Archives de catégorie : better to know…?

Quantifying the causes of the recent decrease in US CO2 emissions

by Roger Andrews, August 23, 2017 in Energy Matters (blog)


Between 2007 and 2015 total annual US CO2 emissions decreased by 740 million tons (12%). An updated analysis shows that 35% of this decrease was caused by natural gas replacing coal in electricity generation, 30% by lower fuel consumption in the transportation sector, 28% by renewables replacing

NASA’s Secret Plan to Save Earth From Super-Volcanoes… Seriously?

by David Middleton, August 18, 2017 in WUWT


If “the supervolcano threat is substantially greater than the asteroid or comet threat,” does this mean we can stop fretting about Gorebal Warming and the Sixth Mass Extinction?  Is NASA really moving on to actual threats to the planet?  Well, not threats to the planet… The planet has handled supervolcanoes, asteroids and comets quite well over its 4.5 billion year lifespan.

Geologists warn us about dangerous volcanoes. Will we spend pennies for warnings?

by Larry Kummer, August 15, 2017


While we obsess about climate change and debate if we live in the Anthropocene, we prepare poorly or not at all for natural forces like volcanoes that can level cities. This is folly we can no longer afford. Experts recommend a simple first step to better protect ourselves. Let’s start listening, or nature will teach us an expensive lesson.

California is the State most at risk due to its volcanoes near major cities, as shown in this map from the website of the California Volcano Observatory

On Carbon Dioxide Toxicity

by Blair King, April 10, 2016


Specifically the Bureau of Land Management Health Risk Evaluation for Cabon Dioxyde  points out:

A value of 40,000 ppm is considered immediately dangerous to life and health based on the fact that a 30-minute exposure to 50,000 ppm produces intoxication, and concentrations greater than that (7-10%) produce unconsciousness (NIOSH 1996; Tox. Review 2005). Additionally, acute toxicity data show the lethal concentration low (LCLo) for CO2 is 90,000 ppm (9%) over 5 minutes (NIOSH 1996).

See also The Lake Nyos Disaster

See also here

US Climate Report Edits Out Highly Embarrassing Section

by Paul Homewood, August 10, 2017, in WUWT


I mentioned in my previous post that the latest draft climate report, published in June, had seemingly left out a rather embarrassing table from the Executive Summary, one that had previously been written into the Third Draft, published last December.

As the link to the Third Draft had disappeared from the NYT, I could not show it.

However, Michael Bastasch, writing over at WUWT, did have the link, so we can now compare the relevant sections.

See also here

Global Warming Caused Vikings to Become Terrorists

by David Middleton, August 7, 2017 in WUWT 


So… If climate change caused the Vikings to turn their plowshares into swords, abandoning their farms to become terrorists… the climate change would have been of the warming variety.  I’m not a farmer, but it seems to me that global warming would have actually enhanced the Vikings’ ability to farm up around the Arctic Circle.

nother BOM scandal: Australian climate data is being destroyed as routine practice

by JoNova, August 7, 2017 in ClimateChangeDispatch


In the mid-1990s thermometers changed right across Australia — new electronic sensors were installed nearly everywhere. Known as automatic weather sensors (AWS) these are quite different to the old “liquid in glass” type.

The electronic ones can pick up very short bursts of heat—so they can measure extremes of temperatures that the old mercury or liquid thermometers would not pick up unless the spike of heat lasted for a few minutes.

It is difficult (impossible) to believe that across the whole temperature range that these two different instruments would always behave in the exact same way.

…Next Generation of Fossil Fuels…

by Donn Dears, August 2017


As noted in my article four years ago, Japan has a program for producing natural gas from methane hydrates located near its coast, and predicts it will be successful by 2019.

Most people believe that Japan’s objective is highly optimistic, but it does shed light on the efforts currently underway to develop the technology for extracting natural gas from methane hydrates.

No Direct Human Health Risk Under a CO2 Exposure of 3000 ppm

by W. Liu et al., August 1st 2017


And what did these analyses reveal?

Not surprisingly, when all was said and done, the authors report that “increasing [the] CO2 concentration to 3000 ppm at 35°C did not cause changes in any of the measured responses.” They did note, however, that the heart rates of the subjects were slightly reduced under elevated CO2 conditions (Figure 1, top left panel), although these reductions were not statistically significant.

100 companies to blame for 71% of carbon “pollution”, but world’s worst corporates are Big Government

by JoNova, August 2017


Since 1988, a mere 100 companies have been responsible for 71 percent of the entire world’s industrial greenhouse gas emissions.

This data comes from an inaugural report published by the Carbon Disclosure Project (CDP), an environmental non-profit. Charting the rapid expansion of the fossil fuel industry in the last 28 years, they have now released some truly staggering numbers on the world’s major carbon polluters.

Plastics Yet Again

by Kip Hansen, July 28, 2017 in WUWT


The New York Times’ article breathlessly reports:

“From the 1950s to today, 8.3 billion metric tons of plastic have been produced, with around half of it made since 2004. And since plastic does not naturally degrade, the billions of tons sitting in landfills, floating in the oceans or piling up on city streets will provide a marker if later civilizations ever want to classify our era. Perhaps they will call this time on Earth the Plastocene Epoch.”

Hidden consequences of intermittent electricity production

by Jozef Ongena et al., 2017 in Arguments


The hidden consequences of a massive use of intermittent renewable energy systems for electricity production are highlighted, using existing electricity production data from Germany from the last 5 years, where presently a system is in operation with an installed capacity of about 50 GW in wind turbines (sum of onshore and offshore wind) and 40GW in photovoltaic panels.This fleet of intermittent renewable systems produces more than half of the yearly renewable electrical energy of Germany, the rest being produced by hydro, so-called ‘biomass’ and a very small fraction of geothermal sources

THE COP21 AGREEMENT – JUST THE FACTS, PLEASE

by Robert Lyman, June9, 2017 in FriendsOfScienceCalgary


French version here

Each country is committed “to prepare and maintain successive individual nationally determined contributions (INDCs) that it intends to achieve”, to update these plans every five years and to pursue and report on the related domestic emission reduction measures. After three years, a Party may withdraw from the Agreement with one year’s notice.

There is an unresolved debate as to whether to call COP21 an agreement or a treaty.

 

Abrupt summer sea ice decline has not affected polar bear numbers as predicted

by  Dr. Susan J. Crockford, July 14, 2017 in ClimateChangeDispatch


Yes, Arctic sea ice has declined since satellite records began in 1979 but polar bears have adjusted well to this change, especially to the abrupt decline to low summer sea ice levels that have been the norm since 2007. Some polar bear subpopulations have indeed spent more time on land in summer than in previous decades but this had little negative impact on health or survival and while polar bear attacks on humans appear to have increased in recent years (Wilder et al. 2017), the reasons for this are not clear: reduced summer sea ice is almost certainly not the causal factor (see previous post here).

New York Times: World’s nations building huge numbers of new coal plants despite emissions growth

by  NY Times, July 13, 2017 in WUWT


The level of renewable use is now so high in Germany that serious electric grid reliability and stability issues now exist which require both fossil power plant emergency backup for failed renewable production and dictate rejecting renewable energy to ensure operation of fossil plants required for electric grid reliability and stability.

On climate change, the uncertainties multiply— literally.

by Michael Bernstam, July 3, 2017 in GWPF


The following four stipulations must each be highly probable: 

1. Global warming will accumulate at 0.12 degrees Celsius or higher per decade.

2. It is anthropogenic, due largely to carbon dioxide emissions.

3. The net effect is harmful to human well-being in the long run.

4. Preventive measures are efficient, that is, feasible at the costs not exceeding the benefits.

But even if the probability of each of these stipulations is as high as 85 percent, their compound probability is as low as 50 percent. This makes a decision to act or not to act on climate change equivalent to flipping a coin.

Despite Paris accord, G-20 countries invest four times as much in fossil fuels as green energy

by Ben Wolfgang, July 5, 2017,  in The Washington Times


The biggest critics of President Trump’s decision to withdraw from the Paris climate accord are also the world’s biggest hypocrites on energy policy, top environmental groups charged Wednesday in a report that found many top nations’ rhetoric on cutting emissions doesn’t line up with how and where they spend their money.

The key finding: The G-20 nations spend roughly four times as much in public financing for fossil fuels as they do supporting renewable energy sources such as wind and solar. The report examines loans, grants, guarantees, insurance and other types of public finance offered either by the governments, government-owned financial institutions and credit agencies, and multilateral groups made up of G-20 countries.

‘Perfect storm’ led to 2016 Great Barrier Reef bleaching

by James Cook University and Université Catholique de Louvain, July 3, 2017, in ScienceDaily


Professor Wolanski said the study was subjective to the extent that there was a lack of oceanographic field data in the Great Barrier Reef itself for the 2016 el Nino event. By contrast, the amount of oceanographic field data in the Torres Strait and the northern Coral Sea was very good.

“What we presented is our best-informed attempt to reveal the mechanisms involved in causing the event, based on the available oceanographic data combined with the existing body of knowledge on the water circulation in and around the Torres Strait/Northern Great Barrier Reef region.”