Earthdata Forum

Dear all,

I have some questions about Zeu from Lee et al. algorithm.
    ** Could you suggest me resources to read about evaluation products? For example, When a product is considered standard or in evaluation? What this implies?
    ** Are there a description of the sources of uncertainties and bias of this algorithm output? Could be related to IOP determination?  

Kind regards,

Amaru

Hi Amaru,

For further details on the Lee et al. euphotic zone depth algorithm formulation, see:
Lee et al. 2007. "Euphotic zone depth: Its derivation and implication to ocean-color remote sensing", JGR, 112(C03009), doi:10.1029/2006JC003802.

As I understand (please correct me if I'm wrong):
"Standard" products are those that are routinely produced and distributed by NASA OBPG. Standard products are readily accessible for download from the L1&2 Browser and L3 Browser.
"Evaluation" products are algorithms that have been, as the name suggests, implemented in the processing code for evaluation by NASA OBPG. However, these data products are not typically produced for distribution. If you want to use an evaluation product, you can always process the data yourself using the OCCSW code.

I hope this gives you somewhere to begin.

Cheers,
Lachlan

Close :wink:

Evaluation products are produced and distributed by the OBPG.  These may one day become standard products (and will continue to be produced) or may be deemed not useful and eliminated from distribution by the OBPG.  Most evaluation products are only generated at Level 3.

Other than that, Lachlan is correct :grin: