# file: thd_F113_MM.dat # # Atmospheric measurements of Cl2FC-CClF2 (CFC-113, Freon-113, F113) # # 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_F113_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: CFC-113 # data from the NOAA/ESRL halocarbons flask program. # # Calibration scale: NOAA 2003 # 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 F113 in ppt # sd Standard deviation of the mean (or single-sample precision value) # n Number of samples # F113ottoTHDyr F113ottoTHDmon F113ottoTHDm F113ottoTHDsd F113ottoTHDn 2002 1 nan nan 0 2002 2 82.950 0.217 1 2002 3 82.935 0.170 4 2002 4 82.866 0.159 6 2002 5 82.618 0.301 8 2002 6 82.394 0.189 4 2002 7 82.346 0.258 5 2002 8 82.035 0.200 4 2002 9 82.229 0.209 4 2002 10 82.186 0.181 5 2002 11 82.272 0.242 4 2002 12 82.495 0.147 3 2003 1 82.248 0.194 4 2003 2 82.369 0.139 4 2003 3 82.154 0.243 2 2003 4 82.161 0.191 4 2003 5 81.644 0.191 6 2003 6 81.666 0.153 6 2003 7 81.546 0.366 5 2003 8 81.465 0.274 4 2003 9 81.224 0.248 4 2003 10 81.345 0.148 5 2003 11 81.223 0.216 3 2003 12 81.486 0.116 4 2004 1 81.646 0.195 4 2004 2 81.475 0.173 4 2004 3 81.301 0.118 5 2004 4 81.204 0.130 4 2004 5 81.031 0.279 3 2004 6 80.841 0.189 5 2004 7 80.704 0.202 4 2004 8 80.815 0.169 3 2004 9 80.589 0.298 5 2004 10 80.654 0.256 4 2004 11 80.509 0.175 4 2004 12 80.628 0.178 5 2005 1 81.006 0.250 3 2005 2 80.747 0.287 4 2005 3 80.677 0.279 4 2005 4 80.811 0.198 4 2005 5 80.520 0.187 5 2005 6 80.561 0.486 4 2005 7 80.443 0.277 4 2005 8 80.328 0.249 5 2005 9 80.009 0.207 4 2005 10 80.031 0.538 4 2005 11 80.104 0.240 3 2005 12 80.174 0.300 3 2006 1 80.173 0.239 2 2006 2 80.149 0.365 3 2006 3 80.413 0.170 2 2006 4 79.945 0.222 4 2006 5 79.820 0.209 5 2006 6 79.677 0.299 4 2006 7 79.290 0.383 3 2006 8 79.274 0.214 5 2006 9 79.137 0.254 4 2006 10 79.413 0.224 4 2006 11 79.285 0.158 5 2006 12 79.063 0.431 3 2007 1 79.637 0.219 3 2007 2 79.554 0.184 4 2007 3 79.434 0.190 4 2007 4 79.278 0.466 4 2007 5 78.821 0.314 3 2007 6 78.921 0.184 4 2007 7 78.511 0.241 4 2007 8 78.282 0.213 3 2007 9 78.063 0.186 3 2007 10 78.284 0.160 4 2007 11 78.479 0.207 3 2007 12 78.547 0.346 2 2008 1 78.260 0.476 2 2008 2 78.505 0.270 5 2008 3 78.679 0.200 3 2008 4 78.575 0.162 4 2008 5 77.912 0.430 4 2008 6 78.110 0.147 5 2008 7 77.942 0.300 4 2008 8 77.741 0.207 4 2008 9 77.885 0.174 4 2008 10 77.700 0.136 4 2008 11 77.915 0.190 5 2008 12 77.897 0.205 4 2009 1 78.073 0.158 4 2009 2 77.716 0.203 5 2009 3 77.922 0.140 3 2009 4 77.428 0.291 4 2009 5 77.414 0.144 3 2009 6 77.346 0.196 4 2009 7 77.205 0.189 3 2009 8 77.021 0.213 5 2009 9 76.548 0.192 3 2009 10 76.764 0.219 3 2009 11 76.995 0.217 4 2009 12 77.072 0.187 4 2010 1 76.927 0.189 2 2010 2 76.874 0.205 3 2010 3 76.794 0.333 4 2010 4 76.920 0.220 4 2010 5 76.868 0.363 4 2010 6 76.487 0.254 4 2010 7 76.233 0.145 5 2010 8 76.009 0.211 2 2010 9 76.566 0.412 3 2010 10 76.079 0.158 5 2010 11 76.062 0.424 2 2010 12 76.458 0.136 4 2011 1 76.557 0.188 3 2011 2 76.279 0.267 4 2011 3 76.301 0.168 4 2011 4 75.878 0.370 4 2011 5 75.677 0.250 4 2011 6 75.664 0.159 3 2011 7 75.478 0.145 5 2011 8 75.493 0.307 3 2011 9 75.594 0.341 5 2011 10 75.718 0.177 4 2011 11 75.486 0.171 4 2011 12 75.574 0.193 5 2012 1 75.674 0.210 3 2012 2 75.517 0.182 4 2012 3 75.829 0.219 2 2012 4 75.497 0.329 4 2012 5 75.119 0.187 4 2012 6 75.112 0.206 5 2012 7 74.758 0.235 3 2012 8 74.289 0.304 2 2012 9 74.233 0.155 4 2012 10 74.442 0.334 4 2012 11 74.780 0.133 4 2012 12 75.117 0.197 3 2013 1 74.730 0.477 1 2013 2 75.184 0.304 4 2013 3 74.773 0.218 5 2013 4 74.574 0.192 4 2013 5 74.090 0.215 4 2013 6 74.078 0.303 4 2013 7 73.882 0.351 3 2013 8 73.633 0.209 2 2013 9 74.380 2.378 1 2013 10 nan nan 0 2013 11 74.290 0.417 2 2013 12 74.231 0.336 5 2014 1 74.740 0.425 1 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 73.594 0.251 3 2014 8 73.292 0.199 5 2014 9 73.510 0.277 4 2014 10 73.460 0.384 5 2014 11 73.734 0.298 4 2014 12 73.758 0.225 4 2015 1 73.775 0.289 3 2015 2 73.673 0.233 5 2015 3 73.588 0.192 2 2015 4 73.618 0.164 3 2015 5 73.106 0.208 4 2015 6 72.893 0.191 3 2015 7 73.195 0.142 4 2015 8 72.846 0.257 5 2015 9 73.084 0.528 4 2015 10 72.786 0.460 4 2015 11 72.987 0.281 5 2015 12 73.203 0.278 4 2016 1 72.895 0.512 4 2016 2 72.936 0.423 3 2016 3 73.431 0.289 3 2016 4 73.240 0.382 5 2016 5 72.655 0.244 3 2016 6 72.799 0.477 3 2016 7 72.184 0.401 4 2016 8 72.292 0.716 4 2016 9 72.402 0.617 3 2016 10 72.496 0.716 3 2016 11 72.134 0.259 4 2016 12 72.638 0.410 3 2017 1 72.443 0.785 2 2017 2 72.789 0.721 2 2017 3 72.901 0.443 5 2017 4 72.621 0.364 3 2017 5 71.909 0.747 3 2017 6 71.980 0.238 4 2017 7 72.139 0.609 3 2017 8 71.456 0.595 4 2017 9 71.640 0.517 5 2017 10 72.174 0.628 4 2017 11 72.433 0.645 3 2017 12 71.786 0.443 4 2018 1 71.939 0.565 3 2018 2 72.539 0.403 3 2018 3 71.847 0.431 5 2018 4 72.019 0.710 3 2018 5 72.123 0.725 5 2018 6 72.220 1.102 3 2018 7 nan nan 0 2018 8 71.085 0.827 2 2018 9 70.927 0.423 4 2018 10 70.903 0.338 4 2018 11 71.990 0.291 3 2018 12 71.132 0.302 5 2019 1 71.046 0.222 3 2019 2 71.266 0.243 4 2019 3 71.234 0.232 2 2019 4 71.054 0.312 4 2019 5 71.461 0.585 5 2019 6 71.398 0.392 4 2019 7 71.172 0.246 2 2019 8 nan nan 0 2019 9 nan nan 0 2019 10 nan nan 0 2019 11 nan nan 0 2019 12 nan nan 0