# file: sum_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: SUM -- Summit, Greenland -- 72.58 N, 38.48 W, 3217.54 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 "sum_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 # SF6ottoSUMyr SF6ottoSUMmon SF6ottoSUMm SF6ottoSUMsd SF6ottoSUMn 2004 1 nan nan 0 2004 2 nan nan 0 2004 3 nan nan 0 2004 4 nan nan 0 2004 5 nan nan 0 2004 6 5.584 0.076 2 2004 7 5.607 0.062 2 2004 8 5.620 0.095 1 2004 9 5.631 0.144 2 2004 10 5.706 0.121 2 2004 11 5.709 0.056 3 2004 12 5.694 0.051 2 2005 1 5.688 0.057 2 2005 2 5.706 0.050 2 2005 3 5.719 0.064 2 2005 4 5.797 0.062 2 2005 5 5.758 0.071 2 2005 6 5.807 0.060 2 2005 7 nan nan 0 2005 8 5.830 0.056 4 2005 9 nan nan 0 2005 10 5.876 0.083 2 2005 11 5.905 0.065 2 2005 12 6.040 0.162 1 2006 1 5.981 0.113 2 2006 2 6.020 0.051 2 2006 3 5.970 0.059 1 2006 4 5.996 0.054 2 2006 5 6.093 0.058 4 2006 6 6.066 0.065 3 2006 7 nan nan 0 2006 8 6.075 0.061 2 2006 9 6.100 0.086 1 2006 10 6.133 0.072 2 2006 11 6.220 0.115 1 2006 12 6.229 0.061 2 2007 1 6.206 0.078 2 2007 2 6.230 0.074 2 2007 3 6.244 0.060 2 2007 4 6.350 0.067 1 2007 5 6.330 0.057 2 2007 6 6.381 0.065 2 2007 7 6.389 0.069 3 2007 8 6.345 0.054 4 2007 9 6.350 0.057 5 2007 10 6.339 0.064 2 2007 11 6.460 0.070 2 2007 12 6.475 0.067 2 2008 1 6.547 0.053 2 2008 2 6.560 0.075 2 2008 3 6.533 0.071 2 2008 4 6.571 0.056 2 2008 5 6.670 0.064 2 2008 6 6.633 0.071 6 2008 7 6.644 0.054 4 2008 8 6.664 0.066 4 2008 9 6.707 0.051 3 2008 10 6.710 0.070 2 2008 11 6.766 0.072 2 2008 12 6.789 0.041 2 2009 1 6.778 0.066 2 2009 2 6.830 0.046 1 2009 3 6.926 0.053 2 2009 4 6.882 0.071 2 2009 5 6.910 0.051 2 2009 6 6.913 0.050 2 2009 7 6.933 0.075 5 2009 8 6.948 0.039 5 2009 9 6.941 0.049 4 2009 10 6.952 0.046 2 2009 11 7.012 0.037 2 2009 12 7.072 0.141 2 2010 1 7.120 0.053 2 2010 2 7.150 0.083 2 2010 3 7.122 0.076 2 2010 4 7.156 0.134 2 2010 5 7.172 0.080 2 2010 6 7.178 0.091 2 2010 7 7.189 0.043 3 2010 8 7.245 0.067 5 2010 9 7.227 0.041 4 2010 10 7.237 0.057 2 2010 11 7.316 0.062 2 2010 12 7.336 0.134 2 2011 1 7.326 0.062 2 2011 2 7.320 0.071 2 2011 3 7.421 0.079 2 2011 4 7.420 0.070 2 2011 5 7.496 0.069 2 2011 6 7.535 0.071 2 2011 7 7.490 0.061 5 2011 8 7.529 0.040 3 2011 9 7.503 0.062 4 2011 10 7.520 0.088 1 2011 11 7.640 0.069 1 2011 12 7.614 0.065 2 2012 1 7.611 0.060 2 2012 2 7.651 0.045 2 2012 3 7.700 0.052 2 2012 4 7.736 0.056 2 2012 5 7.731 0.053 2 2012 6 7.736 0.092 2 2012 7 7.748 0.047 5 2012 8 7.771 0.062 4 2012 9 7.755 0.063 4 2012 10 7.816 0.066 2 2012 11 7.918 0.061 2 2012 12 7.930 0.105 1 2013 1 7.930 0.073 1 2013 2 8.020 0.073 1 2013 3 nan nan 0 2013 4 nan nan 0 2013 5 8.060 0.081 1 2013 6 nan nan 0 2013 7 8.081 0.067 3 2013 8 8.081 0.139 3 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