Depth-Resolved Net Primary Production in the Northeast Pacific Ocean: A Comparison of Satellite and Profiling Float Estimates in the Context of Two Marine Heatwaves

Long, J. S.; Fassbender, A. J.; Estapa, M. L.

doi:10.1029/2021GL093462

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Depth-Resolved Net Primary Production in the Northeast Pacific Ocean: A Comparison of Satellite and Profiling Float Estimates in the Context of Two Marine Heatwaves

2021
By Long, J. S. ; Fassbender, A. J. ; Estapa, M. L.
Source: Geophysical Research Letters, 48(19)

[PDF-2.92 MB]

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Journal Title:

Geophysical Research Letters
Personal Author:

Long, J. S. ; Fassbender, A. J. ; Estapa, M. L.

Long, J. S. ; Fassbender, A. J. ; Estapa, M. L. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; PMEL (Pacific Marine Environmental Laboratory)

OAR (Oceanic and Atmospheric Research) ; PMEL (Pacific Marine Environmental Laboratory) Less -
Description:

Methods commonly used to estimate net primary production (NPP) from satellite observations are now being applied to biogeochemical (BGC) profiling float observations. Insights can be gained from regional differences in float and satellite NPP estimates that reveal gaps in our understanding and guide future NPP model development. We use 7 years of BGC profiling float data from the Northeast Pacific Ocean to quantify discrepancies between float and satellite NPP estimates and decompose them into contributions associated with the platform sensing method and depth resolution of observations. We find small, systematic seasonal discrepancies in the depth-integrated NPP (iNPP) but much larger (>±100%) discrepancies in depth-resolved NPP. Annual iNPP estimates from the two platforms are significantly, positively correlated, suggesting that they similarly track interannual variability in the study region. Using the long-term satellite iNPP record, we identify elevated annual iNPP during two recent marine heatwaves and gain insights about ecosystem functionality.
Source:

Geophysical Research Letters, 48(19)
DOI:

https://doi.org/10.1029/2021GL093462
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Journal Article
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CC BY
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Submitted
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urn:sha256:ea2c5db42e20c4c0a5128ab2c7d3588d28d6cfb31716cd74474498910ce443af
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Depth-Resolved Net Primary Production in the Northeast Pacific Ocean: A Comparison of Satellite and Profiling Float Estimates in the Context of Two Marine Heatwaves

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