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Record 1 of 51061
Large Gain in Air Quality Compared to an Alternative Anthropogenic Emissions Scenario
External Online Source: doi:10.5194/acp-16-9771-2016
Author and Affiliation:
Daskalakis, Nikos(Crete Univ., Environmental Chemical Processes Lab., Dept. of Chemistry, Crete, Greece)
Tsigaridis, Kostas(Columbia Univ., Ctr. for Climate Systems Research, New York, NY, United States)
Myriokefalitakis, Stelios(Crete Univ., Environmental Chemical Processes Lab., Dept. of Chemistry, Crete, Greece)
Fanourgakis, George S.(Crete Univ., Environmental Chemical Processes Lab., Dept. of Chemistry, Crete, Greece)
Kanakidou, Maria(Crete Univ., Environmental Chemical Processes Lab., Dept. of Chemistry, Crete, Greece)
Abstract: During the last 30 years, significant effort has been made to improve air quality through legislation for emissions reduction. Global three-dimensional chemistrytransport simulations of atmospheric composition over the past 3 decades have been performed to estimate what the air quality levels would have been under a scenario of stagnation of anthropogenic emissions per capita as in 1980, accounting for the population increase (BA1980) or using the standard practice of neglecting it (AE1980), and how they compare to the historical changes in air quality levels. The simulations are based on assimilated meteorology to account for the yearto- year observed climate variability and on different scenarios of anthropogenic emissions of pollutants. The ACCMIP historical emissions dataset is used as the starting point. Our sensitivity simulations provide clear indications that air quality legislation and technology developments have limited the rapid increase of air pollutants. The achieved reductions in concentrations of nitrogen oxides, carbon monoxide, black carbon, and sulfate aerosols are found to be significant when comparing to both BA1980 and AE1980 simulations that neglect any measures applied for the protection of the environment. We also show the potentially large tropospheric air quality benefit from the development of cleaner technology used by the growing global population. These 30-year hindcast sensitivity simulations demonstrate that the actual benefit in air quality due to air pollution legislation and technological advances is higher than the gain calculated by a simple comparison against a constant anthropogenic emissions simulation, as is usually done. Our results also indicate that over China and India the beneficial technological advances for the air quality may have been masked by the explosive increase in local population and the disproportional increase in energy demand partially due to the globalization of the economy.
Publication Date: Aug 04, 2016
Document ID:
20160010371
(Acquired Aug 17, 2016)
Subject Category: ENVIRONMENT POLLUTION
Report/Patent Number: GSFC-E-DAA-TN34791
Document Type: Journal Article
Publication Information: Atmospheric Chemistry and Physics (e-ISSN 1680-7324); Volume 16; Issue 15; 9771-9784
Publisher Information: Copernicus
Contract/Grant/Task Num: NNX14AB99A
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD United States
Description: 27p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AIR QUALITY; AIR POLLUTION; CARBON MONOXIDE; POPULATIONS; AEROSOLS; ENVIRONMENT EFFECTS; LAW (JURISPRUDENCE); CLIMATE CHANGE; ATMOSPHERIC COMPOSITION; INDIA; CHINA; TROPOSPHERE; VARIABILITY; METEOROLOGY; SIMULATION
Other Descriptors: AIR QUALITY; LAW (JURISPRUDENCE); SIMULATION
Availability Source: Other Sources
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