HAWAIIAN MOORING DATA NOTES (98a)
PIs: Mark Abbott and Ricardo Letelier (OSU)
processed by: Jasmine S. Bartlett
November 18, 1998


Mooring : HALE ALOHA - 4
Location : near Stn. Aloha, Hawaii (22o 30' N, 158o W)
Period : April 30 1998 - Nov 6 1998
Instrument : OCI-200 irradiance meter (Satlantic, Inc.)
Measurements : downwelling irradiance at seven wavebands
Depth of instrument : 25 m
Data files : aloha98a.dat
Calibration file : hale98sd.cal


Data Structure
column 1 	: decimal day (Hawaii Standard Time, 
no daylight savings corrections required)
column 2 	: Ed412 (uW cm-2 nm-1)
column 3 	: Ed443 (uW cm-2 nm-1)
column 4 	: Ed490 (uW cm-2 nm-1)
column 5 	: Ed700 (uW cm-2 nm-1)
column 6 	: Ed555 (uW cm-2 nm-1)
column 7 	: Ed670 (uW cm-2 nm-1)
column 8 	: Ed683 (uW cm-2 nm-1)


Calibration File structure
column 1 	: center wavelength (nm)
column 2 	: calibration factor (uW cm-2 nm-1/count)
column 3 	: dark value (counts)
column 4 	: immersion correction

Quality Control

Data were removed from the start of the data file to remove 
the effects of the mooring deployment and incorrect date/time 
stamps.  No further processing was done to these data.  Note 
that the dark values in the calibration file were taken from 
the measured minimum night values during the deployment.  These 
dark values differed from those found during the pre-deployment 
calibration, which yielded negative irradiances when used.