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Atmosphere
Special Issues
Mesoscale and Long-Range Circulations Driving Atmospheric Air Concentrations
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Mesoscale and Long-Range Circulations Driving Atmospheric Air Concentrations

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Meteorology".

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 5785

Special Issue Editor

Dr. Miguel Ángel Hernández-Ceballos

E-Mail Website
Guest Editor
Department of Physics, University of Cordoba, 14071 Córdoba, Spain
Interests: Environment; environmental impact assessment; air quality; atmospheric pollution; wrf; numerical weather prediction; atmosphere; numerical modeling; atmospheric physics; atmospheric modeling

Special Issue Information

Dear Colleagues,

High air concentrations of pollutants have a great impact on humand health and environment, which results in the reduction of quality of life. The atmosphere is the medium of transit from the source to the receptor, and hence, meteorological conditions are the key factor, through atmospheric chemical reactions/transformations and dynamic processes, to understand the temporal and spatial variability, and the occurrence of high air concentrations. The characterization of this link at different meteorological scales is relevant to support decision-makers regarding air control and quality strategies. This Special Issue is devoted to all theoretical, modelling, and observational aspects to evaluate source-receptor relationship for pollutants. Studies on meso- and synoptic scales characterizing the atmospheric transport and dispersion of air concentrations are of interest. The topics of this special issue include the identification, characterization and assessment of the atmospheric behaviour and routes of pollutants, such as primary (e.g. VOCs, NOx), or secondary (e.g. ground-level O3, NO2), radioactive (e.g. radon, cesium,...) and biological (e.g. pollen), through the atmosphere from source to receptor points/regions, and the analysis of high air concentrations and the related meteorological conditions, and atmospheric transport and dispersion processes. Studies dealing with the use of atmospheric tracers to characterize mesoscale circulations are also within the scope.

Dr. Miguel Ángel Hernández-Ceballos
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atmosphere is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • mesoscale circulations
  • long-range transport
  • air pollutants
  • meteorological observations
  • biological particles
  • radioactive pollutants
  • atmospheric dispersion modeling
  • air masses

Published Papers (3 papers)

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Research

19 pages, 2744 KiB  
Article
Analysis of Ozone Concentrations between 2002–2020 in Urban Air in Northern Spain
by M. Ángeles García, Javier Villanueva, Nuria Pardo, Isidro A. Pérez and M. Luisa Sánchez
Atmosphere 2021, 12(11), 1495; https://doi.org/10.3390/atmos12111495 - 11 Nov 2021
Cited by 3 | Viewed by 1456
Abstract
This paper analyses surface ozone measurements at five stations in an urban area (Valladolid) in the upper Spanish plateau over the period 2002–2020. Temporal evolutions, the relationship between ozone and other pollutants such as nitrogen oxides, and the assessment of the ozone concentration [...] Read more.
This paper analyses surface ozone measurements at five stations in an urban area (Valladolid) in the upper Spanish plateau over the period 2002–2020. Temporal evolutions, the relationship between ozone and other pollutants such as nitrogen oxides, and the assessment of the ozone concentration trend during the study period were analysed. Daily evolution of ozone at all the stations showed mean maximum concentrations in the afternoon, 15:00 GMT, with values ranging between 73.8 and 80.9 µg m−3, evidencing the influence of photochemical processes favoured by solar radiation in ozone formation. The lowest levels were recorded at night and in the early morning, 7:00 GMT, and were between 23.4 and 32.3 µg m−3, related with the reduction by NO reactions and deposition processes. A broad spring–summer peak between May and July was seen, with the highest values in the latter, with a mean value of up to 73.8 µg m−3. The variation in the monthly mean ozone concentrations of the different percentiles was analysed using a harmonic model. The empirical equation described the experimental values satisfactorily, with a confidence level of 95% and coefficients of determination above 80%, confirming the major decreasing trend in the ozone peak values over the study period. Full article
(This article belongs to the Special Issue Mesoscale and Long-Range Circulations Driving Atmospheric Air Concentrations)
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15 pages, 3703 KiB  
Article
Five Years (2014–2018) of Beta Activity Concentration and the Impact of Synoptic and Local Meteorological Conditions in Bilbao (Northern Spain)
by Natalia Alegría, Miguel Ángel Hernández-Ceballos, Margarita Herranz, Raquel Idoeta and Fernando Legarda
Atmosphere 2021, 12(10), 1323; https://doi.org/10.3390/atmos12101323 - 10 Oct 2021
Cited by 3 | Viewed by 1307
Abstract
The aim of this paper is to statistically characterize gross beta activity concentrations in ground-level air in Bilbao (northern Spain) by analysing five years (2014–2018) worth of weekly measurements in aerosols collected in filters to analyse the impact of local meteorological parameters on [...] Read more.
The aim of this paper is to statistically characterize gross beta activity concentrations in ground-level air in Bilbao (northern Spain) by analysing five years (2014–2018) worth of weekly measurements in aerosols collected in filters to analyse the impact of local meteorological parameters on concentrations. In addition, synoptic meteorological scenarios associated with anomalous beta surface activity concentrations were identified. Over this five-year period, beta activity concentrations ranged from 35.45 µBq/m3 to 1778 µBq/m3 with a mean of 520.12 ± 281.77 µBq/m3. A positive correlation was found with the alpha concentrations (0.67), with an average of 0.138 for the alpha/beta ratio, and a low correlation was found with 7Be (0.16). Statistical analysis identified a seasonal component in the time series, increasing, on average, beta activity concentrations from winter to autumn. The highest beta activity concentrations were measured under the arrival of southerly land winds with low wind speeds, while the wind analysis (surface winds and air masses) of two different seasonal periods (autumn 2015 and winter 2017) have highlighted how small variations in synoptic and local winds highly influence beta activity concentrations. These results are relevant to understand the meteorological factors affecting beta activity concentrations in this area and hence to define meteorological scenarios that are in favour to high/anomalous surface activity concentrations that are harmful to the environmental and public health. Full article
(This article belongs to the Special Issue Mesoscale and Long-Range Circulations Driving Atmospheric Air Concentrations)
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11 pages, 4938 KiB  
Article
The Imprint of the Southern Annular Mode on Black Carbon AOD in the Western Cape Province
by Chibuike Chiedozie Ibebuchi and Heiko Paeth
Atmosphere 2021, 12(10), 1287; https://doi.org/10.3390/atmos12101287 - 02 Oct 2021
Cited by 5 | Viewed by 1761
Abstract
This study examines the relationship between variations of the Southern Annular Mode (SAM) and black carbon (BC) at 550 nm aerosol optical depth (AOD) in the Western Cape province (WC). Variations of the positive (negative) phase of the SAM are found to be [...] Read more.
This study examines the relationship between variations of the Southern Annular Mode (SAM) and black carbon (BC) at 550 nm aerosol optical depth (AOD) in the Western Cape province (WC). Variations of the positive (negative) phase of the SAM are found to be related to regional circulation types (CTs) in southern Africa, associated with suppressed (enhanced) westerly wind over the WC through the southward (northward) migration of Southern Hemisphere mid-latitude cyclones. The CTs related to positive (negative) SAM anomalies induce stable (unstable) atmospheric conditions over the southwestern regions of the WC, especially during the austral winter and autumn seasons. Through the control of CTs, positive (negative) SAM phases tend to contribute to the build-up (dispersion and dilution) of BC in the study region because they imply dry (wet) conditions which favor the build-up (washing out) of pollutant particles in the atmosphere. Indeed, recent years with an above-average frequency of CTs related to positive (negative) SAM anomalies are associated with a high (low) BC AOD over southwesternmost Africa. Full article
(This article belongs to the Special Issue Mesoscale and Long-Range Circulations Driving Atmospheric Air Concentrations)
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