Remote sensing of the southern ocean by MERIS, MODIS, SeaWiFS and ENEA Lidar

L. Fiorani, I.G. Okladnikov, A. Palucci

Research output: Contribution to journalArticle

6 Citations (Scopus)


Oceanic phytoplankton plays a major role in climate regulation. This explains the international efforts in space monitoring of chlorophyll-a concentration, i.e. the main indicator of algal biomass. In this study three radiometers (MERIS, MODIS and SeaWiFS), aboard satellites, and the ENEA lidar, aboard a ship, are intercompared. Important discrepancies among the radiometers have been observed. In particular, MERIS can be up to 100% apart from MODIS and SeaWiFS. This difference reduces to about 35% if MERIS is calibrated with the ENEA lidar. Those results confirm the unavoidable need of precise measurements of chlorophyll-a concentration in close proximity to the sea surface. Moreover, it is demonstrated that regional calibrations of satellite radiometers lead to more accurate estimates of oceanic phytoplankton.
Original languageEnglish
Pages (from-to)1482 - 1488
Number of pages7
JournalJournal of Optoelectronics and Advanced Materials
Issue number6
Publication statusPublished - Jun 2008
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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