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

Xiang, Y.; Quay, P. D.; Sonnerup, R. E.; Fassbender, A. J.

doi:10.1029/2023GL103213

i

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

Supporting Files

2023
By Xiang, Y. ; Quay, P. D. ; Sonnerup, R. E. ; ...
Series: PMEL Contribution no. 5464

Details

Journal Title:

Geophysical Research Letters
Personal Author:

Xiang, Y. ; Quay, P. D. ; Sonnerup, R. E. ; Fassbender, A. J.
NOAA Program & Office:

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

Nitrogen Phosphorus Water—Organic Compound Content Zooplankton Water—Organic Compound Content Bermuda Atlantic Time-series Study (BATS) Dissolved Organic Matter Subtropical Gyres Upper Ocean
Source:

Geophysical Research Letters, 50, e2023GL103213
Series:

PMEL Contribution no. 5464
DOI:

https://doi.org/10.1029/2023GL103213
Format:

PDF
Document Type:

Journal Article
Funding:

Grant no. NA20OAR4320271
License:

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

CC BY
Compliance:

Submitted
Main Document Checksum:

urn:sha-512:db4423fbd7d448839ba5f6a11d6f8a01ea18eb29d195072ff02d337135fda27c890732f692d45dac368242122f1b5a5489e5b407004277f2446f8b21a08fd060
Download URL:

https://repository.library.noaa.gov/view/noaa/56417/noaa_56417_DS1.pdf
File Type:

[PDF - 523.69 KB ]

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