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
2025-01-01-0002 (Last updated: 2024-12-25)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 | 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 |
| Name | Isaac Vimont |
|---|---|
| Prefix | Dr. |
| isaac.vimont@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 | |
| Fax | |
| Last updated date | 2025-09-09 |
| Background observation | |
| UTC | |
| ppt | |
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9999-12-31 00:00:00 - 9999-12-31 23:59:59: NOAA-2016-PR1 |
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9999-12-31 00:00:00 - 2015-08-24 23:59:59: M2(Gas chromatography (MS)) 2014-10-03 00:00:00 - 9999-12-31 23:59:59: PERSEUS-1(Gas chromatography (MS)) |
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| event | |
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Instrument 'PR1' mole fraction data supplied by I.J. Vimont (isaac.vimont@noaa.gov, 303.497.6044) from instrument PERSEUS-1 GC/MS analysis of stainless steel and/or glass flask pairs collected at the HATS remote sites. All mole fraction (*_C) and pair standard deviation (*_sd, 95% confidence interval) data reported as dry gas mole fractions in the following units and scale: Units: parts-per-trillion (ppt) Scale: NOAA-2016-PR1 M2 data notes: 25--Feb-19 "NOAA/ESRL/GMD flask data, supplied by S. Montzka (instrument = M2 results; stephen.a.montzka@noaa.gov) and Ben Miller (instrument = PR1 results; ben.r.miller@noaa.gov) for collaborative use (see the read.me file for more information)" M2 data have been scaled by a single factor, 0.9128, to make them consistent with PR1 data. |
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[Hourly] [Daily] [Monthly] |
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All mole fraction data have been filtered to require: a) two aliquots per flask with differences <= 0.4 ppt (95% confidence interval), and b) flask pair differences <= 0.4 ppt (95% confidence interval). All known analytical and/or sampling problem data have been omitted. Data which appear anomalously high or low, but for which we do not know of any analytical or sampling issues, have been given a '>' or '<' flag symbol, respectively, in an effort to produce our best guess as to the background values, which are denoted with flag '-'. |
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Valid (background): - Valid: > Valid: < |
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| Temporarily suspended | |
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Wind direction: 1 Wind speed: 1 Relative humidity: 0 Precipitation amount: 0 Air pressure: 0 Air temperature: 0 Dew point temperature: 0 Sea water temperature: 0 Sea surface water temperature: 0 Sea water salinity: 0 Sea surface water salinity: 0 |
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Meteorological data may remain as first provided, even when greenhouse gas data are updated. |
No DOI available
Related information
| Format | Text (WDCGG Data Format Table, WDCGG Meteorological Data Format Table), NetCDF | ||||
|---|---|---|---|---|---|
| Relation List (Is Part Of) |
All HFC-32 data contributed to WDCGG by GAW stations and mobiles by 2025-08-18 All HFC-32 data contributed to WDCGG by GAW stations and mobiles by 2024-08-22 All HFC-32 data contributed to WDCGG by GAW stations and mobiles by 2023-08-21 All HFC-32 data contributed to WDCGG by GAW stations and mobiles by 2022-08-23 All HFC-32 data contributed to WDCGG by GAW stations and mobiles by 2021-06-29 |
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| Geolocation Point |
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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.
Stephen A. Montzka (NOAA),
Isaac Vimont (NOAA),
Atmospheric HFC-32
at Barrow (AK) by Global Monitoring Laboratory, NOAA,
dataset published as HFC-32_BRW4003_surface-flask_NOAA_hats-gcms at WDCGG,
ver. 2025-01-01-0002 (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 | S. A. Montzka, J. H. Butler, R. C. Myers, T. M. Thompson, T. H. Swanson, A. D. Clarke, L. T. Lock, and J. W. Elkins, Decline in the tropospheric abundance of halogen from halocarbons: Implications for stratospheric ozone depletion, Science, 272, 1318-1322, 1996. |
|---|---|
| 2 | S. A. Montzka, J. H. Butler, J. W. Elkins, T. M. Thompson, A. D. Clarke, and L. T. Lock, Present and Future Trends in the Atmospheric Burden of Ozone-Depleting Halogens, Nature, 398, 690-694, 1999. |
| 3 | Montzka, S.A., B.D. Hall, J.W. Elkins, Accelerated increases observed for hydrochlorofluorocarbons since 2004 in the global atmosphere, Geophys. Res. Lett., 36, L03804, doi:10.1029/2008GL036475, 2009. |
| 4 | Montzka, S.A., R.C. Myers, J.H. Butler, and J.W. Elkins, Early trends in the global tropospheric abundance of hydrochlorofluorocarbon-141b and -142b, Geophys. Res. Lett., 21, 2483-2486, 1994. |
| 5 | Montzka, S.A., R.C. Myers, J.H. Butler, J.W. Elkins, and S.O. Cummings, Global tropospheric distribution and calibration scale of HCFC-22, Geophys Res. Lett., 20, 703-706, 1993. |
| 6 | Montzka, S.A., R.C. Myers, J.H. Butler, J.W. Elkins, L. Lock, A. Clarke, and A.H. Goldstein, Observations of HFC-134a in the remote troposphere, Geophys Res. Lett., 23, 169-172, 1996. |
| 7 | Montzka, S.A., M. McFarland, S.O. Andersen, B.R. Miller, D.W. Fahey, B.D. Hall, L. Hu, C. Siso, J.W. Elkins, Recent trends in global emissions of hydrochlorofluorocarbons and hydrofluorocarbons: Reflecting on the 2007 Adjustments to the Montreal Protocol, J. Phys. Chem. A, 119, 4439-4449, doi:10.1021/jp5097376, 2015. |
