Dataset: GT10-11 - DI Water Soluble Aerosol Trace Elements

Name: DI water soluble aerosol trace elements from R/V Knorr cruises KN199-04 and KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)
Published: 2015-02-27
Keywords: oceans

Cite This Dataset

Spatial Extent: N:39.71 E:-9.66 S:17.35 W:-69.87

Project:

U.S. GEOTRACES North Atlantic Transect (GA03) (U.S. GEOTRACES NAT)

Program:

U.S. GEOTRACES (U.S. GEOTRACES)

Principal Investigator:

William M. Landing (Florida State University, FSU - EOAS)

Contact:

Rachel Shelley (Florida State University, FSU - EOAS)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

27 Feb 2015

Version Date:

2015-02-27

Restricted:

Validated:

Yes

Current State:

Final no updates expected

DI water soluble aerosol trace elements from R/V Knorr cruises KN199-04 and KN204-01 in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)

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Description

DI water soluble aerosol trace metals (Li, Na, Mg, Al, P, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Rb, Sr, Zr, Cd, Sn, Sb, Cs, Ba, La, Nd, Pb, Th, U) from the 2010 and 2011 U.S. GEOTRACES North Atlantic Transect cruises.

27 February 2015: Values in the Cl, NO3, and nss_SO4 columns were corrected.

Please note that some US GEOTRACES data may not be final, pending intercalibration results and further analysis. If you are interested in following changes to US GEOTRACES NAT data, there is an RSS feed available via the BCO-DMO US GEOTRACES project page (scroll down and expand the "Datasets" section).

Methods & Sampling

Sample Collection
Aerosol samples were collected on acid-washed Whatman 41 (W41) cellulose ester filter papers deployed in one of two high-volume aerosol samplers (model 5170-VBL, Tisch Environmental) simultaneously operating at approximately 1.2 cubic meters air per minute. The aerosol samplers were deployed on the ship’s flying bridge (14 m above sea level) as high off the water as possible. Contamination from the ship’s stack exhaust was avoided by controlling aerosol sampling with respect to wind sector and wind speed using an anemometer interfaced with a Campbell Scientific CR800 datalogger and PC. The samplers were allowed to run when the wind was +/- 60 degrees from the bow and > 0.5 m/s. When the wind failed to meet these two criteria, the motors were shut off automatically and not allowed to restart until the wind met both the speed and direction criteria for 5 continuous minutes. The anemometer was deployed nearby on a separate pole in 'free air' where turbulence from the wind crossing the bow did not cause the wind vane to wobble excessively.

Trace Element Determination
The fractional solubility of aerosol trace elements was estimated using the flow-through deionized water leaching protocol of Buck et al. (2006), conducted under a Class-100 laminar flow hood within 1 week of sample collection. Ultrapure deionized water (100 mL, >18 MΩ cm resistivity, pH ~ 5.5, Barnstead Nanopure) was rapidly passed through an aerosol-laden W41 filter held in a polysulfone vacuum filtration assembly (Nalgene). Operationally defined dissolved (≤0.45 um) trace elements were collected in the filtrate (leachate) by positioning a GN-6 Metricel backing filter (cellulose esters) below the aerosol-laden W41 disc in the filtration assembly. Ninety mL of the leachate was immediately transferred into an acid-cleaned 100 mL low density polyethylene bottle and acidified to ~0.024 M HCl (pH ~ 1.7) with ultrapure HCl and double-bagged for storage until analysis. Filters for both the soluble aerosol concentration measurements were stored frozen prior to performing the leaches. Trace element concentrations in the leachate solutions were determined by inductively coupled plasma mass spectrometry (Thermo Element-2) at the National High Magnetic Field Laboratory at Florida State University. Blank solutions were prepared by passing 100 mL of deionized water through W41 filters that had been deployed in the aerosol sampler while not in operation for 1 h. Blank leachates averaged e.g., 0.007 ± 0.004 pmol dissolved Fe and 0.073 ± 0.007 pmol dissolved Al (representing averages of 1.6 ± 0.38% and 9.1 ± 0.40% of the Fe and Al sample concentrations, respectively), and were subtracted from all leachate sample concentrations. Analysis of replicate filters for soluble Fe and Al produced relative standard deviations of 10% and 11%, respectively.

Major seawater anion determination
Following the DI water leach a 10 mL aliquot was taken for determination of DI soluble Cl-, NO3- and (SO4)2-. The aliquot was decanted into 15 mL HDPE bottles, double-bagged and immediately frozen at -20 degrees C for sample preservation and storage. Prior to major anion determination by ion chromatography (Dionex), samples were left to defrost at room temperature. Non-sea salt sulphate (nss-(SO4)2-) was calculated using the concentration of DI water soluble Na (as determined by ICP-MS, see above) as the reference element to correct for aerosol sea spray content. The following equation was used:

nss-(SO4)2-= (SO4)2-measured−[( (SO4)2-/Na)seawater* (SO4)2-measured]

References:
Buck, C. S., Landing, W.M., Resing, J. A., Lebon, G. T. 2006. Aerosol iron and aluminum solubility in the northwest Pacific Ocean: Results from the 2002 IOC cruise. Geochemistry, Geophysics, Geosystems. 7. doi:10.1029/2005GC000977.

Data Processing Description

Concentrations below the detection limit are flagged as "BDL" (originally " <_DL") in the data columns. Representative detection limits were calculated using an air volume of 1200 cubic meters. See PDF of detection limits for this dataset.

Quality flag definitions:
BDL = below detection limit.
0 = No QC performed.
1 = Good data.
2 = Probably good data.
3 = Probably bad data that is potentially correctable.
4 = Bad data.
5 = Value changed.
6 = Sample < blank.
8 = Interpolated value.
9 = Missing value.

BCO-DMO made the following modifications:
- Replaced blanks with 'nd'.
- Replaced ' < DL' with 'BDL'. Replaced '< blank' with 'lt_blank'.
- Changed PI-supplied cruise IDs of KN204-2 and KN204-5 to KN204-01A and KN204-01B. Added 'cruise_part' column to distingush between parts A and B of cruise KN204-01.
- Copied averages and variances to all rows containing data for that sample (where applicable).
- 27 February 2015: Values in the Cl, NO3, and nss_SO4 columns were corrected.

Additional GEOTRACES Processing: After the data were submitted to the International Data Management Office, BODC, the office noticed that important identifying information was missing in many datasets. With the agreement of BODC and the US GEOTRACES lead PIs, BCO-DMO added standard US GEOTRACES information, such as the US GEOTRACES event number, to each submitted dataset lacking this information. To accomplish this, BCO-DMO compiled a 'master' dataset composed of the following parameters: station_GEOTRC, cast_GEOTRC (bottle and pump data only), event_GEOTRC, sample_GEOTRC, sample_bottle_GEOTRC (bottle data only), bottle_GEOTRC (bottle data only), depth_GEOTRC_CTD (bottle data only), depth_GEOTRC_CTD_rounded (bottle data only), BTL_ISO_DateTime_UTC (bottle data only), and GeoFish_id (GeoFish data only). This added information will facilitate subsequent analysis and inter comparison of the datasets.

Bottle parameters in the master file were taken from the GT-C_Bottle_GT10, GT-C_Bottle_GT11, ODF_Bottle_GT10, and ODF_Bottle_GT11 datasets. Non-bottle parameters, including those from GeoFish tows, Aerosol sampling, and McLane Pumps, were taken from the Event_Log_GT10 and Event_Log_GT11 datasets. McLane pump cast numbers missing in event logs were taken from the Particulate Th-234 dataset submitted by Ken Buesseler.

A standardized BCO-DMO method (called “join”) was then used to merge the missing parameters to each US GEOTRACES dataset, most often by matching on sample_GEOTRC or on some unique combination of other parameters.

If the master parameters were included in the original data file and the values did not differ from the master file, the original data columns were retained and the name of the parameters were changed from the PI-submitted names to the standardized master names. If there were differences between the PI-supplied parameter values and those in the master file, both columns were retained. If the original data submission included all of the master parameters, no additional columns were added, but parameter names were modified to match the naming conventions of the master file.

See the dataset parameters documentation for a description of which parameters were supplied by the PI and which were added via the join method.

Data Files

File
GT10-11_Aerosols_DI_Soluble_joined.csv (Comma Separated Values (.csv), 41.88 KB) MD5:03d102cf6aaa48afe1d03391af3b09ee Primary data file for dataset ID 529106

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-0752351
NSF Division of Ocean Sciences	OCE-0929919
NSF Division of Ocean Sciences	OCE-1132766

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
KN199-04	GA03 GT10 USGT-NAT-2010 KN199-4 GNAT U.S. GEOTRACES NAZT Leg 1 knorr199-4/5 Section Cruise (GA03) 316N20101015	2010-10-15	R/V Knorr	William J. Jenkins (Chief Scientist) Edward A. Boyle (Co-Chief Scientist) Gregory A. Cutter (Co-Chief Scientist)	data info
KN204-01	GA03 GT11 KN204-01A KN204-01B USGT-NAT-2011 USGNAZT GNAT 316N20111106 KN204-1	2011-11-06	R/V Knorr	Edward A. Boyle (Chief Scientist) Gregory A. Cutter (Co-Chief Scientist)	data info

Instruments

Aerosol Sampler

Supplied Name: Aerosol_Sampler

Supplied Description:

The Florida State University high volume aerosol sampler (Tisch Environmental TSP TE5170V) was used; located on the flying deck forward railings. Flow rate = 1 m3/min.

Instrument Type

Generic Name: Aerosol Sampler

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/13/

Generic Description:

A device that collects a sample of aerosol (dry particles or liquid droplets) from the atmosphere.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
cruise_id	Official cruise identifier e.g. KN199-04 = R/V Knorr cruise number 199-04.	dimensionless	cruise_id
sample_GEOTRC	Unique identifying number for US GEOTRACES samples; ranges from 5033 to 6078 for KN199-04 and from 6112 to 8148 for KN204-01. PI-supplied values were identical to those in the intermediate US GEOTRACES master file Originally submitted as 'Sample #'; this parameter name has been changed to conform to BCO-DMO's GEOTRACES naming conventions."	dimensionless	no_bcodmo_term
station_GEOTRC	GEOTRACES station number; ranges from 1 through 12 for KN199-04 and 1 through 24 for KN204-01. Stations 7 and 9 were skipped on KN204-01. Some GeoFish stations are denoted as X_to_Y indicating the tow occurred between stations X and Y. Values were added from the intermediate US GEOTRACES master file (see Processing Description).	dimensionless	no_bcodmo_term
event_GEOTRC	Unique identifying number for US GEOTRACES sampling events; ranges from 2001 to 2225 for KN199-04 events and from 3001 to 3282 for KN204-01 events. Values were added from the intermediate US GEOTRACES master file (see Processing Description).	dimensionless	no_bcodmo_term
cruise_part	Part of cruise. For KN204-01: A = 11/6/2011 to 11/18/2011 (Woods Hole to Bermuda); B = 11/19/2011 to 12/11/2011 (Bermuda to Praia, Cabo Verde)	text	cruise_part
julian_day	Julian day at start of sampling event.	unitless	julian_day
day_start	2-digit day of month at start of sampling event.	dd (01 to 31)	day_start
month_start	2-digit month at start of sampling event.	mm (01 to 12)	month_start
year_start	4-digit year at start of sampling event.	YYYY	year_start
time_start_utc	Time (UTC) at start of sampling event; 24-hour clock.	HHMM	time_start
ISO_DateTime_UTC_start	Date and time (UTC) variable recorded at the start of sampling time in ISO compliant format. This standard is based on ISO 8601:2004(E) and takes on the following form: 2009-08-30T14:05:00[.xx]Z (UTC time)	YYYY-MM-DDTHH:MM:SS[.xx][+/-TZ]	ISO_DateTime_UTC
lat_start	Latitude at start of sampling event. North = Positive.	decimal degrees	lat_start
lon_start	Longitude at start of sampling event. West = Negative.	decimal degrees	lon_start
day_end	2-digit day of month at end of sampling event.	dd (01 to 31)	day_end
month_end	2-digit month at end of sampling event.	mm (01 to 12)	month_end
year_end	4-digit year at end of sampling event.	YYYY	year_end
time_end_utc	Time (UTC) at end of sampling event; 24-hour clock.	HHMM	time_end
ISO_DateTime_UTC_end	Date and time (UTC) variable recorded at the end of sampling time in ISO compliant format. This standard is based on ISO 8601:2004(E) and takes on the following form: 2009-08-30T14:05:00[.xx]Z (UTC time)	YYYY-MM-DDTHH:MM:SS[.xx][+/-TZ]	ISO_DateTime_UTC
lat_end	Latitude at end of sampling event. North = Positive.	decimal degrees	lat_end
lon_end	Longitude at end of sampling event. West = Negative.	decimal degrees	lon_end
air_vol_tot	Total volume of air sampled in cubic meters.	cubic meters (m^3)	sample_volume
air_vol_per_filt	Volume of air filtered per filter in cubic meters.	m^3	sample_volume
PVC_plate_position	PVC plate position. Location of W41 disc filter on 12 position filter holder.	unitless	no_bcodmo_term
Li_DI_soluble	DI water soluble aerosol Li (Lithium) concentration.	nanograms per cubic meter (ng/m^3)	metal_conc_air
Li_DI_sol_avg	DI water soluble aerosol Li average concentration.	ng/m^3	no_bcodmo_term
Li_DI_sol_var	DI water soluble aerosol Li concentration variance.	ng/m^3	no_bcodmo_term
Li_DI_sol_flag	DI water soluble aerosol Li concentration data quality flag.	unitless	q_flag
Na_DI_soluble	DI water soluble aerosol Na (Sodium) concentration.	ng/m^3	metal_conc_air
Na_DI_sol_avg	DI water soluble aerosol Na average concentration.	ng/m^3	no_bcodmo_term
Na_DI_sol_var	DI water soluble aerosol Na concentration variance.	ng/m^3	no_bcodmo_term
Na_DI_sol_flag	DI water soluble aerosol Na concentration data quality flag.	unitless	q_flag
Mg_DI_soluble	DI water soluble aerosol Mg (Magnesium) concentration.	ng/m^3	metal_conc_air
Mg_DI_sol_avg	DI water soluble aerosol Mg average concentration.	ng/m^3	no_bcodmo_term
Mg_DI_sol_var	DI water soluble aerosol Mg concentration variance.	ng/m^3	no_bcodmo_term
Mg_DI_sol_flag	DI water soluble aerosol Mg concentration data quality flag.	unitless	q_flag
Al_DI_soluble	DI water soluble aerosol Al (Aluminum) concentration.	ng/m^3	metal_conc_air
Al_DI_sol_avg	DI water soluble aerosol Al average concentration.	ng/m^3	no_bcodmo_term
Al_DI_sol_var	DI water soluble aerosol Al concentration variance.	ng/m^3	no_bcodmo_term
Al_DI_sol_flag	DI water soluble aerosol Al concentration data quality flag.	unitless	q_flag
P_DI_soluble	DI water soluble aerosol P (Phosphorus) concentration	ng/m^3	metal_conc_air
P_DI_soluble_avg	DI water soluble aerosol P average concentration.	ng/m^3	no_bcodmo_term
P_DI_sol_var	DI water soluble aerosol P concentration variance.	ng/m^3	no_bcodmo_term
P_DI_sol_flag	DI water soluble aerosol P concentration data quality flag.	unitless	q_flag
Sc_DI_soluble	DI water soluble aerosol Sc (Scandium) concentration	ng/m^3	metal_conc_air
Sc_DI_sol_avg	DI water soluble aerosol Sc average concentration.	ng/m^3	no_bcodmo_term
Sc_DI_sol_var	DI water soluble aerosol Sc concentration variance.	ng/m^3	no_bcodmo_term
Sc_DI_sol_flag	DI water soluble aerosol Sc concentration data quality flag.	unitless	q_flag
Ti_DI_soluble	DI water soluble aerosol Ti (Titanium) concentration	ng/m^3	metal_conc_air
Ti_DI_sol_avg	DI water soluble aerosol Ti average concentration.	ng/m^3	no_bcodmo_term
Ti_DI_sol_var	DI water soluble aerosol Ti concentration variance.	ng/m^3	no_bcodmo_term
Ti_DI_sol_flag	DI water soluble aerosol Ti concentration data quality flag.	unitless	q_flag
V_DI_soluble	DI water soluble aerosol V (Vanadium) concentration.	ng/m^3	metal_conc_air
V_DI_sol_avg	DI water soluble aerosol V average concentration.	ng/m^3	no_bcodmo_term
V_DI_sol_var	DI water soluble aerosol V concentration variance.	ng/m^3	no_bcodmo_term
V_DI_sol_flag	DI water soluble aerosol V concentration data quality flag.	unitless	q_flag
Cr_DI_soluble	DI water soluble aerosol Cr (Chromium) concentration.	ng/m^3	metal_conc_air
Cr_DI_sol_avg	DI water soluble aerosol Cr average concentration.	ng/m^3	no_bcodmo_term
Cr_DI_sol_var	DI water soluble aerosol Cr concentration variance.	ng/m^3	no_bcodmo_term
Cr_DI_sol_flag	DI water soluble aerosol Cr concentration data quality flag.	unitless	q_flag
Mn_DI_soluble	DI water soluble aerosol Mn (Manganese) concentration.	ng/m^3	metal_conc_air
Mn_DI_sol_avg	DI water soluble aerosol Mn average concentration.	ng/m^3	no_bcodmo_term
Mn_DI_sol_var	DI water soluble aerosol Mn concentration variance.	ng/m^3	no_bcodmo_term
Mn_DI_sol_flag	DI water soluble aerosol Mn concentration data quality flag.	unitless	q_flag
Fe_DI_soluble	DI water soluble aerosol Fe (Iron) concentration.	ng/m^3	metal_conc_air
Fe_DI_sol_avg	DI water soluble aerosol Fe average concentration.	ng/m^3	no_bcodmo_term
Fe_DI_sol_var	DI water soluble aerosol Fe concentration variance.	ng/m^3	no_bcodmo_term
Fe_DI_sol_flag	DI water soluble aerosol Fe concentration data quality flag.	unitless	q_flag
Co_DI_soluble	DI water soluble aerosol Co (Cobalt) concentration.	ng/m^3	metal_conc_air
Co_DI_sol_avg	DI water soluble aerosol Co average concentration.	ng/m^3	no_bcodmo_term
Co_DI_sol_var	DI water soluble aerosol Co concentration variance.	ng/m^3	no_bcodmo_term
Co_DI_sol_flag	DI water soluble aerosol Co concentration data quality flag.	unitless	q_flag
Ni_DI_soluble	DI water soluble aerosol Ni (Nickel) concentration.	ng/m^3	metal_conc_air
Ni_DI_sol_avg	DI water soluble aerosol Ni average concentration.	ng/m^3	no_bcodmo_term
Ni_DI_sol_var	DI water soluble aerosol Ni concentration variance.	ng/m^3	no_bcodmo_term
Ni_DI_sol_flag	DI water soluble aerosol Ni concentration data quality flag.	unitless	q_flag
Cu_DI_soluble	DI water soluble aerosol Cu (Copper) concentration.	ng/m^3	metal_conc_air
Cu_DI_sol_avg	DI water soluble aerosol Cu average concentration.	ng/m^3	no_bcodmo_term
Cu_DI_sol_var	DI water soluble aerosol Cu concentration variance.	ng/m^3	no_bcodmo_term
Cu_DI_sol_flag	DI water soluble aerosol Cu concentration data quality flag.	unitless	q_flag
Zn_DI_soluble	DI water soluble aerosol Zn (Zinc) concentration.	ng/m^3	metal_conc_air
Zn_DI_sol_avg	DI water soluble aerosol Zn average concentration.	ng/m^3	no_bcodmo_term
Zn_DI_sol_var	DI water soluble aerosol Zn concentration variance.	ng/m^3	no_bcodmo_term
Zn_DI_sol_flag	DI water soluble aerosol Zn concentration data quality flag.	unitless	q_flag
As_DI_soluble	DI water soluble aerosol As (Arsenic) concentration.	ng/m^3	metal_conc_air
As_DI_sol_avg	DI water soluble aerosol As average concentration.	ng/m^3	no_bcodmo_term
As_DI_sol_var	DI water soluble aerosol As concentration variance.	ng/m^3	no_bcodmo_term
As_DI_sol_flag	DI water soluble aerosol As concentration data quality flag.	unitless	q_flag
Se_DI_soluble	DI water soluble aerosol Se (Selenium) concentration.	ng/m^3	metal_conc_air
Se_DI_sol_avg	DI water soluble aerosol Se average concentration.	ng/m^3	no_bcodmo_term
Se_DI_sol_var	DI water soluble aerosol Se concentration variance.	ng/m^3	no_bcodmo_term
Se_DI_sol_flag	DI water soluble aerosol Se concentration data quality flag.	unitless	q_flag
Rb_DI_soluble	DI water soluble aerosol Rb (Rubidium) concentration.	ng/m^3	metal_conc_air
Rb_DI_sol_avg	DI water soluble aerosol Rb average concentration.	ng/m^3	no_bcodmo_term
Rb_DI_sol_var	DI water soluble aerosol Rb concentration variance.	ng/m^3	no_bcodmo_term
Rb_DI_sol_flag	DI water soluble aerosol Rb concentration data quality flag.	unitless	q_flag
Sr_DI_soluble	DI water soluble aerosol Sr (Strontium) concentration.	ng/m^3	metal_conc_air
Sr_DI_sol_avg	DI water soluble aerosol Sr average concentration.	ng/m^3	no_bcodmo_term
Sr_DI_sol_var	DI water soluble aerosol Sr concentration variance.	ng/m^3	no_bcodmo_term
Sr_DI_sol_flag	DI water soluble aerosol Sr concentration data quality flag.	unitless	q_flag
Zr_DI_solubble	DI water soluble aerosol Zr (Zirconium) concentration.	ng/m^3	metal_conc_air
Zr_DI_sol_avg	DI water soluble aerosol Zr average concentration.	ng/m^3	no_bcodmo_term
Zr_DI_sol_var	DI water soluble aerosol Zr concentration variance.	ng/m^3	no_bcodmo_term
Zr_DI_sol_flag	DI water soluble aerosol Zr concentration data quality flag.	unitless	q_flag
Cd_DI_soluble	DI water soluble aerosol Cd (Cadmium) concentration.	ng/m^3	metal_conc_air
Cd_DI_sol_avg	DI water soluble aerosol Cd average concentration.	ng/m^3	no_bcodmo_term
Cd_DI_sol_var	DI water soluble aerosol Cd concentration variance.	ng/m^3	no_bcodmo_term
Cd_DI_sol_flag	DI water soluble aerosol Cd concentration data quality flag.	unitless	q_flag
Sn_DI_soluble	DI water soluble aerosol Sn (Tin) concentration.	ng/m^3	metal_conc_air
Sn_DI_sol_avg	DI water soluble aerosol Sn average concentration.	ng/m^3	no_bcodmo_term
Sn_DI_sol_var	DI water soluble aerosol Sn concentration variance.	ng/m^3	no_bcodmo_term
Sn_DI_sol_flag	DI water soluble aerosol Sn concentration data quality flag.	unitless	q_flag
Sb_DI_soluble	DI water soluble aerosol Sb (Antimony) concentration.	ng/m^3	metal_conc_air
Sb_DI_sol_avg	DI water soluble aerosol Sb average concentration.	ng/m^3	no_bcodmo_term
Sb_DI_sol_var	DI water soluble aerosol Sb concentration variance.	ng/m^3	no_bcodmo_term
Sb_DI_sol_flag	DI water soluble aerosol Sb concentration data quality flag.	unitless	q_flag
Cs_DI_soluble	DI water soluble aerosol Cs (Caesium) concentration.	ng/m^3	metal_conc_air
Cs_DI_sol_avg	DI water soluble aerosol Cs average concentration.	ng/m^3	no_bcodmo_term
Cs_DI_sol_var	DI water soluble aerosol Cs concentration variance.	ng/m^3	no_bcodmo_term
Cs_DI_soluble_flag	DI water soluble aerosol Cs concentration data quality flag.	unitless	q_flag
Ba_DI_soluble	DI water soluble aerosol Ba (Barium) concentration.	ng/m^3	metal_conc_air
Ba_DI_sol_avg	DI water soluble aerosol Ba average concentration.	ng/m^3	no_bcodmo_term
Ba_DI_sol_var	DI water soluble aerosol Ba concentration variance.	ng/m^3	no_bcodmo_term
Ba_DI_sol_flag	DI water soluble aerosol Ba concentration data quality flag.	unitless	q_flag
La_DI_soluble	DI water soluble aerosol La (Lanthanum) concentration.	ng/m^3	metal_conc_air
La_DI_sol_avg	DI water soluble aerosol La average concentration.	ng/m^3	no_bcodmo_term
La_DI_sol_var	DI water soluble aerosol La concentration variance.	ng/m^3	no_bcodmo_term
La_DI_sol_flag	DI water soluble aerosol La concentration data quality flag.	unitless	q_flag
Ce_DI_soluble	DI water soluble aerosol Ce (Cerium) concentration.	ng/m^3	metal_conc_air
Ce_DI_sol_avg	DI water soluble aerosol Ce average concentration.	ng/m^3	no_bcodmo_term
Ce_DI_sol_var	DI water soluble aerosol Ce concentration variance.	ng/m^3	no_bcodmo_term
Ce_DI_sol_flag	DI water soluble aerosol Ce concentration data quality flag.	unitless	q_flag
Nd_DI_soluble	DI water soluble aerosol Nd (Neodymium) concentration.	ng/m^3	metal_conc_air
Nd_DI_sol_avg	DI water soluble aerosol Nd average concentration.	ng/m^3	no_bcodmo_term
Nd_DI_sol_var	DI water soluble aerosol Nd concentration variance.	ng/m^3	no_bcodmo_term
Nd_DI_sol_flag	DI water soluble aerosol Nd concentration data quality flag.	unitless	q_flag
Pb_DI_soluble	DI water soluble aerosol Pb (Lead) concentration.	ng/m^3	metal_conc_air
Pb_DI_sol_avg	DI water soluble aerosol Pb average concentration.	ng/m^3	no_bcodmo_term
Pb_DI_sol_var	DI water soluble aerosol Pb concentration variance.	ng/m^3	no_bcodmo_term
Pb_DI_sol_flag	DI water soluble aerosol Pb concentration data quality flag.	unitless	q_flag
Th_DI_soluble	DI water soluble aerosol Th (Thorium) concentration.	ng/m^3	metal_conc_air
Th_DI_sol_avg	DI water soluble aerosol Th average concentration.	ng/m^3	no_bcodmo_term
Th_DI_sol_var	DI water soluble aerosol Th concentration variance.	ng/m^3	no_bcodmo_term
Th_DI_sol_flag	DI water soluble aerosol Th concentration data quality flag.	unitless	q_flag
U_DI_soluble	DI water soluble aerosol U (Uranium) concentration.	ng/m^3	metal_conc_air
U_DI_sol_avg	DI water soluble aerosol U average concentration.	ng/m^3	no_bcodmo_term
U_DI_sol_var	DI water soluble aerosol U concentration variance.	ng/m^3	no_bcodmo_term
U_DI_sol_flag	DI water soluble aerosol U concentration data quality flag.	unitless	q_flag
Cl_DI_soluble	DI water soluble aerosol chloride concentration.	ng/m^3	metal_conc_air
Cl_DI_sol_avg	DI water soluble aerosol chloride average concentration.	ng/m^3	no_bcodmo_term
Cl_DI_sol_var	DI water soluble aerosol chloride concentration variance.	ng/m^3	no_bcodmo_term
Cl_DI_sol_flag	DI water soluble aerosol chloride concentration data quality flag.	unitless	q_flag
NO3_DI_soluble	DI water soluble aerosol nitrate concentration.	ng/m^3	no_bcodmo_term
NO3_DI_sol_avg	DI water soluble aerosol nitrate average concentration.	ng/m^3	no_bcodmo_term
NO3_DI_sol_var	DI water soluble aerosol nitrate concentration variance.	ng/m^3	no_bcodmo_term
NO3_DI_sol_flag	DI water soluble aerosol nitrate concentration data quality flag.	unitless	q_flag
nss_SO4_DI_soluble	DI water soluble aerosol non-sea salt sulfate concentration.	ng/m^3	no_bcodmo_term
nss_SO4_DI_sol_avg	DI water soluble aerosol non-sea salt sulfate average concentration.	ng/m^3	no_bcodmo_term
nss_SO4_DI_sol_var	DI water soluble aerosol non-sea salt sulfate concentration variance.	ng/m^3	no_bcodmo_term
nss_SO4_DI_sol_flag	DI water soluble aerosol non-sea salt sulfate concentration data quality flag.	unitless	q_flag

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Dataset: GT10-11 - DI Water Soluble Aerosol Trace Elements