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Madden-Julian Oscillation Enhances Phytoplankton Biomass in the Maritime Continent.

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  • معلومة اضافية
    • المصدر:
      Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: MEDLINE
    • بيانات النشر:
      Original Publication: London : Nature Publishing Group, copyright 2011-
    • الموضوع:
      Biomass* ; Rain* ; Tropical Climate*; Phytoplankton/*metabolism; Asia, Southeastern ; Chlorophyll A/metabolism ; Food Chain ; Geography ; Global Warming ; Indian Ocean ; Oceans and Seas ; Pacific Ocean ; Phytoplankton/growth & development ; Seasons ; Seawater ; Temperature
    • نبذة مختصرة :
      In addition to monsoon-driven rainfall, the Maritime Continent (MC) is subject to heavy precipitation caused by the Madden-Julian Oscillation (MJO), a tropical convection-coupled circulation that propagates eastward from the Indian to the Pacific Ocean. This study shows that riverine runoff from MJO-driven rainfall in the western MC significantly enhances phytoplankton biomass not only in the coastal regions but as far as the nutrient-poor Banda Sea, located 1,000 km downstream of the riverine source. We present observational estimates of the chlorophyll-a concentration in the Banda Sea increasing by 20% over the winter average within an MJO life cycle. The enhancement of phytoplankton in the central Banda Sea is attributed to two coinciding MJO-triggered mechanisms: enhanced sediment loading and eastward advection of waters with high sediment and chlorophyll concentrations. Our results highlight an unexpected effect of MJO-driven rainfall on the downstream oceanic region. This finding has significant implications for the marine food chain and biogeochemical processes in the MC, given the increasing deforestation rate and projections that global warming will intensify both the frequency and strength of MJO-driven rainfall in the MC.
    • References:
      Science. 2002 Aug 9;297(5583):999-1002. (PMID: 12169731)
      Science. 2007 Dec 14;318(5857):1765-9. (PMID: 18079400)
    • الرقم المعرف:
      YF5Q9EJC8Y (Chlorophyll A)
    • الموضوع:
      Date Created: 20190402 Date Completed: 20201005 Latest Revision: 20210109
    • الموضوع:
      20231215
    • الرقم المعرف:
      PMC6443672
    • الرقم المعرف:
      10.1038/s41598-019-41889-5
    • الرقم المعرف:
      30931981