# file: mlo_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: MLO -- Mauna Loa, Hawaii -- 19.54 N, 155.58 W, 3397 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 "mlo_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 # SF6ottoMLOyr SF6ottoMLOmon SF6ottoMLOm SF6ottoMLOsd SF6ottoMLOn 1994 1 nan nan 0 1994 2 nan nan 0 1994 3 nan nan 0 1994 4 nan nan 0 1994 5 nan nan 0 1994 6 nan nan 0 1994 7 nan nan 0 1994 8 nan nan 0 1994 9 nan nan 0 1994 10 nan nan 0 1994 11 nan nan 0 1994 12 3.500 0.186 1 1995 1 nan nan 0 1995 2 3.486 0.207 3 1995 3 3.340 0.302 1 1995 4 3.500 0.190 4 1995 5 3.530 0.194 3 1995 6 3.438 0.219 2 1995 7 3.649 0.188 3 1995 8 3.608 0.373 2 1995 9 3.530 0.105 1 1995 10 3.607 0.084 4 1995 11 3.580 0.064 5 1995 12 3.695 0.096 3 1996 1 3.647 0.049 5 1996 2 3.692 0.119 3 1996 3 3.746 0.088 4 1996 4 3.791 0.055 4 1996 5 3.740 0.068 4 1996 6 3.812 0.060 5 1996 7 3.744 0.094 2 1996 8 3.792 0.054 4 1996 9 3.785 0.072 4 1996 10 3.852 0.089 4 1996 11 3.826 0.097 4 1996 12 3.890 0.063 5 1997 1 3.970 0.127 2 1997 2 3.920 0.082 3 1997 3 3.939 0.070 5 1997 4 3.971 0.084 3 1997 5 3.970 0.066 3 1997 6 3.926 0.081 4 1997 7 3.997 0.083 3 1997 8 4.066 0.059 4 1997 9 4.128 0.033 2 1997 10 4.092 0.062 4 1997 11 4.090 0.064 2 1997 12 4.121 0.069 5 1998 1 4.100 0.060 4 1998 2 4.113 0.077 3 1998 3 4.142 0.063 4 1998 4 4.203 0.088 3 1998 5 4.274 0.049 5 1998 6 4.250 0.064 3 1998 7 4.203 0.051 5 1998 8 4.229 0.061 5 1998 9 4.323 0.088 3 1998 10 4.306 0.044 3 1998 11 4.322 0.068 4 1998 12 4.327 0.054 4 1999 1 4.372 0.047 4 1999 2 4.363 0.062 5 1999 3 4.370 0.062 4 1999 4 4.369 0.076 3 1999 5 4.392 0.059 4 1999 6 4.448 0.063 5 1999 7 4.383 0.082 4 1999 8 4.415 0.072 5 1999 9 4.484 0.083 3 1999 10 4.534 0.063 4 1999 11 4.526 0.057 4 1999 12 4.555 0.057 5 2000 1 4.573 0.067 4 2000 2 4.500 0.064 5 2000 3 4.560 0.057 3 2000 4 4.593 0.060 3 2000 5 4.601 0.061 4 2000 6 4.606 0.051 4 2000 7 4.624 0.055 4 2000 8 4.629 0.056 4 2000 9 4.683 0.065 4 2000 10 4.715 0.046 4 2000 11 4.729 0.073 4 2000 12 4.740 0.047 3 2001 1 4.759 0.054 3 2001 2 4.737 0.047 4 2001 3 4.796 0.039 4 2001 4 4.822 0.062 4 2001 5 4.850 0.068 3 2001 6 4.830 0.069 4 2001 7 4.877 0.051 3 2001 8 4.847 0.072 3 2001 9 4.883 0.066 4 2001 10 4.892 0.054 3 2001 11 4.940 0.040 4 2001 12 4.987 0.065 3 2002 1 4.897 0.061 3 2002 2 4.979 0.058 3 2002 3 4.973 0.074 5 2002 4 5.029 0.059 4 2002 5 5.016 0.061 4 2002 6 5.065 0.059 5 2002 7 5.024 0.072 4 2002 8 5.097 0.059 4 2002 9 5.071 0.045 5 2002 10 5.108 0.070 4 2002 11 5.176 0.072 4 2002 12 5.134 0.038 5 2003 1 5.197 0.058 3 2003 2 5.232 0.059 4 2003 3 5.242 0.064 5 2003 4 5.269 0.051 4 2003 5 5.227 0.065 6 2003 6 5.268 0.056 6 2003 7 5.293 0.073 4 2003 8 5.260 0.064 3 2003 9 5.323 0.076 5 2003 10 5.337 0.059 4 2003 11 5.373 0.054 4 2003 12 5.417 0.050 4 2004 1 5.388 0.033 3 2004 2 5.430 0.053 5 2004 3 5.458 0.050 4 2004 4 5.527 0.041 4 2004 5 5.526 0.060 4 2004 6 5.504 0.066 5 2004 7 5.546 0.069 3 2004 8 5.514 0.072 4 2004 9 5.576 0.058 5 2004 10 5.590 0.037 3 2004 11 5.588 0.070 4 2004 12 5.645 0.025 5 2005 1 5.622 0.044 4 2005 2 5.646 0.058 4 2005 3 5.700 0.044 5 2005 4 5.666 0.059 4 2005 5 5.721 0.051 5 2005 6 5.708 0.065 4 2005 7 5.729 0.052 4 2005 8 5.753 0.063 5 2005 9 5.774 0.047 4 2005 10 5.818 0.055 4 2005 11 5.864 0.055 4 2005 12 5.845 0.062 4 2006 1 5.843 0.051 4 2006 2 5.839 0.047 5 2006 3 5.870 0.057 4 2006 4 5.956 0.045 4 2006 5 5.987 0.050 4 2006 6 5.953 0.040 4 2006 7 5.986 0.068 3 2006 8 5.956 0.047 5 2006 9 6.020 0.067 4 2006 10 6.096 0.068 4 2006 11 6.055 0.068 5 2006 12 6.128 0.055 4 2007 1 6.105 0.048 4 2007 2 6.152 0.055 5 2007 3 6.143 0.061 3 2007 4 6.202 0.045 4 2007 5 6.229 0.077 4 2007 6 6.274 0.051 4 2007 7 6.250 0.052 4 2007 8 6.300 0.056 5 2007 9 6.322 0.055 4 2007 10 6.376 0.079 3 2007 11 6.366 0.085 5 2007 12 6.405 0.052 4 2008 1 6.437 0.083 4 2008 2 6.420 0.051 5 2008 3 6.465 0.048 4 2008 4 6.491 0.065 5 2008 5 6.526 0.061 4 2008 6 6.551 0.059 4 2008 7 6.518 0.064 5 2008 8 6.602 0.070 4 2008 9 6.600 0.043 4 2008 10 6.692 0.061 5 2008 11 6.661 0.050 3 2008 12 6.681 0.065 4 2009 1 6.731 0.050 5 2009 2 6.748 0.060 4 2009 3 6.737 0.053 3 2009 4 6.815 0.058 5 2009 5 6.840 0.079 4 2009 6 6.872 0.063 4 2009 7 6.862 0.054 5 2009 8 6.842 0.041 2 2009 9 6.920 0.066 5 2009 10 6.929 0.055 4 2009 11 6.966 0.036 4 2009 12 6.963 0.042 4 2010 1 6.946 0.055 4 2010 2 7.034 0.095 4 2010 3 7.080 0.058 5 2010 4 7.139 0.069 3 2010 5 7.115 0.059 5 2010 6 7.085 0.045 4 2010 7 7.158 0.069 4 2010 8 7.206 0.057 5 2010 9 7.242 0.060 4 2010 10 7.261 0.062 4 2010 11 7.294 0.046 4 2010 12 7.214 0.072 4 2011 1 7.330 0.077 4 2011 2 7.313 0.047 4 2011 3 7.299 0.085 4 2011 4 7.359 0.057 3 2011 5 7.350 0.072 4 2011 6 7.428 0.073 4 2011 7 7.448 0.070 4 2011 8 7.410 0.081 5 2011 9 7.511 0.085 4 2011 10 7.510 0.060 4 2011 11 7.532 0.069 5 2011 12 7.577 0.062 4 2012 1 7.603 0.055 3 2012 2 7.626 0.061 3 2012 3 7.616 0.060 4 2012 4 7.690 0.043 5 2012 5 7.689 0.085 3 2012 6 7.672 0.064 4 2012 7 7.667 0.044 5 2012 8 7.705 0.074 4 2012 9 7.729 0.050 3 2012 10 7.807 0.059 5 2012 11 7.837 0.082 4 2012 12 7.859 0.063 4 2013 1 7.828 0.058 4 2013 2 7.857 0.081 4 2013 3 7.971 0.048 4 2013 4 7.954 0.055 5 2013 5 8.015 0.060 4 2013 6 7.975 0.058 3 2013 7 8.000 0.083 4 2013 8 8.096 0.081 3 2013 9 8.071 0.237 3 2013 10 8.179 0.054 2 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