Though advocates of the dangerous anthropogenic global warming (AGW) narrative may not welcome the news, evidence that modern day global warming has largely been driven by natural factors – especially solar activity – continues to pile up.
Much of the debate about the Sun’s role in climate change is centered around reconstructions of solar activity that span the last 400 years, which now include satellite data from the late 1970s to present.
Study Bolsters Theory of Heat Source Under West Antarctica
A new NASA study adds evidence that a geothermal heat source called a mantle plume lies deep below Antarctica’s Marie Byrd Land, explaining some of the melting that creates lakes and rivers under the ice sheet. Although the heat source isn’t a new or increasing threat to the West Antarctic ice sheet, it may help explain why the ice sheet collapsed rapidly in an earlier era of rapid climate change, and why it is so unstable today.
by Ron Clutz, November 8, 2017, in ClimateChangeDispatch
The graph [after the jump] is noisy, but the density is needed to see the seasonal patterns in the oceanic fluctuations. Previous posts focused on the rise and fall of the last El Nino starting in 2015.
This post takes a longer view, encompassing the significant 1998 El Nino and since. The color schemes are retained for Global, Tropics, NH and SH anomalies.
Despite the long time frame, I have kept the monthly data (rather than yearly averages) because of interesting shifts between January and July.
President, Europäisches Institut für Klima und Energie (EIKE)
US Climate and Energy Policy after 10 Months Trump
Zero Hour for Climate Alarmists?
Marc Morano
Editor in Chief www.climatedepot.com and Director of Communication CFACT
The German Energiewende – Germany’s Green Path, between Illusion and Reality,
by Deming Kong et al., November 30, 2017 in Quaternary International
High-resolution surface temperature records over the last two millennia are crucial to understanding the forcing and response mechanism of Earth’s climate. Here we report a bidecadal-resolution sea surface temperature (SST) record based on long-chain alkenones in a gravity sediment core retrieved from the northern South China Sea. SST values varied between 26.7 and 27.5 °C, with a total variability ∼1 °C over the last 2000 years.
It started as a nice simple idea: There is a finite amount of Carbon that humanity can burn before the planet warms above 2C. This idea was based on AR5 Earth Systems Models (ESMs) ‘showing’ that the relationship between global temperatures and cumulative emissions was linear. At last the IPCC had something easy for world leaders to understand! This was all nicely summarised in Figure SPM-10, shown below. The Paris accord is essentially derived from this one figure.
Radical environmentalists continue to claim that CO2 emissions cause climate change and that global warming, aka, climate change, will bring more severe storms.
Every year, the facts prove them wrong: Storms are not getting more severe or more frequent.
Climate change is back on the agenda with a global climate conference kicking off Monday in the German city of Bonn.
Who’s coming, what are the key debates about and how green will this meeting be? Five things to know about the U.N. conference known as COP23, which runs from Nov. 6-17.
by Paul Homewood, November 5, 2017, NotLotPeopleKnowThat
The Federal Climate Science Special Report from the US Global Change Research Program, mandated under the U.S. Global Change Research Act of 1990, has now been published.
As with the draft, which I reported on in August, it is the usual mix of half truths, exaggerations, omissions and outright lies
At Dr. Roy Spencer’s site, regular commenter Des posted a very interesting analysis with respect to September 2017 on UAH6 and the Top 10 first-9-months-of-the-year. Des has graciously allowed me to use their work. Everything that appears below is from Des until you see the statement “Written by Des.” below:
Top 10 Septembers on the record:
1. 2017 (+0.54)
2. 2016 (+0.45) … EL NINO
3. 1998 (+0.44) … EL NINO
4. 2010 (+0.37) … EL NINO
5. 2009 (+0.27) … EL NINO
6. 2005 (+0.25) … EL NINO
7. 2015 (+0.25) … EL NINO
8. 1995 (+0.22) … EL NINO
9. 2012 (+0.22)
10. 2013 (+0.22)
‘Scars’ left by icebergs record West Antarctic ice retreat ten thousand years ago – occurred under climate conditions that were relatively similar to those of today.
The Version 6.0 global average lower tropospheric temperature (LT) anomaly for October, 2017 was +0.63 deg. C, up from the September, 2017 value of +0.54 deg. C (click for full size version).
18O is a rare isotope of oxygen. The ratio of 18O to the normal 16O in foraminifera fossils (“forams”) can be used to estimate paleo-ocean temperatures. Higher values mean lower temperatures. A recent article on geologypage.com (here) led me to Bernard, et al., 2017, which has experimental data that suggest 18O concentrations can be altered in fossils by solid-state diffusion after fossilization. This can corrupt the measurement and the resulting calculated temperature
When it comes to climate change, there are worlds apart between Germany’s aspiring Jamaica Coalition partners. It is all about coal and it is not certain the divide can be bridged.
Under the U.S. Global Change Research Act of 1990, the federal government has been charged with producing large National Climate Assessments (NCA), and today the most recent iteration has arrived. It is typical of these sorts of documents–much about how the future of mankind is doomed to suffer through increasingly erratic weather and other tribulations. It’s also missing a few tidbits of information that convincingly argue that everything in it with regard to upcoming 21st century climate needs to be taken with a mountain of salt.
by Paul Homewood, November 2, 2017 in NotLotPeopleKnowThat
European mean sea-level records are among the best time series data available globally by which to detect the presence of necessary accelerations forecast by physics-based projection models to elevate current rates of global sea-level rise (≈3 mm/y) to anywhere in the vicinity of 10–20 mm/y by 2100. The analysis in this paper is based on a recently developed analytical package titled “msltrend,” specifically designed to enhance estimates of trend, real-time velocity, and acceleration in the relative mean sea-level signal derived from long annual average ocean water level time series
Biases in climate model simulations introduce biases in subsequent impact simulations. Therefore, bias correction methods are operationally used to post-process regional climate projections. However, many problems have been identified, and some researchers question the very basis of the approach.
by Phil J. Watson, October 21, 2016 in J. of Coastal Research
(…)Key findings are that at the 95% confidence level, no consistent or compelling evidence (yet) exists that recent rates of rise are higher or abnormal in the context of the historical records available across Europe, nor is there any evidence that geocentric rates of rise are above the global average. It is likely a further 20 years of data will distinguish whether recent increases are evidence of the onset of climate change–induced acceleration.
by Tony Heller, November 1, 2017 in The Deplorable Clim Science Blog
In January 1972, the National Science Foundation held a meeting at Brown University to discuss “climatic change” – then meant global cooling, which they said was of natural origin.
By Dr. Sebastian Lüning and Prof. Fritz Vahrenholt
(German text translated/edited by P. Gosselin)
This month two major North Sea storms have hit Europe rather severely, and not surprisingly the usual climate ambulance chasers were out in force to try to pin the blame on man’s activity, and in doing so ignored the climate history that provides us with the proper perspective. We look at some analyses of past German storm activity.
Les scientifiques en déduisent que le réchauffement global actuel pourrait potentiellement être “sans précédent” sur les 100 derniers millions d’années. L’étude de ces géochimistes, publiée dans Nature Communications, constitue une sorte de pavé dans la mare des paléoclimatologues qui utilisent depuis les années 1950 ce “paléothermomètre” aidant à bâtir les modèles actuels sur le réchauffement climatique
Predicting the impact of sea-level (SL) rise on coral reefs requires reliable models of reef accretion. Most assume that accretion results from vertical growth of coralgal framework, but recent studies show that reefs exposed to hurricanes consist of layers of coral gravel rather than in-place corals. New models are therefore needed to account for hurricane impact on reef accretion over geological timescales
La géologie, une science plus que passionnante … et diverse