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RealClimate: Recent global warming trends: significant or paused or what?

RealClimate: Recent global warming trends: significant or paused or what?
Guest commentary from Drew Shindell There has been a lot of discussion of my recent paper in Nature Climate Change (Shindell, 2014). That study addressed a puzzle, namely that recent studies using the observed changes in Earth’s surface temperature suggested climate sensitivity is likely towards the lower end of the estimated range. However, studies evaluating model performance on key observed processes and paleoclimate evidence suggest that the higher end of sensitivity is more likely, partially conflicting with the studies based on the recent transient observed warming. The new study shows that climate sensitivity to historical changes in the abundance of aerosol particles in the atmosphere is larger than the sensitivity to CO2, primarily because the aerosols are largely located near industrialized areas in the Northern Hemisphere middle and high latitudes where they trigger more rapid land responses and strong snow & ice feedbacks.

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Evidence The Earth's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 7,000 years ago marking the beginning of the modern climate era — and of human civilization. Most of these climate changes are attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives. Traffic Records NHTSA works to ensure that complete, accurate, and timely traffic safety data are collected, analyzed, and made available for decision-making at the national, state, and local levels. Analyzing reliable and accurate traffic records data is central to identifying traffic safety problems and designing effective countermeasures to reduce injuries and deaths caused by crashes. NHTSA promotes a comprehensive, systematic approach to assessing the performance of traffic records systems, and works with a several partners in the public and private sector, including national non-profit organizations, to achieve this vision and mission.

EURASC - Symposium Thank you to Mr. Sebastien Hervé (Université de Bretagne Occidentale, Brest, France) for the pictures. 2015 is a special year with the upcoming Climate Conference (Conference of Parties, COP21) in Paris in December. Bhutan To Be First Country to Go 100% Organic If there was ever a nation that could see the purpose behind organic, sustainable farming, it would be a nation that is composed mostly of farmers. Such a place does exist, and it soon may be the first nation to go 100% organic, paving the way for others to do the same on a global scale. The Himalayan kingdom of Bhutan is known for a high level of citizen happiness, but it is doing something even more noteworthy in the near future.

Two degrees: Will we avoid dangerous climate change? 09 Dec 2014, 11:30Simon Evans Limiting warming to no more than two degrees has become the internationally accepted target for climate policy, as we saw in the first blog of our series of pieces looking at the two degrees limit. Scientists think the risks of climate change increase as temperatures rise. Two degrees isn't a 'safe' level of climate change, but nor is it a red line with only chaos beyond, as we'll see in part three. It is a readily understood and useful marker of how we're doing at limiting dangerous climate change that has helped focus minds on the scale of the challenge. It's also what the world's governments have committed to achieving.

10 Books You Should Read Before College We asked some of our favorite entrepreneurs, creators, and thinkers to share the books that influenced their own educations. Want to shape your own learning experience in and out of the classroom? Here are the books you should read before going to college.

takepart A city that loves politics nearly as much as it loves food, Paris is a place where a bistro dinner might feature both debate and an excellent steak frites. At the end of this year, however, what’s on the plate at one Parisian dinner will be central to the politicking and negotiation going on at the United Nation’s climate change summit. Some 25,000 delegates are meeting in Paris to hammer out the final details on a climate change treaty, and as Civil Eats reports, former White House chef Sam Kass is hoping to show them how food is tied up with greenhouse gas emissions—and how it can help reduce them. Kass will serve a sequel to the lunch he and chef Dan Barber prepared at the U.N.

Holistic management Holistic management (from ὅλος holos , a Greek word meaning all , whole , entire , total + From Old French manege “the handling or training of a horse, horsemanship, riding, maneuvers, proceedings”, probably from Old Italian maneggiare “to handle, manage, touch, treat”, from mano, from Latin manus “the hand”) describes a systems thinking approach to managing resources. Holistic management was originally developed by Allan Savory for grazing management , [ 1 ] but is now being adapted for use in managing other systems with complex social, ecological and economic factors. In 2010 the Africa Centre for Holistic Management in Zimbabwe, Operation Hope (a " proof of concept " project using holistic management) was named the winner of the 2010 Buckminster Fuller Challenge as a comprehensive, anticipatory, design approach to radically advance human well being and the health of our planet's ecosystems. [ 2 ] [ 3 ] [ 4 ]

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