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NO 2
Acronym NOAA
Name Earth System Research Laboratory, NOAA
Address 1 R/GMD1
Address 2 NOAA/ESRL
Address 3 325 Broadway Boulder, CO 80305-3337
Country/Territory United States of America
Website https://www.esrl.noaa.gov/gmd/index.html


Name Stephen A. Montzka
Prefix Dr.
Email Stephen.A.Montzka@noaa.gov
Organization No 2
Organization acronym NOAA
Organization name Earth System Research 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 2021-06-27

 Background observation
 9999-12-31 00:00:00 - 9999-12-31 23:59:59: NOAA-2018-PR1
 9999-12-31 00:00:00 - 2015-02-08 23:59:59: M2(Gas chromatography (MS))
 2014-02-24 00:00:00 - 9999-12-31 23:59:59: PERSEUS-1(Gas chromatography (MS))
 Instrument 'PR1' mole fraction data supplied by B. R. Miller (ben.r.miller@noaa.gov, 303.497.6624)
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-2018-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, 1.0397, to make them consistent with PR1 data.
 All mole fraction data have been filtered to require:
a) two aliquots per flask with differences <= 0.2 ppt (95% confidence interval), and
b) flask pair differences <= 0.2 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 '-'.
 Valid (background): -
 Valid: >
 Valid: <
 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
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-125 data contributed to WDCGG by GAW stations and mobiles by 2021-06-29
Geolocation Point
Latitude (north: +; south: -) -89.9969482422
Longitude (east: +; west: -) -24.7999992371


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.