Evaluation of Chlorophyll-a and POC MODIS Aqua Products in the Southern Ocean

The Southern Ocean (SO) is highly sensitive to climate change. Therefore, an accurate estimate of phytoplankton biomass is key to being able to predict the climate trajectory of the 21st century. In this study, MODerate resolution Imaging Spectroradiometer (MODIS), on board EOS Aqua spacecraft, Leve...

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Bibliographic Details
Published in:Remote Sensing
Main Authors: William Moutier, Sandy J Thomalla, Stewart Bernard, Galina Wind, Thomas J Ryan-Keogh, Marié E Smith
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2019
Subjects:
remote sensing
ocean color
algorithm
chlorophyll
HPLC
fluorometry
particulate organic carbon
southern ocean
Science
Q
Southern Ocean
Online Access:https://doi.org/10.3390/rs11151793
https://doaj.org/article/c5a641b7d57d4546aaa69e4b1296d852
Description
Summary:The Southern Ocean (SO) is highly sensitive to climate change. Therefore, an accurate estimate of phytoplankton biomass is key to being able to predict the climate trajectory of the 21st century. In this study, MODerate resolution Imaging Spectroradiometer (MODIS), on board EOS Aqua spacecraft, Level 2 (nominal 1 km × 1 km resolution) chlorophyll-a (C <math display="inline"> <semantics> <msup> <mrow></mrow> <mrow> <mi>S</mi> <mi>a</mi> <mi>t</mi> </mrow> </msup> </semantics> </math> ) and Particulate Organic Carbon (POC <math display="inline"> <semantics> <msup> <mrow></mrow> <mrow> <mi>s</mi> <mi>a</mi> <mi>t</mi> </mrow> </msup> </semantics> </math> ) products are evaluated by comparison with an in situ dataset from 11 research cruises (2008–2017) to the SO, across multiple seasons, which includes measurements of POC and chlorophyll-a (C <math display="inline"> <semantics> <msup> <mrow></mrow> <mrow> <mi>i</mi> <mi>n</mi> <mspace width="0.166667em"></mspace> <mi>s</mi> <mi>i</mi> <mi>t</mi> <mi>u</mi> </mrow> </msup> </semantics> </math> ) from both High Performance Liquid Chromatography (C <math display="inline"> <semantics> <msup> <mrow></mrow> <mrow> <mi>H</mi> <mi>P</mi> <mi>L</mi> <mi>C</mi> </mrow> </msup> </semantics> </math> ) and fluorometry (C <math display="inline"> <semantics> <msup> <mrow></mrow> <mrow> <mi>F</mi> <mi>l</mi> <mi>u</mi> <mi>o</mi> </mrow> </msup> </semantics> </math> ). Contrary to a number of previous studies, results highlighted good ...

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