PAR

Dataset description

Acquisition description

 dates:           20 January 2002 to 21 February 2002  (20020120-20020221) 
 location:        N: -52.385  S: -66.611  W: -175.220  E: -166.946 
 
 
 Methodology: Downwelling photosynthetically active radiation (400 - 700nm, PAR) measured 
    above the surface of the ocean -- Ed(0+). Irradiance was measured with a Biospherical 
    Instruments (serial #10127, calibrated 11/1/01) cosine collector mounted on top of the 
    crane hanger on the port side stern quadrant of the R/V Melville.  There was very little, 
    if any, ship-shading at this site.  Additionally, this site was close to the on-deck 
    incubator farm.  

Processing description

  
 Change history:
    070509: downloaded original zipped data (PAR.zip) and plots (Par.pdf) from SOFeX project data web site.
    070511: unzip PAR.zip to Melville_PAR_submit.xls
    080815: added to OCB database by Cyndy Chandler, OCB DMO, (cchandler@whoi.edu)
  
 OCB DMO Note: Four worksheets were contained in the original file: Documentation, January, February,
    and Daily_PAR. Contents of January and February files have been combined to create this data set.
    The Documentation and Daily_PAR worksheets are reproduced in the PI note below.  The locaton
    range bounding box above is an estimate.  No location data were reported with the PAR data files.

 PI note: Irradiance data was collected over time periods of 5 seconds to 30 seconds.  In two of the 
    worksheets (January, February), the mean, minimum, maximum, standard deviation, and number of data 
    points is given for each time interval.  
    
 Contact: Mike Hiscock  (hiscock@duke.edu)
          135 Duke Marine Lab Road
          Beaufort, NC  28516   

 Daily PAR summary table of the total daily PAR from sunrise to sunset.  
 There is also an accompanying PDF format file with graphs of PAR vs. time.
 
                Ed(0+) is E(sub)d(0^+)
                Ed(0+) downwelling PAR just above the surface of the
Local Day       ocean, integrated over one day.  (mol quanta m-2 d-1 )
       
1/22/2002       33.9
1/25/2002       47.3
1/26/2002       39.3
1/27/2002       38.4
1/28/2002       17.8
1/29/2002       39.8
1/30/2002       10.5
1/31/2002       22.2
2/01/2002       20.5
2/02/2002       21.4
2/03/2002       14.3
2/04/2002       11.6
2/05/2002       21.0
2/06/2002       18.5
2/07/2002       16.9
2/08/2002       28.6
2/09/2002       15.8
2/10/2002        9.5
2/11/2002       22.1
2/12/2002       36.4
2/13/2002       43.8
2/14/2002       30.9
2/15/2002       18.6
2/16/2002       12.4
2/18/2002       27.2
2/21/2002       23.7

This document is created from the content of the BCO-DMO metadata database.    2009-11-22  09:07:55