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[ Analysis of satellite imagery shows reduced NO2 in China, Italy ]

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NO2 emissions rising in China as country recovers from coronavirus lockdown

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From December 20 to early March, the imagery showed a 20%-30% decline in particulate matter overall throughout China, starting in Wuhan, the epicenter of the novel coronavirus outbreak, and moving outward over the rest of the country. Analysis of satellite imagery shows News Coronavirus impact: Satellite images show world cities before and after ...CNBC7 hours agoBefore-and-after satellite images starkly show just how much things have changed across the world as the coronavirus outbreak ... The drop was most pronounced from mid January to late February, hitting 40% over major cities, after China took the severest measures to contain the outbreak. Satellite images show less pollution over the US as coronavirus shuts down ...Mercury News16 hours agoAs millions of Americans are kept from work, school and most public places as coronavirus is on the rise, satellite images show ... The decrease would have been helped by celebrations for the Chinese New Year, which lower emissions around this time annually, Yet particulate matter measurements in February were still lower compared to the last three years of data. Around late February and up to the last days of data, based on a ten-day moving average and running to March 16, clearly defined areas of particulate matter can be seen returning. How to Interpret a Satellite Image: Five Tips and Strategies digital photographs, satellite images are made up of little dots called pixels. The width of each pixel is the satellite’s spatial resolution. Commercial satellites have a spatial resolution down to 50 centimeters per pixel. The most detailed NASA images show 10 meters in each pixel. Now that China’s declaring the worst of the outbreak over, and desperate to get its supply chain running again, it could mean quick return to compromised air quality.


Publisher: Autoblog
Date: 2020-03-20 15:55:00
Author: jonathon ramsey
Twitter: @therealautoblog
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Study: Coronavirus Lockdown Likely Saved 77,000 Lives In China Just By Reducing Pollution

China’s coronavirus lockdown likely saved tens of thousands of lives by slashing air pollution from factories and vehicles, according to a new analysis by a Stanford University scientist.

‘Even under these more conservative assumptions, the lives saved due to the pollution reductions are roughly 20x the number of lives that have been directly lost to the virus,’ Burke writes, using statistics current on March 8.

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Burke cautions that his calculation is a prediction of mortality impacts, not a measurement. Introduction to image space analysis—ArcGIS Pro ... imagery is often collected at angles greater than 15 degrees off-nadir, as is aerial and drone imagery. The most common type of analysis of oblique imagery is manual image interpretation. Human cognition is very effective in the visual interpretation of imagery. And his numbers do not include other negative consequences of the lockdown.

Publisher: Forbes
Date: 2020-03-16
Author: Jeff McMahon
Twitter: @forbes
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Air pollution plummeted in China due to coronavirus. Satellite imagery - Wikipedia imagery are images of Earth or other planets collected by imaging satellites operated by governments and businesses around the world. Satellite imaging companies sell images by licensing them to governments and businesses such as Apple Maps and Google Maps. It’s starting to go up again

When China enforced strict lockdowns and factory closures to limit the spread of the novel coronavirus earlier this year, the rate of air pollution over the country went down significantly, satellite imagery shows.

That same imagery is now showing the rate of nitrogen dioxide (NO2) ramping back up as those measures are slowly lifted due to a steady drop in COVID-19 cases.

The imagery is based off data from the Copernicus Sentinal-5P, one of several satellites that monitor the Earth’s environment for the European Space Agency.

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Publisher: Global News
Twitter: @globalnews
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Coronavirus pandemic leading to huge drop in air pollution

The coronavirus pandemic is shutting down industrial activity and temporarily slashing air pollution levels around the world, satellite imagery from the European Space Agency shows.

One expert said the sudden shift represented the ‘largest scale experiment ever’ in terms of the reduction of industrial emissions.

Readings from ESA’s Sentinel-5P satellite show that over the past six weeks, levels of nitrogen dioxide (NO2) over cities and industrial clusters in Asia and Europe were markedly lower than in the same period last year.

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Publisher: the Guardian
Date: 2020-03-23T12:01:50.000Z
Author: Jonathan Watts
Twitter: @guardian
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Coronavirus: emissions fall shows what can be achieved on climate change, experts say

Publisher: The National
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Greetings Earthlings: Those crazy UFOs again! The data presented above may one day be zapped to another dimension. Just thought you should be aware. Hey, buddy, why are all the planets not aligning?