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.
|Pages (from-to)||1482 - 1488|
|Number of pages||7|
|Journal||Journal of Optoelectronics and Advanced Materials|
|Publication status||Published - Jun 2008|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering
Fiorani, L., Okladnikov, I. G., & Palucci, A. (2008). Remote sensing of the southern ocean by MERIS, MODIS, SeaWiFS and ENEA Lidar. Journal of Optoelectronics and Advanced Materials, 10(6), 1482 - 1488.