Chemical characterization of marine sub-micrometer aerosol particles during the MERIAN cruise MSM18/3 from the Cape Verde island Sao Vicente to Gabun (Atlantic Ocean)

Sub-micron marine aerosol particles (PM1) were collected during the MERIAN cruise MSM 18/3 between 22 June 2011 and 21 July 2011 from the Cape Verde island Sao Vicente to Gabun crossing the tropical Atlantic Ocean and passing equatorial upwelling areas. According to air mass origin and chemical composition of the aerosol particles, three main regimes could be established. Aerosol particles in the first part of the cruise were mainly of marine origin, in the second part was marine and slightly biomass burning influenced (increasing tendency) and in the in last part of the cruise, approaching the African mainland, biomass burning influences became dominant. Generally aerosols were dominated by sulfate (caverage = 1.99 µg/m**3) and ammonium ions (caverage = 0.72 µg/m**3) that are well correlated and slightly increasing along the cruise. High concentrations of water insoluble organic carbon (WISOC) averaging 0.51 µg/m**3 were found probably attributed to the high oceanic productivity in this region. Water soluble organic carbon (WSOC) was strongly increasing along the cruise from concentrations of 0.26 µg/m**3 in the mainly marine influenced part to concentrations up to 3.3 µg/m**3 that are probably caused by biomass burning influences. Major organic constituents were oxalic acid, methansulfonic acid (MSA) and aliphatic amines. MSA concentrations were quite constant along the cruise (caverage = 43 ng/m**3). While aliphatic amines were more abundant in the first mainly marine influenced part with concentrations of about 20 ng/m**3, oxalic acid showed the opposite pattern with average concentrations of 12 ng/m**3 in the marine and 158 ng/m**3 in the biomass burning influenced part. The alpha dicarbonyl compounds glyoxal and methylglyoxal were detected in the aerosol particles in the low ng/m**3 range and followed oxalic acid closely. MSA and aliphatic amines accounted for biogenic marine (secondary) aerosol constituents whereas oxalic acid and the alpha dicarbonyl compounds were believed to result mainly from biomass burning. N-alkane concentrations increased along the cruise from 0.81 to 4.66 ng/m**3, PAHs and hopanes were abundant in the last part of the cruise (caverage of PAHs = 0.13 ng/m**3, caverage of hopanes = 0.19 ng/m**3). Levoglucosan was identified in several samples of the last part of the cruise in concentrations around 2 ng/m**3, pointing to (aged) biomass burning influences. The investigated organic compounds could explain 9.5% of WSOC in the mainly marine influenced part (dominating compounds: aliphatic amines and MSA) and 2.7% of WSOC in the biomass burning influenced part (dominating compound: oxalic acid) of the cruise.

Clemente Sáenz Ridruejo, Ingeniero de Caminos : [Homenaje]

Próximo a cumplirse el primer aniversario del fallecimiento de Clemente Saénz Ridruejo, el pasado 14 de febrero de 2007 se celebró en la sede de la Real Academia de Bellas Artes un emotivo homenaje a quien había sido maestro de ingenieros a lo largo de una vida en la que la práctica profesional, intensamente ejercida había sido complementada con singular brillantez por otras actividades que hicieron de Clemente un personaje excepcional.

Demostración del sentido verdadero de las autoridades de que se vale el Doctor Don Juan Antonio de Llorente, canónigo de la Catedral de Toledo, en el tomo I de "Las noticias históricas de las tres provincias vascongadas" : y de lo que en verdad resulta de los historiadores que cita, con respecto solamente al Muy Noble y Muy Leal Señorío de Vizcaya / por Francisco de Aranguren y Sobrado.

Digitalización Vitoria-Gasteiz Archivos y Bibliotecas Abril 1994 18-6

Oro y oropel / por Vicente de Arana.

Digitalización Vitoria-Gasteiz Fundación Sancho el Sabio 2008

Los últimos íberos : leyendas de Euskaria / por Vicente de Arana.

Digitalización Vitoria-Gasteiz Fundación Sancho el Sabio 2008

Guizadiaren eta batez ere ichaz-guizonen izar eder eta laguntza benetakoa dan Ama Virjiña Iziar-coaren condaraichoa : bere bederatziurren eta canta batzuequin / [Pedro José Aldazabal-ec eskribitu] ; Vicente Aizpuruc laburtu eta zucendu ; eta Francisco Maria Gorosteguic euskarara itzulia.

El nombre del autor está sacado del texto

Leyendas del norte / por Vicente de Arana.

Digitalización Vitoria-Gasteiz Fundación Sancho el Sabio 2008