Next Article in Journal
Analysis of a Case of Supercellular Convection over Bulgaria: Observations and Numerical Simulations
Next Article in Special Issue
Air/Surface Exchange of Gaseous Elemental Mercury at Different Landscapes in Mississippi, USA
Previous Article in Journal
Towards Unifying the Planetary Boundary Layer and Shallow Convection in CAM5 with the Eddy-Diffusivity/Mass-Flux Approach
Previous Article in Special Issue
Ambient Mercury Observations near a Coal-Fired Power Plant in a Western U.S. Urban Area
Open AccessArticle

Fluxes of Gaseous Elemental Mercury on a Mediterranean Coastal Grassland

Laboratory of Atmospheric Pollution and of Control Engineering of Atmospheric Pollutants, Faculty of Engineering, Department of Environmental Engineering, Democritus University of Thrace, 67100 Xanthi, Greece
*
Author to whom correspondence should be addressed.
Atmosphere 2019, 10(9), 485; https://doi.org/10.3390/atmos10090485
Received: 2 August 2019 / Revised: 18 August 2019 / Accepted: 20 August 2019 / Published: 22 August 2019
(This article belongs to the Special Issue Atmospheric Mercury: Sources, Sinks, and Transformations)
Coastal rural areas can be a source of elemental mercury, but the potential influence of their topographic and climatic particularities on gaseous elemental mercury (GEM) fluxes have not been investigated extensively. In this study, gaseous elemental mercury was measured over Mediterranean coastal grassland located in Northern Greece from 2014 to 2015 and GEM fluxes were evaluated utilizing Monin–Obukhov similarity theory. The GEM fluxes ranged from –50.30 to 109.69 ng m−2 h−1 with a mean value equal to 10.50 ± 19.14 ng m−2 h−1. Concerning the peak events, with high positive and low negative GEM fluxes, those were recorded from the morning until the evening. Rain events were a strong contributing factor for enhanced GEM fluxes. The enhanced turbulent mixing under daytime unstable conditions led to greater evasion and positive GEM fluxes, while, during nighttime periods, the GEM evasion is lower, indicating the effect of atmospheric stability on GEM fluxes. The coastal grassland with its specific characteristics influences the GEM fluxes and this area could be characterized as a source of elemental mercury. This study is one of the rare efforts in the research community to estimate GEM fluxes in a coastal natural site based on aerodynamic gradient method. View Full-Text
Keywords: GEM fluxes; gaseous elemental mercury; coastal area; Aegean Sea; Mediterranean Basin; aerodynamic gradient method; Monin–Obukhov similarity theory GEM fluxes; gaseous elemental mercury; coastal area; Aegean Sea; Mediterranean Basin; aerodynamic gradient method; Monin–Obukhov similarity theory
Show Figures

Figure 1

MDPI and ACS Style

Polyzou, C.; Loupa, G.; Trepekli, A.; Rapsomanikis, S. Fluxes of Gaseous Elemental Mercury on a Mediterranean Coastal Grassland. Atmosphere 2019, 10, 485.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop