1. Biological Models NPZD & CPD Rubao Ji Collaborators: Davis, Chen, Beardsley, Townsend, Durbin, Runge, Flagg, Tian, Qiao, Petrik

2. Status On-line coupling (off-line in future?)
Initiated NPZD with climatology (NP)
Completed 1995 whole year run for NPZD
Gathered copepod data (GLOBEC,MARMAP, ECOMON, AZMP)
Testing CPD model (Pseudocalanus), impletmented “stage with mean age” method, testing “EOF” method
Ready for NPZD run in other GLOBEC yrs

3. Model structure

4. Surface - Nitrogen

5. Surface - Phytoplankton

6. Transect - Nitrogen

7. Transect - Phytoplankton

8. Model-data comparison (1)
Chl-a on the crest of GB (< 60m) in Data from E. Durbin

9. Model-data comparison (2)
Chl-a on NEP and SF in Data from E. Durbin

10. Nitrogen cycle
Redline from Pastsuzak et al., 1982

11. CPD Initial Condition

12. Day 30 E N C A

13. Day 90

14. NAO Slope Water NAO- Labrador Slope Water Intrusion Colder, Fresher
Less Nutrient
NAO+
Warm Slope Water Intrusion
Warmer, More saline and
Nutrient rich
Drinkwater et al., 2003

15. Nitrogen Initial Condition Climatological Condition (CC)
Bottom Enriched Condition (BEC)

16. CC VS BEC on GB CC
BEC

17. Flux comparison CC
BEC

18. CC VS BEC in JB CC
BEC

19. CC VS BEC in WB CC
BEC