Subtropical Gyre Nutrient Cycling in the Upper Ocean: Insights From a Nutrient‐Ratio Budget Method

Xiang, Yang; Quay, Paul D.; Sonnerup, Rolf E.; Fassbender, Andrea J.

doi:10.1029/2023gl103213

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Subtropical Gyre Nutrient Cycling in the Upper Ocean: Insights From a Nutrient‐Ratio Budget Method

2023
By Xiang, Yang ; Quay, Paul D. ; Sonnerup, Rolf E. ; ...
Source: Geophysical Research Letters, 50(13)

[PDF-602.42 KB]

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Details:

Journal Title:

Geophysical Research Letters
Personal Author:

Xiang, Yang ; Quay, Paul D. ; Sonnerup, Rolf E. ; Fassbender, Andrea J.

Xiang, Yang ; Quay, Paul D. ; Sonnerup, Rolf E. ; Fassbender, Andrea J. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; CICOES (Cooperative Institute for Climate, Ocean and Ecosystem Studies) ; PMEL (Pacific Marine Environmental Laboratory)

OAR (Oceanic and Atmospheric Research) ; CICOES (Cooperative Institute for Climate, Ocean and Ecosystem Studies) ; PMEL (Pacific Marine Environmental Laboratory) Less -
Description:

We use a nutrient‐ratio budget method to investigate the relative importance of different nutrient source and sink terms at time‐series Station ALOHA and Bermuda Atlantic Time‐series Study (BATS) in the North Pacific and North Atlantic subtropical gyres, respectively. At mean state conditions over annual and multi‐year time scales, vertical phosphate () supply from the subsurface accounts for ∼60% of the total phosphorus supply at both sites. Dissolved organic matter transport and zooplankton excretion are more important phosphorous export pathways than sinking particles at Station ALOHA and BATS. The nutrient‐ratio budget approach provides quantitative, observation‐based constraints on nutrient sources and sinks in the surface ocean, which helps improve our understanding of the biological carbon pump in oligotrophic oceans.
Keywords:

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General Earth And Planetary Sciences Geophysics
Source:

Geophysical Research Letters, 50(13)
DOI:

https://doi.org/10.1029/2023gl103213
ISSN:

0094-8276;1944-8007;
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Funding:

Grant no. NA20OAR4320271
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
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Library
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urn:sha256:66b1875226f80b2bdda471ba1cb54f2d90f0eec60da442e4e73dbf8ef8b1d61d
Download URL:

https://repository.library.noaa.gov/view/noaa/58433/noaa_58433_DS1.pdf
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