Ocean Temperature and Color Frontal Zones in the Gulf of Mexico: Where, When, and Why

Zhang, Yingjun; Hu, Chuanmin

doi:10.1029/2021jc017544

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Ocean Temperature and Color Frontal Zones in the Gulf of Mexico: Where, When, and Why

2021
By Zhang, Yingjun ; Hu, Chuanmin
Source: Journal of Geophysical Research: Oceans, 126(10)

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Journal Title:

Journal of Geophysical Research: Oceans
Personal Author:

Zhang, Yingjun ; Hu, Chuanmin

Zhang, Yingjun ; Hu, Chuanmin Less -
NOAA Program & Office:

NOS (National Ocean Service) ; NCCOS (National Centers for Coastal Ocean Science)

NOS (National Ocean Service) ; NCCOS (National Centers for Coastal Ocean Science) Less -
Description:

The spatial and temporal patterns of ocean frontal zones in the Gulf of Mexico (GoM) are studied using ocean color and sea surface temperature (SST) imagery collected by the Moderate Resolution Imaging Spectroradiometer/Aqua (MODIS/A) over an 18-year (2002–2019) period. A gradient-based front detection algorithm is applied to each daily image to detect frontal features, from which a comprehensive data set of ocean frontal zones (both climatology and time series) is established. Prominent seasonality is found in both ocean color and SST frontal zones while their seasonal variations differ. Major persistent frontal zones are mainly distributed in coastal waters within the 130-m isobath, and they are often associated with wind forcing, wind-driven Ekman transport, upwelling/downwelling, river discharge, ocean currents, and topography. The seasonal and interannual variations in frontal distributions are also revealed in the dominant spatial and temporal modes derived from an empirical orthogonal function (EOF) decomposition analysis. These findings may have significant implications on fisheries and ocean ecology research. For example, both ocean color and SST frontal features in certain months are found to coincide with a well-known fishing ground in the eastern GoM, and surface macroalgae features are found to align well with the identified ocean frontal features.
Keywords:

[+]

Ocean temperature RESTORE Program
Source:

Journal of Geophysical Research: Oceans, 126(10)
DOI:

https://doi.org/10.1029/2021jc017544
ISSN:

2169-9275;2169-9291;
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Funding:

Grant no. NA17NOS4510099
Place as Subject:

Mexico, Gulf of
Rights Information:

Other
Compliance:

CHORUS
Main Document Checksum:

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urn:sha256:a96b4fdf3d8d06f1474a281326b45c19a97f6330e339fa1f93a909c5d527b8d4
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/view/noaa/49921/noaa_49921_DS1.pdf
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Ocean Temperature and Color Frontal Zones in the Gulf of Mexico: Where, When, and Why

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