by Tony Heller, May 10, 2017
Global warming alarmists and climate scientists have predicted that the Arctic Ocean will be ice-free by 1979, or 2000, or 2008, or 2012, or 2013, or 2015, or 2020, or 2030, or 2050 or …
Archives de catégorie : climate-debate
Video: analysis of NASA data shows modern temperature trends are not unusual
by Michael Thomas c/o Anthony Watts, May 10, 2017
An important aspect of the climate change debate can be summed up like this: “One position holds that medieval warm temperatures reached levels similar to the late twentieth century and maintained that the LIA was very cold, while another position holds that past variability was less than present extremes and that the temperature rise of recent decades is unmatched”. This video challenges whether the rise of recent decades is unmatched.
full series :Thoughts on the Public Discourse over Climate Change
by MIT prof. Richard Lindzen, April 25, 2017
MIT atmospheric science professor Richard Lindzen suggests that many claims regarding climate change are exaggerated and unnecessarily alarmist.
Recent pause in the growth rate of atmospheric CO2 due to enhanced terrestrial carbon uptake
by Keenan et al., November 8, 2016, Nature
Terrestrial ecosystems play a significant role in the global carbon cycle and offset a large fraction of anthropogenic CO2 emissions. The terrestrial carbon sink is increasing, yet the mechanisms responsible for its enhancement, and implications for the growth rate of atmospheric CO2, remain unclear.
web- Comments
Jim McIntosh , David Mulberry and 2 others posted in Air-Climate-Energy (Jim McIntosh 9 May at 11:18): Reposting because those AGW alarmists hate this report. Yes, plants are doing it better than any carbon tax and they do it for free… as long as we don’t cut them down. You’d think we’d learn by now that managing climate comes back to how we have mismanaged the planet’s forests.
The Impacts of Urban Heat Islands on Natural Warming Trends
by Quereda et al., 2016
“on comparing the temperature of urban areas and rural areas, various researchers have concluded that the urban effect could account for between 40% and 80% of the observed thermal trend in the last few decades,”
There Has Been No ‘Global’ Warming In The Southern Hemisphere, Equatorial Regions
by Kenneth Richard, May 4, 2017
According to overseers of the long-term instrumental temperature data, the Southern Hemisphere record is “mostly made up”. This is due to an extremely limited number of available measurements both historically and even presently from the south pole to the equatorial regions.
Below is an actual e-mail conversation between the Climate Research Unit’s Phil Jones and climate scientist Tom Wigley. Phil Jones is the one who is largely responsible for making up the 1850-present temperature data for the Met Office in the UK (HadCRUT).
Taking The Economist to Task for Unfounded Climate Catastrophe Fearmongering
by Dr. John D. Harper, FGSA,FGAC, PGeol., former director of the Geological Survey of Canada © May 2017
I have recently been asked to comment on three articles published in The Economist. My background for such a response is as a Professor of Petroleum Geology and Sedimentology (ret.), a former Director-Energy for the Geological Survey of Canada, a former researcher in industry, and as an academic researcher on sea level changes and climate documentation through geologic time, Natural Resources of the Future and a couple of decades of studies in the Arctic.
1) Skating on thin ice: The thawing Arctic threatens an environmental catastrophe. Apr 27, 2017
2) The Arctic as it is known today is almost certainly gone. April 29, 2017
3) Thaw point: As the Arctic melts the world’s weather suffers. April 29, 2017
Current Surface Mass Budget of the Greenland Ice Sheet
by DMI (Danish Meteorological Institute), May, 2017
Here you can follow the daily surface mass balance on the Greenland Ice Sheet. The snow and ice model from one of DMI’s climate models is driven every six hours with snowfall, sunlight and other parameters from a research weather model for Greenland, Hirlam-Newsnow.
See also, Study: Antarctica’s ice sheet survived warmer times, remains stable today
See also, Antarctic study shows central ice sheet is stable since milder times
EU trend of CO2 reduction seems to have stopped
by Peter Teffer, May 4, 2017 in euobserver
The EU’s statistical agency Eurostat announced Thursday (4 May) that CO2 emissions resulting from the EU’s energy use have “slightly decreased” in 2016, compared to the year before.
But Eurostat’s press release did not mention that the small decrease has not made up for the small increase in CO2 emissions the year before, and that more CO2 was emitted in 2016 than in 2014.
A propos de l’article « Réchauffement climatique » paru dans « Science … & pseudo-sciences »
by Jean-Claude Pont, c/o Uskek, 3 mai 2017
Jean-Claude Pont écrit au rédacteur en chef de « Science … & pseudo-sciences », à propos de l’article « réchauffement climatique » paru dans le numéro 317 de la revue. Il entend rectifier ce qu’il tient pour « des manquements importants, parfois des ambiguïtés, voulues ou inconscientes ».
NEW STUDY CONFIRMS: THE WARMING ‘PAUSE’ IS REAL AND REVEALING
by Dr David Whitehouse, GWPF Science Editor, May 4, 2017
A new paper has been published in the Analysis section of Nature called Reconciling controversies about the ‘global warming hiatus.’ It confirms that the ‘hiatus’ or ‘pause’ is real. It is also rather revealing.
It attempts to explain the ‘Pause’ by looking into what is known about climate variability. They say that four years after the release of the IPCC AR5 report, which contained much about the ‘hiatus’ it is time to see what can be learned.
One could be a little sarcastic in saying why would Nature devote seven of its desirable pages to an event that some vehemently say never existed and maintain its existence has been disproved long ago. Now, however, as the El Nino spike of the past few years levels off, analysing the ‘pause’ seems to be coming back into fashion.
A new picture of the last ice age
by Bergen University, March 17, 2016
in ScienceDaily
At the peak of the last ice age, a vast ice sheet covered northern Europe, spanning from the British Isles, across Scandinavia and into Russia in the east and the Barents Sea in the north. A new reconstruction of this ice sheet shows the interaction between climate and glaciers — how the ice sheet grows and retreats
Antarctic Peninsula ice more stable than thought
by University of Leeds, May 2, 2017
in ScienceDaily
An international team of researchers, led by the UK Centre for Polar Observation and Modelling at the University of Leeds, are the first to map the change in ice speed. The team collated measurements recorded by five different satellites to track changes in the speed of more than 30 glaciers since 1992.
Glacier flow at the southern Antarctic Peninsula has increased since the 1990s, but a new study has found the change to be only a third of what was recently reported.
Thoughts on the Public Discourse over Climate Change
by MIT Prof. Richard Lindzen, April 25, 2017
Richard Lindzen is the Alfred P. Sloan Professor of Atmospheric Sciences, Emeritus at Massachusetts Institute of Technology.
For over 30 years, I have been giving talks on the science of climate change. When, however, I speak to a non-expert audience, and attempt to explain such matters as climate sensitivity, the relation of global mean temperature anomaly to extreme weather, that warming has decreased profoundly for the past 18 years, etc., it is obvious that the audience’s eyes are glazing over.
Global temperatures plunge in April – “the pause” returns
by Anthony Watts, May 1, 2017
Global temperatures have dropped 0.5° Celsius in April according to Dr. Ryan Maue. In the Northern Hemisphere they plunged a massive 1°C . As the record 2015/16 El Nino levels off, the global warming hiatus aka “the pause” is back with a vengeance.
2017 Accumulated Cyclone Energy
by Dr. Ryan N. Maue, May 01, 1017
Tropical cyclone accumulated cyclone energy (ACE) has exhibited strikingly large global interannual variability during the past 40-years. In the pentad since 2006, Northern Hemisphere and global tropical cyclone ACE has decreased dramatically to the lowest levels since the late 1970s. Additionally, the frequency of tropical cyclones has reached a historical low. Here evidence is presented demonstrating that considerable variability in tropical cyclone ACE is associated with the evolution of the character of observed large-scale climate mechanisms including the El Nino Southern Oscillation and Pacific Decadal Oscillation. In contrast to record quiet North Pacific tropical cyclone activity in 2010, the North Atlantic basin remained very active by contributing almost one-third of the overall calendar year global ACE.
Already 58 New 2017 Papers Link Solar Activity To Climate Changes
by Kenneth Richard, April 27, 2017
Just in the last few weeks alone, another 20 scientific papers were identified which link solar variations to climate changes, which means 58 papers have already been published in 2017.
Impact of the ~ 2400 yr solar cycle on climate and human societies
by Javier, September 20, 2016
The role of solar variability on climate change, despite having a very long scientific tradition, is currently downplayed as a climatic factor within the most popular hypothesis for climate change.
As the root of this neglect lie two fundamental problems. Solar variability is quite small (about 0.1% of total irradiation), and there is no generally accepted mechanism by which the solar variability signal could be amplified by the climate system
New Paper Asserts ‘Biased’ Climate Models Underestimate Natural Variability And The Warmth Of The Past
by Kenneth Richard, April 20, 2017
Reconstruction of Northern Hemisphere Temperatures indicate Medieval Period was as Warm as Recent Decades
with 5 papers (web links inside)
Y=mX+b, how does Constant CO2 Cause a Change in Temperature?
by co2is life blog, April 15, 2017
The theory goes that over time CO2 increases resulting in an increase in temperature, put another way, temperature is a function of CO2, or T=f(CO2). This model, however, is deeply flawed and demonstrates a disturbing ignorance of science, modeling, and the physics behind the greenhouse gas effect.
The Meaning and Utility of Averages as it Applies to Climate
by Clyde Spencer, April 23, 2017
By convention, climate is usually defined as the average of meteorological parameters over a period of 30 years. How can we use the available temperature data, intended for weather monitoring and forecasting, to characterize climate? The approach currently used is to calculate the arithmetic mean for an arbitrary base period, and subtract modern temperatures (either individual temperatures or averages) to determine what is called an anomaly. However, just what does it mean to collect all the temperature data and calculate the mean?
How inconstant are climate feedbacks – and does it matter?
by Nic Lewis, April 18, 2017
There is as yet no observational evidence that climate sensitivity increases with time in the real climate system – although this cannot be ruled out – nor is it fully understood why it increases in most AOGCMs. In any event, even if real-world climate sensitivity does increase with time, in the longer run other factors that are not reflected in ECS, such as melting ice sheets, are probably more important. Therefore, while time-varying climate sensitivity is of considerable interest from a theoretical point of view, for practical purposes its influence is likely to be very modest.
Alarming Arctic heat waves look a lot like the last alarming heat waves in 1940s
by JoNova, April 2017
The Arctic is the most sensitive place to man-made emissions on Earth, which is why it has barely warmed since 1944? Well, it makes sense if CO2 is largely irrelevant. Humans have made 90% of all their CO2 in the last 70 years and nothing much happened in the place where it was supposed to hurt the most.
Pause Or Not, Climate Models Continue To Grossly Overstate Global Temperature Trends
by P. Gosselin, April 8, 2017
Looking at data objectively, it is pretty clear that there is little relationship between weather/climate and the rising CO2 concentrations in the atmosphere, as the global warming pause between 1997-2016 shows –
House Science Committee Hearing
by Judith Curry, March 29, 2017, Professor, School of Earth and Atmospheric Sciences Georgia Institute of Technology Atlanta
Prior to 2010, I felt that supporting the IPCC consensus on human-caused climate change was the responsible thing to do. That all changed for me in November 2009, following the leaked Climategate emails, that illustrated the sausage making and even bullying that went into building the consensus.. (also, see .pdf)