FN Archimer Export Format
PT J
TI Quenching correction for in vivo chlorophyll fluorescence acquired by autonomous platforms: A case study with instrumented elephant seals in the Kerguelen region (Southern Ocean)
BT 
AF XING, Xiaogang
   CLAUSTRE, Herve
   BLAIN, Stephane
   D'ORTENZIO, Fabrizio
   ANTOINE, David
   RAS, Josephine
   GUINET, Christophe
AS 1:1,2,3,4,5;2:1,3;3:4,5;4:1,3;5:1,3;6:1,3;7:6;
FF 1:;2:;3:;4:;5:;6:;7:;
C1 CNRS, Lab Oceanog Villefranche, Unite Mixte Rech 7093, Villefranche Sur Mer, France.
   Ocean Univ China, Lab Phys Oceanog, Qingdao, Peoples R China.
   Univ Paris 06, Unite Mixte Rech 7093, Lab Oceanog Villefranche, Villefranche Sur Mer, France.
   CNRS, Unite Mixte Rech 7621, Lab Oceanog Microbienne, Banyuls Sur Mer, France.
   Univ Paris 06, Unite Mixte Rech 7621, Lab Oceanog Microbienne, Banyuls Sur Mer, France.
   CNRS, Unite Propre Rech 1934, Ctr Etud Biol Chize, Villiers En Bois, France.
C2 CNRS, FRANCE
   UNIV OCEAN CHINA, CHINA
   UNIV PARIS 06, FRANCE
   CNRS, FRANCE
   UNIV PARIS 06, FRANCE
   CNRS, FRANCE
IF 1.95
TC 114
UR https://archimer.ifremer.fr/doc/00248/35965/36927.pdf
LA English
DT Article
CR BOUSSOLE
   MD 145 / KEOPS
BO Marion Dufresne
AB As the proxy for Chlorophyll a (Chl a) concentration, thousands of fluorescence profiles were measured by instrumented elephant seals in the Kerguelen region (Southern Ocean). For accurate retrieval of Chl a concentrations acquired by in vivo fluorometer, a two-step procedure is applied: 1) A predeployment intercalibration with accurate determination by high performance liquid chromatography (HPLC) analysis, which not only calibrates fluorescence in appropriate Chl a concentration units, but also strongly reduces variability between fluorometers, and 2) a profile-by-profile quenching correction analysis, which effectively eliminates the fluorescence quenching issue at surface around noon, and results in consistent profiles between day and night. The quenching correction is conducted through an extrapolation of the deep fluorescence value toward surface. As proved by a validation procedure in the Western Mediterranean Sea, the correction method is practical and relatively reliable when there is no credible reference, especially for deep mixed waters, as in the Southern Ocean. Even in the shallow mixed waters, the method is also effective in reducing the influence of quenching.
PY 2012
PD JUN
SO Limnology And Oceanography-methods
SN 1541-5856
PU Amer Soc Limnology Oceanography
VL 10
UT 000307929300003
BP 483
EP 495
DI 10.4319/lom.2012.10.483
ID 35965
ER

EF