http://lod.bco-dmo.org/id/dataset/785658
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2020-01-03
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Seawater biogeochemistry inshore and offshore the Bermuda coral reef from the Bermuda coral reef platform and adjacent Sargasso Sea extending to Bermuda Atlantic Time Series-station from 2014-2018
2020-01-03
publication
2020-01-03
revision
BCO-DMO Linked Data URI
2020-01-03
creation
http://lod.bco-dmo.org/id/dataset/785658
Rodney J. Johnson
Bermuda Institute of Ocean Sciences
principalInvestigator
Andreas Andersson
University of California-San Diego Scripps
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Johnson, R. J., Andersson, A. (2020) Seawater biogeochemistry inshore and offshore the Bermuda coral reef from the Bermuda coral reef platform and adjacent Sargasso Sea extending to Bermuda Atlantic Time Series-station from 2014-2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). Version Date 2020-01-03 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/785658 [access date]
Seawater biogeochemistry inshore and offshore the Bermuda coral reef Dataset Description: <p>From 2014 to 2018, surface seawater samples from the Bermuda coral reef platform were collected every month at 0.5–1-m depth using a 5-L Niskin bottle. Samples were also collected along a transect between Bermuda and BATS in conjunction with BATS cruises. All parameters were collected following BATS methodology (Knap et al., 1996).</p> Methods and Sampling: <p>Samples for dissolved oxygen were collected in 140 ml Pyrex iodine flasks, stored in a dark location and the necks of the flasks were sealed with seawater. Samples were analyzed after 6-8 hours, based on the Strickland and Parsons (1968) modification of the Winkler (1888) method. Analysis was performed on an automated titration system using an UV light endpoint detection system as designed by the late Robert Williams of SIO. Prior to running the samples, a series of standards (6-8) and blanks (3-4) were run for determination of the thiosulphate normality value. Precision was typically &lt;0.5 µmol kg-1.&nbsp;&nbsp;</p>
<p>TA and DIC samples were collected according to standard protocols (Dickson et al., 2007) using 250-mL Kimax brand glass sample bottles. Samples were immediately poisoned with 100 μL saturated solution of HgCl2. DIC was analyzed coulometrically using a UIC CM5011 CO2 coulometer combined with a VINDTA3C (Marianda Inc) or SOMMA system, alternatively based on infrared absorption using an AIRICA (Marianda, Inc) and a Li-Cor 7000 as the detector. TA was analyzed based on potentiometric acid titrations (∼0.1 N HCl) using a VINDTA3S (Marianda Inc). Performance and precision of the instruments were regularly verified using certified reference material (CRM) prepared by A. Dickson at Scripps Institution of Oceanography (SIO). The accuracy and precision of replicate CRMs on any given day of analyses were typically in the range of ±2–4 μmol kg−1 for both TA and DIC.</p>
<p>Samples for nitrate+nitrite, nitrite, phosphate, silicic acid and ammonia were filtered through 0.8 µm Nuclepore filters then frozen (-20°C) in HDPE bottles until analysis. Samples were analyzed on a four channel SEAL AutoAnalyzer III using modified methods from Knap et al. (1996).&nbsp; &nbsp;Analytical precision for triplicate nutrient measurements was approximately 0.03-0.05 µmoles kg-1. Certified standards from Ocean Scientific International were analyzed on a regular interval to maintain data quality.</p>
<p>Particulate Organic Carbon and Nitrogen (POC/PON) samples (2L) were filtered onto pre-combusted (450ºC, 5 hours) Whatman GF/F glass fiber filters (nominal pore size 0.7µm), and stored at -20°C.&nbsp; Dried acidified samples were be combusted at 980 ºC on an Exeter Analytical Elemental Analyzer as described in Knap et al. (1996). Field blanks and acetanilide standards were run with each batch of samples.&nbsp;</p>
<p>Phytoplankton pigment samples (4L) were filtered onto 25mm Whatman GF/F glass fiber filters, frozen in liquid nitrogen, and analyzed by both standard fluorometric and high performance liquid chromatography (HPLC) techniques. Samples were analyzed using the method of Bidigare et al. (2005) on an Agilent 1100 series HPLC. Samples were calculated based upon instrument response and retention times that were standardized annually with pigment standards obtained from Danish Hydraulic Institute.</p>
<p>Samples for bacterial abundance were collected in 50ml Falcon tubes then preserved with 0.2μm filtered formalin and stored at -80 °C. Direct counts of DAPI (4,6-Diaminino-2-phenylidole) stained cells were conducted using an epifluorscence microscope to determine abundance (Knap et al., 1996).</p>
<p>Salinity samples were collected in 250 ml borosilicate glass bottles (Ocean Scientific, UK) and analyzed using a Guildline Autosal 8400B. The salinometer were calibrated with standard seawater provided by Ocean Scientific, UK. Salinity was calculated based on the mean sample conductivity ratio from two separate measurements averaged over 5 seconds and computed according to the 1978 definition of Practical salinity (UNESCO, 1978). The precision of replicate samples was typically less than 0.001 psu.</p>
<p>Dissolved calcium samples were analyzed using a titration system developed by J. Ballard and Dr. T. Martz at SIO. Samples were collected in 100 ml plastic bottles. The dissolved calcium concentration was determined by EGTA titration with Zn-zincon as an indirect photometric indicator (Anfält and Granéli, 1976) using a custom photometric cell with a white LED, 620 nm filter, and photodiode. The voltage of the cell was monitored with Labview software and a 24-bit analog to digital converter (NI-9219). In the first step, 1 M borate buffer was added to 25 g of sample and diluted 10 fold. Zincon indicator (0.1%, 1ml) and equimolar Zn-EGTA (0.01 M, 2.5ml) were then added prior to an EGTA (0.02 M) gravimetric addition (~11 g) and software controlled volumetric additions (~0.1 ml).&nbsp; Accuracy and precision of IAPSO standard seawater was in the range of 2-5 mol kg-1.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1416670 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1416670
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1416518 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1416518
onGoing
Rodney J. Johnson
Bermuda Institute of Ocean Sciences
441-297-1880
7 Biological Station
St. Georges
GE 01
Bermuda
rod.johnson@bios.edu
pointOfContact
Andreas Andersson
University of California-San Diego Scripps
858-822-2486
Scripps Institution of Oceanography 9500 Gilman Dr. #0244
La Jolla
CA
92093-0244
USA
aandersson@ucsd.edu
pointOfContact
asNeeded
Unknown
depth
pressure
temperature
oxygen
CO2
alkalinity
Nitrate_nitrite
nitrite
phosphate
sillicate
TOC
TON
POC
PON
bacteria
pig1
pig2
pig3
pig4
pig5
pig6
pig7
pig8
pig9
pig10
pig11
pig12
pig13
pig14
pig15
pig16
pig17
pig18
pig19
pig20
pig21
Prochlorococcus
Synechococcus
Picoeukaryotes
Nanoeukaryotes
Calcium
CTD_salinity
salinity
Sample_id
Station_number
YYYYMMDD_in
dec_year_in
dec_day_in
Lat_in
Long_in
quality_flag
hhmm_in
ISO_DateTime_UTC
cruise_type
cruise_no
cast_no
niskin_no
Guildline Autosal 8400B
SeaBird 9/11 CTD
Exeter Analytical Elemental Analyzer
Li-Cor 7000
VINDTA3C (Marianda Inc)
Niskin bottle
SEAL AutoAnalyzer III
Automated Winkler titration system
theme
None, User defined
depth
water pressure
water temperature at measurement depth
dissolved Oxygen
dissolved inorganic Carbon
total alkalinity (TA)
nitrate plus nitrite
Nitrite
reactive phosphorus (PO4)
Silicate, Si(OH)4, silicic acid
total organic Carbon
total organic Nitrogen
particulate organic Carbon (POC)
particulate organic nitrogen
bacterial abundance
chlorophyll c3
pigment concentration
No BCO-DMO term
peridinin
19-prime-butanoyloxyfucoxanthin
19-prime-hexanoyloxyfucoxanthin
prasinoxanthin
diadinoxanthin
alloxanthin
diatoxanthin
zeaxanthin
chlorophyll b
chlorophyll a
carotene
lutein
prochlorococcus abundance
synechococcus abundance
pico_euks
nano eukaryotic phytoplankton
Calcium
salinity from CTD
salinity from water bottle samples
sample identification
station
date
year_decimal
day_gmt
latitude
longitude
flag
time of day
ISO_DateTime_UTC
cruise name
Cruise identfier
cast
bottle number
featureType
BCO-DMO Standard Parameters
Autosal salinometer
CTD Sea-Bird 911
Elemental Analyzer
LI-COR LI-7000 Gas Analyzer
MARIANDA VINDTA 3C total inorganic carbon and titration alkalinity analyser
Niskin bottle
Seal Analytical AutoAnalyser 3HR
Titrator
instrument
BCO-DMO Standard Instruments
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Collaborative Research Ocean Acidification: Establishing the links between offshore biogeochemistry, coral reef metabolism and acidification
https://osprey.bco-dmo.org/project/737955
Collaborative Research Ocean Acidification: Establishing the links between offshore biogeochemistry, coral reef metabolism and acidification
<p>NSF abstract:</p>
<p>Time-series observations from the Atlantic and Pacific Oceans have revealed indisputable evidence of long-term acidification of open-ocean surface seawater due to uptake of anthropogenic carbon dioxide from the atmosphere. Concurrent evidence of negative effects of acidification on the production and preservation of calcium carbonate have fueled concern about the potential consequences to coral reefs. Although long-term acidification in coral reef environments in general has not been observed, seawater acidification rates on the Bermuda coral reef platform between 2007-2012 have been found to be three times faster than the long-term (1983-2012) acidification rate observed at a nearby offshore open-ocean time-series station. The investigators on this project believe that they now understand how this happens and have designed a study to confirm or refute their ideas. Specifically they believe that the observed changes in 2007-2012 are attributable to a recent shift in reef metabolic processes associated with an increase in net reef calcification and heterotrophy. The evidence they have in-hand suggests that these changes have been fueled by an increase in food supply to the reef as a result of increased offshore primary production seemingly linked to the state of the North Atlantic Oscillation (NAO), a periodic back-and-forth shifting of atmospheric pressure differences between the subpolar and the subtropical North Atlantic. In this project, by collecting an extensive set of physical, chemical, and biological data extending from the reef platform at Bermuda to the offshore open-water time-series station, they will explore this idea.</p>
<p>The primary scientific and societal broader impacts of this project will be its relevance to advancing current understanding of the effects of ocean acidification on coral reefs. Robust prediction of future effects on this ecosystem requires knowledge of the main drivers of reef biogeochemical processes and of local seawater acidification. Secondly, the project will support the education and research activities of both graduate and undergraduate students working as members of the research team, and foster community educational outreach through the Ocean Discovery Institute in San Diego and the Ocean Academy in Bermuda to engage students from underrepresented minorities.</p>
<p>The central hypothesis of this research is that during years of negative winter NAO, intensified mixing and increased nutrient supply enhance offshore production leading to coral reef calcification and reef heterotrophy, thus intensifying the local seawater acidification on the reef. To address this hypothesis, the team will measure and characterize inshore seawater biogeochemical properties (temperature, salinity, dissolved inorganic carbon, total alkalinity, calcium, partial pressure of carbon dioxide, inorganic nutrients, particulate organic carbon and nitrogen, total organic carbon and nitrogen, phytoplankton pigments, and bacterial abundance) on a monthly interval across the Bermuda coral reef. These data will be evaluated in concert with data collected as part of the Bermuda-Atlantic Time-Series and Hydrostation S programs and along inshore-offshore transects. It is expected that this approach will further the understanding of how seawater biogeochemical properties, including seawater carbonate chemistry, vary over time and space on the Bermuda coral reef, and identify the main drivers of these variations. It will specifically address the coupling between offshore and inshore biogeochemical processes and how they are linked to larger-scale oceanographic and climatic forcings, such as the NAO. It also addresses how reef biogeochemical processes may alleviate or exacerbate ocean acidification, and whether these changes are important to reef metabolism in the context of other forcings such as light, nutrients, and food availability.</p>
<p>Based on the findings of the <a href="https://www.bco-dmo.org/project/2190">BEACON</a> project, and especially the results published in Andersson et al. (Nature Climate Change, 4, 56-61, 2014) and Yeakel et al. (PNAS, 112, 14512-14517, 2015), BEACON II (<a href="https://www.bco-dmo.org/project/737955">https://www.bco-dmo.org/project/737955</a>) aims to assess the links between offshore and reef biogeochemistry by continuing and expanding on the physical and chemical measurements on the Bermuda coral reef and in the surrounding Sargasso Sea.</p>
BEACON II
largerWorkCitation
project
eng; USA
oceans
-64.843
-63.971
31.579
32.975
2014-08-13
2018-07-21
Bermuda
0
BCO-DMO catalogue of parameters from Seawater biogeochemistry inshore and offshore the Bermuda coral reef from the Bermuda coral reef platform and adjacent Sargasso Sea extending to Bermuda Atlantic Time Series-station from 2014-2018
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/785659.rdf
Name: depth
Units: meters (m)
Description: <p>water depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/785660.rdf
Name: pressure
Units: bar
Description: <p>CTD pressure</p>
http://lod.bco-dmo.org/id/dataset-parameter/785661.rdf
Name: temperature
Units: degrees Celsius
Description: <p>water temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/785662.rdf
Name: oxygen
Units: micromole per kilogram (micromol kg-1)
Description: <p>dissolved oxygen</p>
http://lod.bco-dmo.org/id/dataset-parameter/785663.rdf
Name: CO2
Units: micromole per kilogram (micromol kg-1)
Description: <p>dissolved inorganic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/785664.rdf
Name: alkalinity
Units: micromole per kilogram (micromol kg-1)
Description: <p>total alkalinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/785665.rdf
Name: Nitrate_nitrite
Units: micromole per kilogram (micromol kg-1)
Description: <p>dissolved nitrate+nitrite (LOD=0.03) reported as zero if < LOD</p>
http://lod.bco-dmo.org/id/dataset-parameter/785666.rdf
Name: nitrite
Units: micromole per kilogram (micromol kg-1)
Description: <p>dissolved nitrite (LOD=0.01) reported as zero if < LOD</p>
http://lod.bco-dmo.org/id/dataset-parameter/785667.rdf
Name: phosphate
Units: micromole per kilogram (micromol kg-1)
Description: <p>dissolved phosphate (LOD=0.02) reported as zero if < LOD+B48</p>
http://lod.bco-dmo.org/id/dataset-parameter/785668.rdf
Name: sillicate
Units: micromole per kilogram (micromol kg-1)
Description: <p>dissolved silicate</p>
http://lod.bco-dmo.org/id/dataset-parameter/785669.rdf
Name: TOC
Units: micromole per kilogram (micromol kg-1)
Description: <p>total organic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/785670.rdf
Name: TON
Units: micromole per kilogram (micromol kg-1)
Description: <p>total organic nitrogen</p>
http://lod.bco-dmo.org/id/dataset-parameter/785671.rdf
Name: POC
Units: microgram per kilogram (micro g kg-1)
Description: <p>particulate organic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/785672.rdf
Name: PON
Units: microgram per kilogram (micro g kg-1)
Description: <p>particulate organic nitrogen</p>
http://lod.bco-dmo.org/id/dataset-parameter/785673.rdf
Name: bacteria
Units: cells x10^8 per kilogram (cellsX10^8 kg-1)
Description: <p>total bacterial cells</p>
http://lod.bco-dmo.org/id/dataset-parameter/785674.rdf
Name: pig1
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- chlorophyll C3</p>
http://lod.bco-dmo.org/id/dataset-parameter/785675.rdf
Name: pig2
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- chlidea</p>
http://lod.bco-dmo.org/id/dataset-parameter/785676.rdf
Name: pig3
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- chlorophyll c1+c2</p>
http://lod.bco-dmo.org/id/dataset-parameter/785677.rdf
Name: pig4
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- peridinon</p>
http://lod.bco-dmo.org/id/dataset-parameter/785678.rdf
Name: pig5
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- 19 butanoyloxyfucoxanthin</p>
http://lod.bco-dmo.org/id/dataset-parameter/785679.rdf
Name: pig6
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- fucoxanthin</p>
http://lod.bco-dmo.org/id/dataset-parameter/785680.rdf
Name: pig7
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- 19 hexanoyloxyfucoxanthin</p>
http://lod.bco-dmo.org/id/dataset-parameter/785681.rdf
Name: pig8
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- prasinoxanthin</p>
http://lod.bco-dmo.org/id/dataset-parameter/785682.rdf
Name: pig9
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- diadinoxanthin</p>
http://lod.bco-dmo.org/id/dataset-parameter/785683.rdf
Name: pig10
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- alloxanthin</p>
http://lod.bco-dmo.org/id/dataset-parameter/785684.rdf
Name: pig11
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- diatoxanthin</p>
http://lod.bco-dmo.org/id/dataset-parameter/785685.rdf
Name: pig12
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- zeaxanthin+lutein</p>
http://lod.bco-dmo.org/id/dataset-parameter/785686.rdf
Name: pig13
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- chlorophyll b</p>
http://lod.bco-dmo.org/id/dataset-parameter/785687.rdf
Name: pig14
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- chlorophyll a</p>
http://lod.bco-dmo.org/id/dataset-parameter/785688.rdf
Name: pig15
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- a+b carotene</p>
http://lod.bco-dmo.org/id/dataset-parameter/785689.rdf
Name: pig16
Units: nanograms per kilogram (ng kg-1)
Description: <p>Turner chlorophyll a</p>
http://lod.bco-dmo.org/id/dataset-parameter/785690.rdf
Name: pig17
Units: nanograms per kilogram (ng kg-1)
Description: <p>Turner phaeopigments</p>
http://lod.bco-dmo.org/id/dataset-parameter/785691.rdf
Name: pig18
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- lutein</p>
http://lod.bco-dmo.org/id/dataset-parameter/785692.rdf
Name: pig19
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- zeaxanthin</p>
http://lod.bco-dmo.org/id/dataset-parameter/785693.rdf
Name: pig20
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- a-carotene</p>
http://lod.bco-dmo.org/id/dataset-parameter/785694.rdf
Name: pig21
Units: nanograms per kilogram (ng kg-1)
Description: <p>HPLC- b-carotene</p>
http://lod.bco-dmo.org/id/dataset-parameter/785695.rdf
Name: Prochlorococcus
Units: cells per mililiter (cells ml-1)
Description: <p>Flow cytometer total counts of Prochlorococcus</p>
http://lod.bco-dmo.org/id/dataset-parameter/785696.rdf
Name: Synechococcus
Units: cells per mililiter (cells ml-1)
Description: <p>Flow cytometer total counts of Synechococcus</p>
http://lod.bco-dmo.org/id/dataset-parameter/785697.rdf
Name: Picoeukaryotes
Units: cells per mililiter (cells ml-1)
Description: <p>Flow cytometer total counts of Picoeukaryotes</p>
http://lod.bco-dmo.org/id/dataset-parameter/785698.rdf
Name: Nanoeukaryotes
Units: cells per mililiter (cells ml-1)
Description: <p>Flow cytometer total counts of Nanoeukaryotes</p>
http://lod.bco-dmo.org/id/dataset-parameter/785699.rdf
Name: Calcium
Units: micromole per kilogram (micromol kg-1)
Description: <p>dissolved calcium</p>
http://lod.bco-dmo.org/id/dataset-parameter/785700.rdf
Name: CTD_salinity
Units: psu
Description: <p>CTD salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/785701.rdf
Name: salinity
Units: psu
Description: <p>bottle salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/785702.rdf
Name: Sample_id
Units: unitless
Description: <p>refers to a unique 8 digit Nisken ID following the format: !###$$$@@<br />
where;<br />
!=Cruise type;<br />
### = Cruise number;<br />
$$$ = Cast number;<br />
@@ = Niskin number</p>
http://lod.bco-dmo.org/id/dataset-parameter/785703.rdf
Name: Station_number
Units: unitless
Description: <p>Station_number refers to nominal inshore and offshore station.Total of 7 offshore stations which are:<br />
1= Sea Buoy (0 km offshore);<br />
2= 5km offshore;<br />
3= 10km offshore;<br />
4= 15km offshore;<br />
5= Hydrostation 'S' (~20km offshore);<br />
6= BATS Spatial Station #2 ( ~ 50km offshore);<br />
7= BATS (~ 80km offshore);</p>
<p>Total of 11 inshore stations which are:<br />
1= Crescent Reef.<br />
2= Dockyard<br />
3= Hog Breaker;<br />
4= Mid-Platform;<br />
5= North Channel;<br />
6= Tynes Bay;<br />
7= TT2;<br />
8= TT4;<br />
9= TT6;<br />
10= TT7;<br />
11= TT8</p>
http://lod.bco-dmo.org/id/dataset-parameter/785704.rdf
Name: YYYYMMDD_in
Units: unitless
Description: <p>date in GMT following YYYYMMDD format</p>
http://lod.bco-dmo.org/id/dataset-parameter/785705.rdf
Name: dec_year_in
Units: unitless
Description: <p>decimal year in GMT</p>
http://lod.bco-dmo.org/id/dataset-parameter/785706.rdf
Name: dec_day_in
Units: unitless
Description: <p>decimal day in GMT</p>
http://lod.bco-dmo.org/id/dataset-parameter/785707.rdf
Name: Lat_in
Units: decimal degrees
Description: <p>latitude with positive values indicating North</p>
http://lod.bco-dmo.org/id/dataset-parameter/785708.rdf
Name: Long_in
Units: decimal degrees
Description: <p>longitude with negative values indicating West</p>
http://lod.bco-dmo.org/id/dataset-parameter/785709.rdf
Name: quality_flag
Units: unitless
Description: <p>quality flags following the WOCE convention</p>
http://lod.bco-dmo.org/id/dataset-parameter/785710.rdf
Name: hhmm_in
Units: unitless
Description: <p>time in four digit hhmm format</p>
http://lod.bco-dmo.org/id/dataset-parameter/785711.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time following ISO8601 conventions</p>
http://lod.bco-dmo.org/id/dataset-parameter/785712.rdf
Name: cruise_type
Units: unitless
Description: <p>type of cruise; 7= Offshore cruise R/V Atlantic Explorer; 8= Inshore small boat survey.</p>
http://lod.bco-dmo.org/id/dataset-parameter/785713.rdf
Name: cruise_no
Units: unitless
Description: <p>cruise number</p>
http://lod.bco-dmo.org/id/dataset-parameter/785714.rdf
Name: cast_no
Units: unitless
Description: <p>cast number</p>
http://lod.bco-dmo.org/id/dataset-parameter/785715.rdf
Name: niskin_no
Units: unitless
Description: <p>niskin number</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
https://osprey.bco-dmo.org/dataset/785658/data/download
download
onLine
dataset
<p>Samples for dissolved oxygen were collected in 140 ml Pyrex iodine flasks, stored in a dark location and the necks of the flasks were sealed with seawater. Samples were analyzed after 6-8 hours, based on the Strickland and Parsons (1968) modification of the Winkler (1888) method. Analysis was performed on an automated titration system using an UV light endpoint detection system as designed by the late Robert Williams of SIO. Prior to running the samples, a series of standards (6-8) and blanks (3-4) were run for determination of the thiosulphate normality value. Precision was typically &lt;0.5 µmol kg-1.&nbsp;&nbsp;</p>
<p>TA and DIC samples were collected according to standard protocols (Dickson et al., 2007) using 250-mL Kimax brand glass sample bottles. Samples were immediately poisoned with 100 μL saturated solution of HgCl2. DIC was analyzed coulometrically using a UIC CM5011 CO2 coulometer combined with a VINDTA3C (Marianda Inc) or SOMMA system, alternatively based on infrared absorption using an AIRICA (Marianda, Inc) and a Li-Cor 7000 as the detector. TA was analyzed based on potentiometric acid titrations (∼0.1 N HCl) using a VINDTA3S (Marianda Inc). Performance and precision of the instruments were regularly verified using certified reference material (CRM) prepared by A. Dickson at Scripps Institution of Oceanography (SIO). The accuracy and precision of replicate CRMs on any given day of analyses were typically in the range of ±2–4 μmol kg−1 for both TA and DIC.</p>
<p>Samples for nitrate+nitrite, nitrite, phosphate, silicic acid and ammonia were filtered through 0.8 µm Nuclepore filters then frozen (-20°C) in HDPE bottles until analysis. Samples were analyzed on a four channel SEAL AutoAnalyzer III using modified methods from Knap et al. (1996).&nbsp; &nbsp;Analytical precision for triplicate nutrient measurements was approximately 0.03-0.05 µmoles kg-1. Certified standards from Ocean Scientific International were analyzed on a regular interval to maintain data quality.</p>
<p>Particulate Organic Carbon and Nitrogen (POC/PON) samples (2L) were filtered onto pre-combusted (450ºC, 5 hours) Whatman GF/F glass fiber filters (nominal pore size 0.7µm), and stored at -20°C.&nbsp; Dried acidified samples were be combusted at 980 ºC on an Exeter Analytical Elemental Analyzer as described in Knap et al. (1996). Field blanks and acetanilide standards were run with each batch of samples.&nbsp;</p>
<p>Phytoplankton pigment samples (4L) were filtered onto 25mm Whatman GF/F glass fiber filters, frozen in liquid nitrogen, and analyzed by both standard fluorometric and high performance liquid chromatography (HPLC) techniques. Samples were analyzed using the method of Bidigare et al. (2005) on an Agilent 1100 series HPLC. Samples were calculated based upon instrument response and retention times that were standardized annually with pigment standards obtained from Danish Hydraulic Institute.</p>
<p>Samples for bacterial abundance were collected in 50ml Falcon tubes then preserved with 0.2μm filtered formalin and stored at -80 °C. Direct counts of DAPI (4,6-Diaminino-2-phenylidole) stained cells were conducted using an epifluorscence microscope to determine abundance (Knap et al., 1996).</p>
<p>Salinity samples were collected in 250 ml borosilicate glass bottles (Ocean Scientific, UK) and analyzed using a Guildline Autosal 8400B. The salinometer were calibrated with standard seawater provided by Ocean Scientific, UK. Salinity was calculated based on the mean sample conductivity ratio from two separate measurements averaged over 5 seconds and computed according to the 1978 definition of Practical salinity (UNESCO, 1978). The precision of replicate samples was typically less than 0.001 psu.</p>
<p>Dissolved calcium samples were analyzed using a titration system developed by J. Ballard and Dr. T. Martz at SIO. Samples were collected in 100 ml plastic bottles. The dissolved calcium concentration was determined by EGTA titration with Zn-zincon as an indirect photometric indicator (Anfält and Granéli, 1976) using a custom photometric cell with a white LED, 620 nm filter, and photodiode. The voltage of the cell was monitored with Labview software and a 24-bit analog to digital converter (NI-9219). In the first step, 1 M borate buffer was added to 25 g of sample and diluted 10 fold. Zincon indicator (0.1%, 1ml) and equimolar Zn-EGTA (0.01 M, 2.5ml) were then added prior to an EGTA (0.02 M) gravimetric addition (~11 g) and software controlled volumetric additions (~0.1 ml).&nbsp; Accuracy and precision of IAPSO standard seawater was in the range of 2-5 mol kg-1.</p>
Specified by the Principal Investigator(s)
<p>BCO-DMO Processing Notes:<br />
-&nbsp;added conventional header with dataset name, PI name, version date<br />
-&nbsp;modified parameter names to conform with BCO-DMO naming conventions<br />
- prepended&nbsp;hhmm_in field with zeros when number of digits was less than 4.<br />
- combined YYYYMMDD_in and hhmm_in fields to generate ISO_DateTime_UTC field.<br />
- split Sample_id field to generate cruise_type, cruise_no, cast_no, and niskin_no fields.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Guildline Autosal 8400B
Guildline Autosal 8400B
PI Supplied Instrument Name: Guildline Autosal 8400B PI Supplied Instrument Description:Guildline Autosal 8400B for salinity. The precision of replicate samples was typically less than 0.001 psu. Instrument Name: Autosal salinometer Instrument Short Name:salinometer Instrument Description: The salinometer is an instrument for measuring the salinity of a water sample. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB30/
SeaBird 9/11 CTD
SeaBird 9/11 CTD
PI Supplied Instrument Name: SeaBird 9/11 CTD PI Supplied Instrument Description:SeaBird 9/11 CTD equipped with dual SBE-03 temperature sensors, SBE-04 conductivity sensors, and SBE45 dissolved oxygen sensors. Auxiliary sensors include Chelsea flurometer, Wetlabs fluorometer, Wetlabs, transmissometer, Biospherical PAR sensor. Discrete samples collected din 12l Ocean Test Equipment bottles. Instrument Name: CTD Sea-Bird 911 Instrument Short Name:CTD SBE 911 Instrument Description: The Sea-Bird SBE 911 is a type of CTD instrument package. The SBE 911 includes the SBE 9 Underwater Unit and the SBE 11 Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 and SBE 11 is called a SBE 911. The SBE 9 uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 and SBE 4). The SBE 9 CTD can be configured with auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). More information from Sea-Bird Electronics. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0035/
Exeter Analytical Elemental Analyzer
Exeter Analytical Elemental Analyzer
PI Supplied Instrument Name: Exeter Analytical Elemental Analyzer PI Supplied Instrument Description:Exeter Analytical Elemental Analyzer for POC and PON. Instrument Name: Elemental Analyzer Instrument Short Name: Instrument Description: Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/
Li-Cor 7000
Li-Cor 7000
PI Supplied Instrument Name: Li-Cor 7000 PI Supplied Instrument Description:AIRICA (Marianda, Inc) and a Li-Cor 7000 as the detector for DIC analyses. Accuracy and precision was typically Instrument Name: LI-COR LI-7000 Gas Analyzer Instrument Short Name:LI-COR LI-7000 Instrument Description: The LI-7000 gas analyzer is a differential, single source, non-dispersive, infrared gas analyzer. It has two solid state detectors, one each for CO2 and H2O, filters at 4.255 microns and 2.595 microns respectively. CO2 is measured in the range 0-3000ppm, with an accuracy of 1 percent nominally. H2O is measured in the range 0-60 mmol per mol, with an accuracy of one 1 percent. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/382/
VINDTA3C (Marianda Inc)
VINDTA3C (Marianda Inc)
PI Supplied Instrument Name: VINDTA3C (Marianda Inc) PI Supplied Instrument Description:VINDTA3C (Marianda Inc) combined with a UIC CM5011 CO2 coulometer or SOMMA system for DIC analyses. Accuracy and precision was typically Instrument Name: MARIANDA VINDTA 3C total inorganic carbon and titration alkalinity analyser Instrument Short Name:inorganic carbon and alkalinity analyser Instrument Description: The Versatile INstrument for the Determination of Total inorganic carbon and titration Alkalinity (VINDTA) 3C is a laboratory alkalinity titration system combined with an extraction unit for coulometric titration, which simultaneously determines the alkalinity and dissolved inorganic carbon content of a sample. The sample transport is performed with peristaltic pumps and acid is added to the sample using a membrane pump. No pressurizing system is required and only one gas supply (nitrogen or dry and CO2-free air) is necessary. The system uses a Metrohm Titrino 719S, an ORION-Ross pH electrode and a Metrohm reference electrode. The burette, the pipette and the analysis cell have a water jacket around them. Precision is typically +/- 1 umol/kg for TA and/or DIC in open ocean water. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0481/
Niskin bottle
Niskin bottle
PI Supplied Instrument Name: Niskin bottle PI Supplied Instrument Description:General oceanic Niskin bottle 5L Instrument Name: Niskin bottle Instrument Short Name:Niskin bottle Instrument 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. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/
SEAL AutoAnalyzer III
SEAL AutoAnalyzer III
PI Supplied Instrument Name: SEAL AutoAnalyzer III PI Supplied Instrument Description:SEAL AutoAnalyzer III for inorganic nutrients. Instrument Name: Seal Analytical AutoAnalyser 3HR Instrument Short Name:Seal Analytical AutoAnalyser 3HR Instrument Description: A fully automated Segmented Flow Analysis (SFA) system, ideal for water and seawater analysis. It comprises a modular system which integrates an autosampler, peristaltic pump, chemistry manifold and detector. The sample and reagents are pumped continuously through the chemistry manifold, and air bubbles are introduced at regular intervals forming reaction segments which are mixed using glass coils. The AA3 uses segmented flow analysis principles to reduce inter-sample dispersion, and can analyse up to 100 samples per hour using stable LED light sources.
Automated Winkler titration system
Automated Winkler titration system
PI Supplied Instrument Name: Automated Winkler titration system PI Supplied Instrument Description:Automated Winkler titration system using an UV light endpoint detection system as designed by the late Robert Williams of SIO. Precision was typically Instrument Name: Titrator Instrument Short Name:Titrator Instrument Description: Titrators are instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/