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International Journal of Remote Sensing Volume 24, 2003 - Issue 19
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Original Articles

Simultaneous measurements of remote lidar chlorophyll and surface CO2 distributions in the Ross Sea

R. Barbini National Institut for Energy, Environment and New Technologies (ENEA), Applied Physics Department, Via Fermi 45, 00044 Frascati, Rome, Italy
,
R. Fantoni National Institut for Energy, Environment and New Technologies (ENEA), Applied Physics Department, Via Fermi 45, 00044 Frascati, Rome, Italy
,
A. Palucci Corresponding author National Institut for Energy, Environment and New Technologies (ENEA), Applied Physics Department, Via Fermi 45, 00044 Frascati, Rome, Italy
,
F. Colao National Institut for Energy, Environment and New Technologies (ENEA), Applied Physics Department, Via Fermi 45, 00044 Frascati, Rome, Italy
,
S. Sandrini University of Bologna, Department of Chemistry, via Selmi, 2, Bologna, Italy
,
S. Ceradini Italian Electrotecnic Experimental Centre (CESI) Spa, via Rubattino, 54, Milan, Italy
,
L. Tositti University of Bologna, Department of Chemistry, via Selmi, 2, Bologna, Italy
,
O. Tubertini University of Bologna, Department of Chemistry, via Selmi, 2, Bologna, Italy
&
G. M. Ferrari European Community-Joint Research Centre, Ispra, Varese, Italy
 show all
Pages 3807-3819 | Received 06 Feb 2002, Accepted 24 Jul 2002, Published online: 13 May 2010
 
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Abstract

A comparison between continuous lidar fluorosensor chlorophyll-a measurements and partial pressure of CO2 (pCO2) in surface water is presented. The data were gathered during the XVI Italian Antarctic expedition in the Western Ross Sea and crossing the Southern Ocean. Anticorrelation between CO2 levels and chlorophyll-a determinations was observed throughout the cruise in the late austral summer 2000/01. The survey revealed the presence of high productivity in polynya regions and close to the ice edges. The lidar data, reported here, are consistent with the results of previous campaigns conducted in the same investigated area. The relationship between pCO2 and chlorophyll-a concentration are discussed in terms of biologically driven phenomena responsible for the pCO2 undersaturation with respect to the atmospheric value during the austral summer.

Acknowledgments

This work was financially supported by the Italian Research Programme for Antarctica (PNRA), Technology Sector within the project 11–5 Palucc5, for the period 1999–2001.

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