1. GlobColour: New/Future products
Samantha Lavender , Yaswant Pradhan
and the GlobColour Team
2nd GlobColour Users Workshop

2. Development of a merged PAR satellite product
SeaWiFS
2nd GlobColour Users Workshop

3. Based on one year of input data (2003):
PAR: Current approach
Based on one year of input data (2003):
- Extend GlobColour to produce SeaWiFS and MODIS PAR (MERIS implemented in Phase 1) from Level-1.
- Produce individual sensor Level-3 PAR products.
Compare the GlobColour to NASA products to check for consistency.
Compare the two merged (from Level-1b to Level-3 or merged Level-3) PAR products to in situ data sources and check for consistency and accuracy.
Assess the impact on PAR of having one, two or three sensors.
2nd GlobColour Users Workshop

4. PAR: satellite (SeaWiFS) vs. in situ (AMT)
2nd GlobColour Users Workshop

5. Euphotic depth (Zeu) from Chl1 (Morel et al., 2007)
Depth of 1% light level
2nd GlobColour Users Workshop

6. Secchi disk depth (Zsd) from Chl1 (Morel et al., 2007)
2nd GlobColour Users Workshop

7. GHRSST Diurnal Variability Working Group (Merchant et al. In Prep)
Mean daily max dT/K
Mean recip wind
Mean Kd(490)
Lack of wind is the main driver. However, Kd(490) explains 2.4% of the dSST variance, and the sign is such that high Kd(490) promotes diurnal warming.
2nd GlobColour Users Workshop

8. Thickness of Heated Layer (Zhl) from Kd490
2nd GlobColour Users Workshop

9. Phytoplankton Functional Types
Raitsos et al. (In Press) Probability of diatoms from ocean colour, SST and functional information.
2nd GlobColour Users Workshop

10. Summary . Products can be split into two categories:
Require processing from Level-1/Level-2 or a combination of sources e.g. PAR and primary production (SST and ocean colour)
Can be easily calculated from existing GlobColour products by applying algorithms/models to existing products
The users could calculate the 2nd set on their own, but is that the best way? Yes, for those able to cope with downloading and processing. An alternative is to develop a GRID approach so that the users do the processing, but using remote resources and a user friendly front end.
What do users want? A coastal version of GlobColour? More difficult, but shouldn’t be avoided because the availability of products drives development/usage and hence further research.
2nd GlobColour Users Workshop