A Multiyear Record of Rainfall and Ionic Composition along an Elevation Gradient in Northeastern Puerto Rico

  • Authors: Torres-Delgado, Elvis; González, Grizelle; Medina, Ernesto; Rivera, María M.
  • Publication Year: 2021
  • Publication Series: Scientific Journal (JRNL)
  • Source: Aerosol and Air Quality Research
  • DOI: 10.4209/aaqr.200582

Abstract

This study analyzes multiyear data recorded by 21 stations along an elevation gradient (0–
1045 m a.s.l.) in the Luquillo Mountains on the rainfall and the rainwater chemistry. The total
ionic concentration and the rainwater volume exhibited an inverse exponential relationship, with
the correlation coefficients ranging from –0.66 to –0.90. Furthermore, the rainfall tended to
increase with the elevation, although a few stations, owing to their geographical location and their
exposure to the prevailing winds, departed from this trend. The ionic composition also displayed
clear seasonality: Contributions from African crustal aerosols and, to a lesser degree, North
American anthropogenic aerosols were observed during summer and winter, respectively,
whereas marine aerosols were influential year-round. Finally, the annual loads (kg ha–1 y–1) first
increased for all of the species, except PO43– and K+, from the lowland to the cloud formation levels
(by 47–121%) and then decreased for all of them, except PO43– and NO3–, at the altitudes above.

  • Citation: Torres-Delgado, Elvis; González, Grizelle; Medina, Ernesto; Rivera, María M. 2021. A Multiyear Record of Rainfall and Ionic Composition along an Elevation Gradient in Northeastern Puerto Rico. Aerosol and Air Quality Research. 21(6): 200582-. https://doi.org/10.4209/aaqr.200582.
  • Keywords: Precipitation chemistry, Luquillo Experimental Forest, Rainforest hydrology, Tropical forest, Nutrient deposition
  • Posted Date: June 5, 2021
  • Modified Date: June 10, 2021
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    Publication Notes

    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
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