Ozone pollution levels dropped early in pandemic
Curtailed transportation led to steep drop in emissions
Feb 18, 2021 - by Staff
Global S&T Development Trend Analysis Platform of Resources and Environment
Ozone pollution levels dropped early in pandemic | |
admin | |
2021-02-18 | |
发布年 | 2021 |
语种 | 英语 |
国家 | 美国 |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
正文(英文) | Ozone pollution levels dropped early in pandemicCurtailed transportation led to steep drop in emissionsFeb 18, 2021 - by Staff During spring and summer of 2020, ozone at 1-8 kilometers (0.6-5 miles) above Earth’s surface fell by 7% on average across the Northern Hemisphere, a new study finds. The decrease is likely explained by curtailed transportation due to COVID-19 quarantines, according to the report, published in Geophysical Research Letters. Worldwide, surface traffic emissions went down by 14% and air-traffic emissions by 40% on average in 2020. The study was conducted by an international research team, including National Center for Atmospheric Research (NCAR) scientist James Hannigan. The scientists analyzed data from weather balloons and remote sensing instruments at 45 stations, including three managed by NCAR. Many of the observatories saw similar ozone decreases to levels that had not been recorded in two decades. “This is a remarkably large ozone reduction, over a very big region,” said Wolfgang Steinbrecht, an atmospheric scientist at the Deutscher Wetterdienst (German weather service) Hohenpeissenberg Meteorological Observatory, and lead author of the study. “The last time we’ve seen such low free tropospheric ozone in Hohenpeissenberg was 1976.” For more, see the American Geophysical Union news release. |
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来源平台 | National Center of Atmospheric Research |
文献类型 | 新闻 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/315537 |
专题 | 地球科学 资源环境科学 气候变化 |
推荐引用方式 GB/T 7714 | admin. Ozone pollution levels dropped early in pandemic. 2021. |
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