http://lod.bco-dmo.org/id/dataset/738744
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
2018-06-18
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Nutrients and iron in shipboard aerosol and rain samples collected during R/V Hugh R. Sharp cruise HRS1414 in the Mid-Atlantic Bight and northern South-Atlantic Bight from July to August of 2014 (DANCE project)
2018-06-18
publication
2018-06-18
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-08-15
publication
https://doi.org/10.1575/1912/bco-dmo.738744.1
Peter N. Sedwick
Old Dominion University
principalInvestigator
Margaret Mulholland
Old Dominion University
principalInvestigator
Raymond Najjar
Pennsylvania State University
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: Sedwick, P., Mulholland, M., Najjar, R. (2018) Nutrients and iron in shipboard aerosol and rain samples collected during R/V Hugh R. Sharp cruise HRS1414 in the Mid-Atlantic Bight and northern South-Atlantic Bight from July to August of 2014 (DANCE project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2018-06-18 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.738744.1 [access date]
Methods and Sampling: Aerosol sample collection: Aerosols were collected on cellulose filters using a Tisch Series 235 high-volume (~1 m3 air min-1) aerosol sampler equipped with a cascade impactor designed for the separation of coarse (>1 µm) and fine (<1 µm) aerosol fractions. The sampler was mounted on a platform atop the ship’s wheelhouse as far forward as possible. Relative wind speed and direction were monitored during aerosol sample collection, and the sampler was operated only when the ship was steaming into the prevailing wind, in an effort to avoid contamination from the ship’s exhaust and superstructure. The cascade impactor was loaded with Whatman 41 cellulose filters that had been pre-cleaned at Old Dominion University using 0.1 N and 0.5 N hydrochloric acid, following a procedure modified from Baker et al. [2006]. Six filters (five 25 cm x 25 cm slotted sheets and one 20.3 cm x 25.4 cm backing sheet) were used for the collection of each aerosol sample. Air flow rates were calculated using manufacturer-provided flow conversion tables and the pressure decrease across the filters, which was measured at the start and end of sample collection using a handheld digital manometer (Dwyer Series). The total air volume sampled was estimated from the period of sample collection and the average value of the initial and final flow rates.
Aerosol sample processing: Immediately following collection, the aerosol-laden filters were unloaded and subsampled within a Class-100 clean air bench. Fixed portions of the aerosol-laden cellulose filters corresponding to each aerosol size fraction (<1 µm and >1 µm) were transferred into 47 mm diameter perfluoroalkoxy alkane filter funnel assemblies (Savillex) loaded with acid-cleaned 0.4 µm polycarbonate filter membranes, and leached with 750 ml of 18.2 MΩ-cm resistivity deionized water (Barnstead Nanopure), in a flow-through protocol modfied after Buck et al. [2006]. Aliquots of the leachate solutions were immediately transferred into (i) acid-cleaned 125 ml low-density polyethylene bottles (Nalgene), then acidified with 500 μl 6N ultrapure hydrochloric acid (Fisher Chemical, Optima), for post-cruise analysis of soluble aerosol iron, and (ii) 60 mL polypropylene tubes (Falcon) for shipboard analysis of soluble aerosol nitrate+nitrite, phosphate and ammonium. In addition, separate portions of the aerosol-laden cellulose filters corresponding to each aerosol size fraction (<1 µm and >1 µm) were stored in pre-cleaned ziploc polyethylene bags for microwave acid digestion at Old Dominion University. The microwave acid digestion procedure was adapted from Morton et al. [2013], with the resulting digest solutions evaporated to near dryness and then diluted with 20 mL of 1% ultrapure nitric acid (Fisher Chemical, Optima).
Rainwater sample collection: Two methods were used to collect the rain samples at sea. Samples Rain-01 and Rain-02 were collected in two acid-cleaned 2 L wide-mouth fluorinated high-density polyethylene bottles (Nalgene) mounted inside a polyethylene bucket, using an N-Con Systems automated rain sampler. Samples Rain-03, Rain-04 and Rain-05 were manually collected using an acid-cleaned high-density polyethylene funnel (Nalgene) connected by a Teflon collar to an acid-cleaned 2 L low-density polyethylene bottle (Nalgene). Both sample collectors were mounted on a platform atop the ship’s wheelhouse as far forward as possible, with samples collected whilst the ship was steaming into the prevailing wind, in an effort to avoid contamination from the ship’s exhaust and superstructure. The ODU Rain Composite combines samples collected on the Old Dominion University campus during summer 2014 using the manual funnel sampling method.
Rainwater sample processing: Immediately following collection, rainwater sample containers were capped and transferred to a shipboard Class-100 clean air bench for processing. From each sample, aliquots were transferred into (i) 60 mL polypropylene tubes (Falcon), which were frozen for post cruise analysis of nitrate+nitrite, phosphate and ammonium, and, when there was sufficient sample volume (ii) acid-cleaned 125 ml low-density polyethylene bottles (Nalgene) and acidified to pH 1.8 with 6N ultrapure hydrochloric acid (Fisher Chemical, Optima) for post-cruise analysis of total iron (more strictly, total acid-labile iron). In addition, if the volume of sample was sufficient, the rainwater was filtered through an acid-cleaned 0.4 µm polycarbonate membrane using a 47 mm diameter perfluoroalkoxy alkane filter funnel assembly (Savillex), and the filtrate transferred into an acid-cleaned 125 ml low-density polyethylene bottles (Nalgene) and acidified to pH 1.8 with 6N ultrapure hydrochloric acid (Fisher Chemical, Optima) for post-cruise analysis of dissolved iron.
DFe and TFe: Dissolved iron and total iron was determined in aerosol leachate solutions (DFe), aerosol digest solutions (TFe), filtered rainwater (DFe) and unfiltered rainwater (TFe, or more strictly, total acid-labile iron) were determined at Old Dominion University using a ThermoFisher Element2 high-resolution inductively-coupled plasma mass spectrometer (HR-ICP-MS). Sample solutions were introduced into the ICP-MS without preconcentration, and quantified using matrix-matched external standard solutions prepared with SPEX CertiPrep Claritas PPT grade standards. An indium internal standard was used to correct for instrumental drift. Analytical limits of detection are estimated as 0.57 nM for DFe and for TFe in ulfiltered rainwater, and 53 nM for TFe in the aerosol digest solutions. The values presented for DFe and TFe in samples represent concentrations after subtracting the concentrations of the corresponding field blanks (Rain-Sampler-Blank, Rain-Funnel-Blank, or Aer-Blank). Atmospheric loadings of soluble aerosol iron (Sol Aer Fe) and total aerosol iron (Tot Aer Fe) were calculated from DFe in aerosol leachates and TFe in aerosol digest solutions, respectively, and the total air volume sampled in each case, after correcting for the fraction of the active filter area that was leached (for DFe) or digested (for TFe).
NO3+NO2: Dissolved nitrate plus nitrite was determined in aerosol leachate solutions and rainwater with an Astoria Pacific nutrient autoanalyzer, using standard colorimetric methods with an estimated detection limit of 0.14 µM (Parsons et al., 1984; Price and Harrison, 1987). Atmospheric loadings of soluble aerosol nitrate plus nitrite (Sol Aer NO3+NO2) were calculated from NO3+NO2 in aerosol leachates and the total air volume sampled, after correcting for the fraction of the active filter area that was leached.
PO4: Dissolved phosphate was determined in aerosol leachate solutions and rainwater with an Astoria Pacific nutrient autoanalyzer, using standard colorimetric methods with an estimated detection limit of 0.03 µM (Parsons et al., 1984; Price and Harrison, 1987). Atmospheric loadings of soluble aerosol phosphate (Sol Aer PO4) were calculated from PO4 in aerosol leachates and the total air volume sampled, after correcting for the fraction of the active filter area that was leached.
NH4: Dissolved ammonium was determined in aerosol leachate solutions and rainwater using the manual orthophthaldialdehyde method (Holmes et al., 1999), with an estimated detection limit of 10 nM. Atmospheric loadings of soluble aerosol ammonium (Sol Aer NH4) were calculated from NH4 in aerosol leachates and the total air volume sampled, after correcting for the fraction of the active filter area that was leached.
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1260574 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1260574
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1260454 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1260454
completed
Peter N. Sedwick
Old Dominion University
757-683-4936
Ocean, Earth & Atmospheric Sciences 4600 Elkhorn Ave.
Norfolk
VA
23529
USA
psedwick@odu.edu
pointOfContact
Margaret Mulholland
Old Dominion University
757-739-0449
Department of Ocean, Earth, and Atmospheric Sciences 4600 Elkhorn Ave.
Norfolk
VA
23529-0276
USA
mmulholl@odu.edu
pointOfContact
Raymond Najjar
Pennsylvania State University
814-863-1586
Department of Meteorology and Atmospheric Science 503 Walker Building
University Park
PA
16802
USA
rgn1@psu.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Sample_ID
Comment
Date
Duration
Start_Lat
End_Lat
Start_Long
End_Long
Air_Volume
DFe
Sol_Aer_Fe
TFe
Tot_Aer_Fe
NO3_NO2
Sol_Aer_NO3_NO2
PO4
Sol_Aer_PO4
NH4
Sol_Aer_NH4
Tisch Series 235
ThermoFisher Element2
Astoria Pacific nutrient autoanalyzer
ADS 00-120
Shimadzu RF1501
theme
None, User defined
sample identification
comments
date
time_elapsed
latitude
longitude
sample_volume
Iron
nitrate plus nitrite
reactive phosphorus (PO4)
Ammonium
featureType
BCO-DMO Standard Parameters
Aerosol Sampler
Inductively Coupled Plasma Mass Spectrometer
Nutrient Autoanalyzer
Precipitation Sampler
Spectrophotometer
instrument
BCO-DMO Standard Instruments
HRS1414
service
Deployment Activity
Offshore Mid-Atlantic Bight and northern South-Atlantic Bight
place
Locations
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: Impacts of atmospheric nitrogen deposition on the biogeochemistry of oligotrophic coastal waters
https://osprey.bco-dmo.org/project/726328
Collaborative Research: Impacts of atmospheric nitrogen deposition on the biogeochemistry of oligotrophic coastal waters
<p>NSF abstract:</p>
<p>Deposition of atmospheric nitrogen provides reactive nitrogen species that influence primary production in nitrogen-limited regions. Although it is generally assumed that these species in precipitation contributes substantially to anthropogenic nitrogen loadings in many coastal marine systems, its biological impact remains poorly understood. Scientists from Pennsylvania State University, William & Mary College, and Old Dominion University will carry out a process-oriented field and modeling effort to test the hypothesis that deposits of wet atmospheric nitrogen (i.e., precipitation) stimulate primary productivity and accumulation of algal biomass in coastal waters following summer storms and this effect exceeds the associated biogeochemical responses to wind-induced mixing and increased stratification caused by surface freshening in oligotrophic coastal waters of the eastern United States. To attain their goal, the researchers would perform a Lagrangian field experiment during the summer months in coastal waters located between Delaware Bay and the coastal Carolinas to determine the response of surface-layer biogeochemistry and biology to precipitation events, which will be identified and intercepted using radar and satellite data. As regards the modeling effort, a 1-D upper ocean mixing model and a 1-D biogeochemical upper-ocean will be calibrated by assimilating the field data obtained a part of the study using the adjoint method. The hypothesis will be tested using sensitivity studies with the calibrated model combined with in-situ data and results from the incubation experiments. Lastly, to provide regional and historical context for the field measurements and the associated 1-D modeling, linked regional atmospheric-oceanic biogeochemical modeling will be conducted.</p>
<p>Broader Impacts. Results from the study would be incorporated into class lectures for graduate courses on marine policy and marine biogeochemistry. One graduate student from Pennsylvania State University, one graduate student from the College of William and Mary, and one graduate and one undergraduate student from Old Dominion University would be supported and trained as part of this project.</p>
DANCE
largerWorkCitation
project
eng; USA
oceans
Offshore Mid-Atlantic Bight and northern South-Atlantic Bight
-74.3724
-70.0543
33.4254
38.5334
2014-08-02
2014-08-14
Offshore Mid-Atlantic Bight and northern South-Atlantic Bight between latitudes 31.60°N and 38.89°N, and longitudes 71.09°W and 75.16°W
0
BCO-DMO catalogue of parameters from Nutrients and iron in shipboard aerosol and rain samples collected during R/V Hugh R. Sharp cruise HRS1414 in the Mid-Atlantic Bight and northern South-Atlantic Bight from July to August of 2014 (DANCE 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
http://lod.bco-dmo.org/id/dataset-parameter/738783.rdf
Name: Sample_ID
Units: unitless
Description: <p>unique identifier for each sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/738784.rdf
Name: Comment
Units: unitless
Description: <p>sample comment</p>
http://lod.bco-dmo.org/id/dataset-parameter/738785.rdf
Name: Date
Units: unitless
Description: <p>local date (month/day/year) of collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/738786.rdf
Name: Duration
Units: minutes
Description: <p>duration of sample collection (aerosols) (NA: not applicable)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738787.rdf
Name: Start_Lat
Units: decimal degrees
Description: <p>latitude at start of sample collection (NA: not applicable)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738788.rdf
Name: End_Lat
Units: decimal degrees
Description: <p>latitude at end of sample collection (NA: not applicable)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738789.rdf
Name: Start_Long
Units: decimal degrees
Description: <p>longitude at start of sample collection (NA: not applicable)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738790.rdf
Name: End_Long
Units: decimal degrees
Description: <p>longitude at end of sample collection (NA: not applicable)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738791.rdf
Name: Air_Volume
Units: meters cubed (m3)
Description: <p>volume of air filtered (aerosols) (NA: not applicable)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738792.rdf
Name: DFe
Units: nanomoles per liter (nmol/L)
Description: <p>dissolved iron concentration; (rainwater or aerosol leachate) (NA: not applicable; BDL: below detection limit)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738793.rdf
Name: Sol_Aer_Fe
Units: nanomoles per meter cubed (nmol/m3)
Description: <p>soluble aerosol iron (atmospheric loading) (ND: not determined; BDL: below detection limit)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738794.rdf
Name: TFe
Units: nanomoles per liter (nmol/L)
Description: <p>total iron concentration; (rainwater or aerosol) (ND: not determined; BDL: below detection limit)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738795.rdf
Name: Tot_Aer_Fe
Units: nanomoles per meter cubed (nmol/m3)
Description: <p>total aerosol iron; (atmospheric loading) (NA: not applicable; BDL: below detection limit)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738796.rdf
Name: NO3_NO2
Units: micromoles per liter (umol/L)
Description: <p>dissolved nitrate plus nitrite concentration (rainwater or aerosol leachate) (BDL: below detection limit)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738797.rdf
Name: Sol_Aer_NO3_NO2
Units: nanomoles per meter cubed (nmol/m3)
Description: <p>soluble aerosol nitrate plus nitrite (atmospheric loading) (NA: not applicable)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738798.rdf
Name: PO4
Units: micromoles per liter (umol/L)
Description: <p>dissolved phosphate (rainwater or aerosol leachate) (BDL: below detection limit)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738799.rdf
Name: Sol_Aer_PO4
Units: nanomoles per meter cubed (nmol/m3)
Description: <p>soluble aerosol phosphate (NA: not applicable; BDL: below detection limit)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738800.rdf
Name: NH4
Units: micromoles per liter (umol/L)
Description: <p>dissolved ammonium (rainwater or aerosol leachate)</p>
http://lod.bco-dmo.org/id/dataset-parameter/738801.rdf
Name: Sol_Aer_NH4
Units: nanomoles per meter cubed (nmol/m3)
Description: <p>soluble aerosol ammonium (NA: not applicable)</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
3303
https://darchive.mblwhoilibrary.org/bitstream/1912/24445/1/dataset-738744_shipboard-aerosol-and-rain-sample-nutrients-and-iron__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.738744.1
download
onLine
dataset
Aerosol sample collection: Aerosols were collected on cellulose filters using a Tisch Series 235 high-volume (~1 m3 air min-1) aerosol sampler equipped with a cascade impactor designed for the separation of coarse (>1 µm) and fine (<1 µm) aerosol fractions. The sampler was mounted on a platform atop the ship’s wheelhouse as far forward as possible. Relative wind speed and direction were monitored during aerosol sample collection, and the sampler was operated only when the ship was steaming into the prevailing wind, in an effort to avoid contamination from the ship’s exhaust and superstructure. The cascade impactor was loaded with Whatman 41 cellulose filters that had been pre-cleaned at Old Dominion University using 0.1 N and 0.5 N hydrochloric acid, following a procedure modified from Baker et al. [2006]. Six filters (five 25 cm x 25 cm slotted sheets and one 20.3 cm x 25.4 cm backing sheet) were used for the collection of each aerosol sample. Air flow rates were calculated using manufacturer-provided flow conversion tables and the pressure decrease across the filters, which was measured at the start and end of sample collection using a handheld digital manometer (Dwyer Series). The total air volume sampled was estimated from the period of sample collection and the average value of the initial and final flow rates.
Aerosol sample processing: Immediately following collection, the aerosol-laden filters were unloaded and subsampled within a Class-100 clean air bench. Fixed portions of the aerosol-laden cellulose filters corresponding to each aerosol size fraction (<1 µm and >1 µm) were transferred into 47 mm diameter perfluoroalkoxy alkane filter funnel assemblies (Savillex) loaded with acid-cleaned 0.4 µm polycarbonate filter membranes, and leached with 750 ml of 18.2 MΩ-cm resistivity deionized water (Barnstead Nanopure), in a flow-through protocol modfied after Buck et al. [2006]. Aliquots of the leachate solutions were immediately transferred into (i) acid-cleaned 125 ml low-density polyethylene bottles (Nalgene), then acidified with 500 μl 6N ultrapure hydrochloric acid (Fisher Chemical, Optima), for post-cruise analysis of soluble aerosol iron, and (ii) 60 mL polypropylene tubes (Falcon) for shipboard analysis of soluble aerosol nitrate+nitrite, phosphate and ammonium. In addition, separate portions of the aerosol-laden cellulose filters corresponding to each aerosol size fraction (<1 µm and >1 µm) were stored in pre-cleaned ziploc polyethylene bags for microwave acid digestion at Old Dominion University. The microwave acid digestion procedure was adapted from Morton et al. [2013], with the resulting digest solutions evaporated to near dryness and then diluted with 20 mL of 1% ultrapure nitric acid (Fisher Chemical, Optima).
Rainwater sample collection: Two methods were used to collect the rain samples at sea. Samples Rain-01 and Rain-02 were collected in two acid-cleaned 2 L wide-mouth fluorinated high-density polyethylene bottles (Nalgene) mounted inside a polyethylene bucket, using an N-Con Systems automated rain sampler. Samples Rain-03, Rain-04 and Rain-05 were manually collected using an acid-cleaned high-density polyethylene funnel (Nalgene) connected by a Teflon collar to an acid-cleaned 2 L low-density polyethylene bottle (Nalgene). Both sample collectors were mounted on a platform atop the ship’s wheelhouse as far forward as possible, with samples collected whilst the ship was steaming into the prevailing wind, in an effort to avoid contamination from the ship’s exhaust and superstructure. The ODU Rain Composite combines samples collected on the Old Dominion University campus during summer 2014 using the manual funnel sampling method.
Rainwater sample processing: Immediately following collection, rainwater sample containers were capped and transferred to a shipboard Class-100 clean air bench for processing. From each sample, aliquots were transferred into (i) 60 mL polypropylene tubes (Falcon), which were frozen for post cruise analysis of nitrate+nitrite, phosphate and ammonium, and, when there was sufficient sample volume (ii) acid-cleaned 125 ml low-density polyethylene bottles (Nalgene) and acidified to pH 1.8 with 6N ultrapure hydrochloric acid (Fisher Chemical, Optima) for post-cruise analysis of total iron (more strictly, total acid-labile iron). In addition, if the volume of sample was sufficient, the rainwater was filtered through an acid-cleaned 0.4 µm polycarbonate membrane using a 47 mm diameter perfluoroalkoxy alkane filter funnel assembly (Savillex), and the filtrate transferred into an acid-cleaned 125 ml low-density polyethylene bottles (Nalgene) and acidified to pH 1.8 with 6N ultrapure hydrochloric acid (Fisher Chemical, Optima) for post-cruise analysis of dissolved iron.
DFe and TFe: Dissolved iron and total iron was determined in aerosol leachate solutions (DFe), aerosol digest solutions (TFe), filtered rainwater (DFe) and unfiltered rainwater (TFe, or more strictly, total acid-labile iron) were determined at Old Dominion University using a ThermoFisher Element2 high-resolution inductively-coupled plasma mass spectrometer (HR-ICP-MS). Sample solutions were introduced into the ICP-MS without preconcentration, and quantified using matrix-matched external standard solutions prepared with SPEX CertiPrep Claritas PPT grade standards. An indium internal standard was used to correct for instrumental drift. Analytical limits of detection are estimated as 0.57 nM for DFe and for TFe in ulfiltered rainwater, and 53 nM for TFe in the aerosol digest solutions. The values presented for DFe and TFe in samples represent concentrations after subtracting the concentrations of the corresponding field blanks (Rain-Sampler-Blank, Rain-Funnel-Blank, or Aer-Blank). Atmospheric loadings of soluble aerosol iron (Sol Aer Fe) and total aerosol iron (Tot Aer Fe) were calculated from DFe in aerosol leachates and TFe in aerosol digest solutions, respectively, and the total air volume sampled in each case, after correcting for the fraction of the active filter area that was leached (for DFe) or digested (for TFe).
NO3+NO2: Dissolved nitrate plus nitrite was determined in aerosol leachate solutions and rainwater with an Astoria Pacific nutrient autoanalyzer, using standard colorimetric methods with an estimated detection limit of 0.14 µM (Parsons et al., 1984; Price and Harrison, 1987). Atmospheric loadings of soluble aerosol nitrate plus nitrite (Sol Aer NO3+NO2) were calculated from NO3+NO2 in aerosol leachates and the total air volume sampled, after correcting for the fraction of the active filter area that was leached.
PO4: Dissolved phosphate was determined in aerosol leachate solutions and rainwater with an Astoria Pacific nutrient autoanalyzer, using standard colorimetric methods with an estimated detection limit of 0.03 µM (Parsons et al., 1984; Price and Harrison, 1987). Atmospheric loadings of soluble aerosol phosphate (Sol Aer PO4) were calculated from PO4 in aerosol leachates and the total air volume sampled, after correcting for the fraction of the active filter area that was leached.
NH4: Dissolved ammonium was determined in aerosol leachate solutions and rainwater using the manual orthophthaldialdehyde method (Holmes et al., 1999), with an estimated detection limit of 10 nM. Atmospheric loadings of soluble aerosol ammonium (Sol Aer NH4) were calculated from NH4 in aerosol leachates and the total air volume sampled, after correcting for the fraction of the active filter area that was leached.
Specified by the Principal Investigator(s)
<p>BCO-DMO Data Manager Processing Notes:<br />
* added a conventional header with dataset name, PI name, version date<br />
* modified parameter names to conform with BCO-DMO naming conventions<br />
* mu symbol changed to micron in sample id.<br />
* comment column added and "pre-cruise" moved to comment from date column.</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
Tisch Series 235
Tisch Series 235
PI Supplied Instrument Name: Tisch Series 235 PI Supplied Instrument Description:Tisch Series 235 high-volume aerosol sampler equipped with a cascade impactor. Instrument Name: Aerosol Sampler Instrument Short Name: Instrument Description: A device that collects a sample of aerosol (dry particles or liquid droplets) from the atmosphere. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/13/
ThermoFisher Element2
ThermoFisher Element2
PI Supplied Instrument Name: ThermoFisher Element2 PI Supplied Instrument Description:Iron analysis (DFe and TFe): ThermoFisher Element2 high-resolution inductively-coupled plasma mass spectrometer. Instrument Name: Inductively Coupled Plasma Mass Spectrometer Instrument Short Name:ICP Mass Spec Instrument Description: An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB15/
Astoria Pacific nutrient autoanalyzer
Astoria Pacific nutrient autoanalyzer
PI Supplied Instrument Name: Astoria Pacific nutrient autoanalyzer PI Supplied Instrument Description:Macronutrient analysis (NO3+NO2, PO4): Astoria Pacific nutrient autoanalyzer. Instrument Name: Nutrient Autoanalyzer Instrument Short Name:Nutrient Autoanalyzer Instrument Description: Nutrient Autoanalyzer is a generic term used when specific type, make and model were not specified. In general, a Nutrient Autoanalyzer is an automated flow-thru system for doing nutrient analysis (nitrate, ammonium, orthophosphate, and silicate) on seawater samples. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB04/
ADS 00-120
ADS 00-120
PI Supplied Instrument Name: ADS 00-120 PI Supplied Instrument Description:Rain Sampler: N-CON Systems ADS 00-120 sampler Instrument Name: Precipitation Sampler Instrument Short Name:Precip_Sampler Instrument Description: A device that collects a sample of precipitation (rain, hail or snow) as it falls. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/14/
Shimadzu RF1501
Shimadzu RF1501
PI Supplied Instrument Name: Shimadzu RF1501 PI Supplied Instrument Description:Spectrofluorophotometer (NH4): Shimadzu RF1501. Instrument Name: Spectrophotometer Instrument Short Name:Spectrophotometer Instrument Description: An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB20/
Cruise: HRS1414
HRS1414
R/V Hugh R. Sharp
Community Standard Description
International Council for the Exploration of the Sea
R/V Hugh R. Sharp
vessel
HRS1414
Raymond Najjar
Pennsylvania State University
R/V Hugh R. Sharp
Community Standard Description
International Council for the Exploration of the Sea
R/V Hugh R. Sharp
vessel