A first attempt at testing correlation between MODIS ocean colour data and in situ chlorophyll-a measurements within Maltese coastal waters

A. Deidun; A. Drago; A. Gauci; A. Galea; J. Azzopardi; F. Mélin

doi:10.1117/12.896189

7 October 2011 A first attempt at testing correlation between MODIS ocean colour data and in situ chlorophyll-a measurements within Maltese coastal waters

A. Deidun, A. Drago, A. Gauci, A. Galea, J. Azzopardi, F. Mélin

Author Affiliations +

Proceedings Volume 8175, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2011; 81750J (2011) https://doi.org/10.1117/12.896189
Event: SPIE Remote Sensing, 2011, Prague, Czech Republic

Abstract

The study of spatio-temporal trends for key water quality parameters in the Maltese coastal waters is hindered by the lack of systematic observations spanning over the full domain and for sufficiently long time periods. Satellite data offers an alternative source of information, but requires ground truthing against in situ measurements. The aim of this study is to attempt the statistical comparison of MODIS ocean colour data, for a near-shore marine area off the north-east coastline of Malta, with in situ surface chlorophyll-a measurements, and to extract a twelve-month ocean colour data series for the same marine area. Peaks in surface chlorophyll-a concentration occurred in the January-February period, with lowest values being recorded during the early spring period. Log bias values indicate that the MODIS dataset under-estimates the surface chlorophyll-a values, whilst RMSD and r² values suggest that the match-up between satellite and in situ values is only partly consistent.

Citation Download Citation

A. Deidun, A. Drago, A. Gauci, A. Galea, J. Azzopardi, and F. Mélin "A first attempt at testing correlation between MODIS ocean colour data and in situ chlorophyll-a measurements within Maltese coastal waters", Proc. SPIE 8175, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2011, 81750J (7 October 2011); https://doi.org/10.1117/12.896189

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