“You still had some pretty bad smog events happening in the Beijing region, even during the lockdown,” Diamond said. The analysis also accounted for this past February’s relatively hot and humid weather in China, which made gases more likely to react and form airborne particles. So just for that reason, we might expect that the pollution in 2020 would be lower than in 2019,” Diamond said. “China passed a clean air law in 2013, and ever since you can see that pollution is going down. In addition to using a longer record, the model accounted for the expected effects of China’s environmental policies. These instruments use different wavelengths to monitor quantities like nitrogen oxides, airborne particulates and clouds. The authors used data from NASA’s Ozone Monitoring Instrument, or OMI, and Moderate Resolution Imaging Spectroradiometer, or MODIS, which have been monitoring the skies since 2005. “The scientific community was interested in documenting what changes actually occurred.” “Early in the quarantine period, there was some discussion that the Earth was healing itself, but some of those claims, like the dolphins in Venice, have turned out to be false,” Diamond said.
The combination of high average pollution and strict lockdown policy made a good test for how pandemic-related changes affected air quality. This image of Shanghai in October 2019 shows that although China’s air quality is improving, cities can experience high levels of pollution. It uses a statistical method that compares what was seen in February 2020 to what would have been expected without the pandemic. While other studies have already looked at air quality during the pandemic, this is the first to take a more rigorous view, using all 15 years of satellite data.
He is lead author of the study published Aug. This suggests the immediate climate-related impacts from the shutdown are negligible,” Diamond said. “On the other hand, our analysis shows no dramatic changes in the total amount of aerosol particles in the atmosphere, or in cloud properties. “During the February 2020 shutdowns in China there was a large and rapid decline in nitrogen dioxide - an air pollutant largely associated with transportation - that is unprecedented in the satellite record,” said Michael Diamond, a University of Washington doctoral student in atmospheric sciences. The event is also a way for Earth scientists to study how the atmosphere responds to sudden changes in emissions. Learning how behavior shifts due to the COVID-19 pandemic affect air quality is of immediate importance, since the virus attacks human lungs. Results show a striking drop in nitrogen oxides, a gas that comes mainly from tailpipes and is one component of smog. NASAĪtmospheric scientists have analyzed how the February near-total shutdown of mobility affected the air over China.
The new study calculates the size of this effect, accounting for other factors that would affect air quality. The difference shows the dramatic effects of reduced traffic during the February lockdown.
Nuzzo told OPB that she couldn't speak about the student's case for confidentiality reasons but that VPS does provide accommodations for those who qualify by working "with the student's family to consider all necessary information including documentation from the health provider.This satellite image, which was NASA’s Image of the Day for March 2, 2020, compares nitrogen dioxide over China in early January and mid-February 2020. "This is related to yesterday's protest against Washington state's requirement for staff and students to wear masks or face coverings in schools and on buses." 3 due to a disturbance by protesters who attempted to come onto Skyview's campus," said Patricia Nuzzo, communications director for Vancouver Public Schools, according to KGW8. "As a safety precaution, Skyview, Alki and Chinook were put into a lockdown on Sept. Gabriel added that their requested medical exemption was denied.įollowing the confrontation, Skyview High School and schools in close proximity - Alki Middle School and Chinook Elementary - were placed on lockdown, according to KGW8. The student's mother, Megan Gabriel, told OPB that the student could not wear a mask because they were diagnosed with post-traumatic stress disorder and anxiety, and wearing a mask could trigger a
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