1.  summary:               Climatology of Ocean Chlorophyll Amount (12 months)

2.  created by:            Steve Yeager

3.  date and time:         05 December 2003    

4.  created on:            dataproc

5.  dataset format:        ieeer8

6.  endian:                big

7.  archival copy location:  
    archival read password: CCSMPOP

	(/YEAGER/CHLOROPHYLL
  	 has all netcdf and ieeer8 and raw data for chlorophyll)
 
    also:
        /CCSM/inputdata/ocn/pop/gx3v5/forcing/chl_mm_SeaWiFs97-01_20031205.ieeer8
        /CCSM/inputdata/ocn/pop/gx3v5/forcing/chl_mm_SeaWiFs97-01_20031205.readme
        with write password "rusure"
 

8.  creation summary:

     The monthly chlorophyll distributions were provided by Carter Ohlmann,
     <carter@icess.ucsb.edu>, based on SeaWIFS data spanning the period of
     September 1997 to November 2001. Chlorophyll monthly distribution is provided
     over all ocean on a 1x1 degree resolution. There is no data available for sea
     ice covered oceans, and some regions have missing data due to clouds. To handle
     missing data (especially in the polar regions), a 1x1 topographic dataset is
     used to specify ocean points, with nearest-neighbor fill of missing data done
     twice, which fills isolated points and some points along ice edge. Next, all
     remaining points over ocean are filled with the value .05 mg/m^3, a value
     appropriate for ice melting conditions. Finally, all remaining (land) points
     are nearest-neighbor filled, which sets missing coastal values with reasonable
     chlorophyll amounts. The resulting filled data was interpolated to gx1 and gx3
     ocean horizontal resolutions.

9.  derived from:          
	mss:/YEAGER/CHLOROPHYLL/global_swfchl_monthly.nc
	mss:/YEAGER/CHLOROPHYLL/filled.nc	(filled version of above on 1x1)

10. code, scripts,namelists, etc, used
    to create this file:   

	/home/dataproc/yeager/RADIATION/CHLOROPHYLL/chloro_fill.run

11. History:

	Under direction of Bill Large, chlorophyll amount data was
	initially obtained as ascii text files by Steve Yeager during
	September 2002. Steve put these data into netCDF format.
	During January 2003, under direction of Bruce Briegleb, Steve
	filled and interpolated the data to gx1 and gx3 resolutions.
	Carter Ohlmann was consulted via email for suggestions on the
	filling and interpolation method.
 
    This file was copied from
mss:/YEAGER/CHLOROPHYLL/filled_gx3v5.ieee8
    to 
/fs/cgd/csm/inputdata/ocn/pop/gx3v5/forcing/chl_mm_SeaWiFs97-01_20031205.ieeer8
    by Steve Yeager on 05 December 2003.