by Jill Schmidt Graduate Research Assistant |
From September’s destructive hurricanes to the devastating
fires in California, recent natural disasters across the US have underscored
the many ways in which climate change is affecting urban areas. Moreover, while
these unpredictable disasters garner significant attention, climate change is
also intensifying important long-range weather-related hazards such as heat
waves, extreme precipitation, desertification, and loss of biodiversity.
Taken together, such effects – as well as the rollback of
federal-level policies – can discourage and overwhelm those facing
climate-change related impacts in their communities. However, as varied
examples from Florida, the west coast, Boston, and Boulder show, many states
and localities are taking meaningful steps to prepare for and perhaps even
mitigate the effects of climate change at the municipal, neighborhood, and
household levels.
September’s Hurricane Irma, for example, showed the positive impacts of successful efforts to update Florida’s building codes in the wake of Hurricane Andrew, which was the costliest natural disaster to affect the United States when it struck that state in 1992. After that disaster, many Florida residents pressed the state to update its building code (and for localities to enforce it). Two years later, the state approved a new building code focused on increasing the likelihood that buildings could resist hurricane-force winds by requiring such elements as shatterproof windows, fortified roofs, and reinforced concrete pillars. The code also requires that roofs be built of plywood and fastened with roofing nails (instead of less expensive but less resilient approaches that relied on particle board secured by staples).
Homes damaged by Hurricane Andrew, 1992 (Wikipedia) |
September’s Hurricane Irma, for example, showed the positive impacts of successful efforts to update Florida’s building codes in the wake of Hurricane Andrew, which was the costliest natural disaster to affect the United States when it struck that state in 1992. After that disaster, many Florida residents pressed the state to update its building code (and for localities to enforce it). Two years later, the state approved a new building code focused on increasing the likelihood that buildings could resist hurricane-force winds by requiring such elements as shatterproof windows, fortified roofs, and reinforced concrete pillars. The code also requires that roofs be built of plywood and fastened with roofing nails (instead of less expensive but less resilient approaches that relied on particle board secured by staples).
While these provisions are supposed to ensure that
structures can withstand winds of up to 111 miles per hour, Miami-Dade and
Broward counties went even further by requiring that new buildings be able to
withstand winds of at least 130 mph. (Moreover, as of January 2018, the codes
for the two counties will also include new elevation minimums for new
construction and substantial improvements to existing structures in flood
hazard areas.) The strengthened requirements helped minimize damage from
Hurricane Irma, according to Michael Finney, president and CEO of the
Miami-Dade Beacon Council (the region’s official economic council). In an op-ed
that appeared in the Miami Herald, he wrote: “Most property and buildings escaped with little or no structural
damage. The impact could have
been much worse, were it not for the lessons learned and actions taken to
fortify buildings and properties after Hurricane Andrew and subsequent storms.”
In the western part of the United States, where wildfires are a significant threat,
Community Planning Assistance for Wildfire (CPAW) is helping
communities take advantage of land-use planning to reduce the risk of damages
from fires. CPAW is a partnership funded by the U.S. Forest Service and private
foundations, and is run by Headwaters
Economics and Wildfire Planning International. The organization focuses particularly on protecting the
wildland-urban interface where human habitations are sparse but increasing
numbers of built structures can serve as fuel that can help wildfires spread. Since
its founding in 2015, CPAW has helped 18 cities and towns develop plans to
limit fires and reduce property damage by creating “defensible spaces” – areas cleared
of vegetation and other flammable materials as well as paths that firefighters can
use to fight approaching fires.California wildfires, 2017 (Wikipedia) |
In the western part of the United States, where wildfires are a significant threat,
Similiarly, in Boston, Neighborhood of Affordable Housing
(NOAH), a community development corporation in the city’s East Boston neighborhood,
used funding from the Kresge Foundation to launch ClimateCARE (Community
Action for Resilience Through Engagement). The effort, which focuses on
near-term needs related to energy efficiency, disaster emergency planning, and
social resiliency is trying to help residents prepare and plan for the impacts
of climate change, which could be significant because much of the neighborhood
is built on landfill in Boston Harbor. One notable part of this effort is a “Basement
Cleanup” program, which helps residents remove clutter, minimize the risk of
toxic leaks, prevent safety and health threats, and safely store sentimental
and important objects. Building in part on this work, the City of Boston announced
last fall that it was taking steps to protect East Boston and nearby
Charlestown from current and future flooding as a result of climate change.
A fourth notable example that addresses the mitigation of
climate change is Boulder, which in 2007 became the first city in the nation to
have a voter-approved tax dedicated to addressing climate change. The Climate Action Plan (CAP) tax is levied
on electric bills. Rates vary for residential, commercial, and industrial users;
the average annual tax is $21/year for residential users, $94 for commercial
accounts, and $9,400 for industrial users. Although the revenue funds many
programs, one program of note is EnergySmart, an energy-advising service and
rebate program for residents who make energy efficiency investments. Over 9,700
households in Boulder have participated in EnergySmart since its inception in
2010. The City of Boulder estimates that it has avoided the release of
more than 50,000 metric tons of emissions between 2007 to 2015 as a result of
CAP-funded programs, which has allowed the community to hold emissions
constant amid population and economic growth.
While these efforts are notable, they can be difficult to
implement, costly, and, at times, controversial. For example, mitigation plans
are critiqued for reducing greenhouse gas emissions in one region but offset by
increased or stagnant emissions in another locality. Further, many local decision-makers
are hesitant to invest in preparing for risks when they face immediate challenges
with limited budgets. However, prevention is likely to be more cost-effective
than re-building and
mitigation and adaptation projects can help communities avoid the costs
associated with natural hazard disasters and devastation. Mitigation and
adaptation initiatives may also offer promising opportunities to create local
jobs, support emerging industries, and help build more inclusive and resilient communities.
Given the gridlock at the federal level, such local initiatives may continue to
be at the cutting edge of climate-change policymaking in the US for some time
to come.
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