# file: thd_SF6_MM.dat # # Atmospheric measurements of SF6 (Sulphur Hexaflouride) # # Measurements are from the NOAA/ESRL/GMD/HATS flask program # (http://www.esrl.noaa.gov/gmd/hats/flask/flasks.html). # Instrument ID: Otto # # Location: THD -- Trinidad Head, California -- 41.05 N, 124.15 W, 107 m Elev. # See http://www.esrl.noaa.gov/gmd/dv/site/site_table.html#hats_flask for # more information about flask sampling sites. # # The data reported are from samples collected approximately once per week in # matching, concurrent, flask pairs and later analyzed on a gas chromatograph # with electron capture detection (GC-ECD) located in Boulder, Colorado, USA. # This system uses two standard reference gases for calibration and has been # in operation since very early in 1995. # # These data represent monthly mean estimates computed using those data marked # with a 0 in flag column 7 of the companion file named "thd_SF6_All.dat". 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. # # PIs: Dr. James W. Elkins, Dr. Bradley D. Hall, # Debra J. Mondeel, J. David Nance # # National Oceanic and Atmospheric Administration (NOAA) # Earth System Research Laboratory (ESRL) # 325 Broadway, R/GMD1 # Boulder, CO 80305-3328 # # Email: James.W.Elkins@noaa.gov; Bradley.Hall@noaa.gov # Phone: (303) 497-6224 (303) 497-7011 # # Email: Debra.J.Mondeel@noaa.gov; David.Nance@noaa.gov # Phone: (303) 497-6013 (303) 497-7002 # # Fax: (303) 497-6290 # # Data use policy: # If you use this data in a publication or report, we would appreciate that you # contact the principal investigators (PIs) first and discuss your interests. # The PIs can discuss the quality of the data and any potential problems with # its analysis. Please contact the PIs for more information. The data should # be cited in presentations or publications along the following lines: Sulphur Hexaflouride # data from the NOAA/ESRL halocarbons flask program. # # Calibration scale: NOAA 2014 # See http://www.esrl.noaa.gov/gmd/ccl/scales.html for more information about # calibration scales. # # Units: ppt # # Missing value: "nan" # # Data Columns: # yr Year # mon Month # m Monthly mean concentration of SF6 in ppt # sd Standard deviation of the mean (or single-sample precision value) # n Number of samples # SF6ottoTHDyr SF6ottoTHDmon SF6ottoTHDm SF6ottoTHDsd SF6ottoTHDn 2002 1 nan nan 0 2002 2 5.140 0.048 1 2002 3 5.077 0.070 4 2002 4 5.158 0.047 6 2002 5 5.139 0.048 8 2002 6 5.199 0.079 4 2002 7 5.127 0.053 5 2002 8 5.171 0.075 4 2002 9 5.175 0.072 4 2002 10 5.295 0.069 5 2002 11 5.275 0.124 4 2002 12 5.308 0.070 3 2003 1 5.279 0.065 4 2003 2 5.335 0.047 4 2003 3 5.457 0.100 4 2003 4 5.345 0.050 4 2003 5 5.419 0.059 6 2003 6 5.459 0.046 6 2003 7 5.423 0.066 5 2003 8 5.422 0.082 4 2003 9 5.447 0.073 4 2003 10 5.431 0.041 5 2003 11 5.513 0.044 4 2003 12 5.525 0.063 4 2004 1 5.539 0.064 3 2004 2 5.566 0.067 4 2004 3 5.551 0.051 5 2004 4 5.599 0.048 4 2004 5 5.584 0.072 4 2004 6 5.605 0.050 5 2004 7 5.575 0.056 4 2004 8 5.649 0.057 3 2004 9 5.606 0.053 4 2004 10 5.621 0.109 4 2004 11 5.778 0.062 4 2004 12 5.728 0.067 5 2005 1 5.697 0.057 3 2005 2 5.782 0.057 4 2005 3 5.793 0.064 4 2005 4 5.765 0.035 4 2005 5 5.782 0.063 5 2005 6 5.846 0.066 4 2005 7 5.860 0.072 4 2005 8 5.827 0.054 5 2005 9 5.865 0.056 4 2005 10 5.873 0.068 4 2005 11 5.888 0.043 3 2005 12 5.982 0.044 3 2006 1 5.961 0.059 3 2006 2 6.037 0.065 4 2006 3 6.020 0.081 2 2006 4 6.045 0.063 4 2006 5 6.103 0.055 5 2006 6 6.083 0.063 4 2006 7 6.095 0.044 4 2006 8 6.113 0.036 5 2006 9 6.112 0.056 4 2006 10 6.111 0.057 4 2006 11 6.187 0.058 5 2006 12 6.224 0.074 3 2007 1 6.226 0.050 3 2007 2 6.234 0.043 4 2007 3 6.252 0.054 3 2007 4 6.305 0.070 4 2007 5 6.345 0.062 3 2007 6 6.407 0.060 4 2007 7 6.402 0.058 4 2007 8 6.399 0.058 3 2007 9 6.386 0.030 3 2007 10 6.410 0.053 4 2007 11 6.495 0.051 3 2007 12 6.437 0.052 3 2008 1 6.514 0.033 3 2008 2 6.530 0.057 5 2008 3 6.599 0.077 3 2008 4 6.602 0.063 4 2008 5 6.632 0.063 4 2008 6 6.669 0.055 5 2008 7 6.671 0.048 4 2008 8 6.693 0.063 4 2008 9 6.690 0.051 4 2008 10 6.746 0.056 3 2008 11 6.822 0.051 5 2008 12 6.802 0.063 4 2009 1 6.773 0.057 4 2009 2 6.819 0.038 5 2009 3 6.824 0.039 3 2009 4 6.903 0.046 4 2009 5 6.845 0.070 3 2009 6 6.891 0.059 4 2009 7 6.950 0.043 4 2009 8 6.949 0.059 5 2009 9 6.986 0.046 3 2009 10 7.028 0.056 3 2009 11 7.019 0.056 4 2009 12 7.064 0.074 4 2010 1 7.073 0.068 3 2010 2 7.171 0.059 4 2010 3 7.162 0.055 4 2010 4 7.197 0.047 4 2010 5 7.198 0.058 4 2010 6 7.325 0.150 3 2010 7 7.252 0.085 5 2010 8 7.262 0.074 3 2010 9 7.239 0.057 2 2010 10 7.329 0.060 5 2010 11 7.337 0.045 2 2010 12 7.362 0.050 4 2011 1 7.367 0.067 3 2011 2 7.378 0.048 4 2011 3 7.468 0.056 4 2011 4 7.456 0.035 4 2011 5 7.524 0.058 4 2011 6 7.544 0.071 3 2011 7 7.521 0.037 4 2011 8 7.511 0.058 4 2011 9 7.635 0.059 4 2011 10 7.635 0.056 3 2011 11 7.626 0.070 3 2011 12 7.671 0.059 3 2012 1 7.740 0.108 1 2012 2 7.681 0.055 4 2012 3 7.752 0.064 2 2012 4 7.704 0.051 4 2012 5 7.787 0.066 4 2012 6 7.750 0.044 5 2012 7 7.782 0.065 3 2012 8 7.835 0.069 3 2012 9 7.828 0.073 4 2012 10 7.917 0.083 4 2012 11 7.893 0.078 4 2012 12 7.979 0.061 3 2013 1 8.030 0.057 1 2013 2 8.038 0.053 4 2013 3 8.033 0.056 5 2013 4 8.103 0.065 4 2013 5 8.105 0.050 3 2013 6 8.154 0.061 4 2013 7 8.188 0.065 3 2013 8 8.249 0.127 2 2013 9 nan nan 0 2013 10 nan nan 0 2013 11 nan nan 0 2013 12 nan nan 0 2014 1 nan nan 0 2014 2 nan nan 0 2014 3 nan nan 0 2014 4 nan nan 0 2014 5 nan nan 0 2014 6 nan nan 0 2014 7 nan nan 0 2014 8 nan nan 0 2014 9 nan nan 0 2014 10 nan nan 0 2014 11 nan nan 0 2014 12 nan nan 0 2015 1 nan nan 0 2015 2 nan nan 0 2015 3 nan nan 0 2015 4 nan nan 0 2015 5 nan nan 0 2015 6 nan nan 0 2015 7 nan nan 0 2015 8 nan nan 0 2015 9 nan nan 0 2015 10 nan nan 0 2015 11 nan nan 0 2015 12 nan nan 0 2016 1 nan nan 0 2016 2 nan nan 0 2016 3 nan nan 0 2016 4 nan nan 0 2016 5 nan nan 0 2016 6 nan nan 0 2016 7 nan nan 0 2016 8 nan nan 0 2016 9 nan nan 0 2016 10 nan nan 0 2016 11 nan nan 0 2016 12 nan nan 0