The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners.
As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
i
Drivers of Phytoplankton Blooms in Hawaii: A Regional Model Study
-
2021
-
-
Source: Journal of Geophysical Research: Oceans, 126(5)
[PDF-7.45 MB]
Details:
-
Journal Title:Journal of Geophysical Research: Oceans
-
Personal Author:
-
NOAA Program & Office:
-
Description:The region around the main Hawaiian Islands (MHI) is characterized by a permanent
thermocline, and numerous processes have been proposed to facilitate phytoplankton blooms in this
oligotrophic province. Here, we use a coupled physical-biogeochemical model of the MHI to elucidate
some of the different dynamics behind phytoplankton blooms. The model permits submesoscale processes
and is integrated for the years 2010–2017 embedded in a physical state-estimate reanalysis using nearly 50
million observations. Model results exhibit good agreement between simulated values and observations
at Station ALOHA for physical and biogeochemical parameters. The overall levels and the amplitude
of the seasonal cycles are well captured for many variables. We show that variations in net primary
production are mainly driven by domain-wide seasonal cycles of light and nitrogen fixers, respectively,
as well as short-lived, stochastic bloom events resulting from the formation of eddies to the west of the
island of Hawaii. Furthermore, sporadic wind- and current-driven upwelling is resulting in ephemeral
enhancements of nearshore phytoplankton blooms mainly on the northeastern side of the islands
-
Keywords:
-
Source:Journal of Geophysical Research: Oceans, 126(5)
-
DOI:
-
Document Type:
-
Funding:
-
Rights Information:Other
-
Compliance:Submitted
-
Main Document Checksum:
-
Download URL:
-
File Type:
