Dataset: chloro_bottle
Deployment: AL9506

1995 and 1996 fairly raw chlorophyll data, Georges Bank, 1995-1996

Principal Investigator:

Dr David Mountain (Northeast Fisheries Science Center - Woods Hole, NOAA NEFSC)

Co-Principal Investigator:

Dr David Mountain (National Marine Fisheries Service, NMFS)

Ms Maureen Taylor (National Marine Fisheries Service, NMFS)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. GLOBEC Georges Bank (GB)

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/449301/data

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Description

Raw Extracted Chlorophyll Data from Broadscale CTD stations, 1995 and 1996.

PI NOTES:
The 1995 and 1996 bottle data were collected with a GO rosette mounted above the MK5 CTD. Water for chlorophyll extractions was taken at priority 1 and 2 stations and at 3 "standard" depths (according to a protocal set up by Ted Durbin and Dian Gifford at the University of Rhode Island). For each bottle, 3 replicate samples were run for consistency. 50 mls were filtered for 3 size fractions: total chlorophyll, chlorophyll from water filtered through a <20 micron mesh and chlorophyll from water filtered through a <5 micron mesh. This means that for any one station, there were 27 test tubes: 3 depths, 3 replicates, 3 size fractions. The samples were usually read at sea (after the 24 hour acetone extraction). If not, Ted Durbin"s Lab read them when the ship returned.

The companion object for this data is chloro_bot_chem, which details salinity, temperature, fluorometry and tranmissometry collected from the same bottles.

Contacts for the data:
David Mountain
NMFS
Woods Hole, MA 02543
508-495-2271
David.Mountain@noaa.gov
Fax: 508-495-2258
or
Maureen Taylor
NOAA/NMFS
166 Water Street
Woods Hole, MA 02543
508-495-2306
mtaylor@whsun1.wh.whoi.edu
FAX: 508-495-2258

Updated November 15, 2005; gfh

Methods & Sampling

Dataset acquisition description

The 1995 and 1996 bottle data were collected with a GO rosette mounted above the MK5 CTD. Water for chlorophyll extractions was taken at priority 1 and 2 stations and at 3 'standard' depths (according to a protocal set up by Ted Durbin and Dian Gifford at the University of Rhode Island). For each bottle, 3 replicate samples were run for consistency. 50 mls were filtered for 3 size fractions: total chlorophyll, chlorophyll from water filtered through a <20 micron mesh and chlorophyll from water filtered through a <5 micron mesh. This means that for any one station, there were 27 test tubes: 3 depths, 3 replicates, 3 size fractions. The samples were usually read at sea (after the 24 hour acetone extraction). If not, Ted Durbin's Lab read them when the ship returned.

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Funding

Award Number	Funding Source
unknown GB NOAA	National Oceanic and Atmospheric Administration
unknown GB NSF	National Science Foundation

Instruments

Niskin bottle

Supplied Name: Niskin Bottle

Supplied Description:

Niskin Bottles mounted on a Rosette.

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	cruise identification		cruiseid
year	year		year
cast	CTD rosette cast number		cast
bottle	bottle number on this cast		bottle
depth	depth of sample	meters	depth
fraction	size fraction of phytoplankton sampled	microns	no_bcodmo_term
chl_a	chlorophyll a, as calculated from fluorescence	micrograms/liter	chl_a
chl_a_avg	chlorophyll a average, based on three replicates	micrograms/liter	no_bcodmo_term
lat	latitude in decimal degrees: North is positive; negative denotes South	decimal degrees	lat
lon	longitude in decimal degrees: East is positive; negative denotes West	decimal degrees	lon
station_std	standard broad-scale station number	integer	station_std
day_local	local-time day	1 to 31	day_local
month_local	local-time month	1 to 12	month_local
time_local	local time of cast		time_local
yrday_local	local day and decimal time, as 326.5 for the 326th day of the year, or November 22 at 1200 hours (noon)		yrday_local

Database

Contribute Data

Dataset: chloro_bottle
Deployment: AL9506

Raw Extracted Chlorophyll Data from Broadscale CTD stations, 1995 and 1996.

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: chloro_bottleDeployment: AL9506

Raw Extracted Chlorophyll Data from Broadscale CTD stations, 1995 and 1996.

Dataset acquisition description

Dataset Processing Description

Dataset: chloro_bottle
Deployment: AL9506