Saldanha Bay, South Africa I: the use of ocean colour remote sensing to assess phytoplankton biomass

Autor:	Grant C. Pitcher, Marié E. Smith
Rok vydání:	2015
Předmět:	In situ Chlorophyll a Coefficient of determination Imaging spectrometer Aquatic Science Phytoplankton biomass chemistry.chemical_compound Oceanography chemistry Remote sensing (archaeology) Environmental science Satellite Bay Ecology Evolution Behavior and Systematics Remote sensing
Zdroj:	African Journal of Marine Science. 37:503-512
ISSN:	1814-2338 1814-232X
Popis:	The efficacy of ocean colour remote sensing in assessing the variability of phytoplankton biomass within Saldanha Bay is examined. Satellite estimates of chlorophyll a (Chl a) were obtained using the maximum peak-height (MPH) algorithm on full-resolution (300 m) data from the Medium Resolution Imaging Spectrometer (MERIS). Subsurface Chl a maxima often occur within Saldanha Bay below the mean detection depth of the satellite (1.5 m) during periods of thermal stratification. Consequently, the MPH product was poorly correlated to in situ data from 4 m depth (r2 and average relative percentage difference [RPD] of 0.094 and 53% respectively); however, the coefficient of determination was much improved if limited to in situ data collected under conditions of mixing (r2 and RPD of 0.869 and 89%, respectively). Composites of monthly MPH Chl a data reveal mean concentrations consistent with in situ seasonal trends of phytoplankton biomass, confirming the capability of the MPH algorithm to qualitatively resolve su...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::826829c381519b65a222c041a87d393c https://doi.org/10.2989/1814232x.2015.1093023 Zobrazit plný text záznamu Plný text ve formátu PDF