Flames and smoke rise from an oil storage facility during the March 7 attack in Iran.
Image credit: Alireza Sotakbar/ISNA/AP/Alamy
Israeli airstrikes on oil facilities in Tehran on March 7 released an unprecedented amount of sulfur dioxide, equivalent to a small volcanic eruption. This alarming event has the potential to affect air quality and cause acid rain as far away as China.
In a coordinated effort between the US and Israel, fighter jets targeted oil facilities, igniting massive fires at various depots and refineries. Firestorms illuminated the night sky while soot-laden rain fell for days, causing health hazards, including eye and skin irritation among residents.
Recent data from advanced Chinese satellites indicates that the sulfur dioxide plumes from these explosions and fires spread over an area of about 300,000 square kilometers, passing over several countries including Turkmenistan, Uzbekistan, Kyrgyzstan, Kazakhstan, and China.
The rapid attack led to a surge in emissions, releasing a total of 29,800 tonnes of sulfur dioxide, as reported by Yin Jianping from Wuhan University. For context, this volume is significantly higher than the 20,000 tons of sulfur dioxide expelled daily by Iceland’s Eyjafjallajokull volcano during its 2010 eruption, which caused widespread disruptions in air travel.
Measurements from satellites indicated that sulfur dioxide levels reached concentrations that can hinder lung function, irritate the eyes and throat, and exacerbate asthma and bronchitis, particularly in vulnerable populations such as children and the elderly.
The brief emissions event underscores the need to consider the long-term impact of such occurrences, as contaminants can deposit on water sources and agricultural land, leading to potential health risks from contaminated drinking water and food.
Sulfur dioxide can react with atmospheric chemicals to form sulfuric acid, contributing to smog and acid rain. Historical events like the Great Smog of 1952, which saw an estimated 12,000 deaths in London, serve as a stark reminder of the dangers of such pollution.
The sulfur dioxide produced by the attacks is reported to be 20 times greater than the annual emissions from some coal-fired power plants in developed countries, illustrating the severity of the situation.
In addition to sulfur dioxide, the destruction of oil facilities released soot and heavy metals into the environment. According to Lucy Carpenter from the University of York, the substantial sulfur dioxide emissions suggest the plume also contained harmful levels of pollutants like nitrogen oxides and polycyclic aromatic hydrocarbons, which have been linked to cancer.
“The significant release of sulfur dioxide from a single incident has serious implications for human health… across vast distances,” Carpenter stated.
The pollutants carried by wind can linger in the atmosphere for several days. The study’s ability to track the plume’s journey over such a large area was impressive, shedding light on the potential for far-reaching health impacts.
Although the plume lasted only three days—possibly insufficient for long-term cancer risk—satellite data is crucial for assessing pollution levels in the atmosphere. Carpenter warns that these pollutants can trigger asthma attacks, strokes, and heart attacks, especially among vulnerable groups.
The Fengyun-3 satellite constellation utilized in this research could provide real-time atmospheric data on sulfur dioxide and other critical pollutants, enhancing disaster response capabilities, Yin asserted. “Satellite observations can significantly improve pollution assessments and offer early warnings to affected areas.”
Topics:
Source: www.newscientist.com
