Parameter: Fm_L4

Dataset: 
Series 3B: A-pulse computed photochemical measurements
Parameter: 
fluorescence
Master parameters information
Short Name:
 fluor
Short Description:
 fluorescence
Official Name:
 fluorescence
No Data Value:
Description:
 

Fluorescence. Indirect measure of pigment concentration.

Units and collection method may vary. Units often reported in milligrams/meter^3 (mg/m3) or micromoles per liter (ug/L). Sometimes reported after being calibrated against extracted pigment concentrations.

In JGOFS/GLOBEC projects fluorescence is measured from CTD instrument sensor.

Dataset-parameters information
Supplied Name: 
Fm_L4
Supplied Units: 
RFU (Relative Fluorscence Units)
Conversion Necessary: 
no
Conversion Utility: 
No Data Value: 
nd
Description: 
The fourth measurement of the maximum fluorescence following exposure to actinic light for another 12 seconds (L4 indicates the fourth measurement in the "light" phase)