1. A HEIGHT AND STRENGTH ANALYSIS OF THE MARINE BOUNDARY LAYER OFF THE CALIFORNIA COAST
LCDR Matthew J. Moore
13 Sep 2004
OC3570 Cruise Project

2. INTRODUCTION Summer Regime Marine Boundary Layer Winter Regime
Inversion (warming aloft - cooling below)
Subsidence from EPH
Cold water
Summer Regime
Position of EPH - Moves north – Increased
subsidence
Upwelling – increased cooling
Winter Regime
Lack of above conditions
Synoptic pattern more variable

3. MEASUREMENTS Cruise Legs 4 Aug – 11 Aug 04 Rawinsondes from both legs
Global positioning system (GPS)
Underway Data Acquisition System (UDAS)

4. DATA PROCESSING MATLAB used to process and graphically
view Rawinsondes and UDAS
GARP used to view NOGAPS fields and
satellite images
RAOBS – Vandenberg soundings

5. SYNOPTIC PATTERN L
990
WARM LAND H
1025

6. SONDE

7. INVERSION STRENGTH WAA VEERING WINDS S12 BLUE S13 CYAN S14 MAGENTA
S15 RED

8. SONDE 12 13 14 15 BASE: 207 m THICKNESS: 129 m TEMP: 12.4 °C
STRENGTH: 9°C / 100 m

9. AUG 8TH 01Z

10. AUG 8TH 01Z
0232z
S16
S16
S17
0354z
S18
S17
S19
0750z
S18
1133z
S19

11. OUTBOUND PORT SAN LUIS

12. BASE: 336 m THICKNESS: 175 m TEMP: 9.8 °C STRENGTH: 5°C / 100 m
S16 BLUE
S17 CYAN
S18 MAGENTA
S19 RED

13. COAST PARALLEL
LEG 1

14. TEMPERATURE PROFILES

15. INBOUND OFFSET PROFILES

16. LEG 2 HEADING SOUTH

17. AUG 9TH 00Z
2327z 8 AUG
S21
VEERING

18. WARM AIR ADVECTION

20. AUG 10TH 00Z
S23
S22
2301z 9 Aug

22. AUG 11TH 00Z
RV PT SUR INBOUND CALCOFI LINE 85

24. S29
S28
S27

25. S29
S28
S27