# file: global_F11_MM.dat # # Atmospheric measurements of CCl3F (CFC-11, Chlorofluorocarbon-11, F11) # # Measurements are from the NOAA/ESRL/GMD/HATS flask program # (http://www.esrl.noaa.gov/gmd/hats/flask/flasks.html). # Instrument ID: Otto # # Location: Global -- Monthly Global-Hemispheric Means # 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 global and hemispheric mean estimates computed # using data from the monthly companion files named *_F11_MM.dat, where * # refers to a 3-character baseline site code. For any given month in the more # recent period, data from as many as 12 sites may be used to derive the global # mean, including as many as 4 sites in the southern hemisphere and up to 8 in # the northern hemisphere. From north to south, these baseline sites include # ALT, SUM, BRW, MHD, THD, NWR, MLO, KUM, SMO, CGO, PSA, and SPO: # # ALT - Alert, Canada 82.45 N 62.51 W 190 m # SUM - Summit, Greenland 72.60 N 38.42 W 3209 m # BRW - Barrow, Alaska 71.32 N 156.61 W 11 m # MHD - Mace Head, Ireland 53.33 N 9.90 W 5 m # THD - Trinidad Head, California 41.05 N 124.15 W 107 m # NWR - Niwot Ridge, Colorado 40.05 N 105.59 W 3523 m # MLO - Mauna Loa, Hawaii 19.54 N 155.58 W 3397 m # KUM - Cape Kumukahi, Hawaii 19.52 N 154.82 W 3 m # SMO - Tutuila, Samoa 14.25 S 170.56 W 42 m # CGO - Cape Grim, Tasmania 40.68 S 144.69 E 94 m # PSA - Palmer Station, Antarctica 64.92 S 64.00 W 10 m # SPO - South Pole, Antarctica 89.98 S 24.80 W 2810 m # # The global and hemispheric uncertainties reported here are bootstrapped from # 1000 'resamples' of the input monthly means drawn in accordance with the # uncertainties reported in the companion files. # # 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-11 # data from the NOAA/ESRL halocarbons flask program. # # Calibration scale: NOAA 2016 # See http://www.esrl.noaa.gov/gmd/ccl/scales.html for more information about # calibration scales. # # Units: ppt # # Mising value: "nan" # # Data Columns: # yr Year # mon Month # NHm Northern Hemispheric mean concentration of F11 in ppt # NHsd Northern Hemispheric standard deviation # SHm Southern Hemispheric mean concentration # SHsd Southern Hemispheric standard deviation # GLm Global mean concentration # GLsd Global standard deviation # F11ottoyr F11ottomon F11ottoNHm F11ottoNHsd F11ottoSHm F11ottoSHsd F11ottoGLm F11ottoGLsd 1995 1 267.402 0.249 263.869 0.395 265.635 0.234 1995 2 267.660 0.481 263.679 0.464 265.669 0.330 1995 3 267.502 0.217 263.992 0.362 265.747 0.211 1995 4 267.470 0.183 263.500 0.462 265.485 0.251 1995 5 267.470 0.218 263.820 0.185 265.645 0.141 1995 6 267.306 0.286 263.781 0.416 265.543 0.258 1995 7 266.974 0.308 263.095 0.506 265.035 0.292 1995 8 267.217 0.317 263.333 0.398 265.275 0.258 1995 9 266.790 0.314 263.693 0.376 265.241 0.242 1995 10 267.063 0.301 263.400 0.351 265.231 0.232 1995 11 267.337 0.453 263.891 0.252 265.614 0.263 1995 12 267.362 0.421 263.994 0.343 265.678 0.270 1996 1 267.017 0.289 263.585 0.526 265.301 0.293 1996 2 267.196 0.334 263.156 0.271 265.176 0.216 1996 3 267.536 0.277 263.859 0.346 265.698 0.228 1996 4 267.278 0.235 263.734 0.469 265.506 0.267 1996 5 267.120 0.243 264.076 0.389 265.598 0.228 1996 6 266.673 0.191 263.603 0.290 265.138 0.173 1996 7 266.482 0.254 263.550 0.297 265.016 0.196 1996 8 266.399 0.285 263.548 0.253 264.973 0.190 1996 9 266.411 0.276 263.205 0.931 264.808 0.486 1996 10 266.416 0.309 262.981 0.389 264.699 0.254 1996 11 266.279 0.258 263.589 0.650 264.934 0.346 1996 12 266.443 0.264 263.674 0.310 265.059 0.204 1997 1 265.945 0.378 263.383 0.351 264.664 0.259 1997 2 266.361 0.251 263.033 0.337 264.697 0.212 1997 3 265.643 0.262 263.328 0.440 264.485 0.263 1997 4 265.561 0.234 263.352 0.325 264.457 0.200 1997 5 265.217 0.310 262.701 0.241 263.959 0.197 1997 6 265.173 0.212 263.104 0.316 264.138 0.193 1997 7 264.913 0.219 262.958 0.242 263.936 0.163 1997 8 264.810 0.161 262.219 0.375 263.514 0.205 1997 9 264.672 0.250 262.456 0.283 263.564 0.188 1997 10 265.153 0.257 262.504 0.689 263.828 0.372 1997 11 265.022 0.294 262.278 0.328 263.650 0.218 1997 12 265.204 0.342 262.189 0.628 263.696 0.354 1998 1 264.791 0.199 261.916 0.854 263.354 0.441 1998 2 264.860 0.240 261.349 0.375 263.105 0.219 1998 3 264.294 0.231 260.911 0.261 262.602 0.174 1998 4 263.907 0.191 260.429 0.359 262.168 0.200 1998 5 263.467 0.319 260.532 0.326 261.999 0.231 1998 6 263.325 0.260 260.476 0.235 261.901 0.173 1998 7 262.916 0.171 260.657 0.272 261.787 0.164 1998 8 263.296 0.242 260.976 0.426 262.136 0.244 1998 9 262.990 0.256 261.166 0.245 262.078 0.180 1998 10 263.550 0.179 261.686 0.505 262.618 0.273 1998 11 263.559 0.208 261.866 0.383 262.712 0.217 1998 12 263.578 0.258 261.439 0.399 262.509 0.240 1999 1 263.506 0.273 261.305 0.341 262.405 0.222 1999 2 263.105 0.213 260.911 0.328 262.008 0.201 1999 3 262.903 0.227 260.916 0.277 261.910 0.180 1999 4 262.518 0.204 260.930 0.257 261.724 0.163 1999 5 262.168 0.202 260.109 0.370 261.138 0.213 1999 6 261.957 0.305 260.313 0.448 261.135 0.274 1999 7 261.378 0.193 259.845 0.194 260.612 0.133 1999 8 261.323 0.161 260.303 0.223 260.813 0.134 1999 9 261.596 0.151 259.673 0.369 260.634 0.203 1999 10 261.662 0.177 259.908 0.273 260.785 0.163 1999 11 261.674 0.183 259.991 0.242 260.833 0.154 1999 12 261.683 0.221 259.847 0.420 260.765 0.240 2000 1 261.640 0.189 259.584 0.508 260.612 0.268 2000 2 261.377 0.194 259.637 0.282 260.507 0.169 2000 3 261.203 0.233 259.239 0.434 260.221 0.249 2000 4 260.741 0.362 258.477 0.727 259.609 0.414 2000 5 260.441 0.246 258.174 0.403 259.308 0.233 2000 6 260.259 0.261 257.733 0.481 258.996 0.275 2000 7 260.053 0.338 258.010 0.474 259.031 0.293 2000 8 259.885 0.227 257.802 0.231 258.844 0.160 2000 9 259.907 0.205 257.755 0.332 258.831 0.195 2000 10 260.192 0.185 257.795 0.251 258.994 0.157 2000 11 260.512 0.177 257.774 0.287 259.143 0.171 2000 12 260.303 0.191 257.746 0.499 259.025 0.267 2001 1 260.504 0.158 257.673 0.410 259.089 0.217 2001 2 260.037 0.215 257.147 0.265 258.592 0.169 2001 3 259.742 0.289 256.559 0.187 258.151 0.174 2001 4 259.343 0.213 256.281 0.555 257.812 0.291 2001 5 259.151 0.215 256.172 0.213 257.661 0.154 2001 6 258.824 0.252 256.191 0.304 257.507 0.197 2001 7 258.417 0.180 255.854 0.308 257.136 0.177 2001 8 257.999 0.185 256.069 0.289 257.034 0.175 2001 9 258.107 0.190 256.099 0.188 257.103 0.133 2001 10 258.335 0.221 255.804 0.269 257.070 0.173 2001 11 258.303 0.219 255.954 0.237 257.129 0.159 2001 12 258.544 0.239 255.544 0.263 257.044 0.176 2002 1 258.433 0.202 255.748 0.184 257.091 0.137 2002 2 258.245 0.235 255.809 0.236 257.027 0.170 2002 3 258.149 0.141 255.377 0.259 256.763 0.146 2002 4 257.677 0.173 254.600 0.406 256.139 0.225 2002 5 257.246 0.218 254.203 0.335 255.724 0.200 2002 6 257.020 0.198 254.196 0.165 255.608 0.132 2002 7 256.444 0.141 254.302 0.273 255.373 0.155 2002 8 256.282 0.182 254.205 0.216 255.243 0.145 2002 9 256.247 0.243 253.955 0.322 255.101 0.196 2002 10 256.372 0.350 254.241 0.272 255.307 0.223 2002 11 256.394 0.202 253.813 0.391 255.104 0.224 2002 12 256.585 0.174 253.436 0.328 255.010 0.188 2003 1 255.684 0.140 252.795 0.342 254.239 0.183 2003 2 255.684 0.142 252.460 0.444 254.072 0.235 2003 3 255.214 0.179 252.450 0.215 253.832 0.141 2003 4 254.977 0.175 252.415 0.353 253.696 0.197 2003 5 254.721 0.133 252.069 0.198 253.395 0.119 2003 6 254.517 0.141 252.057 0.284 253.287 0.161 2003 7 254.169 0.140 251.952 0.241 253.061 0.143 2003 8 253.732 0.183 252.339 0.429 253.035 0.235 2003 9 253.782 0.164 251.702 0.194 252.742 0.127 2003 10 253.620 0.151 251.570 0.248 252.595 0.147 2003 11 253.698 0.134 251.418 0.199 252.558 0.121 2003 12 253.629 0.158 251.295 0.287 252.462 0.164 2004 1 253.363 0.149 250.904 0.359 252.133 0.194 2004 2 253.183 0.186 251.019 0.227 252.101 0.149 2004 3 252.793 0.145 250.878 0.195 251.836 0.124 2004 4 252.810 0.158 250.310 0.401 251.560 0.220 2004 5 252.696 0.184 249.985 0.192 251.340 0.133 2004 6 252.108 0.151 249.784 0.191 250.946 0.120 2004 7 251.857 0.147 249.717 0.204 250.787 0.125 2004 8 251.643 0.171 250.104 0.183 250.873 0.127 2004 9 251.552 0.165 249.599 0.172 250.575 0.117 2004 10 251.329 0.173 249.287 0.225 250.308 0.143 2004 11 251.263 0.189 249.031 0.248 250.147 0.160 2004 12 251.334 0.143 249.022 0.237 250.178 0.140 2005 1 251.183 0.160 249.037 0.235 250.110 0.139 2005 2 251.191 0.144 248.509 0.266 249.850 0.153 2005 3 251.027 0.140 248.275 0.452 249.651 0.233 2005 4 250.826 0.171 247.931 0.234 249.378 0.145 2005 5 250.508 0.180 247.698 0.276 249.103 0.164 2005 6 250.280 0.202 247.852 0.215 249.066 0.152 2005 7 249.837 0.166 247.511 0.260 248.674 0.152 2005 8 249.548 0.142 247.730 0.212 248.639 0.125 2005 9 249.567 0.158 247.524 0.267 248.546 0.154 2005 10 249.423 0.139 247.468 0.210 248.446 0.124 2005 11 249.628 0.160 247.432 0.297 248.530 0.165 2005 12 249.560 0.177 247.211 0.284 248.386 0.166 2006 1 249.309 0.165 247.059 0.259 248.184 0.152 2006 2 248.972 0.173 246.883 0.244 247.928 0.149 2006 3 248.772 0.190 246.597 0.305 247.684 0.179 2006 4 248.709 0.170 246.204 0.239 247.456 0.150 2006 5 248.497 0.172 246.391 0.304 247.444 0.172 2006 6 248.294 0.210 246.323 0.200 247.309 0.149 2006 7 247.793 0.141 245.957 0.237 246.875 0.139 2006 8 247.312 0.132 245.757 0.188 246.535 0.114 2006 9 247.117 0.155 245.695 0.191 246.406 0.123 2006 10 247.202 0.153 245.535 0.291 246.369 0.165 2006 11 247.185 0.170 245.202 0.208 246.194 0.132 2006 12 247.168 0.162 245.024 0.295 246.096 0.169 2007 1 247.119 0.160 244.744 0.283 245.931 0.162 2007 2 246.976 0.193 245.188 0.259 246.082 0.163 2007 3 246.714 0.181 244.738 0.300 245.726 0.175 2007 4 246.462 0.204 244.111 0.290 245.287 0.179 2007 5 246.118 0.165 243.739 0.223 244.929 0.139 2007 6 245.925 0.233 243.400 0.361 244.662 0.217 2007 7 245.434 0.235 243.204 0.299 244.319 0.188 2007 8 245.006 0.151 243.094 0.174 244.050 0.115 2007 9 245.105 0.149 243.232 0.284 244.168 0.159 2007 10 245.025 0.163 242.936 0.241 243.980 0.144 2007 11 245.062 0.187 243.284 0.228 244.173 0.148 2007 12 245.192 0.180 243.185 0.285 244.189 0.170 2008 1 245.235 0.139 243.274 0.302 244.255 0.166 2008 2 244.828 0.198 242.778 0.298 243.803 0.180 2008 3 244.519 0.171 242.474 0.273 243.496 0.159 2008 4 244.144 0.225 241.911 0.285 243.027 0.182 2008 5 243.817 0.200 241.942 0.267 242.880 0.169 2008 6 243.723 0.218 241.522 0.215 242.623 0.154 2008 7 243.188 0.203 241.432 0.165 242.310 0.132 2008 8 243.201 0.148 241.293 0.190 242.247 0.120 2008 9 242.946 0.128 241.004 0.169 241.975 0.109 2008 10 243.042 0.137 240.909 0.190 241.976 0.117 2008 11 243.225 0.153 240.989 0.297 242.107 0.165 2008 12 243.228 0.164 240.954 0.296 242.091 0.172 2009 1 242.865 0.172 240.866 0.296 241.865 0.171 2009 2 242.647 0.137 240.913 0.253 241.780 0.144 2009 3 242.525 0.126 240.560 0.210 241.542 0.124 2009 4 242.124 0.125 239.972 0.330 241.048 0.181 2009 5 241.920 0.134 239.772 0.189 240.846 0.116 2009 6 241.624 0.159 239.532 0.282 240.578 0.164 2009 7 241.314 0.120 239.354 0.220 240.334 0.124 2009 8 241.234 0.147 239.414 0.187 240.324 0.117 2009 9 241.226 0.130 239.576 0.219 240.401 0.126 2009 10 241.472 0.142 239.392 0.163 240.432 0.107 2009 11 241.562 0.148 239.557 0.287 240.559 0.161 2009 12 241.374 0.144 239.221 0.256 240.298 0.145 2010 1 241.222 0.124 238.976 0.179 240.099 0.109 2010 2 241.185 0.136 238.593 0.314 239.889 0.169 2010 3 240.671 0.162 238.402 0.220 239.537 0.138 2010 4 240.463 0.149 238.414 0.255 239.439 0.147 2010 5 240.185 0.125 238.055 0.256 239.120 0.142 2010 6 239.726 0.153 237.868 0.205 238.797 0.130 2010 7 239.368 0.156 237.923 0.252 238.646 0.148 2010 8 239.296 0.132 237.942 0.195 238.619 0.118 2010 9 239.245 0.127 237.739 0.158 238.492 0.102 2010 10 239.529 0.164 237.471 0.267 238.500 0.153 2010 11 239.443 0.151 237.354 0.285 238.399 0.161 2010 12 239.374 0.194 237.235 0.281 238.304 0.175 2011 1 239.241 0.137 237.072 0.228 238.156 0.131 2011 2 238.968 0.177 236.876 0.269 237.922 0.161 2011 3 238.696 0.167 236.660 0.205 237.678 0.128 2011 4 238.367 0.160 236.284 0.254 237.326 0.149 2011 5 238.239 0.152 236.257 0.186 237.248 0.119 2011 6 237.921 0.155 235.867 0.242 236.894 0.144 2011 7 237.749 0.147 235.829 0.254 236.789 0.148 2011 8 237.486 0.142 235.739 0.199 236.613 0.122 2011 9 237.395 0.158 235.576 0.182 236.485 0.121 2011 10 237.355 0.158 235.406 0.217 236.381 0.134 2011 11 237.609 0.152 235.568 0.254 236.589 0.150 2011 12 237.592 0.176 235.390 0.197 236.491 0.134 2012 1 237.243 0.180 235.167 0.298 236.205 0.174 2012 2 237.166 0.205 235.095 0.330 236.131 0.196 2012 3 236.734 0.188 234.761 0.230 235.747 0.147 2012 4 236.418 0.167 234.387 0.187 235.402 0.124 2012 5 236.078 0.146 234.017 0.291 235.048 0.162 2012 6 235.682 0.156 234.091 0.204 234.887 0.128 2012 7 235.338 0.193 233.909 0.234 234.624 0.150 2012 8 235.074 0.134 233.632 0.226 234.353 0.131 2012 9 235.210 0.209 233.590 0.206 234.400 0.144 2012 10 235.553 0.172 233.491 0.254 234.522 0.155 2012 11 235.609 0.136 233.425 0.244 234.517 0.138 2012 12 235.785 0.160 233.457 0.285 234.621 0.165 2013 1 235.663 0.164 233.188 0.387 234.425 0.209 2013 2 235.405 0.208 233.117 0.270 234.261 0.166 2013 3 234.976 0.171 232.571 0.247 233.773 0.152 2013 4 234.607 0.207 232.379 0.231 233.493 0.152 2013 5 234.382 0.216 232.161 0.207 233.272 0.149 2013 6 234.373 0.231 232.108 0.289 233.241 0.190 2013 7 234.135 0.298 232.231 0.398 233.183 0.250 2013 8 234.404 0.334 232.295 0.414 233.349 0.264 2013 9 234.337 0.281 231.793 1.112 233.065 0.585 2013 10 234.387 0.717 231.895 0.341 233.141 0.397 2013 11 234.625 0.338 231.946 0.460 233.286 0.277 2013 12 234.429 0.228 232.088 0.224 233.259 0.158 2014 1 233.836 0.217 231.095 0.274 232.466 0.172 2014 2 233.373 0.160 231.110 0.455 232.241 0.243 2014 3 233.756 0.315 231.076 0.544 232.416 0.314 2014 4 233.702 0.348 230.749 0.263 232.226 0.219 2014 5 234.104 0.229 230.588 0.212 232.346 0.156 2014 6 233.632 0.228 230.331 0.232 231.982 0.160 2014 7 233.513 0.262 230.630 0.234 232.071 0.181 2014 8 233.471 0.223 230.591 0.241 232.031 0.158 2014 9 233.508 0.234 230.428 0.184 231.968 0.149 2014 10 233.742 0.180 230.484 0.219 232.113 0.146 2014 11 233.723 0.185 230.524 0.253 232.124 0.157 2014 12 233.597 0.200 230.162 0.358 231.880 0.209 2015 1 233.206 0.208 230.358 0.296 231.782 0.181 2015 2 232.946 0.183 230.083 0.280 231.514 0.169 2015 3 232.504 0.203 230.165 0.250 231.335 0.157 2015 4 232.529 0.291 230.017 0.195 231.273 0.177 2015 5 232.563 0.211 229.657 0.225 231.110 0.152 2015 6 232.458 0.172 229.575 0.268 231.016 0.158 2015 7 232.291 0.172 229.378 0.258 230.834 0.156 2015 8 231.784 0.165 229.025 0.311 230.404 0.178 2015 9 232.035 0.251 229.296 0.242 230.665 0.176 2015 10 232.296 0.175 228.858 0.324 230.577 0.186 2015 11 232.314 0.154 229.079 0.330 230.697 0.181 2015 12 232.165 0.173 228.697 0.279 230.431 0.165 2016 1 231.798 0.335 228.857 0.385 230.328 0.259 2016 2 231.701 0.318 229.507 0.647 230.604 0.365 2016 3 231.840 0.359 229.027 0.436 230.434 0.277 2016 4 231.523 0.523 228.543 1.037 230.033 0.582 2016 5 231.797 0.635 228.553 0.660 230.175 0.466 2016 6 231.873 0.493 228.735 0.544 230.304 0.372 2016 7 231.297 0.443 228.096 0.319 229.697 0.271 2016 8 230.840 0.276 227.549 0.424 229.194 0.260 2016 9 230.943 0.208 227.436 0.273 229.190 0.173 2016 10 230.691 0.225 227.602 0.490 229.147 0.271 2016 11 231.148 0.209 227.331 0.284 229.239 0.173 2016 12 231.034 0.216 227.462 0.393 229.248 0.222 2017 1 230.918 0.276 227.521 0.414 229.219 0.244 2017 2 230.735 0.239 227.281 0.466 229.008 0.258 2017 3 230.205 0.247 227.162 0.559 228.684 0.301 2017 4 230.560 0.314 226.832 0.344 228.696 0.233 2017 5 230.221 0.269 226.758 0.595 228.490 0.324 2017 6 230.051 0.276 226.315 0.538 228.183 0.293 2017 7 229.878 0.316 226.858 0.381 228.368 0.255 2017 8 229.785 0.272 226.803 0.315 228.294 0.210 2017 9 230.081 0.232 226.801 0.619 228.441 0.326 2017 10 230.187 0.230 226.960 0.344 228.574 0.205 2017 11 230.243 0.278 227.123 0.354 228.683 0.222 2017 12 229.746 0.282 227.218 0.212 228.482 0.177 2018 1 230.076 0.311 226.948 0.472 228.512 0.280 2018 2 229.428 0.265 226.926 0.370 228.177 0.229 2018 3 229.099 0.267 226.631 0.538 227.865 0.302 2018 4 229.234 0.374 227.113 0.309 228.173 0.241 2018 5 229.300 0.294 226.752 0.385 228.026 0.245 2018 6 229.041 0.239 226.196 0.427 227.619 0.241 2018 7 228.810 0.304 226.232 0.471 227.521 0.271 2018 8 228.815 0.212 226.440 0.318 227.628 0.190 2018 9 228.203 0.216 226.133 0.603 227.168 0.321 2018 10 228.574 0.238 226.616 0.425 227.595 0.243 2018 11 229.162 0.299 226.310 0.501 227.736 0.294 2018 12 228.599 0.340 225.623 0.351 227.111 0.244 2019 1 228.035 0.301 225.351 0.281 226.693 0.211 2019 2 227.653 0.234 225.438 0.309 226.545 0.198 2019 3 nan nan nan nan nan nan 2019 4 nan nan nan nan nan nan 2019 5 nan nan nan nan nan nan 2019 6 nan nan nan nan nan nan 2019 7 nan nan nan nan nan nan 2019 8 nan nan nan nan nan nan 2019 9 nan nan nan nan nan nan 2019 10 nan nan nan nan nan nan 2019 11 nan nan nan nan nan nan 2019 12 nan nan nan nan nan nan