Dataset: bottle_proc
Deployment: HX271

Rosette Bottle Data (nutrients, chl), 2001 and 2003

Principal Investigator:

Suzanne Strom (Western Washington University, WWU)

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. GLOBEC Northeast Pacific (NEP)

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/450256/data

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Description

Bottle Data (nutrients, salinities, pigments) from rosette casts from CGOA process cruises.

Rosette Bottle Data from Alpha Helix Cruises

Summary prepared by Erin Macri [WWU]; Prepared for serving: H. Batchelder, 2 Sept 2004
Re-served for text or mapserver access Jan 2007, GLOBEC DMO

Data Contact:
Suzanne L. Strom
Western Washington University
Shannon Point Marine Center
1900 Shannon Point Road
Anacortes, WA 98221-4042
stroms@cc.wwu.edu
Phone: 360-293-2188
FAX: 360-293-1083

Methods & Sampling

Dataset acquisition description

Water column chlorophyll samples were size-fractionated using a 'fractionation cascade' . Water passed through a sequential arrangement of three filters: 20 um pore-size polycarbonate (47 mm), 5 um pore-size polycarbonate (47 mm) and 0.7 um effective pore-size glass fiber (25 mm). Preliminary tests showed that 47-mm glass fiber filters had a reduced chlorophyll extraction efficiency compared with filters 25 mm in diameter. Filters were immediately placed in 90% acetone, extracted 24 hr (-20degC, darkness), and analyzed for chlorophyll and phaeopigments a on a Turner TD700 (April, May) or Turner 112 (July) fluorometer. Total chlorophyll concentrations were estimated from the sum of the three size fractions.

Deployment-specific acquisition description

Data Processing Description

Dataset Processing Description

1. Physical data processed by Tom Weingartner (UAF)
2. Chlorophylls provided by Suzanne Strom (WWU)
3. Nutrient analysis provided by Calvin Mordy (NOAA/PMEL)
4. Dates and times are in Local; Local is +8 hours from GMT e.g., 1100 GMT ==> 0300 Local

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-0109078	NSF Division of Ocean Sciences
unknown NEP NOAA	National Oceanic and Atmospheric Administration

Instruments

Niskin bottle

Supplied Name: Niskin Bottle

Supplied Description:

Niskin bottle cast, use Bottle_Niskin

Instrument Type

Generic Name: Niskin bottle

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/

Generic Description:

A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
cruiseid	Short-hand name of the cruise.	text	cruiseid
year	4-digit year in YYYY format.	unitless	year
cast	CTD Cast Number.	dimensionless	cast
station_std	Standard Station Name.	dimensionless	station_std
station	Alternate Station Name, used on cruise.	dimensionless	station
lat	latitude, N is positive	decimal degrees	lat
lon	longitude, W is negative	decimal degrees	lon
date_local	Month/Day/Year.	mm/dd/yy	date_local
time_local	Local time, 24-hour clock.	HHMM	time_local
yrday_local	Julian day	Jan. 1 = 1, decimal day, <br> for plotting	yrday_local
event	Event number used on cruise.	eg. ev#001 = 1	event
depth	target depth for bottle to trip	meters	depth
depth_real	actual depth bottle tripped	meters	no_bcodmo_term
chla_gt_20um	chlorophyll a concentration in water that passed through 20 micron filter	micrograms/liter	chl_a_20u
chla_5_to_20	chlorophyll a concentration in water that passed through 20 micron filter and caught on 5 micron filter	micrograms/liter	no_bcodmo_term
chla_lt_5	chlorophyll a concentration in water that passed through 5 micron filter	micrograms/liter	chl_a_5u
chla_total	total chlorophyll a concentration	micrograms/liter	chl_a
PO4	phosphate concentration	micromoles/L	PO4
Si	silicate concentration	micromoles/L	Silicate
NO3	nitrate (after subtracting NO2 from total nitrate)	micromoles/L	no_bcodmo_term
NO2	nitrite concentration	micromoles/L	no_bcodmo_term
temp	temperature	degrees C	temp
sal	salinity	psu (unitless)	sal
sigma_t	sigma-t density	kg/m<sup>3</sup>	sigma_t
flvolt	fluorometer reading	volts	flvolt
par_v	photosynthetically available radiation	volts	par_v
month_local	Month, local time.	mm (01 to 12)	month_local
day_local	Day of month, local time.	dd (01 to 31)	day_local

Database

Contribute Data

Dataset: bottle_proc
Deployment: HX271

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: bottle_procDeployment: HX271

Dataset acquisition description

Deployment-specific acquisition description

Dataset Processing Description

Dataset: bottle_proc
Deployment: HX271