Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL089269 |
Disentangling the impact of the COVID‐19 lockdowns on urban NO2 from natural variability | |
Daniel L. Goldberg; Susan C. Anenberg; Debora Griffin; Chris A. McLinden; Zifeng Lu; David G. Streets | |
2020-08-17 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | TROPOMI satellite data show substantial drops in nitrogen dioxide (NO2) during COVID‐19 physical distancing. To attribute NO2 changes to NOX emissions changes over short timescales, one must account for meteorology. We find that meteorological patterns were especially favorable for low NO2 in much of the U.S. in spring 2020, complicating comparisons with spring 2019. Meteorological variations between years can cause column NO2 differences of ~15% over monthly timescales. After accounting for sun angle and meteorological considerations, we calculate that NO2 drops ranged between 9.2 – 43.4% among twenty cities in North America, with a median of 21.6%. Of the studied cities, largest NO2 drops (>30%) were in San Jose, Los Angeles, and Toronto, and smallest drops (<12%) were in Miami, Minneapolis, and Dallas. These normalized NO2 changes can be used to highlight locations with greater activity changes and better understand the sources contributing to adverse air quality in each city. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/291161 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Daniel L. Goldberg,Susan C. Anenberg,Debora Griffin,等. Disentangling the impact of the COVID‐19 lockdowns on urban NO2 from natural variability[J]. Geophysical Research Letters,2020. |
APA | Daniel L. Goldberg,Susan C. Anenberg,Debora Griffin,Chris A. McLinden,Zifeng Lu,&David G. Streets.(2020).Disentangling the impact of the COVID‐19 lockdowns on urban NO2 from natural variability.Geophysical Research Letters. |
MLA | Daniel L. Goldberg,et al."Disentangling the impact of the COVID‐19 lockdowns on urban NO2 from natural variability".Geophysical Research Letters (2020). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论