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Tuesday, March 9th, 2010
One of the challenges of climate literacy is helping folks visualize fossil fuel emissions and their impacts.
Last year, Bowdoin College completed its emissions inventory and climate action plan. We discovered that the campus emits a total of 24,000 tons of CO2 equivalents each year. So how much is that really?
One student decided to help illustrate this by creating an art installation, cordoning off a 27-ft x 27-ft x 27-ft cube in the student center with red ribbon.
Now imagine 24,000 of these cubes emanating from a college campus each year. That helps show the magnitude of the challenge.
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Photo courtesy of Bowdoin College
Posted in behavior, campus sustainability, climate change science, communication and framing, energy, higher education | 1 Comment »
The hidden global CO2 emissions of consumerism
Monday, March 8th, 2010
It’s been easy for citizens of the developed, industrialized world to criticize China and India over their rapidly growing greenhouse gas emissions. This was one of the major reasons why the Kyoto Protocol was never ratified in the United States.
As many have pointed out, however, there are several flaws with this argument:
- The per-capita carbon emissions in China and India remain much lower (1/4 and 1/16, respectively) compared to the U.S..
- Perhaps more importantly, some of the carbon emission in these countries is caused by the production of export goods to fuel consumer demand in wealthy nations. Thus, we are responsible for “shadow carbon emissions” that get attributed to developing nations.
Until today, there haven’t been very good estimates of these kinds of shadow emissions.
In the Early Edition of the Proceedings of the National Academy of Sciences, Steven Davies and Ken Caldeira examine how much CO2 is embodied in the import and export of goods.1
Their results are interesting (excerpts below—If you can get a copy of the article, check out figures 1 and 2; they are terrific visuals for this information. Alas, copyrights don’t allow me to post them):
- Approximately 6.2 gigatonnes (Gt) of CO2, 23% of all CO2 emissions from fossil-fuel burning, were emitted during the production of goods that were ultimately consumed in a different country.
- Emissions imported to the United States exceed those of any other country or region, primarily embodied in machinery (91 Mt), electronics (77 Mt), motor vehicles and parts (75 Mt), chemical, rubber, and plastic products (52 Mt), unclassified manufactured products (52 Mt), wearing apparel (42 Mt), and intermediate goods (654 Mt).
- These imports are offset by considerable US exports of transport services (49 Mt CO2), machinery (42 Mt), electronics (26 Mt), chemical, rubber, and plastics products (25 Mt), motor vehicles (22 Mt), and intermediate goods (263 Mt).
- [G]oods imported to Western Europe and Japan embody much more CO2 per US$ than do their exports, reflecting the import of energy-intensive products from elsewhere.
- The carbon intensity of imports to China, Russia, India, and the Middle East is consistently far less than that of their exports.
- China is by far the largest net exporter of emissions, followed by Russia, the Middle East, South Africa, Ukraine, and India and, to a lesser extent, Southeast Asia, Eastern Europe, and areas of South America.
- The primary net importers of emissions are the United States, Japan, the United Kingdom, Germany, France, and Italy. Although the overall mass of emissions is much less, the other countries of Western Europe are all net importers, as are New Zealand, Mexico, Singapore, and many areas of Africa and South America. Similarly, Canada, Australia, Indonesia, the Czech Republic, and Egypt are among the countries whose net exports of emissions are small.
- On a per-capita basis, net imports of emissions to the United States, Japan, and countries in Western Europe are disproportionately large, with each individual consumer associated with 2.4–10.3 tons of CO2 emitted elsewhere.
Their conclusion:
Consumption-based accounting reveals that substantial CO2 emissions are traded internationally and therefore not included in traditional production-based national emissions inventories. The net effect of trade is the export of emissions from China and other emerging markets to consumers in the United States, Japan, and Western Europe. In the large economies of Western Europe, net imported emissions are 20–50% of consumption emissions; the net imported emissions fall to 17.8% and 10.8% in Japan and the United States, respectively. In contrast, net exports represent 22.5% of emissions produced in China. Thus, to the extent that constraints on emissions in developing countries are the major impediment to effective international climate policy, allocating responsibility for some portion of these emissions to final consumers elsewhere may represent an opportunity for compromise.
1Steven J. Davis and Ken Caldeira (2010). Consumption-based accounting of CO2 emissions PNAS : 10.1073/pnas.0906974107
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Photo Credit: http://www.flickr.com/photos/deks/ / CC BY-NC 2.0
Tags: China, India
Posted in behavior, climate change science, climate economics, energy, nature and culture, technology, transportation | No Comments »
This week’s good ideas in campus sustainability: 3/1/10
Thursday, March 4th, 2010
This week’s showcase features Beloit College, Central College, and Iowa State University. LEED Platinum is not easy to achieve, and it’s even more impressive with projects this large.
1. Beloit College’s Science Center gets LEED Platinum Nod
“The success of our new science center reflects the phenomenal collaboration of creative architects, talented engineers, professional construction firms and the finest faculty and staff who were, and are, committed to the best outcome for our students,” said Beloit College president Scott Bierman. “We are, of course, thrilled to have gotten LEED platinum status; but even more important is that we have a building that works terrifically well—as well as any I have ever seen—as an integrated set of learning spaces.”
2. Central receives platinum LEED rating for new building
“This special recognition from the USGBC brings great joy to the whole Central College community and reflects continuing success of our pursuit of a sustainable future as a long-term goal adopted by Central’s board of trustees,” said Central College President David Roe. “The achievement was made possible through the concerted efforts of the professionals on Central’s staff led by Mike Lubberden and a large team of amazing corporate partners including Weitz Corporation as our general contractor, RDG Planning and Design, MEP and Associates, and Pella Corporation.”
3. ISU’s King Pavilion first education building in Iowa to earn LEED Platinum certification
Located on the north side of the College of Design building, the $6.6 million, 23,735 gross-square-foot King Pavilion features a central, two-story “forum” surrounded by instructional studios used by all freshmen in the college, as well as sophomores in architecture, landscape architecture and interior design. “We are delighted to have the King Pavilion receive LEED Platinum certification,” said ISU President Gregory Geoffroy. “The King Pavilion stands as a testament to the commitment that Iowa State University has made to becoming a model ‘green’ university, in our daily operations as well as in our teaching, research and outreach programs.”
Posted in campus sustainability, energy, higher education, solutions, sustainability | No Comments »
Lindsey Graham on climate warming: “I am doing something different”
Saturday, February 27th, 2010
In a previous post, I mentioned that it’s worth listening to Lindsey Graham (R-SC) to understand what might move conservative politicians towards a serious conversation about climate warming.
Tom Friedman does just that in Sunday’s NY Times.
Graham’s reasons for taking climate change seriously: politics, jobs, and legacy. His story is unusual and refreshing:
“I have been to enough college campuses to know if you are 30 or younger this climate issue is not a debate. It’s a value. These young people grew up with recycling and a sensitivity to the environment — and the world will be better off for it. They are not brainwashed. … From a Republican point of view, we should buy into it and embrace it and not belittle them. You can have a genuine debate about the science of climate change, but when you say that those who believe it are buying a hoax and are wacky people you are putting at risk your party’s future with younger people.”
….And for those Republicans who think this is only a loser, Senator Graham says think again: “What is our view of carbon as a party? Are we the party of carbon pollution forever in unlimited amounts? Pricing carbon is the key to energy independence, and the byproduct is that young people look at you differently.” Look at how he is received in colleges today. “Instead of being just one more short, white Republican over 50,” says Graham, “I am now semicool. There is an awareness by young people that I am doing something different.”
Posted in behavior, climate economics, energy, solutions | No Comments »
Al Gore weighs in on the state of climate change
Saturday, February 27th, 2010
…in an op-ed piece in today’s NY Times.
Excerpts (links his):
[T]he scientific enterprise will never be completely free of mistakes. What is important is that the overwhelming consensus on global warming remains unchanged. It is also worth noting that the panel’s scientists — acting in good faith on the best information then available to them — probably underestimated the range of sea-level rise in this century, the speed with which the Arctic ice cap is disappearing and the speed with which some of the large glacial flows in Antarctica and Greenland are melting and racing to the sea.
Because these and other effects of global warming are distributed globally, they are difficult to identify and interpret in any particular location. For example, January was seen as unusually cold in much of the United States. Yet from a global perspective, it was the second-hottest January since surface temperatures were first measured 130 years ago.
Similarly, even though climate deniers have speciously argued for several years that there has been no warming in the last decade, scientists confirmed last month that the last 10 years were the hottest decade since modern records have been kept.
The heavy snowfalls this month have been used as fodder for ridicule by those who argue that global warming is a myth, yet scientists have long pointed out that warmer global temperatures have been increasing the rate of evaporation from the oceans, putting significantly more moisture into the atmosphere — thus causing heavier downfalls of both rain and snow in particular regions, including the Northeastern United States. Just as it’s important not to miss the forest for the trees, neither should we miss the climate for the snowstorm.
….The political paralysis that is now so painfully evident in Washington has thus far prevented action by the Senate — not only on climate and energy legislation, but also on health care reform, financial regulatory reform and a host of other pressing issues.
….Some analysts attribute the failure to an inherent flaw in the design of the chosen solution — arguing that a cap-and-trade approach is too unwieldy and difficult to put in place. Moreover, these critics add, the financial crisis that began in 2008 shook the world’s confidence in the use of any market-based solution.
But there are two big problems with this critique: First, there is no readily apparent alternative that would be any easier politically….Second, we should have no illusions about the difficulty and the time needed to convince the rest of the world to adopt a completely new approach.
Updates: There is a wide range of opinion on the IPCC these days:
- Union of Concerned Scientists weighs in on climate warming and the criticism of the IPCC.
- Roger Pielke, Jr. has been writing a lot about the IPCC recently (here, here, here)
- Joe Romm at Climate Progress
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Photo credit: http://www.flickr.com/photos/adc/ / CC BY 2.0
Tags: Al Gore
Posted in climate change science, climate economics, climate skeptics deniers and contrarians, communication and framing, energy, policy, sustainability | No Comments »
Energy breakthrough? Have fuel cells for the masses finally arrived?
Monday, February 22nd, 2010
Huff Post is running a story on a recent 60 Minutes piece about a new kind of fuel cell—the “Bloom Box” —that is already powering companies like Google, Fed Ex, and EBay (click on the link for video of this story).
It runs on natural gas, and two of these little boxes (about the size of a shoe box combined) could conceivably power your entire home.
Estimated cost: $3,000 for off-the-grid electricity.
It will be interesting to see if these are commercially viable and what else Silicon Valley has in store over the next five years. Along with electric cars, which roll into showrooms in a matter of months, we are on the cusp of some pretty big technology transformations.
Update: An educated guess from one of my colleagues, Andy Price, in the energy business:
I hope I am wrong, but the Bloom Box looks like it suffers from the same problem that all fuel cell companies are suffering from: their systems are really expensive per KW.
If Ebay paid $700,000 to $800,000 per unit for 5 units, as was suggested in the story, this would be $3.5 to $4 million. If they saved the stated $100,000 in 9 months this would be a 26 to 30 year payback – and with a fuel cell using natural gas you still need a natural gas pipe and have associated carbon emissions.
If Bloom can somehow deliver the dramatic cost reductions that they claim
this could start to look more attractive but until Bloom provides additional
details, it looks like more hype than substance. Many other well funded
companies including UTC, Honda and GE are working on similar technology and none have been able to deliver the big breakthrough. Yet.
Update 2: Wired comes to a similar conclusion–too pricey.
Tags: fuel cell
Posted in energy, solutions, sustainability, technology | No Comments »
How much energy to make a meal?
Friday, February 12th, 2010
Science Magazine (subscription required) is running a special issue this week on food security. There are so many articles, it’s hard to know where to start.
Let’s go with an interesting, visible example from a news article showing that different meals can require vastly different amounts of energy to make (click on this link for a nice downloadable color figure).
(1) Beans: Amount of energy needed to grow, package, transport, and cook (what I assume to be one serving) in Sweden. Note, a megajoule is one million joules, or about 240 dietary calories—the amount of energy in almost 2 cans of soda:
- Brown beans (8.9 megajoules, 2,127 dietary calories)
- Yellow peas (5 megajoules, 1,195 dietary calories)
- Imported soybeans (7.9 megajoules, 1888 dietary calories)
- Imported brown beans (11 megajoules, 2,629 dietary calories)
- Imported canned beans (20 megajoules, 4,780 dietary calories)
Bottom line: Commercial canning is energy intensive and food miles matter.
(2) A single meat-based dinner
Amounts of energy to grow, package, transport, and cook each meal:
- Dinner 1 (19 megajoules, 4541 dietary calories to make)
- Beef (9.4)
- Rice (1.1)
- Greenhouse tomatoes (4.6)
- Wine (4.2)
- Dinner 2 (6.1 megajoules, 1457 dietary calories to make)
- Chicken (4.37)
- Potatoes (0.91)
- Carrots (0.5)
- Cooking oil (0.3)
- Tap water (0)
Both of these dinners yielded about the same dietary energy to the eater:
- Dinner 1: 2.52 megajoules, 602 dietary calories
- Dinner 2: 2.60 megajoules, 621 dietary calories
This means that dinner 1 yields about 13% of the energy required to make it, whereas dinner 2 yields about 43%.
Bottom line: It takes three times more energy to make dinner 1 than dinner 2. More energy use with conventional agriculture means more fossil fuel use and more climate warming.
Science 327: 809 DOI: 10.1126/science.327.5967.809
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Photo credit: http://www.flickr.com/photos/bludgeoner86/ / CC BY 2.0
Posted in energy, food and agriculture | 2 Comments »
Is a post-Copenhagen roadmap emerging?
Monday, February 1st, 2010
Over the past few years, there have been a couple of major approaches for dealing with climate change:
- Use political tools to set emissions targets (e.g., 80% reduction by 2050);
- Invest heavily in green technology to drive green energy prices lower. Only then will these technologies take hold. Carbon reductions are an important byproduct but not the main goal.
Of course these are not mutually exclusive, but they might as well be given the way they have played out on the political stage.
With a lot of people down on political solutions to deal with climate change, strong advocates of the latter approach may now gain the upper hand. Folks like Shellenberger and Nordhaus have been arguing that green energy needs to be produced as quickly and cheaply as possible—forget all of the games with cap and trade or carbon taxes. Tom Friedman has also argued the need for swift action on energy, while also endorsing political solutions like carbon taxes.
If you look for areas that are gaining or have the potential to gain traction, there seem to be two levers that may work:
- the link between fossil fuel dependency, climate change, economic stability, and national security;
- the fact that China is eating our lunch with respect to clean energy development.
Both of these general concerns have attracted Republican support for green energy and climate change mitigation, including Senator Lindsey Graham (R-SC).
This may be a signal of potential game changers and the clearest path forward that we’ve seen in awhile.
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Photo credit: http://www.flickr.com/photos/worldeconomicforum/ / CC BY-SA 2.0
Tags: Copenhagen
Posted in climate economics, conflict, energy, policy, risk analysis, solutions | 1 Comment »
Haiti’s story
Wednesday, January 13th, 2010
Little good news is coming out of Haiti these days. There’s a deep social-environmental history that needs to be explored to understand why crises like poverty, AIDS, mudslides, and this week’s earthquake have been so devastating to the Haitian people.
I have written a bit about this history for one of the book projects I’m working on. Below are a few excerpts, but before reading further, please consider helping with the humanitarian relief for earthquake victims:
- Doctors Without Borders USA
- AmeriCares
- An additional list of aid agencies can be found at the NY Times.
Tags: Haiti
Posted in conflict, energy, food and agriculture, health, nature and culture, population, race and class, risk analysis, social science | 2 Comments »
Can we alter climate by installing white roofs?
Monday, January 11th, 2010
When reviewing the most popular words of 2009, I was surprised to see that “albedo” didn’t crack the top 5—Tweet, Obama, H1N1, Stimulus, and Vampire. I bet you were equally shocked.
Albedo is a simple concept—the reflectivity of a landscape—but it’s hugely important in understanding how the surface of the Earth impacts climate. As we saw in a recent post, things like thawing sea ice, northward advancing treeline, and asphalt paving all darken landscapes, causing more solar radiation to be absorbed and temperatures to climb—one of the reasons for the so-called urban heat island effect.
So what would happen if we were to install white roofs? In a forthcoming article1 in Geophysical Research Letters (subscription required), Keith Oleson and colleagues use biophysical models to address this.
Their answer: White roofs reflect more sunlight and cool buildings. Averaged over all urban areas in the world, the urban heat island effect declines by 33%, causing maximum and minimum daily temperatures to decrease by 0.6 and 0.3 degrees C, respectively.
At face value, this sounds great. But, there’s a potential hidden cost of cool buildings—heating. Interestingly, they found that white roofs caused space heating to increase more than air conditioner use declined, suggesting that energy use might actually increase with white roofs!
1Oleson, K. et al. (in press) The effects of white roofs on urban temperature in a global climate model. Geophysical Research Letters.
Related post: New ideas about how changing vegetation at high latitudes can cause climate warming to accelerate
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Photo credit: http://www.flickr.com/photos/calliope/ / CC BY 2.0
Tags: albedo
Posted in behavior, climate adaptation, climate change science, energy, solutions, sustainability, technology | No Comments »
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