Cleaner Skies during the COVID-19 Lockdown

نویسندگان

چکیده

Abstract During spring 2020, the COVID-19 pandemic caused massive reductions in emissions from industry and ground airborne transportation. To explore resulting atmospheric composition changes, we conducted BLUESKY campaign with two research aircraft measured trace gases, aerosols, cloud properties boundary layer to lower stratosphere. From 16 May 9 June performed 20 flights early lockdown phase over Europe Atlantic Ocean. We found up 50% nitrogen dioxide concentrations urban areas GOME-2B satellite data, along carbon monoxide pollution hot spots. 20%–70% total reactive nitrogen, monoxide, fine mode aerosol concentration profiles German cities compared a 10-yr dataset passenger aircraft. The mass was significantly reduced below 5 km altitude, organic fraction also aloft, indicative of decreased precursor gas emissions. optical thickness perceptible shift sky color toward blue part spectrum (hence BLUESKY) increased shortwave radiation at surface. find that 80% decline air traffic led substantial oxides cruise altitudes, contrail cover, radiative forcing. light extinction depolarization by cirrus were regions substantially traffic. General circulation–chemistry model simulations indicate good agreement measurements when applying emission scenario. comprehensive documents major impact anthropogenic on composition.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Lockdown of an Orthopedic Department During COVID-19 Epidemics, Our Experience in a General Hospital

The COVID-19 disease is rapidly spreading around the world, affecting many countries and their healthcare systems.Like many other countries, Iran is struggling with the current situation. In this article, we aim to share our perspectiveson confronting obstacles mentioned above using appropriate hospital protocols during the COVID-19 crisis.We investigated and compared the numb...

متن کامل

Health Inequalities during the COVID-19 Pandemic

Pandemics are associated with significant and destructive national and global impacts on health, economy, society, and security. COVID-19 pandemic has imposed adverse economic consequences on the whole population. This is while the elderly and those with comorbidities, the economically disadvantaged and ethnic minorities were at increased risk of viral infection. Moreover, the mortality rate an...

متن کامل

The effect of COVID-19 lockdown on the air environment in India

COVID-19 is a huge tragedy for the world community. Everything in the world is affected due to this pandemic right from economy to resources where the economy of major countries of the world are facing recession and resources are surplus with no takers at all. The measures to contain COVID-19 pandemic include lockdown, social distancing, isolation, and home quarantine. Lockdown adopted by the d...

متن کامل

Facemask Risks during the COVID-19 Crisis

Introduction: With the increasing severity of the COVID-19 epidemic, wearing a mask was recommended. This recommendation seems to have created concern among the public. Wearing a mask generally reduces the risk of virus and therefore potentially saves lives. In healthy populations, wearing a mask does not appear to cause any harmful physiological changes, and the potentially life-saving benefit...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Bulletin of the American Meteorological Society

سال: 2022

ISSN: ['1520-0477', '0003-0007']

DOI: https://doi.org/10.1175/bams-d-21-0012.1