# file: brw_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: BRW -- Barrow, Alaska -- 71.32 N, 156.61 W, 11 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 "brw_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 # SF6ottoBRWyr SF6ottoBRWmon SF6ottoBRWm SF6ottoBRWsd SF6ottoBRWn 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 3.670 0.144 1 1995 1 nan nan 0 1995 2 3.550 0.273 1 1995 3 3.686 0.182 3 1995 4 3.642 0.205 2 1995 5 3.654 0.250 2 1995 6 3.670 0.181 2 1995 7 nan nan 0 1995 8 3.716 0.259 3 1995 9 3.710 0.062 3 1995 10 3.752 0.062 3 1995 11 3.796 0.062 2 1995 12 3.780 0.100 1 1996 1 3.862 0.076 3 1996 2 3.902 0.048 4 1996 3 3.964 0.118 2 1996 4 3.920 0.075 4 1996 5 3.970 0.063 5 1996 6 3.980 0.082 4 1996 7 3.910 0.108 4 1996 8 3.985 0.067 3 1996 9 3.918 0.073 4 1996 10 3.987 0.093 4 1996 11 4.033 0.084 4 1996 12 4.065 0.074 4 1997 1 4.093 0.088 4 1997 2 4.080 0.076 4 1997 3 4.058 0.073 4 1997 4 4.143 0.071 4 1997 5 4.155 0.089 4 1997 6 4.162 0.098 3 1997 7 4.180 0.087 3 1997 8 4.168 0.042 4 1997 9 nan nan 0 1997 10 4.189 0.056 5 1997 11 4.278 0.050 3 1997 12 4.259 0.049 4 1998 1 4.327 0.047 4 1998 2 4.280 0.067 2 1998 3 4.293 0.059 4 1998 4 4.307 0.055 3 1998 5 4.307 0.049 4 1998 6 4.316 0.073 2 1998 7 4.356 0.035 5 1998 8 4.371 0.045 4 1998 9 4.355 0.062 3 1998 10 4.351 0.054 3 1998 11 4.404 0.058 4 1998 12 4.484 0.072 4 1999 1 4.481 0.053 5 1999 2 4.510 0.053 4 1999 3 4.435 0.073 3 1999 4 4.511 0.073 4 1999 5 4.484 0.074 3 1999 6 4.495 0.088 3 1999 7 4.542 0.065 4 1999 8 4.479 0.057 4 1999 9 4.516 0.086 3 1999 10 4.561 0.061 5 1999 11 4.583 0.075 2 1999 12 4.653 0.065 4 2000 1 4.667 0.060 3 2000 2 4.685 0.064 4 2000 3 4.617 0.047 4 2000 4 4.685 0.044 3 2000 5 4.715 0.047 4 2000 6 4.732 0.055 4 2000 7 4.762 0.061 4 2000 8 4.785 0.082 3 2000 9 4.785 0.042 4 2000 10 4.807 0.051 4 2000 11 4.799 0.045 4 2000 12 4.851 0.045 5 2001 1 4.875 0.051 3 2001 2 4.868 0.041 4 2001 3 4.916 0.057 3 2001 4 4.944 0.060 3 2001 5 4.947 0.049 4 2001 6 4.930 0.055 5 2001 7 4.955 0.060 4 2001 8 4.919 0.069 4 2001 9 4.951 0.065 4 2001 10 5.001 0.072 3 2001 11 5.010 0.059 5 2001 12 5.110 0.064 1 2002 1 5.065 0.045 4 2002 2 5.093 0.054 3 2002 3 5.109 0.058 5 2002 4 5.117 0.051 2 2002 5 5.141 0.042 4 2002 6 5.175 0.067 3 2002 7 5.140 0.061 3 2002 8 5.170 0.050 2 2002 9 5.182 0.049 2 2002 10 5.187 0.070 4 2002 11 5.254 0.051 5 2002 12 5.286 0.073 2 2003 1 5.272 0.044 2 2003 2 5.356 0.045 5 2003 3 5.349 0.063 3 2003 4 5.364 0.057 2 2003 5 5.418 0.058 7 2003 6 5.440 0.071 3 2003 7 5.473 0.058 3 2003 8 5.389 0.053 5 2003 9 5.424 0.062 4 2003 10 5.450 0.064 5 2003 11 5.520 0.058 4 2003 12 5.559 0.059 3 2004 1 5.556 0.061 4 2004 2 5.572 0.057 3 2004 3 5.538 0.053 5 2004 4 5.595 0.057 5 2004 5 5.550 0.090 1 2004 6 5.576 0.049 4 2004 7 5.593 0.051 4 2004 8 5.625 0.085 4 2004 9 5.618 0.067 4 2004 10 5.660 0.095 4 2004 11 5.698 0.084 4 2004 12 5.758 0.060 3 2005 1 5.749 0.065 5 2005 2 5.785 0.046 4 2005 3 5.783 0.050 5 2005 4 5.762 0.054 4 2005 5 5.800 0.059 4 2005 6 5.815 0.055 5 2005 7 5.821 0.068 4 2005 8 5.821 0.060 3 2005 9 5.863 0.062 5 2005 10 5.849 0.069 4 2005 11 5.892 0.046 4 2005 12 5.952 0.057 5 2006 1 5.953 0.059 3 2006 2 5.977 0.052 4 2006 3 6.029 0.056 4 2006 4 6.015 0.056 4 2006 5 6.015 0.062 4 2006 6 6.040 0.055 4 2006 7 6.071 0.061 4 2006 8 6.067 0.037 5 2006 9 6.056 0.059 4 2006 10 6.093 0.040 4 2006 11 6.192 0.036 4 2006 12 6.221 0.061 4 2007 1 6.210 0.066 2 2007 2 6.218 0.062 4 2007 3 6.253 0.083 4 2007 4 6.297 0.066 4 2007 5 6.365 0.065 2 2007 6 6.338 0.044 3 2007 7 6.374 0.053 2 2007 8 6.395 0.058 2 2007 9 6.380 0.050 4 2007 10 6.397 0.046 4 2007 11 6.464 0.052 2 2007 12 6.463 0.066 3 2008 1 6.489 0.043 2 2008 2 6.563 0.053 4 2008 3 6.540 0.091 1 2008 4 6.578 0.063 2 2008 5 6.631 0.077 5 2008 6 6.661 0.052 4 2008 7 6.673 0.048 4 2008 8 6.653 0.054 2 2008 9 6.658 0.067 2 2008 10 6.711 0.044 4 2008 11 6.775 0.050 3 2008 12 6.783 0.073 5 2009 1 6.859 0.045 4 2009 2 6.797 0.061 4 2009 3 6.867 0.064 3 2009 4 6.920 0.045 2 2009 5 6.884 0.076 4 2009 6 6.922 0.062 4 2009 7 6.968 0.054 4 2009 8 6.955 0.049 4 2009 9 6.945 0.037 5 2009 10 6.983 0.036 3 2009 11 7.004 0.043 5 2009 12 7.036 0.041 4 2010 1 7.086 0.043 5 2010 2 7.090 0.064 4 2010 3 7.142 0.062 4 2010 4 7.188 0.069 5 2010 5 7.213 0.051 4 2010 6 7.206 0.051 4 2010 7 7.236 0.052 5 2010 8 7.288 0.060 4 2010 9 7.222 0.046 3 2010 10 7.285 0.056 4 2010 11 7.309 0.059 4 2010 12 7.377 0.044 5 2011 1 7.378 0.064 3 2011 2 7.423 0.075 3 2011 3 7.460 0.059 4 2011 4 7.436 0.056 4 2011 5 7.466 0.054 3 2011 6 7.475 0.045 4 2011 7 7.525 0.063 5 2011 8 7.518 0.060 3 2011 9 7.583 0.066 3 2011 10 7.595 0.057 4 2011 11 7.619 0.049 5 2011 12 7.713 0.053 2 2012 1 7.673 0.078 3 2012 2 7.687 0.056 4 2012 3 7.705 0.049 3 2012 4 7.686 0.051 3 2012 5 7.764 0.066 5 2012 6 7.759 0.039 4 2012 7 7.796 0.057 4 2012 8 7.787 0.049 5 2012 9 7.784 0.054 4 2012 10 7.814 0.054 4 2012 11 7.878 0.038 5 2012 12 7.928 0.042 5 2013 1 7.964 0.054 4 2013 2 8.016 0.055 4 2013 3 7.975 0.050 4 2013 4 8.035 0.066 4 2013 5 8.059 0.039 4 2013 6 8.093 0.059 4 2013 7 8.143 0.057 5 2013 8 8.156 0.051 4 2013 9 8.166 0.063 3 2013 10 8.230 0.078 1 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