Atmospheric Transport of North African Dust‐Bearing Supermicron Freshwater Diatoms to South America: Implications for Iron Transport to the Equatorial North Atlantic Ocean

Details

• Journal Title:
  Geophysical Research Letters
• Personal Author:
  Barkley, Anne E. ; Olson, Nicole E. ; Prospero, Joseph M. ; Gatineau, Alexandre ; Panechou, Kathy ; Maynard, Nancy G. ; Blackwelder, Patricia ; China, Swarup ; Ault, Andrew P. ; Gaston, Cassandra J.
• NOAA Program & Office:
  CIMAS (Cooperative Institute for Marine and Atmospheric Studies)
• Description:
  The equatorial North Atlantic Ocean (NAO) is a nutrient-limited ecosystem that relies on the deposition of long-range transported iron (Fe)-containing aerosols to stimulate primary productivity. Using microscopy, we characterized supermicron and supercoarse mode African aerosols transported to the western NAO in boreal winter/spring. We detected three particle types including African dust, primary biological aerosol particles, and freshwater diatoms (FDs). FDs contained 4% Fe by weight due to surficial dust inclusions that may be susceptible to chemical processing and dissolution. FDs were typically larger than dust particles and comprised 38% of particles between 10 and 18 μm in diameter. The low density,
• Keywords:
  General Earth And Planetary Sciences Geophysics General Earth And Planetary Sciences General Earth And Planetary Sciences
• Source:
  Geophysical Research Letters, 48(5)
• DOI:
  https://doi.org/10.1029/2020gl090476
• ISSN:
  0094-8276 ; 1944-8007
• Format:
  PDF
• Publisher:
  American Geophysical Union (AGU)
• Document Type:
  Journal Article
• Rights Information:
  Other
• Compliance:
  Library
• Main Document Checksum:
  urn:sha256:15f51d97ba82382b370e2c38c34ffdcf55c7a5a8586a4a15c155ab9451b8f42a
• Download URL:
  https://repository.library.noaa.gov/view/noaa/52549/noaa_52549_DS1.pdf
• File Type:
  [PDF - 4.12 MB ]