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Do Cloud Properties in a Puerto Rican Tropical Montane Cloud Forest Depend on Occurrence of Long-Range Transported African Dust?

Spiegel, Johanna ; Buchmann, Nina ; Mayol-Bracero, Olga ; Cuadra-Rodriguez, Luis ; Valle Díaz, Carlos ; Prather, Kimberly ; Mertes, Stephan ; Eugster, Werner

In: Pure and Applied Geophysics, 2014, vol. 171, no. 9, p. 2443-2459

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    Titre
    • Do Cloud Properties in a Puerto Rican Tropical Montane Cloud Forest Depend on Occurrence of Long-Range Transported African Dust?
    Auteur
    • Spiegel, Johanna. Institute of Agricultural Sciences, ETH Zürich, Zurich, Switzerland
    • Buchmann, Nina. Institute of Agricultural Sciences, ETH Zürich, Zurich, Switzerland
    • Mayol-Bracero, Olga. Institute for Tropical Ecosystem Studies, University of Puerto Rico, San Juan, Puerto Rico
    • Cuadra-Rodriguez, Luis. Department of Chemistry, University of California, San Diego, 92093, La Jolla, CA, USA
    • Valle Díaz, Carlos. Institute for Tropical Ecosystem Studies, University of Puerto Rico, San Juan, Puerto Rico
    • Prather, Kimberly. Department of Chemistry and Biochemistry and Scripps Institution of Oceanography, University of California, San Diego, 92093, La Jolla, CA, USA
    • Mertes, Stephan. Leibniz Institute for Tropospheric Research, Leipzig, Germany
    • Eugster, Werner. Institute of Agricultural Sciences, ETH Zürich, Zurich, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Pure and Applied Geophysics, 2014, vol. 171, no. 9, p. 2443-2459. Springer Basel
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:326531
    Summary
    We investigated cloud properties of warm clouds in a tropical montane cloud forest at Pico del Este (1,051m a.s.l.) in the northeastern part of Puerto Rico to address the question of whether cloud properties in the Caribbean could potentially be affected by African dust transported across the Atlantic Ocean. We analyzed data collected during 12 days in July 2011. Cloud droplet size spectra were measured using the FM-100 fog droplet spectrometer that measured droplet size distributions in the range from 2 to 49µm, primarily during fog events. The droplet size spectra revealed a bimodal structure, with the first peak (D<6µm) being more pronounced in terms of droplet number concentrations, whereas the second peak (10µm