# file: mhd_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: MHD -- Mace Head, Ireland -- 53.33 N, 9.90 W, 25 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 "mhd_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 # F113ottoMHDyr F113ottoMHDmon F113ottoMHDm F113ottoMHDsd F113ottoMHDn 1998 1 nan nan 0 1998 2 nan nan 0 1998 3 nan nan 0 1998 4 nan nan 0 1998 5 nan nan 0 1998 6 nan nan 0 1998 7 nan nan 0 1998 8 nan nan 0 1998 9 nan nan 0 1998 10 85.870 0.280 1 1998 11 84.640 0.322 1 1998 12 nan nan 0 1999 1 nan nan 0 1999 2 85.250 0.429 1 1999 3 nan nan 0 1999 4 85.260 0.212 1 1999 5 nan nan 0 1999 6 84.550 0.423 1 1999 7 84.695 0.188 2 1999 8 84.382 0.240 2 1999 9 nan nan 0 1999 10 nan nan 0 1999 11 nan nan 0 1999 12 nan nan 0 2000 1 nan nan 0 2000 2 nan nan 0 2000 3 nan nan 0 2000 4 nan nan 0 2000 5 nan nan 0 2000 6 nan nan 0 2000 7 nan nan 0 2000 8 nan nan 0 2000 9 nan nan 0 2000 10 nan nan 0 2000 11 nan nan 0 2000 12 nan nan 0 2001 1 nan nan 0 2001 2 nan nan 0 2001 3 nan nan 0 2001 4 nan nan 0 2001 5 83.670 0.203 1 2001 6 nan nan 0 2001 7 82.590 0.197 1 2001 8 82.748 0.212 2 2001 9 82.840 0.179 1 2001 10 82.840 0.230 1 2001 11 nan nan 0 2001 12 nan nan 0 2002 1 83.210 0.243 1 2002 2 83.169 0.163 3 2002 3 83.080 0.293 1 2002 4 82.957 0.298 2 2002 5 nan nan 0 2002 6 nan nan 0 2002 7 nan nan 0 2002 8 nan nan 0 2002 9 82.020 0.199 1 2002 10 82.096 0.325 2 2002 11 82.378 0.179 2 2002 12 82.440 0.180 1 2003 1 82.244 0.306 2 2003 2 82.370 0.233 2 2003 3 82.270 0.114 3 2003 4 82.180 0.175 1 2003 5 82.155 0.573 2 2003 6 81.422 0.311 2 2003 7 81.158 0.198 2 2003 8 80.970 0.220 1 2003 9 81.221 0.255 3 2003 10 81.380 0.371 1 2003 11 81.441 0.154 3 2003 12 81.577 0.237 2 2004 1 81.618 0.215 2 2004 2 81.581 0.375 2 2004 3 81.259 0.201 2 2004 4 81.241 0.219 2 2004 5 81.335 0.195 2 2004 6 80.521 0.184 2 2004 7 80.841 0.240 2 2004 8 80.593 0.182 2 2004 9 80.752 0.202 2 2004 10 81.070 0.255 1 2004 11 80.814 0.318 2 2004 12 80.848 0.165 2 2005 1 81.274 0.262 2 2005 2 80.647 0.148 2 2005 3 80.560 0.163 1 2005 4 81.010 0.318 2 2005 5 80.350 0.544 3 2005 6 80.780 0.203 1 2005 7 80.325 0.537 2 2005 8 79.824 0.369 2 2005 9 79.719 0.771 2 2005 10 79.760 0.330 3 2005 11 80.191 0.201 2 2005 12 79.933 0.396 2 2006 1 80.170 0.305 1 2006 2 79.950 0.337 2 2006 3 79.727 0.304 2 2006 4 80.058 0.314 3 2006 5 80.257 0.234 2 2006 6 79.504 0.269 2 2006 7 79.310 0.240 1 2006 8 79.029 0.410 2 2006 9 78.873 0.211 2 2006 10 79.041 0.279 2 2006 11 79.337 0.237 2 2006 12 79.255 0.212 2 2007 1 79.490 0.137 1 2007 2 79.483 0.344 2 2007 3 79.426 0.268 2 2007 4 79.120 0.252 1 2007 5 78.847 0.185 2 2007 6 78.962 0.636 2 2007 7 78.497 0.277 2 2007 8 78.120 0.269 1 2007 9 78.257 0.167 2 2007 10 78.249 0.192 2 2007 11 78.202 0.285 2 2007 12 78.020 0.692 1 2008 1 78.200 0.946 1 2008 2 nan nan 0 2008 3 78.502 0.252 3 2008 4 78.350 1.116 1 2008 5 nan nan 0 2008 6 78.170 0.332 2 2008 7 78.260 0.348 1 2008 8 77.840 0.340 1 2008 9 77.427 0.196 2 2008 10 77.963 0.189 2 2008 11 77.724 0.213 2 2008 12 77.296 0.167 2 2009 1 77.820 0.261 2 2009 2 77.697 0.168 2 2009 3 77.830 0.163 2 2009 4 77.609 0.169 3 2009 5 77.251 0.417 2 2009 6 nan nan 0 2009 7 77.381 0.209 2 2009 8 76.503 0.262 2 2009 9 76.829 0.262 2 2009 10 nan nan 0 2009 11 76.857 0.131 2 2009 12 77.030 0.191 1 2010 1 77.148 0.197 2 2010 2 76.937 0.154 2 2010 3 76.964 0.146 2 2010 4 76.865 0.164 2 2010 5 76.790 0.273 2 2010 6 75.949 0.171 2 2010 7 76.360 0.157 1 2010 8 76.090 0.205 1 2010 9 76.142 0.176 2 2010 10 76.190 0.204 1 2010 11 76.004 0.186 2 2010 12 76.389 0.196 2 2011 1 76.339 0.192 2 2011 2 76.621 0.587 2 2011 3 76.550 0.289 1 2011 4 75.847 0.137 2 2011 5 75.981 0.195 2 2011 6 75.667 0.240 2 2011 7 75.153 0.170 2 2011 8 75.488 0.178 2 2011 9 75.862 0.168 2 2011 10 75.310 0.219 2 2011 11 75.382 0.174 2 2011 12 75.541 0.257 2 2012 1 75.410 0.203 1 2012 2 75.427 0.215 3 2012 3 nan nan 0 2012 4 75.390 0.205 2 2012 5 75.161 0.318 2 2012 6 74.550 0.217 1 2012 7 74.714 0.417 2 2012 8 74.740 0.243 1 2012 9 74.740 0.248 1 2012 10 74.740 0.457 2 2012 11 74.959 0.368 2 2012 12 74.951 0.245 2 2013 1 75.050 0.272 2 2013 2 75.180 0.516 1 2013 3 74.660 0.185 1 2013 4 74.297 0.636 2 2013 5 74.344 0.141 2 2013 6 nan nan 0 2013 7 nan nan 0 2013 8 nan nan 0 2013 9 nan nan 0 2013 10 73.840 0.624 1 2013 11 73.552 0.403 2 2013 12 73.891 0.294 2 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 73.410 0.252 1 2014 8 73.260 0.216 1 2014 9 73.260 0.236 1 2014 10 73.370 0.156 1 2014 11 73.545 0.165 2 2014 12 73.524 0.185 2 2015 1 nan nan 0 2015 2 nan nan 0 2015 3 nan nan 0 2015 4 nan nan 0 2015 5 73.082 0.353 2 2015 6 73.043 0.580 2 2015 7 72.920 0.317 1 2015 8 72.783 0.375 2 2015 9 73.120 0.218 1 2015 10 72.730 0.410 2 2015 11 72.855 0.271 2 2015 12 72.850 0.283 1 2016 1 nan nan 0 2016 2 nan nan 0 2016 3 73.290 0.367 1 2016 4 73.230 0.451 2 2016 5 nan nan 0 2016 6 72.160 0.328 1 2016 7 72.638 0.658 2 2016 8 nan nan 0 2016 9 71.755 0.169 2 2016 10 72.110 0.364 1 2016 11 72.086 0.337 2 2016 12 72.248 0.339 2 2017 1 72.817 0.256 2 2017 2 nan nan 0 2017 3 72.335 0.290 2 2017 4 72.460 0.195 1 2017 5 72.043 0.259 2 2017 6 72.230 0.306 1 2017 7 71.684 0.382 2 2017 8 71.684 0.559 2 2017 9 nan nan 0 2017 10 71.862 0.240 2 2017 11 71.674 0.219 2 2017 12 72.201 0.396 2 2018 1 71.419 0.212 2 2018 2 71.354 0.353 2 2018 3 71.774 0.262 2 2018 4 71.704 0.309 3 2018 5 72.030 0.227 1 2018 6 nan nan 0 2018 7 nan nan 0 2018 8 72.150 0.185 1 2018 9 71.790 0.262 1 2018 10 70.877 0.320 2 2018 11 71.088 0.735 2 2018 12 71.370 0.615 2 2019 1 70.680 0.412 1 2019 2 71.194 0.233 2 2019 3 71.411 0.171 3 2019 4 71.420 0.188 1 2019 5 71.310 0.367 1 2019 6 nan nan 0 2019 7 nan nan 0 2019 8 70.720 0.235 1 2019 9 nan nan 0 2019 10 nan nan 0 2019 11 nan nan 0 2019 12 nan nan 0