Rainfall acidity as related to the air mass trajectory: A study of the influence of time prior to precipitation

Journal of the Air & Waste Management Association

Parras

et al. 1998

Self Cite

In this study we have analyzed the sources of SO, SO, No, and NO in the air of four remote Spanish stations belonging to the European Monitoring and Evaluation Programme (EMEP) network. Information about trajectories has been used together with the conditional probability functions (CPFs). The most remarkable result is that the Mediterranean area is the main source of these pollutants in the air of the Spanish EMEP stations. Northern Africa and Central Europe are also important sources while the Atlantic Ocean and British Islands are, in general terms, low sources of these pollutants. The role of the Iberian Peninsula as a source of pollutants in one of the stations, Logrono, is analyzed with more details using smaller regions to define CPFs.

Section: Discussionmentioning

confidence: 99%

Section: Rúa Hernández Parras Martín and Gimenomentioning

confidence: 99%

Sources of SO₂, SO₄ ^2-, NO_x, and NO₃- in the Air of Four Spanish Remote Stations

Rua

Journal of the Air & Waste Management Association

Parras

et al. 1998

Self Cite

“…The main sources of pollutants for Spanish EMEP stations and the characteristics of acid wet deposition in Spain have also been documented. [12][13][14][15] All data were corrected for ocean influences according to the procedures of Keen and Galloway 16 to give more importance to its anthropogenic contribution than its natural one. Na + was used to represent sea salt in a method similar to that used by Bridgman.…”

Section: Discussionmentioning

confidence: 99%

Time Trends and Seasonal Variation of the Rainwater Chemical Composition in Spain

Gimeno

Sánchez

Journal of the Air & Waste Management Association

et al. 1997

“…In this study we used statistical tools and information about the trajectories by means of the CPF functions. A good summary of this technique is given by Gebhart and Malm [6] and examples of their use in Spain can be found for sources of wet deposition of majorions [16][17][18], for sources of SO 2 , NO X , SO^~ and NO 3 [3,19,20] and for study of the sources of surface ozone in Spain [21]. (Figure 1), six stations belonging to EMEP network.The EMEP stations have the following characteristics: They must be placed in rural areas, away from building areas.…”

Section: Introductionmentioning

confidence: 99%

Trend, seasonal variation and sources of suspended particulated matter (SPM) in Spain

Rua

Gimeno

Toxicological & Environmental Chemistry

1999

Self Cite

In this study we analyze the temporal evolution of the suspended particulated matter (SPM) in the air of the six Spanish remote stations belonging to the European Monitoring and Evaluation Programme network. A negative trend is observed in three of them and a positive trend in one. Another objective of this work was to know the geographical sources of SPM in Spain. To do this we used the conditional probability functions (cf. Ashbaugh et al. (1985), Atmos. Environ., 19, 1263Environ., 19, -1270 and information about air masses trajectories. The North of Africa and regions inside Spain are the main sources while Continental Europe and the British Islands are less important.