# file: smo_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: SMO -- Tutuila, Samoa -- 14.25 S, 170.56 W, 42 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 "smo_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 # SF6ottoSMOyr SF6ottoSMOmon SF6ottoSMOm SF6ottoSMOsd SF6ottoSMOn 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 3.170 0.183 1 1995 1 3.199 0.143 2 1995 2 3.350 0.274 1 1995 3 3.245 0.181 3 1995 4 3.399 0.171 3 1995 5 3.360 0.227 1 1995 6 nan nan 0 1995 7 3.313 0.124 3 1995 8 3.318 0.247 2 1995 9 3.370 0.084 1 1995 10 3.373 0.063 3 1995 11 3.490 0.153 1 1995 12 3.580 0.106 1 1996 1 3.551 0.148 4 1996 2 3.640 0.068 1 1996 3 3.500 0.084 1 1996 4 3.494 0.093 3 1996 5 3.574 0.076 4 1996 6 3.625 0.098 5 1996 7 3.578 0.077 2 1996 8 3.658 0.076 3 1996 9 3.595 0.061 3 1996 10 3.617 0.081 2 1996 11 3.670 0.076 4 1996 12 3.744 0.064 2 1997 1 3.795 0.080 3 1997 2 3.723 0.080 2 1997 3 3.751 0.074 3 1997 4 3.763 0.077 3 1997 5 3.710 0.118 1 1997 6 3.786 0.068 5 1997 7 3.818 0.098 2 1997 8 3.833 0.052 4 1997 9 3.825 0.071 2 1997 10 3.876 0.056 2 1997 11 3.861 0.061 3 1997 12 3.909 0.050 3 1998 1 3.960 0.066 1 1998 2 3.929 0.081 2 1998 3 3.934 0.058 5 1998 4 3.923 0.069 2 1998 5 4.021 0.057 4 1998 6 4.072 0.050 3 1998 7 4.019 0.068 3 1998 8 4.043 0.053 4 1998 9 4.107 0.043 4 1998 10 4.143 0.046 3 1998 11 4.161 0.068 3 1998 12 4.180 0.073 2 1999 1 4.202 0.054 4 1999 2 4.239 0.045 5 1999 3 4.244 0.061 2 1999 4 4.272 0.089 2 1999 5 4.254 0.065 3 1999 6 4.285 0.065 4 1999 7 4.277 0.054 5 1999 8 4.332 0.067 4 1999 9 4.288 0.065 4 1999 10 4.319 0.059 4 1999 11 4.361 0.068 4 1999 12 4.374 0.054 4 2000 1 4.429 0.074 4 2000 2 4.448 0.050 3 2000 3 4.420 0.044 3 2000 4 4.429 0.051 4 2000 5 4.422 0.044 3 2000 6 4.441 0.047 4 2000 7 4.487 0.045 4 2000 8 4.525 0.053 4 2000 9 4.530 0.041 4 2000 10 4.516 0.047 4 2000 11 4.572 0.040 5 2000 12 4.559 0.047 2 2001 1 4.608 0.066 5 2001 2 4.664 0.044 3 2001 3 4.664 0.056 4 2001 4 4.657 0.048 2 2001 5 4.666 0.050 5 2001 6 4.704 0.053 4 2001 7 4.682 0.061 3 2001 8 4.724 0.045 5 2001 9 4.691 0.049 4 2001 10 4.792 0.039 4 2001 11 4.808 0.043 4 2001 12 4.778 0.054 3 2002 1 4.815 0.048 6 2002 2 4.870 0.067 4 2002 3 4.864 0.045 7 2002 4 4.864 0.052 4 2002 5 4.846 0.033 6 2002 6 4.915 0.048 7 2002 7 4.934 0.058 4 2002 8 4.921 0.047 5 2002 9 4.933 0.051 5 2002 10 4.990 0.057 6 2002 11 4.981 0.053 5 2002 12 4.988 0.060 4 2003 1 5.040 0.041 7 2003 2 5.036 0.043 4 2003 3 5.097 0.043 4 2003 4 5.130 0.051 6 2003 5 5.078 0.037 6 2003 6 5.098 0.055 5 2003 7 5.096 0.040 5 2003 8 5.171 0.048 5 2003 9 5.152 0.053 6 2003 10 5.175 0.043 5 2003 11 5.196 0.060 5 2003 12 5.288 0.084 4 2004 1 5.278 0.072 3 2004 2 5.307 0.052 5 2004 3 5.302 0.057 5 2004 4 5.283 0.066 6 2004 5 5.312 0.050 5 2004 6 5.309 0.048 6 2004 7 5.350 0.069 4 2004 8 5.415 0.069 4 2004 9 5.395 0.072 6 2004 10 5.377 0.077 4 2004 11 5.432 0.048 5 2004 12 5.452 0.042 4 2005 1 5.464 0.050 5 2005 2 5.496 0.036 5 2005 3 5.531 0.057 6 2005 4 5.488 0.069 4 2005 5 5.510 0.049 5 2005 6 5.516 0.041 6 2005 7 5.541 0.053 5 2005 8 5.577 0.046 6 2005 9 5.605 0.054 5 2005 10 5.606 0.045 5 2005 11 5.644 0.058 4 2005 12 5.665 0.059 5 2006 1 5.725 0.054 4 2006 2 5.773 0.045 5 2006 3 5.722 0.070 4 2006 4 5.759 0.052 4 2006 5 5.771 0.054 6 2006 6 5.807 0.068 4 2006 7 5.824 0.065 4 2006 8 5.839 0.062 7 2006 9 5.825 0.046 4 2006 10 5.879 0.059 5 2006 11 5.893 0.056 5 2006 12 5.899 0.043 5 2007 1 5.935 0.045 5 2007 2 5.979 0.053 4 2007 3 6.019 0.063 5 2007 4 6.011 0.050 4 2007 5 6.027 0.043 4 2007 6 6.026 0.046 4 2007 7 6.079 0.044 4 2007 8 6.110 0.045 6 2007 9 6.176 0.036 4 2007 10 6.145 0.036 5 2007 11 6.213 0.049 5 2007 12 6.184 0.053 5 2008 1 6.284 0.036 5 2008 2 6.266 0.047 5 2008 3 6.292 0.041 5 2008 4 6.303 0.035 6 2008 5 6.344 0.061 5 2008 6 6.315 0.045 5 2008 7 6.347 0.055 6 2008 8 6.362 0.051 5 2008 9 6.355 0.064 4 2008 10 6.373 0.055 6 2008 11 6.449 0.054 5 2008 12 6.468 0.040 5 2009 1 6.553 0.046 5 2009 2 6.552 0.062 4 2009 3 6.617 0.057 5 2009 4 6.609 0.064 6 2009 5 6.602 0.058 5 2009 6 6.592 0.061 4 2009 7 6.605 0.049 9 2009 8 6.652 0.052 6 2009 9 6.668 0.044 9 2009 10 6.708 0.040 3 2009 11 6.723 0.045 6 2009 12 6.758 0.046 6 2010 1 6.806 0.079 4 2010 2 6.804 0.077 4 2010 3 6.854 0.052 5 2010 4 nan nan 0 2010 5 nan nan 0 2010 6 6.940 0.089 1 2010 7 6.914 0.064 4 2010 8 6.972 0.063 4 2010 9 6.993 0.043 5 2010 10 6.950 0.057 4 2010 11 6.970 0.097 1 2010 12 7.046 0.058 4 2011 1 7.107 0.036 3 2011 2 7.120 0.076 2 2011 3 7.120 0.058 5 2011 4 7.075 0.051 3 2011 5 7.151 0.051 4 2011 6 7.162 0.074 3 2011 7 7.207 0.071 3 2011 8 7.202 0.056 3 2011 9 7.270 0.057 6 2011 10 7.296 0.054 5 2011 11 7.319 0.071 3 2011 12 7.347 0.067 2 2012 1 7.392 0.058 2 2012 2 7.420 0.054 4 2012 3 7.431 0.053 4 2012 4 7.386 0.050 4 2012 5 7.433 0.048 2 2012 6 7.465 0.052 3 2012 7 7.458 0.061 3 2012 8 7.476 0.050 3 2012 9 7.510 0.049 4 2012 10 7.534 0.069 5 2012 11 7.582 0.054 4 2012 12 7.578 0.054 4 2013 1 7.701 0.071 4 2013 2 7.700 0.050 5 2013 3 7.676 0.069 5 2013 4 7.793 0.072 3 2013 5 7.700 0.064 5 2013 6 7.708 0.054 4 2013 7 7.777 0.066 3 2013 8 7.785 0.066 3 2013 9 nan nan 0 2013 10 7.888 0.084 4 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