scholarly journals The Impact of COVID-19 Lockdowns on Air Quality—A Global Review

2021 ◽  
Vol 13 (18) ◽  
pp. 10212
Author(s):  
Abdullah Addas ◽  
Ahmad Maghrabi

The outbreak of the COVID-19 pandemic has emerged as a serious public health threat and has had a tremendous impact on all spheres of the environment. The air quality across the world improved because of COVID-19 lockdowns. Since the outbreak of COVID-19, large numbers of studies have been carried out on the impact of lockdowns on air quality around the world, but no studies have been carried out on the systematic review on the impact of lockdowns on air quality. This study aims to systematically assess the bibliographic review on the impact of lockdowns on air quality around the globe. A total of 237 studies were identified after rigorous review, and 144 studies met the criteria for the review. The literature was surveyed from Scopus, Google Scholar, PubMed, Web of Science, and the Google search engine. The results reveal that (i) most of the studies were carried out on Asia (about 65%), followed by Europe (18%), North America (6%), South America (5%), and Africa (3%); (ii) in the case of countries, the highest number of studies was performed on India (29%), followed by China (23%), the U.S. (5%), the UK (4%), and Italy; (iii) more than 60% of the studies included NO2 for study, followed by PM2.5 (about 50%), PM10, SO2, and CO; (iv) most of the studies were published by Science of the Total Environment (29%), followed by Aerosol and Air Quality Research (23%), Air Quality, Atmosphere & Health (9%), and Environmental Pollution (5%); (v) the studies reveal that there were significant improvements in air quality during lockdowns in comparison with previous time periods. Thus, this diversified study conducted on the impact of lockdowns on air quality will surely assist in identifying any gaps, as it outlines the insights of the current scientific research.

1997 ◽  
Vol 24 (1) ◽  
pp. 117-141 ◽  
Author(s):  
T. A. LEE

This study represents part of a long-term research program to investigate the influence of U.K. accountants on the development of professional accountancy in other parts of the world. It examines the impact of a small group of Scottish chartered accountants who emigrated to the U.S. in the late 1800s and early 1900s. Set against a general theory of emigration, the study's main results reveal the significant involvement of this group in the founding and development of U.S. accountancy. The influence is predominantly with respect to public accountancy and its main institutional organizations. Several of the individuals achieved considerable eminence in U.S. public accountancy.


2013 ◽  
Vol 13 (24) ◽  
pp. 12215-12231 ◽  
Author(s):  
Z. S. Stock ◽  
M. R. Russo ◽  
T. M. Butler ◽  
A. T. Archibald ◽  
M. G. Lawrence ◽  
...  

Abstract. We examine the effects of ozone precursor emissions from megacities on present-day air quality using the global chemistry–climate model UM-UKCA (UK Met Office Unified Model coupled to the UK Chemistry and Aerosols model). The sensitivity of megacity and regional ozone to local emissions, both from within the megacity and from surrounding regions, is important for determining air quality across many scales, which in turn is key for reducing human exposure to high levels of pollutants. We use two methods, perturbation and tagging, to quantify the impact of megacity emissions on global ozone. We also completely redistribute the anthropogenic emissions from megacities, to compare changes in local air quality going from centralised, densely populated megacities to decentralised, lower density urban areas. Focus is placed not only on how changes to megacity emissions affect regional and global NOx and O3, but also on changes to NOy deposition and to local chemical environments which are perturbed by the emission changes. The perturbation and tagging methods show broadly similar megacity impacts on total ozone, with the perturbation method underestimating the contribution partially because it perturbs the background chemical environment. The total redistribution of megacity emissions locally shifts the chemical environment towards more NOx-limited conditions in the megacities, which is more conducive to ozone production, and monthly mean surface ozone is found to increase up to 30% in megacities, depending on latitude and season. However, the displacement of emissions has little effect on the global annual ozone burden (0.12% change). Globally, megacity emissions are shown to contribute ~3% of total NOy deposition. The changes in O3, NOx and NOy deposition described here are useful for quantifying megacity impacts and for understanding the sensitivity of megacity regions to local emissions. The small global effects of the 100% redistribution carried out in this study suggest that the distribution of emissions on the local scale is unlikely to have large implications for chemistry–climate processes on the global scale.


2009 ◽  
Vol 8 (1) ◽  
Author(s):  
Chris Roseveare ◽  

Milestones are often seen as opportunities for reflection and reminiscence. As this edition of the journal coincides with the 10th anniversary of my consultant appointment I hope readers will forgive a couple of paragraphs of self-indulgence. The phrase: ‘Where did all that time go?’ will probably be familiar to physicians at a more advanced stage of their career. With medical students now returning as specialist registrars, and former house officers appearing as consultant colleagues, the passage of time is increasingly apparent. I recently realised that our current third year students were born in the year I clerked my first patient: surprisingly I still remember his name, age and diagnosis, unlike many of those (and all of the students!) who I have seen since. On a more positive note, there have clearly been a lot of changes over these ten years: at the time of my appointment in June 1999 there was just a small handful of ‘acute physicians’ in the UK. SAM meetings attracted barely 100 delegates, despite providing free admission, and most of us had planned our escape route in case the acute medicine concept went ‘belly-up’ before our retirement. Now, with several hundred acute medicine consultants, similar numbers of trainees, and ‘full speciality’ status rapidly approaching, job security should no longer be a major concern. Indeed, the last 12 months has seen a further considerable expansion of the speciality; all of the first cohort of acute medicine trainees in Wessex have secured consultant positions, and I am told that SAM now has close to 700 full members. What the next ten years will bring remains to be seen, but with an ageing population and year-round pressures from rising emergency admissions, acute medicine will surely continue to strengthen. As I indicated last time, an increasing number of research-based submissions will be trickling into the journal over the next few editions. The impact of alcohol on the Health Service is a subject which has been at the top of the political agenda in recent months. So it is timely to include an article highlighting its impact on the Acute Medical intake in a busy Teaching hospital in this edition of the journal. The finding that one-in-five patients admitted to the AMU were considered ‘hazardous’ drinkers will probably come as no surprise to acute physicians working elsewhere in the UK. In fact this figure may have been an under-estimate given that the number of units consumer per week was not documented in 30% of clerking records. The demographic shift away from the stereotype ‘middle-aged male’ drinker is also apparent with large numbers of females aged 40-59 falling into this category. Recent editions of this journal would not seem complete without mention of training in practical procedures. In this issue the SAM trainee representatives have summarised the recent trainee survey in this area, providing some recommendations which will hopefully be incorporated into the new curriculum. Readers who are becoming tired of this subject can be reassured that this should be the final article relating to this for the time being! I hope this edition provides interesting reading and please keep the submissions coming – although the review articles are usually solicited by the editorial team, we will continue to consider any submitted article for publication, provided there is a clear teaching message for those working in the field of Acute Medicine. Any feedback on the articles included in this or previous editions would also be welcome, and may be included in a future ‘viewpoint’ or ‘letters to the editor’ section.


2019 ◽  
Vol 2019 (256) ◽  
Author(s):  
Mauricio Vargas ◽  
Daniela Hess

Using data from 1980-2017, this paper estimates a Global VAR (GVAR) model taylored for the Caribbean region which includes its major trading partners, representing altogether around 60 percent of the global economy. We provide stilyzed facts of the main interrelations between the Caribbean region and the rest of the world, and then we quantify the impact of external shocks on Caribbean countries through the application of two case studies: i) a change in the international price of oil, and ii) an increase in the U.S. GDP. We confirmed that Caribbean countries are highly exposed to external factors, and that a fall in oil prices and an increase in the U.S. GDP have a positive and large impact on most of them after controlling for financial variables, exchange rate fluctuations and overall price changes. The results from the model help to disentangle effects from various channels that interact at the same time, such as flows of tourists, trade of goods, and changes in economic conditions in the largest economies of the globe.


2021 ◽  
Vol 23 (4) ◽  
pp. 14-16
Author(s):  
Sue Cowley

With childcare in the UK now being some of the most expensive in the world, questions about the sustainability of settings and the impact of funding on social mobility are at the centre of policy debates. Sue Cowley takes a look at the current situation with government funding and assesses the impact of the 30 hours entitlement.


Author(s):  
Andrew S. Herridge ◽  
Lisa J. James

This chapter looked at the implications of Brexit on the recruitment of international faculty, students, and the ability to obtain research funding. Higher education stakeholders have legitimate concerns regarding the impact of the UK's separation from the EU. In preemptive moves, students are transferring to institutions outside the UK and EU to universities that are welcoming and accommodating the special needs and circumstances of international scholars. Researchers are prematurely dissolving collaborative partnerships with colleagues to mitigate complications and lost funding expected, as a result of Brexit. There are universities exploring possible locations for new satellite campuses in other countries. Through the development of policies and treaties such as the Bologna Process, Lisbon Strategy, European Higher Education in the World initiative, the European Union has demonstrated the importance and purpose of higher education both in Europe and at the international level.


Author(s):  
Pamela A. Lemoine ◽  
Thomas Hackett ◽  
Michael D. Richardson

The leadership needs to develop new organizational structures and systems that will promote and encourage quality learning and the ability to assess the impact of the teaching. Governments across the world have steadily minimized their support for public higher education, and costs associated with gaining a degree have increased constantly over the last decade. Most universities are forced to adopt a restructuring model for commoditizing education to make a profit from large numbers of students. The road ahead for higher education is filled with challenges, risks and uncertainties that begin with education being valued as more than a simple commodity: education becomes a public good. Higher education is increasingly viewed as a major instrument of economic development. In order to hold universities accountable despite limited governmental budgets, many nations have adopted performance-based university research funding strategies for targeted programs.


2019 ◽  
Vol 11 (2) ◽  
pp. 488 ◽  
Author(s):  
Paola Fezzigna ◽  
Simone Borghesi ◽  
Dario Caro

International trade shifts production of a large amount of carbon dioxide (CO2) emissions embodied in traded goods from the importing country to the exporting country. The European Union (EU) plays a prominent role in the flow of international-related emissions as it accounts for the second largest share of global exports and imports of goods. Consumption-based accountings (CBA) emerged as alternative to the traditional emission inventories based on the Intergovernmental Panel on Climate Change (IPCC) guidelines. According to the IPCC criteria, countries where products are consumed take no responsibility for the emissions produced by exporter countries, thus neglecting the emissions embodied in trade. By taking this aspect into account, CBA are considered of great importance in revealing emissions attributed to the final consumer. Using a CBA approach, this paper evaluates the impact of international trade in the EU in terms of CO2 emissions, looking both at the internal trade flows within the EU-28 and at the external trade flows between the EU and the rest of the world during the period 2012–2015. We find that the EU is a net importer of emissions as its emissions due to consumption exceed those due to production. In particular, in 2015 the ratio between import- and export-embodied emissions was more than 3:1 for the EU-28 that imported 1317 Mt CO2 from the rest of the world (mainly from China and Russia) while exporting only 424 Mt CO2. Concerning emissions flows among EU countries, Germany represents the largest importer, followed by the UK. To get a deeper understanding on possible environmental implications of Brexit on UK emission responsibilities, the paper also advances a few hypotheses on how trade flows could change based on the existing trade patterns of the UK. Data analysis shows that a 10% shift of UK imports from EU partners to its main non-EU trading partners (India, China, and US) would increase its emission responsibility by 5%. The increase in UK emission responsibility would more than double (+11%) in case of a 30% shift of UK imports. Similar results would apply if UK replaced its current EU partners with its main Commonwealth trading partners as a result of Brexit.


2020 ◽  
Vol 9 (5) ◽  
pp. 73 ◽  
Author(s):  
Santiago Alonso García ◽  
Gerardo Gómez García ◽  
Mariano Sanz Prieto ◽  
Antonio José Moreno Guerrero ◽  
Carmen Rodríguez Jiménez

Nowadays, multiple phenomena have promoted an impact on society, constituting in some cases, not only a contribution of benefits but also of risks. Among them, the fake news phenomenon is considered one of the most burning phenomena today due to the risk it poses to society. In view of this situation, the research community has carried out numerous studies that seek to address this issue from a multidisciplinary perspective. Based on this, the objective of this work was to analyze the productivity and, therefore, the impact of this topic in the research community. To this end, this work advocated a scientometric-type methodology, through scientometric laws, impact indicators, and scientific evolution of 640 publications of the web of science (WOS). The results showed the impact of the fake news discipline today, which is considered an emerging issue that is of interest to many knowledge disciplines around the world. Likewise, the results showed that the publications not only have a focus on analyzing the veracity or not of the news, but that it begins to vertebrate a new line of an investigation directed to the informational education and towards the prevention of the consumption of this type of news through the internet.


2008 ◽  
Vol 10 (2) ◽  
pp. 3-40 ◽  
Author(s):  
Geraint Hughes

This article analyzes the impact on transatlantic relations of the October 1973 Arab-Israeli war, focusing on the discrepancy between U.S. and British views of Middle Eastern security before and during the conflict. Despite the institutional factors shaping the U.S.-British “special relationship” and the much greater power of the United States compared to Britain, British policy during the 1973 war was sharply at odds with U.S. policy. This article shows that British policy toward the Middle East was shaped not only by economic concerns (namely the importance of Arab oil to the UK economy) but also by the strategic requirement to undermine Soviet influence in the region and strengthen ties between the Western powers and the Arab states.


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