA Goddard:
Earth’s global surface temperatures in 2017 ranked as the second warmest since 1880, according to an analysis by NASA (…)
See also here