Chemical parameters measured on fog water samples from land and ocean locations on California coast from May 2014 to August 2017.

Website: https://www.bco-dmo.org/dataset/726198
Data Type: Other Field Results
Version: 1
Version Date: 2018-02-02

Project
» Collaborative Research: Investigations on the Cycling of Mercury from the Ocean to Fog and Deposition to Land in Coastal California (Mercury in Fog)
ContributorsAffiliationRole
Weiss-Penzias, PeterUniversity of California-Santa Cruz (UCSC)Principal Investigator
Coale, KennethMoss Landing Marine Laboratories (MLML)Co-Principal Investigator
Fernandez, DanielCalifornia State University Monterey Bay (CSU-MB)Co-Principal Investigator
Heim, WesleyMoss Landing Marine Laboratories (MLML)Co-Principal Investigator
Switzer, MeganWoods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Coverage

Spatial Extent: N:42.8585 E:-121.5967 S:36.0723 W:-126.8567
Temporal Extent: 2014-05-23 - 2017-08-15

Dataset Description

Complete methodology, sampling, and analytical procedures are explained in Weiss-Penzias P. S., Coale K., Heim W., Fernandez D., Oliphant A., Dodge C., Hoskins D., Farlin J., Moranville R. and Olson A. (2016) Total- and monomethyl-mercury and major ions in coastal California fog water: Results from two years of sampling on land and at sea. Elementa 4, 000101. doi: 10.12952/journal.elementa.000101

Other relevant publications:

Coale, K.H., Heim, W.A., Negrey, J., Weiss-Penzias, P., Fernandez, D., Olson, A., Chiswell, H., Byington, A., Bonnema, A., Martenuk, S., Newman, A., Beebe, C. and Till, C. (in review). The distribution and speciation of mercury in the California Current: Implications for mercury transport via fog to land. Deep Sea Research II.

M. Fernandez, Daniel & Torregrosa, Alicia & S. Weiss-Penzias, Peter & June Zhang, Bong & Sorensen, Deckard & E. Cohen, Robert & Mckinley, Gareth & Kleingartner, Justin & Oliphant, Andrew & Bowman, Matthew. (2017). Fog Water Collection Effectiveness: Mesh Intercomparisons. Aerosol and Air Quality Research: 18. doi: 10.4209/aaqr.2017.01.0040


Methods & Sampling

Fog water samples were collected with a Caltech active strand cloudwater collector. Total Hg was measured with a Tekran 2600 and monomethylmercury was measured with a Tekran 2700. Inorganic ions were measured with an Dionex ion chromatograph with suppressed conductivity detection using 29 mM KOH eluent.


Data Processing Description

The data were processed using Microsoft Excel, Microsoft Access, ArcGIS 9.0, and OriginLab Origin 2016.


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Data Files

File
726198.csv
(Comma Separated Values (.csv), 54.97 KB)
MD5:906801d302f0e14bab08a5aac51a194c
Primary data file for dataset ID 726198

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Parameters

ParameterDescriptionUnits
Sample_IDSample identifier on bottle no units
Date_collectedDate collected in format mm/dd/yy unitless
Sample_typefield blank,rain sample, or fog sample no units
Sample_type_2aliquot,filtered,incubated no units
Sample_locationLocation ID. BCR- Big Creek Reserve; BML- Bodega Marine Labs; FRF- Fritzche Field; HSU- Humboldt State University Marine Labs; LML- Long Marine Lab; MTA- Montara Lighthouse; OCE- Pacific Ocean, various locations; PPW- Pepperwood Preserve; SFSU- San Francisco State University; UCSC- University of California, Santa Cruz no units
LatitudeLatitude decimal degrees
LongitudeLongtitude decimal degrees
Sample_volSample volume mL
HgTTotal mercury ng/L
MMHgMonomethyl mercury ng/L
AmmoniumAmmonium ion mg/L
ChlorideChloride ion mg/L
SulfateSulfate ion mg/L
NitrateNitrate ion mg/L
pHpH pH scale
bank_flagFlag was set to 1 if the field blank was > 20% of sample concentration no units
volume_flagFlag was set to 1 if sample volume was > 10 mL no units
TOCTotal organic carbon ppb
UCSC_HgTTotal mercury measured at UCSC lab ng/L
UCSC_MMHgMomomethyl mercury measured at UCSC lab ng/L
HM_SO4Sulfate ion measured at Harvey Mudd lab mg/L
HM_NO3Nitrate ion measured at Harvey Mudd lab mg/L
delO18Deviation of oxygen-18 ratio from a standard (which standard???) per mille


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Instruments

Dataset-specific Instrument Name
Dionex ion chromatograph with suppressed conductivity detection using 29 mM KOH eluent
Generic Instrument Name
Ion Chromatograph
Generic Instrument Description
Ion chromatography is a form of liquid chromatography that measures concentrations of ionic species by separating them based on their interaction with a resin. Ionic species separate differently depending on species type and size. Ion chromatographs are able to measure concentrations of major anions, such as fluoride, chloride, nitrate, nitrite, and sulfate, as well as major cations such as lithium, sodium, ammonium, potassium, calcium, and magnesium in the parts-per-billion (ppb) range. (from http://serc.carleton.edu/microbelife/research_methods/biogeochemical/ic....)

Dataset-specific Instrument Name
Caltech active strand cloudwater collector
Generic Instrument Name
Cloudwater collector

Dataset-specific Instrument Name
Tektran 2600; Tektran 2700
Generic Instrument Name
Automated Mercury Analysis System
Generic Instrument Description
Examples include Tekran Models 2600 and 2700 


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Project Information

Collaborative Research: Investigations on the Cycling of Mercury from the Ocean to Fog and Deposition to Land in Coastal California (Mercury in Fog)


Coverage: Coastal California


NSF abstract:

Monomethyl mercury (MMHg) is a highly toxic form of mercury in the marine environment, with the ability to bio-concentrate in aquatic food webs and threaten human health. Recent studies have indicated that fog deposition of MMHg may represent an important source of this toxic compound to terrestrial ecosystems that are impacted by fog, however these processes are poorly understood. Researchers from the University of California Santa Cruz, California State University Monterey Bay, and San Jose State University will conduct experiments using a network of fog observation sites (FogNet) along the California coast to examine the spatial and temporal distribution of MMHg in fog and its potential sources. Results from this study will help to better elucidate the role of fog in transporting MMHg to terrestrial ecosystems.

Broader Impacts: This study will provide scientific training for undergraduate and graduate students, including individuals from underrepresented groups, in a number of universities in California. FogNet will create a collaborative research network between state universities, federal entities, and non-governmental organizations. Results from this study will benefit society at large through furthering general knowledge on the cycling of toxic mercury.



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Funding

Funding SourceAward
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)
NSF Division of Ocean Sciences (NSF OCE)

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