NERC Data Catalogue Service
Atmospheric nitrous acid amount fraction at Halley in January and February 2022
Atmospheric nitrous acid (HONO) amount fraction measured in the clean air sector at Halley VI Research Station between 22 January and 3 February 2022. The data was collected using a Long Path Absorption Photometer (LOPAP), the instrument inlet height above the snow was changed during the measurement period, this is indicated in the dataset. Temperature and wind speed data were collected are included to enable the HONO flux from the snow to be calculated.
This work was supported by the Natural Environment Research Council and the ARIES Doctoral Training Partnership [grant number NE/S007334/1]. The fieldwork at Halley VI Research Station was funded by the Collaborative Antarctic Science Scheme (CASS).
Simple
- Date (Creation)
- 2023-03-10
- Date (Revision)
- 2023-03-10
- Date (Publication)
- 2023-03-10
- Date (released)
- 2023-03-10
- Edition
- 1.0
- Unique resource identifier
- https://doi.org/10.5285/94b2f348-d6cc-4bcd-b921-5c0928ab3c2d
- Codespace
- doi
- Unique resource identifier
- GB/NERC/BAS/PDC/01718
- Codespace
- https://data.bas.ac.uk/
- Unique resource identifier
- NE/S007334/1
- Codespace
- award
- Other citation details
- Please cite this item as: Bond, A., Squires, F., Frey, M., & Kaiser, J. (2023). Atmospheric nitrous acid amount fraction at Halley in January and February 2022 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/94b2f348-d6cc-4bcd-b921-5c0928ab3c2d
- Credit
- No credit.
- Status
- completed Completed
https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/
- Maintenance and update frequency
- asNeeded As needed
- Maintenance note
- completed Completed
- Theme
-
- atmospheric chemistry
- nitrous acid
- reactive nitrogen
- trace gas
- Place
-
- Halley VI Research Station Antarctica
- GEMET - INSPIRE themes, version 1.0
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- no limitations to public access
- Access constraints
- otherRestrictions Other restrictions
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- no limitations
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- license License
- Other constraints
- Open Government Licence v3.0
- Use constraints
- otherRestrictions Other restrictions
- Other constraints
- Data supplied under Open Government Licence v3.0
- Use constraints
- otherRestrictions Other restrictions
- Other constraints
- None
- Unique resource identifier
- url
- Codespace
- url
- Association Type
- crossReference Cross reference
- Unique resource identifier
- doi
- Codespace
- doi
- Association Type
- crossReference Cross reference
- Spatial representation type
- textTable Text, table
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Topic category
-
- Climatology, meteorology, atmosphere
))
- Begin date
- 2022-01-22
- End date
- 2022-02-03
- Supplemental Information
- It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.
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https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/
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- Transfer size
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- Statement
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Methodology:
The nitrous acid (HONO) amount fraction was measured at 1 minute resolution using a Long Path Absorption Photometer (LOPAP). Data has been processed to remove interferences and account for time delays in the instrument. Regular baseline measurements (blanks) and calibrations were carried out and have been applied to the data; the blanks and calibration periods have been removed from the dataset. The HONO amount fraction is given in pmol mol-1. The inlet height column relates to the height of the inlet of the LOPAP above the snow. A value of 0 represents inlet in transit and we recommend ignoring this data. The temperature measurements were collected at 1.26 and 0.05 m above the snow surface (indicated in column headings). The data was collected at 5 second intervals and are given in oC. U and V wind vectors were collected at 1 m above the snow at 5 second intervals and are given in ms-1. The temperature and wind data were collected to allow calculation of the HONO flux from the snow by the flux gradient method. All times are UTC.
Data collection:
Instruments:
a. HONO: LOng Path Absorption Photometer (LOPAP, QUMA Elektronik & Analytik GmbH)
b. Wind: Gill Wind Observer 70
c. Temperature: TME Ethernet Thermometer
Data quality:
HONO: During the campaign the LOPAP was calibrated every 5 days using nitrite solutions of known concentration (2 x 10^-3 and 8 x 10^-4 mg L-1). The gas flow rate was set to 2 L min-1 (298 K, 1 atm) with the internal mass flow controller and checked frequently using a flow meter (DryCal DC-Lite), and the liquid flow rate through the stripping coil for each channel was regularly measured volumetrically and was between 0.15 and 0.18 mL min-1 during the measurement period. Baseline measurements were made every 6 hours using a flow of pure nitrogen (99.998 %, BOC) at the instrument inlet. The detection limit (3 sigma-blank) was 0.26 pmol mol-1 for the measurement period. Any missing values and gaps in the time series correspond to blanks and calibrations that have now been removed from the dataset.
Wind and temperature: data has not been calibrated. Missing values are caused by issues with the instruments/data collection.
- File identifier
- 94b2f348-d6cc-4bcd-b921-5c0928ab3c2d XML
- Metadata language
- engEnglish
- Character set
- utf8 UTF8
- Hierarchy level
- dataset Dataset
- Hierarchy level name
- dataset
- Date stamp
- 2023-03-10
- Metadata standard name
- ISO 19115 Geographic Information - Metadata
- Metadata standard version
- ISO 19115:2003(E)
https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/
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