Research

PhD Thesis: Energy, EROI, and Economic Growth in a Long-Term Perspective. Download: Complete PhD thesis. Extended summary / Résumé long. Publications Energy expenditures, economic growth, and the m…

Source: Research

Advertisements

An Updated Version of the “Peak Oil” Story

Our Finite World

The Peak Oil story got some things right. Back in 1998, Colin Campbell and Jean Laherrère wrote an article published in Scientific American called, “The End of Cheap Oil.” In it they said:

Our analysis of the discovery and production of oil fields around the world suggests that within the next decade, the supply of conventional oil will be unable to keep up with demand.

There is no single definition for conventional oil. According to one view, conventional oil is oil that can be extracted by conventional methods. Another holds it to be oil that can be extracted inexpensively. Other authors list specific types of oil that require specialized techniques, such as very heavy oil and oil from shale formations, that are considered unconventional.

Figure 1 shows the growth in unconventional oil supply for three parts of the world:

  1. Oil from shale formations in the US.
  2. Oil from the…

View original post 3,985 more words

Gigantic Gravity Waves to Mix Summer With Winter? Wrecked Jet Stream Now Runs From Pole-to-Pole

Mmm

robertscribbler

It’s as if global warming were ringing the Earth’s atmosphere like some great, cacophonous alarm bell. The upper level zonal winds are swinging wildly from record high positive anomalies to record low negative anomalies. Gravity waves — the kinds of big atmospheric waves that tend to move air from the Tropics all the way to the Poles and are powerful enough to cause the Caribbean Sea to ‘whistle’ in the satellite monitors — are growing larger. And the Jet Stream now has redefined all boundaries — flowing at times from the East Siberian Sea in the Arctic across the Equator and all the way south to West Antarctica.

Jet Stream Runs from Pole to Pole

(Northern Hemisphere Jet Stream crosses the Equator in this Earth Nullschool screen capture to merge with the Southern Hemisphere Jet Stream. It’s the very picture of weather weirding due to climate change. Something that would absolutely not happen in a normal…

View original post 642 more words

Monster African Thunderstorm Hurls Enormous Haboob at Europe, 100 + Degree (F) Heat to Follow

robertscribbler

An expansion of the Sahara Desert northward into Europe. A scenario that has long been a concern raised by scientists modeling potential extreme weather and climate scenarios related to human-caused climate change. And this week, it appears that Southern and Eastern Europe are going to get a taste of Sahara Desert-type weather conditions. It’s just unfolding a bit more dramatically than scientists at first anticipated.

Haboob the Size of England Ireland and Scotland Combined

(Monster thunderstorm explodes over Northwestern Africa last night, hurling a huge dust storm or Haboob northward toward Europe. Image source: The Met Office.)

Last night, a massive thunderstorm large enough to cover the England, Scotland and Ireland combined blew up over western Africa. The storm, larger than most hurricanes, drew in strong, hot winds from North Africa and the Sahara Desert. These winds bore upon them a great load of dust. Dust which the strong outflow of the storm then turned northward along a…

View original post 582 more words

Pale Blue Tesla: Most Beautiful Fan-Made Car Ad Ever

Climate Denial Crock of the Week

What does it mean when a car inspires spontaneously created fan-made vids like this?

Gas2:

A fan created Tesla commercial uploaded by Loren Booker is simply awesome. It features the voice of Carl Sagan narrating his 1980 television show Cosmos: A Personal Voyage. Cosmos was a thirteen part PBS series that covered a variety of scientific topics. It attempted to demystify them and make the knowledge that was unique to the scientific community at the time understandable to the general population. To this day, Cosmos is one of the most frequently watched programs ever aired on PBS.

supportdarksnow

View original post 131 more words

Association Adrastia : “Nous sommes à la veille d’un basculement écologique planétaire inédit”

Le Comptoir

L’association Adrastia travaille sur le franchissement du “climax” de l’humanité. Face à cet inévitable déclin, Adrastia se propose d’apporter information et réflexion, tant d’un point de vue scientifique que social, sur les grands enjeux écologiques et économiques pour “anticiper au mieux la dégradation systémique de nos cadres de vie”. Nous nous sommes entretenus avec son président, Vincent Mignerot sur le mirage de l’éternelle croissance et l’effondrement à venir.

Le Comptoir : Au début de votre manifeste, vous dites : “Le “peak” de disponibilité de l’ensemble des ressources nécessaires à notre existence a été franchi”. Pouvez-vous rapidement présenter les arguments sous-tendant cette observation ?

Vincent-Mignerot-portrait-Dannreuther-9.2Vincent Mignerot : Si l’humanité a évolué jusqu’au XVIIIe siècle en satisfaisant ses besoins par l’exploitation quasi exclusive de matières premières et de ressources énergétiques – animale, végétale, minérale, hydraulique et éolienne – disponibles à la surface de la Terre, le développement de…

View original post 4,541 more words

Snowball in Hell: Greenland Ice Sheet Record Thaw

Climate Denial Crock of the Week

greenlandspikeDiscover:

On April 11, a dramatic early spike in melting of snow and ice at the surface of Greenland’s ice sheet prompted a Danish climate scientist to say that she and her colleagues were “incredulous.”

Now, there has been a second bout of unusual melting.

You can see both of them in the graph above from the National Snow and Ice Data Center, or NSIDC. It charts the percentage of the Greenland Ice Sheet experiencing surface melting. In both cases, the thaw exceeded 10 percent of the ice sheet’s area.

One more reason to support Dark Snow this year:

supportdarksnowNow is the time to support the 2016 Dark Snow Field campaign. More about that here.

When I noticed the second spike, I reached out by email to Ted Scambos, lead scientist for the NSIDC science team, to get his reaction to what has been happening in the Arctic lately. Here was his reply:

The Arctic…

View original post 309 more words