# file: hfm_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: HFM -- Harvard Forest, Massachusetts -- 42.54 N, 72.17 W, 340 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 "hfm_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 # F113ottoHFMyr F113ottoHFMmon F113ottoHFMm F113ottoHFMsd F113ottoHFMn 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 nan nan 0 1995 10 nan nan 0 1995 11 87.459 0.306 2 1995 12 nan nan 0 1996 1 88.460 0.345 1 1996 2 nan nan 0 1996 3 nan nan 0 1996 4 87.833 1.944 2 1996 5 89.280 0.504 1 1996 6 86.646 0.417 2 1996 7 nan nan 0 1996 8 86.780 0.326 1 1996 9 86.944 0.419 3 1996 10 88.060 3.905 1 1996 11 86.223 0.361 2 1996 12 nan nan 0 1997 1 86.185 0.165 2 1997 2 86.530 0.337 1 1997 3 86.320 0.248 1 1997 4 86.110 0.464 1 1997 5 86.729 0.332 2 1997 6 86.060 0.162 1 1997 7 85.480 0.371 1 1997 8 86.184 0.509 2 1997 9 85.840 0.201 1 1997 10 86.094 0.870 2 1997 11 nan nan 0 1997 12 86.057 0.650 2 1998 1 86.650 0.248 1 1998 2 85.892 0.280 2 1998 3 nan nan 0 1998 4 nan nan 0 1998 5 86.300 0.317 1 1998 6 86.170 0.177 1 1998 7 85.844 1.580 3 1998 8 85.684 0.537 2 1998 9 85.664 0.237 3 1998 10 85.939 0.707 2 1998 11 84.740 0.444 1 1998 12 84.970 0.845 1 1999 1 85.320 0.249 2 1999 2 85.448 0.367 3 1999 3 85.590 0.395 1 1999 4 85.460 0.681 1 1999 5 84.840 0.135 3 1999 6 85.160 0.299 1 1999 7 84.040 0.146 1 1999 8 nan nan 0 1999 9 85.100 0.227 1 1999 10 nan nan 0 1999 11 85.281 0.764 2 1999 12 84.682 0.225 3 2000 1 84.560 0.180 1 2000 2 84.762 0.302 3 2000 3 85.160 0.544 2 2000 4 84.540 0.436 1 2000 5 84.879 1.717 3 2000 6 84.463 0.349 2 2000 7 84.152 0.269 2 2000 8 83.959 0.488 2 2000 9 83.942 0.208 2 2000 10 84.210 0.193 1 2000 11 84.069 0.373 2 2000 12 84.180 0.206 1 2001 1 84.166 0.346 2 2001 2 84.161 3.373 2 2001 3 84.250 0.304 1 2001 4 84.176 0.301 2 2001 5 83.626 0.239 2 2001 6 83.783 0.226 3 2001 7 83.554 0.200 2 2001 8 83.310 0.319 1 2001 9 83.210 0.356 1 2001 10 83.427 0.297 3 2001 11 83.078 0.182 2 2001 12 83.236 0.111 2 2002 1 82.997 0.201 2 2002 2 83.385 0.382 2 2002 3 83.225 0.265 2 2002 4 83.081 0.344 4 2002 5 82.718 0.410 2 2002 6 82.702 0.339 2 2002 7 82.647 0.178 3 2002 8 82.610 0.194 1 2002 9 82.406 0.154 2 2002 10 82.377 0.234 3 2002 11 82.660 0.384 1 2002 12 82.766 0.339 2 2003 1 82.444 0.247 2 2003 2 82.338 0.165 2 2003 3 82.640 0.337 1 2003 4 82.235 0.417 2 2003 5 82.157 0.164 4 2003 6 82.078 0.306 6 2003 7 81.740 0.207 1 2003 8 81.890 0.198 1 2003 9 81.890 0.267 1 2003 10 81.649 0.190 3 2003 11 81.740 0.233 2 2003 12 81.490 0.247 1 2004 1 81.810 0.120 1 2004 2 81.630 0.232 2 2004 3 81.565 0.353 2 2004 4 81.575 0.290 2 2004 5 81.453 0.134 2 2004 6 81.150 0.264 1 2004 7 81.020 0.185 1 2004 8 81.040 0.254 1 2004 9 81.523 0.229 2 2004 10 81.252 0.390 3 2004 11 80.747 0.325 2 2004 12 nan nan 0 2005 1 80.911 0.148 2 2005 2 80.953 0.341 3 2005 3 80.898 0.223 2 2005 4 80.964 0.172 4 2005 5 81.051 0.218 5 2005 6 80.811 0.239 3 2005 7 80.857 0.216 2 2005 8 80.492 0.204 3 2005 9 80.545 0.291 3 2005 10 80.060 0.356 1 2005 11 80.420 0.297 1 2005 12 80.160 0.552 1 2006 1 81.026 0.686 2 2006 2 80.560 0.235 1 2006 3 80.402 0.178 2 2006 4 80.110 0.258 1 2006 5 79.908 0.205 5 2006 6 80.126 0.217 4 2006 7 79.687 0.252 4 2006 8 79.568 0.330 4 2006 9 79.753 0.307 4 2006 10 79.505 0.235 5 2006 11 79.552 0.262 4 2006 12 79.691 0.398 4 2007 1 79.523 0.198 4 2007 2 79.677 0.167 5 2007 3 79.819 0.165 3 2007 4 79.308 0.388 5 2007 5 79.320 0.180 4 2007 6 79.006 0.339 4 2007 7 78.800 0.309 4 2007 8 78.916 0.175 3 2007 9 79.097 0.380 3 2007 10 78.529 0.551 2 2007 11 78.821 0.204 3 2007 12 78.744 0.222 2 2008 1 78.901 0.653 4 2008 2 78.725 0.208 3 2008 3 78.460 0.213 3 2008 4 78.697 0.239 5 2008 5 78.514 0.390 4 2008 6 78.922 0.210 3 2008 7 78.336 0.265 4 2008 8 78.121 0.188 3 2008 9 77.976 0.270 4 2008 10 77.984 0.133 5 2008 11 78.001 0.202 3 2008 12 77.880 0.318 2 2009 1 77.872 0.146 4 2009 2 77.963 0.248 4 2009 3 78.007 0.176 5 2009 4 77.905 0.144 4 2009 5 77.587 0.236 4 2009 6 77.509 0.297 4 2009 7 77.344 0.362 4 2009 8 77.219 0.157 4 2009 9 77.303 0.362 5 2009 10 77.378 0.250 4 2009 11 77.190 0.152 3 2009 12 77.282 0.166 3 2010 1 77.156 0.200 4 2010 2 77.150 0.138 3 2010 3 77.214 0.105 4 2010 4 77.026 0.205 3 2010 5 77.034 0.229 4 2010 6 76.875 0.174 4 2010 7 76.809 0.345 4 2010 8 76.388 0.399 3 2010 9 76.774 0.218 3 2010 10 76.309 0.190 4 2010 11 76.346 0.173 5 2010 12 76.492 0.181 3 2011 1 76.463 0.194 3 2011 2 76.496 0.221 4 2011 3 76.656 0.180 3 2011 4 76.150 0.495 4 2011 5 76.048 0.307 3 2011 6 76.101 0.142 4 2011 7 75.890 0.308 3 2011 8 75.819 0.182 4 2011 9 75.732 0.155 4 2011 10 75.641 0.192 4 2011 11 75.715 0.272 5 2011 12 75.574 0.189 2 2012 1 75.737 0.267 3 2012 2 75.879 0.169 3 2012 3 75.907 0.309 3 2012 4 75.714 0.208 5 2012 5 75.162 0.217 4 2012 6 75.035 0.183 2 2012 7 75.144 0.296 4 2012 8 74.858 0.212 3 2012 9 74.840 0.357 2 2012 10 75.067 0.289 3 2012 11 74.962 0.177 3 2012 12 75.221 0.359 2 2013 1 75.276 0.303 2 2013 2 75.192 0.254 4 2013 3 75.311 0.217 2 2013 4 75.028 0.341 3 2013 5 75.110 1.049 1 2013 6 74.700 0.377 1 2013 7 74.408 0.411 2 2013 8 74.020 0.761 1 2013 9 nan nan 0 2013 10 nan nan 0 2013 11 74.409 0.371 2 2013 12 74.294 0.227 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 74.333 0.294 3 2014 8 74.225 0.267 4 2014 9 74.223 0.321 4 2014 10 74.102 0.277 4 2014 11 73.905 0.248 3 2014 12 73.954 0.236 3 2015 1 73.889 0.233 4 2015 2 74.059 0.306 3 2015 3 73.970 0.239 1 2015 4 74.213 0.233 3 2015 5 74.134 0.212 2 2015 6 73.809 0.171 4 2015 7 73.456 0.172 3 2015 8 73.397 0.205 4 2015 9 73.828 0.508 4 2015 10 72.876 0.163 2 2015 11 72.921 0.137 4 2015 12 73.343 0.377 3 2016 1 73.345 0.237 2 2016 2 nan nan 0 2016 3 73.210 0.291 1 2016 4 73.524 0.258 3 2016 5 73.253 0.311 3 2016 6 73.509 0.357 2 2016 7 73.140 0.408 1 2016 8 72.712 0.743 4 2016 9 72.576 0.259 2 2016 10 73.240 0.309 1 2016 11 72.368 0.180 3 2016 12 72.476 0.250 2 2017 1 72.567 0.124 3 2017 2 72.528 0.332 3 2017 3 72.963 0.236 2 2017 4 72.490 0.240 1 2017 5 72.397 0.497 3 2017 6 72.320 0.560 3 2017 7 72.858 0.382 2 2017 8 72.426 0.768 3 2017 9 72.080 0.368 4 2017 10 72.353 0.785 2 2017 11 72.088 0.220 3 2017 12 72.401 0.280 3 2018 1 72.428 0.418 4 2018 2 72.436 0.871 3 2018 3 72.361 0.325 3 2018 4 72.618 0.417 2 2018 5 73.060 0.279 1 2018 6 72.107 0.465 3 2018 7 nan nan 0 2018 8 71.200 0.229 1 2018 9 71.143 0.530 2 2018 10 71.434 0.516 2 2018 11 72.260 0.973 3 2018 12 71.293 0.222 3 2019 1 71.196 0.204 4 2019 2 71.317 0.222 2 2019 3 nan nan 0 2019 4 72.171 0.364 4 2019 5 71.609 0.685 4 2019 6 71.483 0.329 3 2019 7 70.801 0.398 3 2019 8 71.210 0.305 1 2019 9 nan nan 0 2019 10 nan nan 0 2019 11 nan nan 0 2019 12 nan nan 0