# file: alt_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: ALT -- Alert, Canada -- 82.45 N, 62.51 W, 200 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 "alt_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 # F113ottoALTyr F113ottoALTmon F113ottoALTm F113ottoALTsd F113ottoALTn 1995 1 nan nan 0 1995 2 87.080 0.959 1 1995 3 87.523 0.874 2 1995 4 87.294 0.838 2 1995 5 87.220 0.665 1 1995 6 nan nan 0 1995 7 87.126 1.602 2 1995 8 87.092 0.360 4 1995 9 87.286 0.634 2 1995 10 nan nan 0 1995 11 87.193 0.343 4 1995 12 87.120 0.635 1 1996 1 86.260 1.120 1 1996 2 87.109 0.244 4 1996 3 nan nan 0 1996 4 87.021 0.300 2 1996 5 87.097 0.400 3 1996 6 86.757 0.204 3 1996 7 86.540 0.232 1 1996 8 86.394 0.221 4 1996 9 86.770 0.903 1 1996 10 86.823 0.430 3 1996 11 86.380 0.207 2 1996 12 nan nan 0 1997 1 86.829 0.295 2 1997 2 86.765 0.416 4 1997 3 86.464 0.205 2 1997 4 nan nan 0 1997 5 86.100 0.249 1 1997 6 86.414 0.282 4 1997 7 86.289 0.304 2 1997 8 nan nan 0 1997 9 nan nan 0 1997 10 85.754 0.274 3 1997 11 nan nan 0 1997 12 85.824 0.322 2 1998 1 85.772 0.241 2 1998 2 86.140 0.358 1 1998 3 85.930 0.307 1 1998 4 86.135 0.257 2 1998 5 85.812 0.332 2 1998 6 85.942 0.182 2 1998 7 85.855 0.186 2 1998 8 85.199 0.314 3 1998 9 85.287 0.320 5 1998 10 85.318 0.276 3 1998 11 85.037 0.249 4 1998 12 85.069 0.322 3 1999 1 85.422 0.299 3 1999 2 85.161 0.413 3 1999 3 85.598 0.286 3 1999 4 85.180 0.313 1 1999 5 85.629 0.258 3 1999 6 85.214 0.407 3 1999 7 84.652 0.264 4 1999 8 84.757 0.162 2 1999 9 84.990 0.210 1 1999 10 84.531 0.185 4 1999 11 84.502 0.214 3 1999 12 nan nan 0 2000 1 84.647 0.463 3 2000 2 84.605 0.329 3 2000 3 84.501 0.201 3 2000 4 84.781 0.332 3 2000 5 84.393 0.209 4 2000 6 84.560 0.550 1 2000 7 84.065 0.375 3 2000 8 84.248 0.233 3 2000 9 84.080 0.215 1 2000 10 nan nan 0 2000 11 84.035 0.221 3 2000 12 84.046 0.190 3 2001 1 nan nan 0 2001 2 83.766 0.220 3 2001 3 84.011 0.204 3 2001 4 nan nan 0 2001 5 83.973 0.206 5 2001 6 83.748 0.262 2 2001 7 83.504 0.219 4 2001 8 83.307 0.184 5 2001 9 83.204 0.184 3 2001 10 82.985 0.169 4 2001 11 82.992 0.174 4 2001 12 83.040 0.174 4 2002 1 83.118 0.182 4 2002 2 83.135 0.223 2 2002 3 83.156 0.180 4 2002 4 83.087 0.219 4 2002 5 83.124 0.170 4 2002 6 82.868 0.293 3 2002 7 82.516 0.144 5 2002 8 82.804 0.303 3 2002 9 82.272 0.148 4 2002 10 82.537 0.265 5 2002 11 82.709 0.161 4 2002 12 82.579 0.214 4 2003 1 82.468 0.186 3 2003 2 82.482 0.186 4 2003 3 82.343 0.342 2 2003 4 82.380 0.156 5 2003 5 82.387 0.190 4 2003 6 82.246 0.243 4 2003 7 82.027 0.285 4 2003 8 81.959 0.128 4 2003 9 81.683 0.155 4 2003 10 81.658 0.294 5 2003 11 81.575 0.358 4 2003 12 81.834 0.164 4 2004 1 81.701 0.227 5 2004 2 81.543 0.180 4 2004 3 81.556 0.210 4 2004 4 81.745 0.182 4 2004 5 81.528 0.168 4 2004 6 81.606 0.160 4 2004 7 81.167 0.153 3 2004 8 81.272 0.411 4 2004 9 81.069 0.460 4 2004 10 80.395 0.217 4 2004 11 81.018 0.442 4 2004 12 80.957 0.110 4 2005 1 80.778 0.151 5 2005 2 80.897 0.222 5 2005 3 81.183 0.219 4 2005 4 81.060 0.167 4 2005 5 81.264 0.178 4 2005 6 81.269 0.248 5 2005 7 80.980 0.237 4 2005 8 80.669 0.241 5 2005 9 79.973 0.213 4 2005 10 80.063 0.201 4 2005 11 80.123 0.199 4 2005 12 80.199 0.177 4 2006 1 80.320 0.211 3 2006 2 80.375 0.216 5 2006 3 80.350 0.202 4 2006 4 80.393 0.241 4 2006 5 80.269 0.310 5 2006 6 80.133 0.185 4 2006 7 79.856 0.350 4 2006 8 79.884 0.194 4 2006 9 79.541 0.238 3 2006 10 79.545 0.174 4 2006 11 79.537 0.167 5 2006 12 79.740 0.217 4 2007 1 79.527 0.184 4 2007 2 79.636 0.190 4 2007 3 79.474 0.249 4 2007 4 79.373 0.205 4 2007 5 79.400 0.259 5 2007 6 79.424 0.225 4 2007 7 79.260 0.205 4 2007 8 79.078 0.258 5 2007 9 78.549 0.204 4 2007 10 78.504 0.252 4 2007 11 78.728 0.175 3 2007 12 78.793 0.199 3 2008 1 78.844 0.234 5 2008 2 78.756 0.198 3 2008 3 78.766 0.190 4 2008 4 78.850 0.189 3 2008 5 78.801 0.168 4 2008 6 78.696 0.244 4 2008 7 78.425 0.162 5 2008 8 78.159 0.200 4 2008 9 78.145 0.173 3 2008 10 78.091 0.178 5 2008 11 77.949 0.272 4 2008 12 78.082 0.268 5 2009 1 78.079 0.201 3 2009 2 78.127 0.175 4 2009 3 78.216 0.146 4 2009 4 78.198 0.279 4 2009 5 78.054 0.166 4 2009 6 77.817 0.195 4 2009 7 77.727 0.189 4 2009 8 77.448 0.162 3 2009 9 77.477 0.167 4 2009 10 77.270 0.151 4 2009 11 77.285 0.119 4 2009 12 77.215 0.144 5 2010 1 77.293 0.157 3 2010 2 77.371 0.174 4 2010 3 77.365 0.165 5 2010 4 77.307 0.185 4 2010 5 77.339 0.165 3 2010 6 77.057 0.215 4 2010 7 76.944 0.219 4 2010 8 76.694 0.157 4 2010 9 76.600 0.135 4 2010 10 76.507 0.166 4 2010 11 76.497 0.184 3 2010 12 76.508 0.171 5 2011 1 76.539 0.181 4 2011 2 76.648 0.192 4 2011 3 76.515 0.206 5 2011 4 76.427 0.138 4 2011 5 76.554 0.208 5 2011 6 76.347 0.164 4 2011 7 nan nan 0 2011 8 76.150 0.157 1 2011 9 75.644 0.194 4 2011 10 75.680 0.140 4 2011 11 75.757 0.171 4 2011 12 75.610 0.217 5 2012 1 75.710 0.232 4 2012 2 75.612 0.272 4 2012 3 75.777 0.186 5 2012 4 75.928 0.170 4 2012 5 75.879 0.141 4 2012 6 75.715 0.220 4 2012 7 75.512 0.207 4 2012 8 75.282 0.208 4 2012 9 75.133 0.227 4 2012 10 75.031 0.288 4 2012 11 75.088 0.227 5 2012 12 75.036 0.234 3 2013 1 75.136 0.193 5 2013 2 75.229 0.178 4 2013 3 75.347 0.211 4 2013 4 75.029 0.385 2 2013 5 75.232 0.319 4 2013 6 75.328 0.228 4 2013 7 74.942 0.525 2 2013 8 nan nan 0 2013 9 nan nan 0 2013 10 74.189 0.222 3 2013 11 74.561 0.209 2 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 74.522 0.246 3 2014 7 74.424 0.243 5 2014 8 74.183 0.283 4 2014 9 74.195 0.313 5 2014 10 73.814 0.253 4 2014 11 73.820 0.267 4 2014 12 73.879 0.203 4 2015 1 73.880 0.246 4 2015 2 74.070 0.159 1 2015 3 73.892 0.225 5 2015 4 74.168 0.231 3 2015 5 74.080 0.198 4 2015 6 73.884 0.144 3 2015 7 73.645 0.281 3 2015 8 73.396 0.214 4 2015 9 73.267 0.334 5 2015 10 73.086 0.153 4 2015 11 73.194 0.227 4 2015 12 73.113 0.225 3 2016 1 73.211 0.226 5 2016 2 73.325 0.342 3 2016 3 73.327 0.356 5 2016 4 73.525 0.549 4 2016 5 73.379 0.563 4 2016 6 73.720 0.319 3 2016 7 nan nan 0 2016 8 73.074 0.262 3 2016 9 72.511 0.179 4 2016 10 72.191 0.199 4 2016 11 nan nan 0 2016 12 nan nan 0 2017 1 nan nan 0 2017 2 73.051 0.269 2 2017 3 72.956 0.667 3 2017 4 73.258 0.407 3 2017 5 72.772 0.240 5 2017 6 72.500 0.234 3 2017 7 72.478 0.235 4 2017 8 72.320 0.247 2 2017 9 72.295 0.509 4 2017 10 72.641 0.714 4 2017 11 72.088 0.294 5 2017 12 71.886 0.235 3 2018 1 72.902 0.170 3 2018 2 72.118 0.403 4 2018 3 72.404 0.407 3 2018 4 72.112 0.203 3 2018 5 72.140 0.221 1 2018 6 72.230 0.320 1 2018 7 nan nan 0 2018 8 71.837 0.279 3 2018 9 71.390 0.393 4 2018 10 71.699 0.381 4 2018 11 71.825 0.249 2 2018 12 71.234 0.238 4 2019 1 71.393 0.233 3 2019 2 71.392 0.294 3 2019 3 71.653 0.234 4 2019 4 71.629 0.179 3 2019 5 72.340 0.287 3 2019 6 71.735 0.486 3 2019 7 71.070 0.264 1 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