August 2003 Monterey Bay

Instruments were deployed from R/V Point Sur. Primary IOP instruments were deployed on the HydroProfiler package to collect data throughout the water column, and the WALRUS hyperspectral radiometer buoy was deployed in a tethered mode to collect upwelling and downwelling light spectra, just above and just below the surface.

To receive access to the data, please contact HOBI Labs.

INSTRUMENTATION
Instrument	Short name	Manufacturer	Serial Number	Deployment Platform	Measurements
a-Beta	aβ	HOBI Labs	AB000119	HydroProfiler	β(140°), b_b, K, a (532 nm)
c-Beta	cβ	HOBI Labs	CB000112	HydroProfiler	β(140°), b_b, c (532 nm)
HydroScat-2	HS2	HOBI Labs	H2000322	HydroProfiler	β(140°), b_b (470, 676nm), fl (676nm)
HydroScat-4	HS4	HOBI Labs	H4020101	HydroProfiler	β(140°), b_b (420, 488, 660, 850nm)
HydroScat-6	HS6	HOBI Labs	HS980110	HydroProfiler	β(140°), b_b (420, 442, 470, 510, 589, 676nm), fl(510, 676nm)
HydroBeta	Hβ	HOBI Labs	Prototype	HydroProfiler	β(532nm) (10, 20, 30, 45, 90, 110, 120, 130, 140, 150, 160, 170°)
AC-9	AC9	WET Labs	AC90124	HydroProfiler	a, c (412, 440, 488, 510, 532, 555, 630, 676, 715 nm)
SBE-19	CTD	Sea-Bird Electronics	983	HydroProfiler	Salinity, Temperature, Depth
HydroRad-E1	HR	HOBI Labs	SR020101	On Deck	E_d(surface, 350 to 850 nm)
WALRUS	WR	HOBI Labs	WR020101	Tethered buoy	E_d(surface), L_d(surface), L_u(air), L_u1(1m), L_u2(1m), (350 to 850 nm) (configuration picture)
PRR-600S	PRR	Biospherical Instruments	19617	HydroProfiler	E_d(surface) (412, 443, 490, 510, 532, 555, 670 nm)
PRR-610	PRR	Biospherical Instruments	19618	On Deck	E_d(profiling), L_d(profiling) (412, 443, 490, 510, 532, 555, 670 nm)

Cast designations:

HP = HydroProfiler profile
W = WALRUS; the WALRUS buoy is allowed to drift behind the ship, well away from its shadow, while Es values are simultaneously measured on deck. During some casts, the ship propellers were spun to produce bubbles, to measure their effect on the near-surface radiances. WALRUS casts have 3-digit numbers where the first digit indicates a group of casts close in time, and the 3rd digit indicates an individual member of the group.

Each day, a separate series of cast numbers was used for each type of cast. That is, each day might have casts HP1, HP2, etc., W100, W200, etc.

DATASETS
								Instruments
Date (M-D-Y)	Cast	Start Time (local)	Lat 36° N	Lon 121° W	Bottom Depth (m)	Profile Depth (m)	Notes	CTD	aβ	cβ	HS2	HS4	HS6	Hβ	AC9	HR	WR	PRR
8-27-03	W100	10:19	54.574'	57.256'	31	NA	Experiment to test optical effect of bubbles from propeller thrust										√
8-27-03	W101	10:22	54.574'	57.256'	31	NA											√
8-27-03	W102	10:25	54.574'	57.256'	31	NA											√
8-27-03	W103	10:26	54.574'	57.256'	31	NA											√
8-27-03	HP1	10:42	54.518'	57.192'	≈35	30		√	√	√	√		√	√	√
8-27-03	HP2	10:58	54.336'	57.168'	≈35	1	Near-surface time series for Hβ dark
8-27-03	HP3	12:40	52.503'	58.804'	≈60	1	Near-surface time series for Hβ dark
8-27-03	HP4	13:00	52.472'	58.843'	≈60	55		√	√	√	√		√	√	√			√
8-27-03	HP5	13:15	52.355'	59.033'	≈60	55		√	√	√	√		√	√	√			√
8-27-03	HP6	13:31	52.294'	59.185'	≈60	1	Near-surface time series for Hβ dark
8-27-03	W200	13:45	52.242'	59.352'	≈60	NA	Boat thrust during sample #4										√
8-27-03	W201	13:48	?	?	≈60	NA	Boat thrust during sample #6										√
8-27-03	W202	13:55	52.062'	59.459'	≈60	NA	Boat thrust during sample #6										√
8-27-03	W203	13:59	52.079'	59.471'	≈60	NA	Boat thrust during sample #7										√

8-28-03	HP1	11:31	53.354'	122° 07.430'	≈85	83		√	√	√	√	√	√	√	√			√
8-28-03	HP2	11:42	53.343'	122° 07.453'	≈85	1	Near-surface for Hβ and HS dark											√
8-28-03	HP3	14:23	42.558'	52.350'	74	1	Near-surface for Hβ and HS dark											√
8-28-03	HP4	14:35	42.392'	52.418'	74	66		√	√	√	√	√	√	√	√			√

8-29-03	HP1	10:40	45.636'	122°00.817'	>500	160		√	√	√	√	√	√	√	√			√
8-29-03	HP2	10:58	45.678'	122°00.988'	>500	1	Near-surface for Hβ and HS dark
8-29-03	HP3	11:32	46.512'	57.828'	>500	10	Fixed depth for Hβ and HS dark
8-29-03	HP4	12:10	46.406'	58.266'	>500	200		√	√	√	√	√	√	√	√			√
8-29-03	HP5	12:36	46.365'	58.447'	>500	60		√	√	√	√	√	√	√	√			√
8-29-03	HP6	14:10				70	AC9 contaminated during part of cast	√	√	√	√	√	√	√	*			√
8-29-03	HP7	14:20				70	downcast only	√	√	√	√	√	√	√	√	√	√	√
8-29-03	HP8	14:27				70	upcast of HP7	√	√	√	√	√	√		√			√

August 2003 Data Summary