Data

DMS, DMSP, DMSO measurements Minicosm Experiment, Davis 2002-03

Australian Antarctic Data Centre
VANCE, TESSA ROSEMARY
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.26179/5d671d92ae85e&rft.title=DMS, DMSP, DMSO measurements Minicosm Experiment, Davis 2002-03&rft.identifier=10.26179/5d671d92ae85e&rft.publisher=Australian Antarctic Data Centre&rft.description=Dimethylsulfide and its precursors and derivatives constitute a major sulfate aerosol source. This dataset incorporates the potential for increased UV radiation effects due to stratospheric ozone depletion over spring and summer in Antarctica, using large-scale incubation systems and 13-14 day incubation periods. Surface seawater (200 micron filtered) from the Davis coastal embayment was incubated during four experiments over the 2002-03 Antarctic Summer. The data incorporates seawater measurements of DMS, DMSP and DMSO over a temporal progression during each incubation experiment. Six polyethylene tanks of varying PAR and UV irradiances were incubated. Water was collected stored and analysed by gas chromatography according to a specific sampling protocol, employed by all investigators associated with the project. The data are organised according to analysis day, with each days calibration data displayed at the top of each sheet. The sample code is followed by GC run number and then the raw count data from the GC. This is calculated to nanomoles DMS, DMSP or DMSO. Sample Codes: Codes for temporal data follow format X.XXXX 1st X gives experiment number, 1 to 4. 2nd X gives sampling day, 0, 0.5, 1, 2, 4, 7, 14 (will result in digit code for day no. less than 10 3rd X gives tank number relating to irradiance level(one to six) 4th and 5th X is replicate number, (01, 02, 03, DMS), (04, 05,06, DMSP total), (07, 08, 09, DMSP dissolved), (10, 11, 12, DMSO total). The fields in this dataset are: Sample Code Run Number from the GC Counts - GC generated raw data Log Counts - logarithmic conversion of the count data Log -c - logarithmic conversion minus the y-intercept determined by calibration of the GC. (log -c)/m - log -c divided by m, determined by calibration of the GC. ngS anti log - nanograms of Sulfur NaOH - NaOH adjustment ngS/L - adjustment per litre nM-DMSP/L - nanoMol's DMSP per litre nm-DMS/L - nanoMol's DMS per litre September 2013 Update: DMSO was analysed in these experiments according to an adaptation of the sodium borohydride (NaBH4) reduction method of Andreae (1980). The method has since been superseded and the data here probably displays inaccuracies as a result of the analytical method used. This DMSO data should be treated with caution.&rft.creator=VANCE, TESSA ROSEMARY &rft.date=2004&rft.coverage=northlimit=-68.5222; southlimit=-68.62655; westlimit=77.82166; eastLimit=78.33801; projection=WGS84&rft.coverage=northlimit=-68.5222; southlimit=-68.62655; westlimit=77.82166; eastLimit=78.33801; projection=WGS84&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=UV_DMS_MINICOSM when using these data.&rft_subject=climatologyMeteorologyAtmosphere&rft_subject=oceans&rft_subject=EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > OXYGEN COMPOUNDS > ATMOSPHERIC OZONE&rft_subject=DIMETHYL SULFIDE&rft_subject=EARTH SCIENCE&rft_subject=ATMOSPHERE&rft_subject=ATMOSPHERIC CHEMISTRY&rft_subject=SULFUR COMPOUNDS&rft_subject=DAVIS&rft_subject=DIMETHYLSULFIDE&rft_subject=DMS&rft_subject=UV&rft_subject=MINICOSM SYSTEM&rft_subject=GAS CHROMATOGRAPHS&rft_subject=FIELD INVESTIGATION&rft_subject=ACR > Antarctic Climate Research&rft_subject=CONTINENT > ANTARCTICA > Davis&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=VERTICAL LOCATION > SEA SURFACE&rft_place=Hobart&rft.type=dataset&rft.language=English Access the data
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This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=UV_DMS_MINICOSM when using these data.

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Brief description

Dimethylsulfide and its precursors and derivatives constitute a major sulfate aerosol source. This dataset incorporates the potential for increased UV radiation effects due to stratospheric ozone depletion over spring and summer in Antarctica, using large-scale incubation systems and 13-14 day incubation periods. Surface seawater (200 micron filtered) from the Davis coastal embayment was incubated during four experiments over the 2002-03 Antarctic Summer.

The data incorporates seawater measurements of DMS, DMSP and DMSO over a temporal progression during each incubation experiment. Six polyethylene tanks of varying PAR and UV irradiances were incubated. Water was collected stored and analysed by gas chromatography according to a specific sampling protocol, employed by all investigators associated with the project.

The data are organised according to analysis day, with each days calibration data displayed at the top of each sheet. The sample code is followed by GC run number and then the raw count data from the GC. This is calculated to nanomoles DMS, DMSP or DMSO.

Sample Codes: Codes for temporal data follow format X.XXXX
1st X gives experiment number, 1 to 4.
2nd X gives sampling day, 0, 0.5, 1, 2, 4, 7, 14 (will result in digit code for day no. less than 10
3rd X gives tank number relating to irradiance level(one to six)
4th and 5th X is replicate number, (01, 02, 03, DMS), (04, 05,06, DMSP total), (07, 08, 09, DMSP dissolved), (10, 11, 12, DMSO total).

The fields in this dataset are:

Sample Code
Run Number from the GC
Counts - GC generated raw data
Log Counts - logarithmic conversion of the count data
Log -c - logarithmic conversion minus the y-intercept determined by calibration of the GC.
(log -c)/m - log -c divided by m, determined by calibration of the GC.
ngS anti log - nanograms of Sulfur
NaOH - NaOH adjustment
ngS/L - adjustment per litre
nM-DMSP/L - nanoMol's DMSP per litre
nm-DMS/L - nanoMol's DMS per litre

September 2013 Update: DMSO was analysed in these experiments according to an adaptation of the sodium borohydride (NaBH4) reduction method of Andreae (1980). The method has since been superseded and the data here probably displays inaccuracies as a result of the analytical method used. This DMSO data should be treated with caution.

Issued: 2004-04-07

Data time period: 2002-11-12 to 2003-06-26

This dataset is part of a larger collection

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78.33801,-68.5222 78.33801,-68.62655 77.82166,-68.62655 77.82166,-68.5222 78.33801,-68.5222

78.079835,-68.574375

text: northlimit=-68.5222; southlimit=-68.62655; westlimit=77.82166; eastLimit=78.33801; projection=WGS84

Subjects
ACR > Antarctic Climate Research | ATMOSPHERE | ATMOSPHERIC CHEMISTRY | CONTINENT > ANTARCTICA > Davis | DAVIS | DIMETHYL SULFIDE | DIMETHYLSULFIDE | DMS | EARTH SCIENCE | EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > OXYGEN COMPOUNDS > ATMOSPHERIC OZONE | FIELD INVESTIGATION | GAS CHROMATOGRAPHS | GEOGRAPHIC REGION > POLAR | MINICOSM SYSTEM | SULFUR COMPOUNDS | UV | VERTICAL LOCATION > SEA SURFACE | climatologyMeteorologyAtmosphere | oceans |

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AU-ANL:PEAU : http://nla.gov.au/nla.party-617536

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