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Satellite-based detection and monitoring of phytoplankton blooms along the Oregon coast

Citation

McKibben, SM and Strutton, PG and Foley, DG and Peterson, TD and White, AE, Satellite-based detection and monitoring of phytoplankton blooms along the Oregon coast, Journal of Geophysical Research C: Oceans, 117, (12) Article C12002. ISSN 0148-0227 (2012) [Refereed Article]

Copyright Statement

Copyright 2012 American Geophysical Union

DOI: doi:10.1029/2012JC008114

Abstract

We have applied a normalized difference algorithm to 8 day composite chlorophyll-a (CHL) and fluorescence line height (FLH) imagery obtained from the Moderate Resolution Imaging Spectroradiometer aboard the Aqua spacecraft in order to detect and monitor phytoplankton blooms in the Oregon coastal region. The resulting bloom products, termed CHLrel and FLHrel, respectively, describe the onset and advection of algal blooms as a function of the percent relative change observed in standard 8 day CHL or FLH imagery over time. Bloom product performance was optimized to consider local time scales of biological variability (days) and cloud cover. Comparison of CHLrel and FLHrelretrievals to in situ mooring data collected off the central Oregon coast from summer 2009 through winter 2010 shows that the products are a robust means to detect bloom events during the summer upwelling season. Evaluation of winter performance was inconclusive due to persistent cloud cover and limited in situ chl-a records. Pairing the products with coincident in situ physical proxies provides a tool to elucidate the conditions that induce bloom onset and identify the physical mechanisms that affect bloom advection, persistence, and decay. These products offer an excellent foundation for remote bloom detection and monitoring in this region, and the methods developed herein are applicable to any region with sufficient CHL and FLH coverage.

Item Details

Item Type:Refereed Article
Keywords:California Current, Oregon coast, bloom timing, phenology, satellite remote sensing, upwelling
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Physical Oceanography
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Strutton, PG (Associate Professor Peter Strutton)
ID Code:83678
Year Published:2012
Web of Science® Times Cited:9
Deposited By:IMAS Research and Education Centre
Deposited On:2013-03-20
Last Modified:2017-11-01
Downloads:0

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