chl_s

Beam Fluorometer summary data

Mounted 4.1 m below mean sea-level on beam at MVCO Air-Sea Interaction Tower

Sensors on density array were Wetlabs FLSB or FLNTU (with backscatter for turbidity) ... see after table below:
FLNTU
FLSB

Here is the list of field names:

Field name	Description	Units
Year	The year the data were collected	n/a
Yday	Decimal year day	UTC, January 1 at 00:00 is 1.0
MO	The month the data was collected	UTC
DA	The day the data were collected	UTC
HH	The hour the data were collected	UTC
MM	The minute the data were collected	UTC
SS	The second the data were collected	UTC
lrec_chl	Total number of records collected during averaging period	n/a
fl_ref	Mean fluorescence reference channel	raw counts
fl_mean	Mean fluorescense	raw counts
fl_median	Median fluorescense	raw counts
fl_std	Stdev in burst fluorescense	raw counts
fl_len	no. recs passing filter	n/a
Chlorophyll	mean value from fl_mean	mg/m^3
NTU_Ref	mean NTU (Turbidity) reference channel	raw counts
NTU_mean	Mean NTU	raw counts
NTU_median	Median NTU	raw counts
NTU_std	Stdev in NTU	raw counts
NTU_len	no. recs passing filter	n/a
bb_beta	Mean backscattering from NTU_mean	Beta/m/steradian angle
Thermistor	mean	raw counts

Deployed 8/20/2003 - 2/2/2004;
FLSB-024 (calibrated 1/21/03) NOTE: calibration off = 63; use 80 as per lab cal
Chl: Sf = 0.0078, off = 80
maxcounts = 16358

Deployed 5/6/2004 - 6/3/2004;
FLNB-024 (calibrated 3/8/04)
Chl: Sf = 0.0081, off = 80
maxcounts = 16362

Deployed 9/14/2004 - 5/4/2005
FLSB-042 (calibrated 6/30/2004)
Sf = .0078 and off = 92

Deployed 5/8/2006 - 9/18/2006
Deployed 9/27/2006 - 1/24/07
Deployed 2/1/2007 - 4/23/07 (lost in storm event)
FLSB-256 (calibrated 3/10/2006)
Sf = 0.0078 and off = 74
maxcounts 16331

Deployed 5/3/2007 - 9/20/2007
FLNTUSB-694 (calibrated 3/29/07)
Chl: Sf = 0.0061, off = 59 & beta: Sf_b = 1.766e-5, off_b = 48
maxcounts 4120

Deployed 12/13/2007 - 12/6/2008
FLNTUSB-693 (calibrated 3/29/07)
Chl: Sf = 0.0059, off = 49 & beta: Sf_b = 1.759e-5, off_b = 48
maxcounts 4121

fluorometer for beam deployment planned for 12/6/08
FLNTUSB-957
calibrated on 3/26/08
chl channel:
dark counts = 57
scale factor = 0.0120
NTU channel:
dark counts: 50
scale factor: 0.0060
NO beta calibration done on 3/26/08

Deployed 3/13/2009 - 7/14/2009
FLSB-693 (calibrated 3/29/07)
Chl: Sf = 0.0059, off = 49 & beta: Sf_b = 1.759e-5, off_b = 48
maxcounts 4121

Deployed 7/14/2009 - 5/11/2010
FLSB-417 (calibrated 6/1/07)
Chl: Sf = 0.0079, off = 87
maxcounts 16330

Deployed 5/11/2010 - 11/16/2010
FLNTUSB-694 (calibrated 7/14/09)
Chl: Sf = 0.0061, off = 55 & beta(for 700nm): Sf_b = 1.999e-5, off_b = 46
maxcounts 4120
NTU: Sf = 0.0061 and off=51

Deployed 11/16/2010 - present
FLNTUSB-960 (calibrated ?/??/10)
Chl: Sf = 0.00??, off = ?? & beta(for 700nm): Sf_b = 1.9??e-5, off_b = ??
maxcounts 41??
NTU: Sf = 0.00?? and off=??