meris enabled chlorophyll retrieval: same coefficients for 2 algorithms

Topic Products and Algorithms / Satellite Data Products & Algorithms / meris enabled chlorophyll retrieval: same coefficients for 2 algorithms (locked) (2033 hits)

By hesselmans Date 2011-02-16 15:11

In run/data/meris/msl12_defaults.par I found:

# algorithm controls
# ------------------
chloc2_wave=[490,560]
chloc2_coef=[0.2389,-1.9369,1.7627,-3.0777,-0.1054]
chloc3_wave=[443,490,560]
chloc3_coef=[0.2389,-1.9369,1.7627,-3.0777,-0.1054]

This suggest that two meris chlorophyll retrieval algorithms have exactly the same coefficients.
I cannot believe this is true.
Can someone provide the correct coefficients and inform me whether or not the same (erroneous)
coefficients are used in the SeaDAS code.

Regards, Gerard

By @sean Date 2011-02-18 21:39

Gerard

This appears to be an error. I'll assume something got lost in translation :-)

The oc3 coefficients for MERIS should be:
[0.2521, -2.2146, 1.5193, -0.7702, -0.4291]
See: http://oceancolor.gsfc.nasa.gov/REPROCESSING/R2009/ocv6/

Thanks for noticing, we'll include this in the next SeaDAS update.

Sean

Topic Products and Algorithms / Satellite Data Products & Algorithms / meris enabled chlorophyll retrieval: same coefficients for 2 algorithms (locked) (2033 hits)