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

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Presentation transcript:

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

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

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

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

SYNOPTIC PATTERN L 990 WARM LAND H 1025

SONDE 12-13-14-15

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

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

AUG 8TH 01Z

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

OUTBOUND PORT SAN LUIS

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

COAST PARALLEL LEG 1

TEMPERATURE PROFILES

INBOUND OFFSET PROFILES

LEG 2 HEADING SOUTH

AUG 9TH 00Z 2327z 8 AUG S21 VEERING

WARM AIR ADVECTION

AUG 10TH 00Z S23 S22 2301z 9 Aug

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

S29 S28 S27

S29 S28 S27