منابع مشابه
Arctic air pollution: origins and impacts.
Notable warming trends have been observed in the Arctic. Although increased human-induced emissions of long-lived greenhouse gases are certainly the main driving factor, air pollutants, such as aerosols and ozone, are also important. Air pollutants are transported to the Arctic, primarily from Eurasia, leading to high concentrations in winter and spring (Arctic haze). Local ship emissions and s...
متن کاملA Case–Crossover Study of Wintertime Ambient Air Pollution and Infant Bronchiolitis
UNLABELLED We examined the association of infant bronchiolitis with acute exposure to ambient air pollutants. DESIGN We employed a time-stratified case-crossover method and based the exposure windows on a priori, biologically based hypotheses. PARTICIPANTS We evaluated effects in 19,901 infants in the South Coast Air Basin of California in 1995-2000 with a hospital discharge record for bron...
متن کاملSingle-Particle Characterizations of Ambient Aerosols during a Wintertime Pollution Episode in Nanning: Local Emissions vs. Regional Transport
Ambient aerosol during a heavily polluted episode in wintertime was characterized using real-time single particle aerosol mass spectrometry (SPAMS) in urban Nanning, a capital city in the Southwestern China. More than two million individual particles analyzed by SPAMS were classified into 8 major clusters based on the mass spectral patterns. A group of vanadium-rich particles were identified as...
متن کاملA new indicator on the impact of large-scale circulation on wintertime particulate matter pollution over China
Extreme particulate matter (PM) air pollution of January 2013 in China was found to be associated with an anomalous eastward extension of the Siberian High (SH). We developed a Siberian High position index (SHPI), which depicts the mean longitudinal position of the SH, as a new indicator of the large-scale circulation pattern that controls wintertime air quality in China. This SHPI explains 58 ...
متن کاملThe wintertime two-day wave
The wintertime two-day wave in the Polar Stratosphere, Mesosphere and lower Thermosphere D. J. Sandford, M. J. Schwartz, and N. J. Mitchell Centre for Space, Atmospheric & Oceanic Science, Department of Electronic and Electrical Engineering, University of Bath, Bath, BA2 7AY, UK Microwave Atmospheric Science Group, Jet Propulsion Laboratory, 4800 Oak Grove Dr, Pasadena, CA 91109-8099, USA Recei...
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ژورنال
عنوان ژورنال: Science
سال: 2019
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.363.6434.1412-g