Acidic and alkaline precipitation in the Cilician Basin, north-eastern Mediterranean Sea

Özsoy, Türkan; Saydam, A.C.

doi:10.1016/s0048-9697(00)00380-6

Cited by 32 publications

(8 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous studies have applied backward trajectory models to investigate Asian and African dust storms. 30,40,41 The results of the study presented here illustrate that during the first intensive sampling period sea breezes blown in the early morning transported the offshore PM 10 back to the inland sites in the Kaohsiung metropolitan area, resulting in a higher PM 10 concentration at these inland sites in the afternoon. In contrast, the high PM 10 concentration observed during the second intensive sampling period was brought to the Kaohsiung metropolitan area mainly by a northerly wind that transported PM 10 in this period were dominated by the northeastern monsoon and as such likely inhibited the influences of SLBs.…”

Section: Effects Of Slbsmentioning

confidence: 70%

Influence of Sea-Land Breezes on the Tempospatial Distribution of Atmospheric Aerosols over Coastal Region

Tsai

Yuan

Hung

et al. 2011

Journal of the Air & Waste Management Association

View full text Add to dashboard Cite

The influence of sea-land breezes (SLBs) on the spatial distribution and temporal variation of particulate matter (PM) in the atmosphere was investigated over coastal Taiwan. PM was simultaneously sampled at inland and offshore locations during three intensive sampling periods. The intensive PM sampling protocol was continuously conducted over a 48-hr period. During this time, PM 2.5 and PM 2.5-10 (PM with aerodynamic diameters Յ2.5 m and between 2.5 and 10 m, respectively) were simultaneously measured with dichotomous samplers at four sites (two inland and two offshore sites) and PM 10 (PM with aerodynamic diameters Յ10 m) was measured with ␤-ray monitors at these same 4 sites and at 10 sites of the Taiwan Air Quality Monitoring Network. PM sampling on a mobile air quality monitoring boat was further conducted along the coastline to collect offshore PM using a ␤-ray monitor and a dichotomous sampler. Data obtained from the inland sites (n ϭ 12) and offshore sites (n ϭ 2) were applied to plot the PM 10 concentration contour using Surfer software. This study also used a three-dimensional meteorological model (Pennsylvania State University/National Center for Atmospheric Research Meteorological Model 5) and the Comprehensive Air Quality Model with Extensions to simulate surface wind fields and spatial distribution of PM 10 over the coastal region during the intensive sampling periods. Spatial distribution of PM 10 concentration was further used in investigating the influence of SLBs on the transport of PM 10 over the coastal region. Field measurement and model simulation results showed that PM 10 was transported back and forth across the coastline. In particular, a high PM 10 concentration was observed at the inland sites during the day because of sea breezes, whereas a high PM 10 concentration was detected offshore at night because of land breezes. This study revealed that the accumulation of PM in the near-ocean region because of SLBs influenced the tempospatial distribution of PM 10 over the coastal region.

show abstract

Section: Effects Of Slbsmentioning

confidence: 70%

Influence of Sea-Land Breezes on the Tempospatial Distribution of Atmospheric Aerosols over Coastal Region

Tsai

Yuan

Hung

et al. 2011

Journal of the Air & Waste Management Association

View full text Add to dashboard Cite

show abstract

“…The local or sporadic desert-derived dust is calcareous and contains large fractions of calcite. Neutralization of acidity by dust CaCO 3 and consequent changes in pH of precipitation has been reported elsewhere (Loye-Pilot et al 1986;Al-Momani et al 1995a;Özsoy and Saydam 2000).…”

Section: General Characteristics Of the Study Areamentioning

confidence: 74%

Precipitation Chemistry as an Indicator of Urban Air Quality in Mersin, North-Eastern Mediterranean Region

Ozsoy

Türker

Örnektekin

2007

Water Air Soil Pollut

Self Cite

View full text Add to dashboard Cite

The chemical composition of precipitation in the city of Mersin on the Mediterranean coast of Turkey has been studied. Spatial and temporal variability of rainwater constituents have been determined from samples collected at two central and two suburban stations for the December 2003-May 2005 period. A total of 246 samples covering all precipitation events were analyzed to determine pH, conductivity, as well as major anion (Cl − , NO À 3 , SO 2À 4 ); major cation (H + , Na + , K + , Ca 2+ , Mg 2+ , NH þ 4 ) and formaldehyde (HCHO) concentrations. The pH varied within a range of 4.8-8.5, with only 8 out of 246 samples being acidic (pH<5.6), and the remaining highly alkaline samples being neutralized by either NH þ 4 in rainwater, or by CaCO 3 resulting from wet deposition of atmospheric dust. The volume weighted mean ΣAnion/ΣCation ratio was 0.49. The equivalent concentration of major ionic species followed the order:Formaldehyde concentrations varied in the range of 0.01-17.9 μM, and was found to be dependent on precipitation volume. Relatively higher NH þ 4 , SO 2À 4 , NO À 3 and HCHO concentrations, mainly of anthropogenic origin, measured near the city center suggest increased pollution from local anthropogenic sources, e.g., residential heating, industrial and/or traffic emissions. In general, the results of this study suggest local precipitation chemistry is more strongly influenced by natural (mineral dust and marine) sources compared to anthropogenic ones.

show abstract

“…Thus, we can assume that acid pH in clouds decreases P. syringae deposition. However alkaline pH and relatively higher electrical conductivities are indicators of minerals in the atmosphere and notably of dusts (aluminum and calcite) (Delmas et al, 1996;Lee et al, 2000;Ozsoy and Saydam, 2000). The presence of dusts associated with microorganisms has been reported in clouds, air and precipitation, where dust has a protective role against the extreme conditions in the atmosphere (e.g., ultraviolet, desiccation) (Griffin et al, 2002;Harrison et al, 2005;Prospero et al, 2005;Kellogg and Griffin, 2006;Maki et al, 2008;Hara and Zhang, 2012).…”

Section: Discussionmentioning

confidence: 99%

Features of air masses associated with the deposition of Pseudomonas syringae and Botrytis cinerea by rain and snowfall

Monteil¹,

Bardin²,

Morris³

2014

The ISME Journal

View full text Add to dashboard Cite

Clarifying the role of precipitation in microbial dissemination is essential for elucidating the processes involved in disease emergence and spread. The ecology of Pseudomonas syringae and its presence throughout the water cycle makes it an excellent model to address this issue. In this study, 90 samples of freshly fallen rain and snow collected from 2005-2011 in France were analyzed for microbiological composition. The conditions favorable for dissemination of P. syringae by this precipitation were investigated by (i) estimating the physical properties and backward trajectories of the air masses associated with each precipitation event and by (ii) characterizing precipitation chemistry, and genetic and phenotypic structures of populations. A parallel study with the fungus Botrytis cinerea was also performed for comparison. Results showed that (i) the relationship of P. syringae to precipitation as a dissemination vector is not the same for snowfall and rainfall, whereas it is the same for B. cinerea and (ii) the occurrence of P. syringae in precipitation can be linked to electrical conductivity and pH of water, the trajectory of the air mass associated with the precipitation and certain physical conditions of the air mass (i.e. temperature, solar radiation exposure, distance traveled), whereas these predictions are different for B. cinerea. These results are pertinent to understanding microbial survival, emission sources and atmospheric processes and how they influence microbial dissemination.

show abstract

Acidic and alkaline precipitation in the Cilician Basin, north-eastern Mediterranean Sea

Cited by 32 publications

References 26 publications

Influence of Sea-Land Breezes on the Tempospatial Distribution of Atmospheric Aerosols over Coastal Region

Influence of Sea-Land Breezes on the Tempospatial Distribution of Atmospheric Aerosols over Coastal Region

Precipitation Chemistry as an Indicator of Urban Air Quality in Mersin, North-Eastern Mediterranean Region

Features of air masses associated with the deposition of Pseudomonas syringae and Botrytis cinerea by rain and snowfall

Contact Info

Product

Resources

About