Reflecting upon 10 Years of Geoengineering Research: Introduction to the Crutzen + 10 Special Issue
“Ten years ago, Nobel laureate Paul Crutzen called for research into the possibility of reflecting sunlight away from Earth by injecting sulfur particles into the stratosphere. Across academic disciplines, Crutzen’s intervention caused a surge in interest in and research on proposals for what is often referred to as “geoengineering” – an unbounded set of heterogeneous proposals for intentionally intervening into the climate system to reduce the risks of climate change. To mark the 10 year anniversary of the publication of Paul Crutzen’s seminal essay, this special issue reviews the developments in geoengineering research since Crutzen’s intervention and reflects upon possible future directions that geoengineering research may take.”
A great collect of open access articles on Geoengineering
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Implications for US National Security of Anticipated Climate Change (2016)
Long-term changes in climate will produce more extreme weather events and put greater stress on critical Earth systems like oceans, freshwater, and biodiversity. These in turn will almost certainly have significant effects, both direct and indirect, across social, economic, political, and security realms during the next 20 years. These effects will be all the more pronounced as people continue to concentrate in climate-vulnerable locations, such as coastal areas, water-stressed regions, and ever-growing cities.
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J. Richter-Menge, J. E. Overland, and J. T. Mathis, Eds., 2016: Arctic Report Card 2016, http://www.arctic.noaa.gov/Report-Card.
- The average surface air temperature for the year ending September 2016 is by far the highest since 1900, and new monthly record highs were recorded for January, February, October and November 2016.
- After only modest changes from 2013-2015, minimum sea ice extent at the end of summer 2016 tied with 2007 for the second lowest in the satellite record, which started in 1979.
- Spring snow cover extent in the North American Arctic was the lowest in the satellite record, which started in 1967.
- In 37 years of Greenland ice sheet observations, only one year had earlier onset of spring melting than 2016.
- The Arctic Ocean is especially prone to ocean acidification, due to water temperatures that are colder than those further south. The short Arctic food chain leaves Arctic marine ecosystems vulnerable to ocean acidification events.
- Thawing permafrost releases carbon into the atmosphere, whereas greening tundra absorbs atmospheric carbon. Overall, tundra is presently releasing net carbon into the atmosphere.
- Small Arctic mammals, such as shrews, and their parasites, serve as indicators for present and historical environmental variability. Newly acquired parasites indicate northward sifts of sub-Arctic species and increases in Arctic biodiversity.
Under Water How Sea Level Rise Threatens the Tri-State Region, A Report of The Fourth Regional Plan, December 2016.
Coastal regions around the world are struggling to adjust to the gradual but relentless encroachment of ocean waters caused by climate change. The New York metropolitan area, with 23 million residents and some 3,700 miles of tidal coastline, faces a severe threat from sea level rise, yet relatively little has been done to address the inevitable permanent inundation of buildings, infrastructure and communities.
Permanent flooding from sea level rise is different than the intermittent flooding from storm surge or precipitation. Intermittent flooding recedes once a storm passes while sea level rise flooding is permanent and can be expected to encroach further inland over time. Sea level rise not only permanently alters the coast line. It also widens the area vulnerable to storm surge.
This report identifies the places in the New York, New Jersey and Connecticut metropolitan area that are most at risk of being permanently flooded, and describes the effects of 1, 3 and 6 feet of sea-level rise on neighborhoods, employment centers and infrastructure. Taking into account the latest scientific findings on sea level rise and climate change, the study finds that many of the major resilience policies, plans and projects under development today fall short of adequately addressing the long term, existential threat of permanent flooding from sea level rise.
Land Area Change in Coastal Louisiana After the 2005 Hurricanes: A Historical Perspective (from 1956) – Full Size Poster
This map only shows land as lost when it is turned to open water. There are large areas of land, such as the area east of New Orleans, that have lost most of their elevation since 1956, but are still just barely above water. They will disappear from the map as go below water, creating the impression of sudden land loss when the reality is that a long term process of subsidence. If you fly over the area or try to walk on this land, it is clear that it is already lost and is just awaiting the final death of the marsh to disappear into open water.
The U.S. Environmental Protection Agency has reviewed the U.S. Army Corps of Engineers’ September 2016 Millennium Bulk Terminals – Longview Draft Environmental Impact Statement (Corps DEIS), (EPA Region 10 Project Number: 13-0034-COE). We conducted our review according to EPA’s responsibilities under the National Environmental Policy Act (NEPA) and Section 309 of the Clean Air Act. Section 309 specifically directs the EPA to review and comment in writing on the enviromnental impacts associated with all major federal actions. Our review of the Corps DEIS considers the expected enviromnental impacts of the proposed action and whether the EIS meets the procedural and public disclosure purposes of NEPA. For the reasons described below, we are rating the Corps DEIS “3” – Inadequate.
Photo by Marli Miller – marlimillerphoto.com
A visualization of century-scale impacts of subsidence and sea level rise as seen in a time sequence reconstruction at Fort Proctor in St. Bernard Parish, Louisiana
by Chris McLindon
Fort Proctor is a pre-civil war military installation on the shore of Lake Borgne southeast of New Orleans. Historical records state that the fort was constructed 150 feet inland from the shore of the lake just north of the mouth of Bayou Yscloskey. This was also the site of Proctorville, a rail depot at the terminus of the Shell Beach Branch of the New Orleans and Gulf Railroad, which ran along the east bank of the Mississippi River to the town of Poydras, then down the natural levees of Bayou Terre aux Boeufs, Bayou La Loutre and Bayou Yscloskey to the shore of Lake Borgne.
While it can logically be assumed that the original elevations of the fort and the railroad depot were necessarily at least a few feet above sea level, neither of the architectural studies of the fort conducted by Tulane or Louisiana State Universities appear to include any definitive values for the land elevation at the time of construction. The fort is about 1,000 feet from the Shell Beach Continuously Operating Reference Station (CORS) of the National Geodetic Survey. This station is a part of the Global Navigational Satellite System that provides data for the three-dimensional Global Positioning System (GPS) network. In addition to surface positioning data this station provides a measurement of the vertical movement of the earth’s surface, which in this case can be used to estimate a rate of subsidence.
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Kelly A Burks-Copes et al., Risk Quantification for Sustaining Coastal Military Installation Asset and Mission Capabilities (RC-1701) (2014). (original link)
The objective of this project was to develop and test a risk-based methodology to evaluate threats to critical installation assets and quantify the potential loss of mission performance when installation capabilities were impacted by a combination of rising sea levels and coastal storm hazards.
Based on the analysis of NSN’s site-specific vulnerabilities, the project team found sea level rise to be a significant and pervasive threat multiplier to mission sustainability, significantly increasing loadings on built infrastructure, and dramatically increasing risks to system capabilities and service provisioning. Using the framework, the project team was able to identify several critical systems on the study site that were particularly vulnerable and likely to be incapacitated once sea levels rise above 1.0 meter on the site. The results show that the probabilities of damage to infrastructure and losses in mission performance increased dramatically once 0.5 meters of SLR was experienced, indicating a “tipping point,” or threshold, that should be considered when undertaking future planning or operational activities on the installation.
FEMA, 2010. Substantial Improvement / Substantial Damage Desk Reference, Federal Emergency Management Agency, Washington, DC
When buildings undergo repair or improvement, it is an opportunity for local floodplain
management programs to reduce flood damage to existing structures. More than 21,000 communities
participate in the National Flood Insurance Program (NFIP), which is managed by
the Federal Emergency Management Agency (FEMA). To participate in the NFIP, communities
must adopt and enforce regulations and codes that apply to new development in Special Flood
Hazard Areas (SFHAs). Local floodplain management regulations and codes contain minimum
NFIP requirements that apply not only to new structures, but also to existing structures which
are “substantially improved (SI)” or “substantially damaged (SD).”
Enforcing the SI/SD requirements is a very important part of a community’s floodplain management
responsibilities. There are many factors that local officials will need to consider and
several scenarios they may encounter while implementing the SI/SD requirements. This Desk
Reference provides practical guidance and suggested procedures to implement the NFIP requirements
This Desk Reference provides guidance on the minimum requirements of the NFIP regulations.
State or locally-adopted requirements that are more restrictive take precedence (often referred
to as “exceeding the NFIP minimums” or “higher standards”).
Most Corps of Engineers wetlands projects require the state or other non-federal sponsor to pay for part of the cost. This is both a cost-sharing measure and a measure to make sure that the state really needs the project – without a match, state politicians would demand unlimited projects from the Corps as economic development. Louisiana generally tries to avoid paying the match on projects, but unless Congress passes a law waiving the match on specific projects, the state has to pay for what has been done and nothing new will be done until the state pay’s the necessary match. This dispute arises from the push to close the Mississippi River Gulf Outlet canal after Hurricane Katrina.
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