Meteorology and photochemical air pollution in Southern Europe: Experimental results from EC research projects

Millán, M.; Salvador, R.; Mantilla, Enrique; Artnano, B.

doi:10.1016/1352-2310(95)00220-0

Cited by 199 publications

(107 citation statements)

References 8 publications

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“…Consequently, there is interest in understanding which environmental factors affect terpene emissions from plants. This especially concerns Mediterranean regions, as such emissions are directly implicated in O 3 concentration even on a local scale (Simon et al, 2005), and this secondary pollutant exceeds the European tolerated limits several times per year (Millan et al, 1996). Although the scientific community has devoted considerable effort to understand the effect of environmental factors on BVOC in the Mediterranean Region, estimates of these compounds are still uncertain (Staudt et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Effect of Intraspecific Competition and Substrate Type on Terpene Emissions from Some Mediterranean Plant Species

et al. 2006

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Competition is an important factor that has been extensively reported in the Mediterranean area. There is evidence that leaf terpene accumulation may vary between plants growing on calcareous and siliceous soils. In the present study, leaf terpene emissions from potted seedlings of Pinus halepensis, Cistus albidus, and Quercus coccifera, growing under natural environmental conditions on calcareous and siliceous substrates, were studied by using a bag enclosure method. In both substrates, seedlings were potted alone and in intraspecific competition, to examine the effect of substrate type and that of intraspecific competition on terpene emissions. The results showed that competition favored: (i) overall monoterpene and sesquiterpene emissions from Q. coccifera; (ii) overall monoterpene emissions from P. halepensis; (iii) overall sesquiterpene emissions from C. albidus. Substrate type affected terpene emissions to a limited extent and in a species-specific way. Whereas for Q. coccifera, the overall monoterpene emissions and that of Allo-aromadendrene were favored on siliceous substrate, no significant changes were found in emissions from P. halepensis. Only the release of AR-curcumene from C. albidus was higher on siliceous substrate. We also found high variability in terpene emission composition from the study species, particularly for P. halepensis and Q. coccifera. These two species released both monoterpenes and sesquiterpenes, instead of monoterpenes only, as shown in previous studies.

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Section: Introductionmentioning

confidence: 99%

Effect of Intraspecific Competition and Substrate Type on Terpene Emissions from Some Mediterranean Plant Species

et al. 2006

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“…Millán et al (1997) found distinctive mesoscale circulations in this region which are important for pollutant transports. Sea breeze circulations are in particular interesting for understanding the transport of photochemically created ozone (Millán et al, 1996) but are also important for wildfire security (Millán et al, 1998). Cantos and Azorín-Molina (2004) point out the importance of the sea breeze for summer precipitations and limiting maximum temperatures.…”

Section: Introductionmentioning

confidence: 99%

Characterization of typical coastal circulations with high‐resolution measurements in the Gulf of Valencia

Fock

Schlünzen

2011

Intl Journal of Climatology

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ABSTRACT:Measurements from 27 stations taken in the coastal area of the Gulf of Valencia are utilized to characterize the typical coastal circulation systems observed in this area. The wind measurements are available in a resolution of 15 s at daytime and 5 min at nighttime and cover the period of May 2006-April 2007. The analysis of median daily cycles shows that the meteorological situation in the Gulf of Valencia is dominated by a distinguished sea breeze. The observed development of local circulation systems varies within a distance of just a few kilometres, not only over land but also over water. These variations can be explained by the local influences of a pronounced coastal orography, land use and shape of the coastline. The measurements are classified in days with and days without pronounced sea breeze effects. This classification allows a refined discussion on spatial and temporal characteristics of the observed circulation systems. The classification shows an occurrence of sea breezes at 2 out of 3 days.

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“…Many air quality studies conducted in Mediterranean areas have shown how these regions are often characterized by elevated levels of ozone during the summer due to the high solar radiation, the presence of large emissions, large areas of vegetation, and meteorological processes ranging from the mesoscale to local circulations (Millan et al, 1996;Ziomas et al, 1998;Svensson, 1998;Millan et al, 2000;Alonso et al, 2000;Jimènez et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

A numerical study of the effect of sea breeze circulation on photochemical pollution over a highly industrialized peninsula

Mangia

Schipa

Tanzarella

et al. 2009

Meteorological Applications

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Numerical simulations compared with measurements are used to investigate the effect of sea breeze circulation on the ozone accumulation over a highly industrialized peninsula in southern Italy, where high levels of ozone concentration are often registered. A frequent meteorological phenomenon in this region during weak summer synoptic conditions is the development of complex sea breeze systems from the coastlines, with convergence areas within the peninsula. A case study characterized by strong winds alternating with sea breeze circulations was selected. The simulations show that during weak synoptic conditions, sea breezes transport ozone and its precursors over land from the sea, as well as from the coastlines where the largest industrialized districts are localized. The overlapping breezes lead to ozone accumulation in the area where sea breeze convergence occurs. This may explain the high values of ozone registered close to the sea breeze convergence lines. The comparison between predictions and experimental data indicates that the numerical system successfully reproduces both weather and ground level ozone concentration in different meteorological conditions, resulting in a fundamental tool for both scientific comprehension of the evolution of air contaminants and interpretation of the monitoring data.

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Meteorology and photochemical air pollution in Southern Europe: Experimental results from EC research projects

Cited by 199 publications

References 8 publications

Effect of Intraspecific Competition and Substrate Type on Terpene Emissions from Some Mediterranean Plant Species

Effect of Intraspecific Competition and Substrate Type on Terpene Emissions from Some Mediterranean Plant Species

Characterization of typical coastal circulations with high‐resolution measurements in the Gulf of Valencia

A numerical study of the effect of sea breeze circulation on photochemical pollution over a highly industrialized peninsula

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