Table 1.

Abbreviations used in more than one subsection of the text

Abbreviation	Description
bbp	particulate optical backscattering coefficient
Chl	Chlorophyll a concentration
cp	particulate optical beam attenuation coefficient
Dbbp	area-weighted mean particle diameter from optical backscattering
DOC	dissolved organic carbon concentration
GOP	Gross O2 productivity from O2 diel cycles
GPP	Gross primary productivity
GPPbbp	GPP from optical backscattering diel cycles
GPPChl	GPP from in situ chlorophyll and light measurements
GPPcp	GPP from optical beam attenuation diel cycles
JGOFS	Joint Global Ocean Flux Study
KPAR	Diffuse attenuation coefficient of PAR
ML	Mixed layer
MLD	Mixed layer depth
NPP	Net primary productivity
NPPChl	NPP from in situ chlorophyll and light measurements
PAR	photosynthetically available radiation
Pm	Maximum GPP (light saturated)
POC	Particulate organic carbon concentration
POCbbp	POC from optical backscattering
POCcp	POC from optical beam attenuation
PP	Primary productivity
RΦ	Phytoplankton respiration rate
S	Salinity
T	Temperature
α	Initial slope GPP/PAR (light limited)
ε	coefficient representing “sharpness” of NPP vs PAR relationship