# file: mlo_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: 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_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 # F113ottoMLOyr F113ottoMLOmon F113ottoMLOm F113ottoMLOsd F113ottoMLOn 1995 1 nan nan 0 1995 2 nan nan 0 1995 3 nan nan 0 1995 4 nan nan 0 1995 5 nan nan 0 1995 6 nan nan 0 1995 7 nan nan 0 1995 8 nan nan 0 1995 9 86.028 0.365 2 1995 10 86.475 0.262 2 1995 11 86.668 0.295 2 1995 12 86.528 0.365 2 1996 1 86.251 0.310 3 1996 2 86.703 0.289 2 1996 3 86.487 0.213 4 1996 4 86.250 0.218 4 1996 5 85.995 0.178 4 1996 6 86.308 0.316 5 1996 7 86.195 0.217 2 1996 8 86.537 0.262 3 1996 9 86.180 0.167 1 1996 10 86.254 0.174 3 1996 11 86.205 0.244 4 1996 12 86.129 0.234 4 1997 1 86.150 0.162 1 1997 2 86.069 0.592 3 1997 3 85.937 0.252 5 1997 4 85.620 0.240 2 1997 5 85.820 0.197 3 1997 6 85.780 0.247 4 1997 7 85.823 0.140 4 1997 8 85.761 0.223 3 1997 9 85.534 0.219 2 1997 10 86.073 0.242 3 1997 11 85.717 0.318 2 1997 12 85.984 0.191 4 1998 1 85.769 0.203 4 1998 2 85.746 0.198 4 1998 3 85.563 0.196 4 1998 4 85.521 0.189 3 1998 5 85.558 0.256 4 1998 6 85.273 0.139 3 1998 7 85.335 0.295 4 1998 8 85.256 0.232 3 1998 9 85.121 0.334 3 1998 10 85.079 0.337 3 1998 11 85.172 0.276 4 1998 12 85.028 0.203 4 1999 1 84.946 0.312 3 1999 2 85.219 0.267 5 1999 3 85.466 0.266 2 1999 4 85.002 0.523 2 1999 5 85.052 0.288 4 1999 6 85.101 0.378 5 1999 7 84.882 0.167 4 1999 8 84.820 0.233 5 1999 9 84.801 0.181 3 1999 10 84.850 0.188 3 1999 11 84.491 0.200 4 1999 12 84.710 0.256 4 2000 1 84.420 0.258 3 2000 2 84.505 0.193 4 2000 3 84.550 0.293 2 2000 4 84.517 0.221 3 2000 5 84.478 0.156 4 2000 6 84.443 0.255 4 2000 7 84.362 0.263 4 2000 8 84.098 0.236 4 2000 9 84.051 0.219 3 2000 10 83.914 0.202 4 2000 11 84.134 0.217 4 2000 12 84.119 0.211 3 2001 1 84.077 0.170 3 2001 2 83.834 0.145 4 2001 3 83.478 0.163 3 2001 4 83.682 0.290 2 2001 5 83.636 0.190 3 2001 6 83.809 0.187 3 2001 7 83.606 0.226 2 2001 8 83.509 0.296 3 2001 9 83.480 0.149 4 2001 10 83.341 0.189 3 2001 11 83.269 0.224 4 2001 12 83.427 0.111 3 2002 1 83.242 0.141 2 2002 2 83.077 0.151 3 2002 3 83.207 0.139 5 2002 4 82.986 0.317 4 2002 5 83.036 0.187 4 2002 6 82.812 0.168 5 2002 7 82.911 0.184 4 2002 8 82.853 0.172 4 2002 9 82.878 0.153 5 2002 10 82.684 0.113 4 2002 11 82.732 0.175 4 2002 12 82.617 0.129 5 2003 1 82.697 0.195 4 2003 2 82.499 0.188 4 2003 3 82.374 0.166 5 2003 4 82.246 0.195 4 2003 5 82.154 0.159 5 2003 6 82.112 0.189 6 2003 7 82.037 0.200 4 2003 8 81.930 0.311 2 2003 9 81.985 0.224 4 2003 10 81.882 0.177 4 2003 11 81.644 0.132 4 2003 12 81.825 0.208 4 2004 1 81.987 0.194 3 2004 2 81.711 0.273 5 2004 3 81.652 0.182 4 2004 4 81.357 0.265 4 2004 5 81.384 0.224 4 2004 6 81.336 0.228 5 2004 7 81.095 0.202 3 2004 8 81.324 0.147 4 2004 9 81.177 0.184 5 2004 10 80.908 0.249 4 2004 11 80.816 0.245 4 2004 12 81.054 0.290 5 2005 1 81.088 0.286 4 2005 2 80.680 0.367 4 2005 3 80.661 0.163 4 2005 4 80.796 0.403 4 2005 5 80.845 0.182 5 2005 6 81.090 0.184 4 2005 7 80.827 0.220 4 2005 8 80.520 0.186 5 2005 9 80.314 0.352 4 2005 10 79.981 0.220 3 2005 11 80.302 0.234 5 2005 12 80.443 0.146 3 2006 1 80.194 0.380 4 2006 2 80.421 0.137 5 2006 3 80.109 0.089 4 2006 4 79.950 0.208 4 2006 5 80.075 0.204 5 2006 6 80.077 0.217 4 2006 7 80.207 0.356 3 2006 8 79.633 0.289 5 2006 9 79.630 0.177 4 2006 10 79.609 0.201 4 2006 11 79.634 0.166 5 2006 12 79.660 0.278 4 2007 1 79.548 0.240 4 2007 2 79.530 0.204 5 2007 3 79.459 0.219 4 2007 4 79.229 0.307 4 2007 5 79.216 0.214 4 2007 6 79.437 0.230 4 2007 7 79.277 0.280 4 2007 8 78.897 0.245 5 2007 9 78.873 0.190 4 2007 10 78.742 0.206 4 2007 11 78.727 0.153 5 2007 12 78.813 0.319 4 2008 1 79.003 0.475 2 2008 2 78.759 0.211 4 2008 3 78.757 0.118 4 2008 4 78.607 0.175 4 2008 5 78.750 0.578 4 2008 6 78.662 0.320 4 2008 7 78.430 0.262 4 2008 8 78.522 0.193 4 2008 9 78.198 0.286 4 2008 10 78.264 0.315 5 2008 11 78.244 0.174 4 2008 12 77.996 0.269 4 2009 1 78.104 0.131 5 2009 2 77.813 0.182 3 2009 3 77.947 0.165 3 2009 4 77.954 0.226 5 2009 5 77.874 0.171 4 2009 6 77.798 0.256 4 2009 7 77.595 0.214 5 2009 8 77.396 0.165 2 2009 9 77.529 0.221 5 2009 10 77.495 0.258 4 2009 11 77.332 0.187 4 2009 12 77.438 0.187 4 2010 1 77.463 0.156 3 2010 2 nan nan 0 2010 3 77.086 0.304 5 2010 4 77.067 0.241 3 2010 5 77.205 0.224 5 2010 6 77.004 0.197 4 2010 7 76.936 0.313 4 2010 8 76.936 0.203 5 2010 9 76.710 0.154 4 2010 10 76.824 0.303 2 2010 11 76.837 0.188 4 2010 12 76.722 0.163 4 2011 1 76.677 0.166 4 2011 2 76.714 0.155 4 2011 3 76.655 0.142 4 2011 4 76.571 0.173 3 2011 5 76.330 0.117 5 2011 6 76.481 0.165 3 2011 7 76.509 0.225 4 2011 8 76.318 0.174 5 2011 9 76.212 0.266 4 2011 10 75.854 0.223 4 2011 11 75.841 0.208 5 2011 12 75.947 0.225 4 2012 1 75.863 0.226 4 2012 2 75.880 0.209 4 2012 3 75.915 0.195 4 2012 4 75.645 0.248 5 2012 5 75.521 0.163 2 2012 6 75.643 0.184 4 2012 7 75.382 0.355 5 2012 8 75.540 0.231 4 2012 9 75.279 0.256 3 2012 10 75.479 0.342 5 2012 11 75.328 0.316 4 2012 12 75.460 0.197 4 2013 1 75.327 0.225 4 2013 2 75.497 0.309 2 2013 3 75.170 0.241 1 2013 4 nan nan 0 2013 5 74.721 0.269 3 2013 6 75.050 0.210 3 2013 7 75.011 0.476 4 2013 8 74.880 0.245 3 2013 9 74.430 1.132 1 2013 10 74.710 1.538 1 2013 11 74.722 0.287 4 2013 12 74.751 0.332 5 2014 1 74.980 0.177 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 74.167 0.251 4 2014 8 74.469 0.212 4 2014 9 74.210 0.189 4 2014 10 74.272 0.143 4 2014 11 74.276 0.281 3 2014 12 74.167 0.269 5 2015 1 74.458 0.236 4 2015 2 74.252 0.278 4 2015 3 73.936 0.413 4 2015 4 73.775 0.236 4 2015 5 74.058 0.265 3 2015 6 73.892 0.321 5 2015 7 73.959 0.524 3 2015 8 73.671 0.212 4 2015 9 73.574 0.225 5 2015 10 73.519 0.203 4 2015 11 73.547 0.214 3 2015 12 73.618 0.247 5 2016 1 73.624 0.269 4 2016 2 73.666 0.498 3 2016 3 73.930 0.467 3 2016 4 72.813 0.388 4 2016 5 73.116 0.269 4 2016 6 72.719 0.412 2 2016 7 73.410 0.427 1 2016 8 73.221 0.484 4 2016 9 73.155 0.212 2 2016 10 72.595 0.192 3 2016 11 73.046 0.285 3 2016 12 73.000 0.376 1 2017 1 73.080 0.389 2 2017 2 72.998 0.333 3 2017 3 72.764 0.229 4 2017 4 73.220 0.477 4 2017 5 72.689 0.230 3 2017 6 72.500 0.377 2 2017 7 72.966 0.235 4 2017 8 72.872 0.368 3 2017 9 72.755 0.584 3 2017 10 72.296 0.546 4 2017 11 72.183 0.332 2 2017 12 72.519 0.514 3 2018 1 72.084 0.450 4 2018 2 72.266 0.441 3 2018 3 72.274 0.328 3 2018 4 72.371 0.696 3 2018 5 71.810 0.292 1 2018 6 72.245 0.184 2 2018 7 nan nan 0 2018 8 72.160 0.325 2 2018 9 72.062 0.555 5 2018 10 71.957 0.414 7 2018 11 72.138 0.774 8 2018 12 72.015 0.624 4 2019 1 71.530 0.358 5 2019 2 71.405 0.283 4 2019 3 72.332 0.762 3 2019 4 71.595 0.484 5 2019 5 71.464 0.771 4 2019 6 71.899 0.636 4 2019 7 71.287 0.284 4 2019 8 72.082 0.399 4 2019 9 nan nan 0 2019 10 nan nan 0 2019 11 nan nan 0 2019 12 nan nan 0