FN Archimer Export Format
PT J
TI Net community production in the northwestern Mediterranean Sea from glider and buoy measurements
BT 
AF Hemming, Michael P.
   Kaiser, Jan
   Boutin, Jacqueline
   Merlivat, Liliane
   Heywood, Karen J.
   Bakker, Dorothee C. E.
   Lee, Gareth A.
   Cobas García, Marcos
   Antoine, David
   Shitashima, Kiminori
AS 1:1;2:2;3:3;4:3;5:2;6:2;7:2;8:2;9:4,5;10:6;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;
C1 Coastal and Regional Oceanography Lab, Centre for Marine Science and Innovation, UNSW Sydney, Sydney, Australia
   Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom
   Laboratoire d’Océanographie et du Climat, Sorbonne Université, Paris, France
   Remote Sensing and Satellite Research Group, School of Earth and Planetary Sciences, Curtin University, Perth, Australia
   Laboratoire d’Océanographie de Villefranche, Villefranche-sur-Mer, France
   Tokyo University of Marine Science and Technology, Tokyo, Japan
C2 UNSW, AUSTRALIA
   UNIV E ANGLIA, UK
   UNIV SORBONNE, FRANCE
   UNIV CURTIN, AUSTRALIA
   UNIV SORBONNE, FRANCE
   UNIV TOKYO MARINE SCI & TECHNOL, JAPAN
IN DOAJ
IF 3.2
TC 2
UR https://archimer.ifremer.fr/doc/00779/89102/94691.pdf
   https://archimer.ifremer.fr/doc/00779/89102/96029.pdf
LA English
DT Article
CR BOUSSOLE
AB The Mediterranean Sea comprises just 0.8 % of the global oceanic surface, yet considering its size, it is regarded as a disproportionately large sink for anthropogenic carbon due to its physical and biogeochemical characteristics. An underwater glider mission was carried out in March–April 2016 close to the BOUSSOLE and DyFAMed time series moorings in the northwestern Mediterranean Sea. The glider deployment served as a test of a prototype ion-sensitive field-effect transistor pH sensor. Dissolved oxygen (O2) concentrations and optical backscatter were also observed by the glider and increased between 19 March and 1 April, along with pH. These changes indicated the start of a phytoplankton spring bloom, following a period of intense mixing. Concurrent measurements of CO2 fugacity and O2 concentrations at the BOUSSOLE mooring buoy showed fluctuations, in qualitative agreement with the pattern of glider measurements. Mean net community production rates (N) were estimated from glider and buoy measurements of dissolved O2 and inorganic carbon (DIC) concentrations. Glider and buoy DIC concentrations were derived from a salinity-based total alkalinity parameterisation, glider pH, and buoy CO2 fugacity. The spatial coverage of glider data allowed calculating advective O2 and DIC fluxes. Mean N estimates for the euphotic zone between 10 March and 3 April were (−17 ± 35) for glider O2, (44 ± 94) for glider DIC, (17 ± 35) for buoy O2 and (49 ± 86) mmol m–2 d–1 for buoy DIC, all indicating net metabolic balance over these 25 days. However, these 25 days were actually split into a period of net DIC increase and O2 decrease between 10 and 19 March and a period of net DIC decrease and O2 increase between 19 March and 3 April. The latter period is interpreted as the onset of the spring bloom. The regression coefficients between O2 and DIC-based N estimates were 0.25 ± 0.08 for the glider data and 0.54 ± 0.06 for the buoy, significantly lower than the canonical metabolic quotient of 1.45 ± 0.15. This study shows the added value of co-locating a profiling glider with moored time series buoys, but also demonstrates limitations in achievable precision. 
PY 2022
PD AUG
SO Ocean Science
SN 1812-0784
PU European Geosciences Union (EGU)
VL 18
IS 4
UT 000847362600001
BP 1245
EP 1262
DI 10.5194/os-18-1245-2022
ID 89102
ER

EF