Data Policy
GAW Data Policy
"For Scientific purposes, access to these data is unlimited and provided without charge.
By their use you accept that an offer of co-authorship will be made through personal contact with the data providers
or owners whenever substantial use is made of their data.
In all cases, an acknowledgement must be made to the data providers or owners and to the data centre when these data are used within a publication."
Version
2026-08-11-1506 (Last updated: 2026-08-27)File
This data set is submitted by NPL.
In line with the GAW Data Policy, users should contact the contributors of all data of interest and propose co-authorship or acknowledgement.
Organization
| NO | 154 |
|---|---|
| Acronym | NPL |
| Name | National Physical Laboratory |
| Address 1 | Hampton Rd |
| Address 2 | Teddington, Middlesex, UK |
| Address 3 | TW11 0LW |
| Country/Territory | United Kingdom of Great Britain and Northern Ireland |
| Website | https://www.npl.co.uk/ |
Contact(s)
| Name | Dafina Kikaj |
|---|---|
| Prefix | |
| dafina.kikaj@npl.co.uk | |
| Organization No | 154 |
| Organization acronym | NPL |
| Organization name | National Physical Laboratory |
| Organization country/territory | United Kingdom of Great Britain and Northern Ireland |
| Address 1 | Hampton Rd |
| Address 2 | Teddington, Middlesex, UK |
| Address 3 | TW11 0LW |
| Country/territory | United Kingdom of Great Britain and Northern Ireland |
| Tel | |
| Fax | |
| Last updated date | 2026-08-11 |
| Name | Edward Chung |
|---|---|
| Prefix | |
| edward.chung@npl.co.uk | |
| Organization No | 154 |
| Organization acronym | NPL |
| Organization name | National Physical Laboratory |
| Organization country/territory | United Kingdom of Great Britain and Northern Ireland |
| Address 1 | Hampton Rd |
| Address 2 | Teddington, Middlesex, UK |
| Address 3 | TW11 0LW |
| Country/territory | United Kingdom of Great Britain and Northern Ireland |
| Tel | |
| Fax | |
| Last updated date | 2026-08-11 |
| Name | Chris Rennick |
|---|---|
| Prefix | |
| chris.rennick@npl.co.uk | |
| Organization No | 154 |
| Organization acronym | NPL |
| Organization name | National Physical Laboratory |
| Organization country/territory | United Kingdom of Great Britain and Northern Ireland |
| Address 1 | Hampton Rd |
| Address 2 | Teddington, Middlesex, UK |
| Address 3 | TW11 0LW |
| Country/territory | United Kingdom of Great Britain and Northern Ireland |
| Tel | |
| Fax | |
| Last updated date | 2026-08-11 |
| Name | Emmal Safi |
|---|---|
| Prefix | |
| emmal.safi@npl.co.uk | |
| Organization No | 154 |
| Organization acronym | NPL |
| Organization name | National Physical Laboratory |
| Organization country/territory | United Kingdom of Great Britain and Northern Ireland |
| Address 1 | Hampton Rd |
| Address 2 | Teddington, Middlesex, UK |
| Address 3 | TW11 0LW |
| Country/territory | United Kingdom of Great Britain and Northern Ireland |
| Tel | |
| Fax | |
| Last updated date | 2026-08-11 |
| Atmospheric tracer | |
| UTC | |
| Bq/m3 | |
|
9999-12-31 00:00:00 - 9999-12-31 23:59:59: Unknown |
|
|
9999-12-31 00:00:00 - 9999-12-31 23:59:59: ANSTO 1500 L dual-flow-loop two-filter radon detector(Decay counting) |
|
|
9999-12-31 00:00:00 - 9999-12-31 23:59:59: 100 (m) |
|
| 30 minutes | |
| Best estimate of radon activity concentration. The reported values are deconvolved calibrated radon activity concentration corrected for standard temperature and pressure (288 K, 1013.25 hPa). The uncertainty is a 1-sigma uncertainty estimate calculated by (p84 - p16) / 2, where p84 and p16 are the 84th and 16th percentile of the deconvolution results. | |
|
[Hourly] [Daily] [Monthly] |
|
| Operational/Reporting | |
|
Wind direction: Wind speed: Relative humidity: Precipitation amount: Air pressure: Air temperature: Dew point temperature: Sea water temperature: Sea surface water temperature: Sea water salinity: Sea surface water salinity: |
|
|
Meteorological data may remain as first provided, even when greenhouse gas data are updated. |
DOI Metadata
| DOI |
|
||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Version |
2026-08-11-1506 (Data Version History) * DOIs and file names may have multiple versions. Be sure to check the data version. |
||||||||||||||||
| Title | Atmospheric 222Rn at Heathfield by National Physical Laboratory, dataset published as 222Rn_HFD6419_surface-insitu_NPL_data1 at WDCGG | ||||||||||||||||
| Creator |
National Physical Laboratory Dafina Kikaj (NPL) Edward Chung (NPL) Chris Rennick (NPL) Emmal Safi (NPL) |
||||||||||||||||
| Publisher | World Data Centre for Greenhouse Gases | ||||||||||||||||
| Publication Date | 2025-09-10 (Last Updated: 2026-08-27) | ||||||||||||||||
| Format | Text (WDCGG Data Format Table, WDCGG Meteorological Data Format Table), NetCDF | ||||||||||||||||
| Relation List (Is Part Of) |
All 222Rn data contributed to WDCGG by GAW stations and mobiles by 2025-09-10 |
||||||||||||||||
| Geolocation Point |
|
GAW Data Policy
"For Scientific purposes, access to these data is unlimited and provided without charge.
By their use you accept that an offer of co-authorship will be made through personal contact with the data providers
or owners whenever substantial use is made of their data.
In all cases, an acknowledgement must be made to the data providers or owners and to the data centre when these data are used within a publication."
Citation format
This format is an example of the WDCGG standard citation.
Please follow the citation format which the data providers or owners indicate.
Please follow the citation format which the data providers or owners indicate.
Dafina Kikaj (NPL),
Edward Chung (NPL),
Chris Rennick (NPL),
Emmal Safi (NPL),
Atmospheric 222Rn
at Heathfield by National Physical Laboratory,
dataset published as 222Rn_HFD6419_surface-insitu_NPL_data1 at WDCGG,
ver. 2026-08-11-1506, https://doi.org/10.50849/WDCGG_0154-6419-6002-01-01-9999 (Reference date*: YYYY/MM/DD)
* As the reference date, please indicate the date you downloaded the files.
* As the reference date, please indicate the date you downloaded the files.
Reference(s)
| 1 | Kikaj, Dafina, Edward Chung, Alan D. Griffiths, et al. 2025. ‘Direct High-Precision Radon Quantification for Interpreting High-Frequency Greenhouse Gas Measurements’. Atmospheric Measurement Techniques 18 (1): 151–75. https://doi.org/10.5194/amt-18-151-2025. |
|---|
