Archive for the ‘policy’ Category
« Older Entries |Land consumption and open space loss across U.S. cities
Tuesday, March 2nd, 2010
The issue of land use change is a complex, with many factors being important historically, such as
- population growth (more land required for more people)
- technology (e.g., automobiles made suburban expansion feasible)
- economics (cheaper land and rents in suburbs compared to cities)
- policy (things like 30-yr mortgages, mortgage insurance, and FHA loans had a large impact on urban sprawl because they often made it cheaper to own rather than rent)
- cultural values (the romanticized notion of a detached home in a safe, pollution-free neighborhood with good schools)
In this week’s PLoS One, Robert McDonald and colleagues1 examined land use change for 274 metro areas (figure 1) in the U.S. to determine tends across cities.
Their results were interesting (excerpts):
- 1.4 million ha of open space was lost, and the amount lost in a given city was correlated with population growth.
- American cities vary by more than an order of magnitude in their MSA-wide per capita land consumption. Generally large cities have small per capita land consumption, with the five smallest in 2000 being New York (459 m2/person), Miami (476 m2/person), Philadelphia (519 m2/person), Los Angeles (535 m2/person), and Washington, DC (536 m2/person). Conversely, many small cities have large per capita land consumption, with the five biggest in 2000 being Grand Forks, ND (5394 m2/person), Bismark, ND (3913 m2/person), Flagstaff, AZ (3381 m2/person), Enid, OK (3249 m2/person), and Cheyenne, WY (3073 m2/person).
- The per capita land consumption (m2/person) of most cities decreased on average over the decade from 1,564 to 1,454 m 2/person, but there was substantial regional variation and some cities even increased.
- Cities with greater conservation funding or more reform-minded zoning tended to decrease in per capita land consumption (scroll to table 1) more than other cities.
- The inequality of land consumption varied geographically, with less inequality on the East Coast compared to the West Coast (scroll to figure 4).
They provide a simplified snapshot of how development changes with history and geography (for a more-thorough yet readable treatment of land use in the U.S., check out Crabgrass Frontier by Kenneth Jackson):
The process of development plays out differently in cities with different socioeconomic histories. Moreover, cultural differences exist among and within many U.S. cities, leading to varying spatial patterns of development. However, a general historical pattern exists. In many U.S. cities, an urban core existed in the decades or centuries prior to the widespread use of the automobile, and these neighborhoods have high population density and small amounts of developed area per capita. The surrounding suburban and exurban areas, created predominately after WWII, contain residents living at lower population density and consume more land per capita. There are substantial economic links between these two zones, and in contemporary U.S. cities commuting occurs in both directions. Northeast U.S. cities that developed before the automobile typically follow this narrative. Many have a relatively dense urban core, but have adopted zoning policies that ensure contemporary suburban settlements occur at lower density. While they remain dense compared to other U.S. cities, they are getting less dense over time, as proportionally more of the population is in suburban areas. The declining manufacturing cities of the Rust Belt and the Southern Appalachians are an extreme example of this spreading out of population.
Southeastern U.S. cities, excluding Florida, are often newer and have less of a legacy of a dense urban core. They do not appear to be getting markedly denser, and the relatively fast population growth of these cities implies that their total impact on natural habitat in coming decades will be large. In contrast to the Southeast, Western cities appear to be getting denser, including those that do not have a historical legacy of a dense urban core such as Phoenix. These Western cities are often still growing quickly and consuming a great deal of land, but contemporary development is making these cities denser than they were previously. Many of these Western cities have a strong conservation culture, and the degree of conservation funding and reform-minded zoning correlates with how much denser they are getting. However, it should be noted that contemporary development in Western cities is still well below the densities found in the dense urban core of Northeastern U.S. cities, posing problems for designing effective public transit systems.
1McDonald, R., Forman, R., & Kareiva, P. (2010). Open Space Loss and Land Inequality in United States’ Cities, 1990–2000 PLoS ONE, 5 (3) DOI: 10.1371/journal.pone.0009509
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Photo Credit: http://www.flickr.com/photos/bobjagendorf/ / CC BY-NC 2.0
Posted in behavior, land use, nature and culture, policy, population, sustainability, transportation, urban | 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 »
Are business externalities really this big?
Friday, February 19th, 2010
How much does pollution (and other environmental impacts) from corporations cost each year? These costs, borne by society rather than corporations, are called negative externalities. An example is the cost of medical expenses and the loss of forests caused by air pollution.
The Guardian is running a story by Juliette Jowit suggesting that the total cost of externalities for the 3,000 largest companies in the world could be as much as $US 2.2 trillion in 2008. As the story points out, that’s a lot:
- more than the economies of all but 7 nations
- about one third the value of the profits of these companies
Excerpts (links by Jowit):
Later this year, another huge UN study – dubbed the “Stern for nature” after the influential report on the economics of climate change by Sir Nicholas Stern – will attempt to put a price on such global environmental damage, and suggest ways to prevent it. The report, led by economist Pavan Sukhdev, is likely to argue for abolition of billions of dollars of subsidies to harmful industries like agriculture, energy and transport, tougher regulations and more taxes on companies that cause the damage.
“What we’re talking about is a completely new paradigm,” said Richard Mattison, Trucost’s chief operating officer and leader of the report team. “Externalities of this scale and nature pose a major risk to the global economy and markets are not fully aware of these risks, nor do they know how to deal with them.”
“It’s going to be a significant proportion of a lot of companies’ profit margins,” Mattison told the Guardian. “Whether they actually have to pay for these costs will be determined by the appetite for policy makers to enforce the ‘polluter pays’ principle. We should be seeking ways to fix the system, rather than waiting for the economy to adapt. Continued inefficient use of natural resources will cause significant impacts on [national economies] overall, and a massive problem for governments to fix.”
Another major concern is the risk that companies simply run out of resources they need to operate, said Andrea Moffat, of the US-based investor lobby group Ceres, whose members include more than 80 funds with assets worth more than US$8tn. An example was the estimated loss of 20,000 jobs and $1bn last year for agricultural companies because of water shortages in California, said Moffat.
Tags: externality
Posted in climate economics, policy, pollutants | No 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 »
Extreme climate and the vulnerability of least-developed countries
Wednesday, January 6th, 2010
Happy New Year, everyone. Sorry for the lag in posts, but there wasn’t a lot happening in the news or journals over the past week.
A few years ago, I saw a talk by Thomas Schelling (Nobel laureate in economics) who argued that we need to accelerate the economic development of poor countries so that they are able to cope with climate change. This analysis is interesting, if not fraught with additional challenges, such as development in a carbon-based energy world hastening the very problem to which these nations are attempting to adapt.
In an article1 in the Early Edition of the Proceedings of the National Academy of Sciences (open access), Anthony Patt and colleagues argued that the need for assistance by Least Developed Countries (LDCs) is dependent on vulnerability, which, in turn, depends on both exposure to climate change and how socioeconomic factors affect the sensitivity of LDCs to climate change.
To assess this hypothesis, they first examined how deaths caused by disasters (floods, droughts, and storms) varied across the level of development in several LDCs. They used the UN Human Development Index—HDI, a composite metric of income, education, and life expectancy—as a proxy for development.
Here’s what they found…
Posted in climate adaptation, climate economics, policy, race and class, risk analysis, social science, sustainable development | No Comments »
Copenhagen post-mortem and analysis roundup
Monday, December 21st, 2009
Food for thought—today’s latest on what happened at Copenhagen, what it might mean, and where we go from here:
1. SLATE: The Party’s Over Why Copenhagen was the climate conference to end all climate conferences.
2. NY TIMES:
3. TREEHUGGER:
- The Copenhagen Accord: A Beginning
- What’s Missing in the Copenhagen Accord?
- Why is Everyone so Pissed at Obama?
4. GRIST:
- Copenhagen: a look back at the most striking narratives
- All over the map: Rounding up editorial reax to Copenhagen
- Letter to Bill McKibben: don’t blame Obama for Copenhagen
- A preliminary assessment of the Copenhagen Accord
- What’s missing in the Copenhagen accord?
5. WSJ: Climate Chaos: Is There a Silver Lining to the Copenhagen Fiasco?
6. PIELKE, JR: Post-Copenhagen: More questions than answers
7. BREAKTHROUGH INSTITUTE: BBC World Service: Who is to Blame at Copenhagen?
8. MONBIOT (GUARDIAN): If you want to know who’s to blame for Copenhagen, look to the US Senate
9. NISBET: Schwarzenegger Says It’s Time to Regionalize the Climate Change Debate
10. MCKIBBEN:
11. ROMM (CLIMATE PROGRESS)
12. MOTHER JONES: Obama’s Copenhagen Deal
13. THE VINE (NEW REPUBLIC):
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Photo credit: http://www.flickr.com/photos/miltoncorrea/ / CC BY-NC-ND 2.0
Tags: Copenhagen
Posted in policy, solutions, sustainability | No Comments »
Where might farmers turn for help with climate change?
Saturday, December 12th, 2009
In the Online First edition of Climatic Change, Tyler Tarnoczi and Fikret Berkes assess1,2 the sources and availability of information about climate adaptation to farmers in the Canadian provinces of Manitoba, Saskatchewan, and Alberta.
Farmers rely on several information sources for agricultural practices, which will likely be vital in helping food producers learn how to adapt to climate warming:
- social networks/experiential learning
- government
- industry (e.g., seed, machinery)
- producer and conservation organizations
- media
Here’s what they found…
Posted in climate adaptation, communication and framing, food and agriculture, nature and culture, policy | No Comments »
Ecosystem stewardship: sustainability strategies for a rapidly changing planet
Saturday, December 12th, 2009
That’s the title of a new article1,2 by Terry Chapin and colleagues in a forthcoming issue of Trends in Ecology and Evolution.
Human actions are having large and accelerating effects on the climate, environment and ecosystems of the Earth, thereby degrading many ecosystem services. This unsustainable trajectory demands a dramatic change in human relationships with the environment and life-support system of the planet. Here, we address recent developments in thinking about the sustainable use of ecosystems and resources by society in the context of rapid and frequently abrupt change.
To deal with these challenges, they advocate “ecosystem stewardship,” which has three core principles. Here are excerpts of these principles (slightly condensed/adapted by me); please check out the paper for details:
Posted in climate adaptation, nature and culture, policy, risk analysis, solutions, sustainable development | No Comments »
Innovative ideas for financing home energy efficiency
Wednesday, December 9th, 2009
Let’s face it, how many people have a spare $10k lying around for a new furnace? Not me, and I could use a new furnace.
Home weatherization and efficiency upgrades can make a big difference in U.S. carbon emissions. As we saw in a previous post, American households (including personal transportation) are responsible for
- 38% of the overall US carbon emissions
- 8% of global emissions
- more emissions of any single country except China
Unfortunately, there’s a big disconnect between things we can do to to save home energy and the ability for folks to pay for these improvements. New insulation, solar hot water, solar photovoltaics, high-efficiency furnaces: Take your pick….Each can cost $10k or more.
Fortunately, there are a lot of creative ideas coming to the rescue to help people defray these up-front costs:
- Municipalities can issue bonds that homeowners can borrow from to pay the up-front costs of improvements. The costs of these improvements are then payed back over an extended periods of time through raised property taxes. Homeowners effectively get a zero-interest loan from their cities.
- Banks can issue higher mortgages that include up-front costs for major energy efficiency improvements. These added costs are then spread out over the life of the mortgage, resulting in manageable monthly payments for homeowners.
- Or, the federal government can simply reimburse people for part of the costs of improvements. The so-called “Cash for Caulkers” program reported today by CNN is an example.
These kinds of programs make a lot of sense and have the potential to be game changers, along with helping Americans transition to electric vehicles as soon as possible.
Related post: Behavioral changes at home can have big impacts on U.S. emissions
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Photo credit: http://www.flickr.com/photos/nicksee/ / CC BY-NC 2.0
Tags: energy efficiency
Posted in energy, policy, solutions, sustainability, urban | 1 Comment »
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