drifters

 PI:              Mark Abbott
 of:              Oregon State University
 dataset:         Drifter downwelling irradiance, upwelling radiance
                            and sea-surface temperature data
 project/cruise:  AESOPS - Drifters
 ship:            Nathaniel B. Palmer
 
 Methodology

 Parameter   Description                                 Units
 

 yrday       decimal days (GMT time)
                 w/Jan 1 00:00:00 1993 as day 1
                 value of 1343 is September 4, 1996
 lat         latitude (negative = south)                  decimal degrees
 lon         longitude (negative = west)                  decimal degrees
 temp_SST    sea surface temperature                      degrees C
 Ed_490      downwelling irradiance at wavelength 490     micro W/(cm^2 nm)
 Lu_XXX      upwelling radiance at wavelength XXX         micro W/(cm^2 nm sr)