First infrared satellite monitoring of peak pollution episodes in China

Plumes of countless anthropogenic contaminants (especially particulate matter and deadly carbon monoxide) situated near walk out over China have the very first time been detected from space. The job was completed with a team in the Laboratoire Atmosph?res, Milieux, Findings Spatiales (CNRS / UPMC / UVSQ) together with Belgian scientists with support from CNES, using dimensions through the IASI infrared sounder released aboard the MetOp satellite. Their groundbreaking answers are released online online from the journal Geophysical Research Letters dated 17 The month of january 2014. They represent an important step towards enhanced monitoring of regional pollution and predicting of local pollution episodes, particularly in China.

Despite efforts through the Chinese government to lessen surface pollutants, China is frequently impacted by major polluting of the environment episodes. It has become an essential public health problem, since polluting of the environment causes greater than 300,000 premature deaths in China every year. In The month of january 2013, Beijing experienced an unparalleled pollution episode, mainly because of periodic coal consumption and unfavorable climate conditions (insufficient wind plus temperature inversion) that trapped the contaminants at walk out. In lots of regions, atmospheric levels of particulate matter (PM) arrived at values considered dangerous to human health, sometimes exceeding the daily threshold suggested through the World Health Organization (25 ?g/m3) with a factor of nearly 40.

To watch local and regional pollution, China comes with an quality of air monitoring network that continuously provides dimensions of key contaminants including PM, deadly carbon monoxide (CO) and sulfur dioxide (SO2). However, the physical distribution of calculating stations is patchy, which causes it to be hard to predict the introduction of pollution episodes. Within this context, satellite findings end up being very valuable because of their excellent physical coverage and horizontal resolution. Regrettably, such dimensions possess the drawback to being sensitive primarily at altitudes of three to 10 km. Using satellites to find out atmospheric composition near walk out was complicated so far.

The scientists have proven that, unlike anticipation, the IASI sounder has the capacity to identify plumes of contaminants even near walk out as lengthy as two the weather is met: climate conditions should be stable, which results in a build-from contaminants at walk out, and there has to be a substantial temperature distinction between the floor and also the air just above Earth's surface. In The month of january 2013, IASI measured high levels of anthropogenic contaminants for example CO, SO2, ammonia (NH3) and ammonium sulfate aerosols over Beijing and neighboring metropolitan areas. The IASI infrared sounder thus turns out to be suitable to monitoring these contaminants such conditions.

The work signifies a breakthrough in pollution monitoring from space. Using the launch of IASI-B, two IASI sounders can now collect infrared data from space and two times just as much information has therefore been available because the finish of The month of january 2013. It'll henceforth be easy to monitor pollution episodes connected with stable climate conditions more precisely and frequently. The job reveals new prospects for enhanced assessment and control over quality of air.

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New report examines national oil pollution threat from shipwrecks

May 20, 2013

14 May, 1942, U. S. Army Air Corps photographs of the burning tanker Potrero del Llano location.

Download here (Credit: Images courtesy of National Archives, College Park, MD )

NOAA presented to the U.S. Coast Guard today a new report that finds that 36 sunken vessels scattered across the U.S. seafloor could pose an oil pollution threat to the nation’s coastal marine resources. Of those, 17 were recommended for further assessment and potential removal of both fuel oil and oil cargo.

The sunken vessels are a legacy of more than a century of U.S. commerce and warfare. They include a barge lost in rough seas in 1936; two motor-powered ships that sank in separate collisions in 1947 and 1952; and a tanker that exploded and sank in 1984. The remaining sites are 13 merchant marine ships lost during World War II, primarily along the Atlantic Seaboard and Gulf of Mexico. To see a list of the ships and their locations, visit: http://sanctuaries.noaa.gov/protect/ppw/.

The report, part of NOAA’s Remediation of Underwater Legacy Environmental Threats (RULET) project, identifies the location and nature of potential sources of oil pollution from sunken vessels. Knowing where these vessels are helps oil response planning efforts and may help in the investigation of reported mystery spills--sightings of oil where a source is not immediately known or suspected. “This report is the most comprehensive assessment to date of the potential oil pollution threats from shipwrecks in U.S. waters,” said Lisa Symons, resource protection coordinator for NOAA’s Office of National Marine Sanctuaries. “Now that we have analyzed this data, the Coast Guard will be able to evaluate NOAA’s recommendations and determine the most appropriate response to potential threats.”

“The Coast Guard is pleased to receive these risk assessments from our partner agency NOAA and looks forward to our continued coordination on the matter of potential pollution associated with sunken vessels in U.S. waters,” said Capt. John Caplis, the Coast Guard’s chief of marine environmental response. “Coast Guard federal on-scene coordinators receiving the risk assessments will carefully review the data and incorporate it into their area contingency plans.”

In 2010, Congress appropriated $1 million for NOAA to develop a list of the most significant potentially polluting wrecks in U.S. waters, including the Great Lakes, specifically addressing ecological and socio-economic resources at risk. Those funds were not intended for oil or vessel removal.

NOAA maintains the internal Resources and UnderSea Threats (RUST) database of approximately 30,000 sites of sunken material, of which 20,000 are shipwrecks. The remaining items are munitions dumpsites, navigational obstructions, underwater archaeological sites, and other underwater resources.

Initial screening of these shipwrecks revealed 573 that could pose substantial pollution risks, based on the vessel’s age, type, and size. This includes vessels built after 1891, when U.S. vessels began using fuel oil; vessels built of steel; vessels over 1,000 gross tons, and any tank vessel.

Additional research about the circumstances of each vessel’s loss narrowed that number to 107 shipwrecks. Of those, some were deemed navigational hazards and demolished, and others were salvaged. Most of the 107 wrecks have not been directly surveyed for pollution potential, and in some cases little is known about their current condition.

To prioritize and determine which vessels are candidates for further evaluation, NOAA used a series of risk factors to assess the likelihood of substantial amounts of oil remaining onboard, and the potential ecological and environmental effects if that oil spills. Risk factors include the total oil volume onboard as cargo or fuel, the type of oil, and the nature of the sinking event. For example, a vessel that was struck by multiple torpedoes would likely contain less oil than a vessel that sank in bad weather.

After this third level of screening, 87 wrecks remained on the list developed for the Coast Guard’s area contingency plans. Among this group, NOAA determined that 36 shipwrecks are candidates for a “Worst Case” discharge event in which the shipwreck’s entire fuel oil and oil cargo would be released simultaneously, and recommended that 17 of these wrecks be considered for further assessment and feasibility of oil removal.

Six wrecks are potential candidates for a “Most Probable” discharge event, where a shipwreck could lose approximately 10 percent of its fuel oil or oil cargo. To date, known oil discharges from shipwrecks are typically in the “Most Probable” category or smaller.

The report, including 87 risk assessments, is not intended to direct Coast Guard activities, but rather provide the Coast Guard with NOAA’s scientific and technical assessment and guidance as a natural resource and cultural heritage trustee.

The Coast Guard, as the federal On-scene Coordinator for mitigating oil spills in the coastal marine environment, the Regional Response Teams, and local Area Committees, as established under the Oil Pollution Act of 1990, will review and incorporate the assessments into regional and area marine environmental response contingency plans. The individual risk assessments not only highlight concerns about potential ecological and socio-economic impacts, but also characterize most of the vessels as historically significant and many of them as grave sites, both civilian and military.

Funding for any assessment or recovery operations determined to be necessary is dependent upon the unique circumstances of the wreck. If a wreck still has an identifiable owner, that owner is responsible for the cost of cleanup. Coast Guard officials say that if no responsible party exists, the Oil Spill Liability Trust Fund would likely be accessed.

To view the report, 2012 Risk Assessment for Potentially Polluting Wrecks in U.S. Waters, visit http://sanctuaries.noaa.gov/protect/ppw/.

As America’s maritime first responder, the Coast Guard protects those on the sea, protects our nation from threats delivered by sea, and protects the sea itself. By executing our marine environmental protection responsibilities, the Coast Guard reduces the risk of harm to the marine environment by developing and enforcing regulations to prevent and respond to maritime oil spills and hazardous substance releases.

NOAA’s mission is to understand and predict changes in the Earth's environment, from the depths of the ocean to the surface of the sun, and to conserve and manage our coastal and marine resources. Join us on Facebook, Twitter and our other social media channels.

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China's pollution costs $112B in health care

China's unprecedented growth is carrying a steadily steeper price tag as its air pollution hikes the nation's health care costs, finds a new study by the Massachusetts Institute of Technology.

Although China has made substantial progress in reducing its air pollution, MIT researchers say its economic impact has jumped from $22 billion in 1975 to $112 billion in 2005. The costs result from both lost labor and the increased need for health care because ozone and particulates in air can cause respiratory and cardiovascular diseases.

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"The results clearly indicate that ozone and particulate matter have substantially impacted the Chinese economy over the past 30 years," Noelle Selin, an assistant MIT professor of engineering systems and atmospheric chemistry, said in announcing the findings that appear in the February edition of the journal Global Environmental Change.

The study, by researchers at the MIT Joint Program on the Science and Policy of Global Change, said pollution's economic impact has grown, because population growth increased the number of people exposed to it and higher incomes raised the costs associated with lost productivity.

The study "finds that the damages are even greater than previously thought," said Kelly Sims Gallagher, an associate professor of energy and environmental policy at Tufts University's Fletcher School, in the MIT announcement.

The researchers calculated these long-term impacts using atmospheric and economic modeling tools, which were especially important when it came to assessing the cumulative impact of ozone. They said China has only recently begun to monitor ozone , and it's become the world's largest emitter of mercury, carbon dioxide and other pollutants.

In the 1980s, they said China's particulate-matter concentrations were at least 10 to 16 times higher than the World Health Organization's annual guidelines. Even after major improvements, by 2005, they said the concentrations were still five times higher than what is considered safe and led to 656,000 premature deaths in China each year.

China is taking steps to mitigate air pollution, in partly by boosting its support for renewable energy sources such as wind and solar. Its hefty subsidies to its solar industry have prompted some U.S. manufacturers to file a complaint with the International Trade Commission. In January, the nation set a target to reduce its 2010 levels of carbon intensity (the amount of carbon emitted per unit of gross domestic product) 17% by 2015.

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