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
2025-08-21-1302 (Last updated: 2025-08-29)File
This data set is submitted by NOAA.
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 | 2 |
|---|---|
| Acronym | NOAA |
| Name | Global Monitoring Laboratory, NOAA |
| Address 1 | NOAA/ESRL |
| Address 2 | R/GML1 |
| Address 3 | 325 Broadway Boulder, CO 80305-3328 |
| Country/Territory | United States of America |
| Website | https://gml.noaa.gov/ |
Contact(s)
| Name | Debra J. Mondeel |
|---|---|
| Prefix | |
| Debra.J.Mondeel@noaa.gov | |
| Organization No | 2 |
| Organization acronym | NOAA |
| Organization name | Global Monitoring Laboratory, NOAA |
| Organization country/territory | United States of America |
| Address 1 | |
| Address 2 | |
| Address 3 | |
| Country/territory | United States of America |
| Tel | (303) 497-6013 |
| Fax | (303) 497-6290 |
| Last updated date | 2020-08-31 |
| Name | J. David Nance |
|---|---|
| Prefix | |
| David.Nance@noaa.gov | |
| Organization No | 2 |
| Organization acronym | NOAA |
| Organization name | Global Monitoring Laboratory, NOAA |
| Organization country/territory | United States of America |
| Address 1 | |
| Address 2 | |
| Address 3 | |
| Country/territory | United States of America |
| Tel | (303) 497-7002 |
| Fax | (303) 497-6290 |
| Last updated date | 2020-08-31 |
| Name | Stephen A. Montzka |
|---|---|
| Prefix | Dr. |
| Stephen.A.Montzka@noaa.gov | |
| Organization No | 2 |
| Organization acronym | NOAA |
| Organization name | Global Monitoring Laboratory, NOAA |
| Organization country/territory | United States of America |
| Address 1 | |
| Address 2 | |
| Address 3 | |
| Country/territory | United States of America |
| Tel | (303) 497-6657 |
| Fax | (303) 497-6290 |
| Last updated date | 2025-09-09 |
| Background observation | |
| UTC | |
| ppt | |
|
9999-12-31 00:00:00 - 9999-12-31 23:59:59: WMO SF6 X2014 |
|
|
9999-12-31 00:00:00 - 9999-12-31 23:59:59: Unknown(Gas chromatography (ECD)) |
|
| weekly | |
| See https://gml.noaa.gov/ccl/scales.html for more information about calibration scales. | |
|
These data represent mean estimates from pairs of concurrently-collected flask samples based on several injections from each flask. Mean estimates are derived for each individual flask, then the flask estimates are combined into a single estimate for the pair. Ideally, each concentration is estimated three different ways using three simple calibration curves. A two-point calibration is derived from nearby responses to both reference gases considered in unison, and separate one-point calibrations are derived from nearby responses to each reference gas considered in isolation from the other. These estimates are then reconciled in accordance with the method outlined at https://gml.noaa.gov/aftp/data/hats/doc/HATSflaskECDanalysis.pdf |
|
|
[Hourly] [Daily] [Monthly] These data represent monthly mean estimates computed using those data marked with a 0 in flag column 7 of the event data. With flask samples collected only weekly on average, monthly sampling statistics are poor at best. As a result, the error reported is either the standard deviation of the mean or a floor single-sample precision estimate. |
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|
flag1 0: normal (this also applies to all flags that follow) 1: a single reference gas was used for calibration flag2 1: one or more sample injections occurred at subambient pressure flag3 1: precision > 2.5% of estimated concentration flag4 1: marked suspect by a loess-based statistical outlier algorithm flag5 1: single flask with missing paired partner flag6 1: paired partners disagree by more than twice their summed precisions flag7 1: sample excluded from monthly mean computations |
|
| Temporarily suspended | |
| value in the value_unc column means standard deviation of the mean (or single-sample precision value) | |
|
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: |
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Meteorological data may remain as first provided, even when greenhouse gas data are updated. |
No DOI available
Related information
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.
Debra J. Mondeel (NOAA),
J. David Nance (NOAA),
Stephen A. Montzka (NOAA),
Atmospheric SF6
at Alert by Global Monitoring Laboratory, NOAA,
dataset published as SF6_ALT4001_surface-flask_NOAA_hats-otto at WDCGG,
ver. 2025-08-21-1302 (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.
