# file: brw_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: BRW -- Barrow, Alaska -- 71.32 N, 156.61 W, 11 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 "brw_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 # F113ottoBRWyr F113ottoBRWmon F113ottoBRWm F113ottoBRWsd F113ottoBRWn 1995 1 nan nan 0 1995 2 87.380 1.092 1 1995 3 87.555 0.824 2 1995 4 87.000 1.331 1 1995 5 86.700 1.006 1 1995 6 87.470 0.697 1 1995 7 nan nan 0 1995 8 87.270 0.498 1 1995 9 86.977 0.333 3 1995 10 86.530 0.298 1 1995 11 86.960 0.248 1 1995 12 86.740 0.279 1 1996 1 nan nan 0 1996 2 86.769 0.194 4 1996 3 86.854 0.344 2 1996 4 86.895 0.179 4 1996 5 86.829 0.165 5 1996 6 86.684 0.239 2 1996 7 86.428 0.243 4 1996 8 86.653 0.287 2 1996 9 86.453 0.190 4 1996 10 86.309 0.212 3 1996 11 86.207 0.154 4 1996 12 86.356 0.199 4 1997 1 86.436 0.179 4 1997 2 86.203 0.158 4 1997 3 86.362 0.256 4 1997 4 86.372 0.177 4 1997 5 86.351 0.217 5 1997 6 86.244 0.166 4 1997 7 85.991 0.138 3 1997 8 85.706 0.192 5 1997 9 nan nan 0 1997 10 85.608 0.168 5 1997 11 85.573 0.200 3 1997 12 85.813 0.219 4 1998 1 85.650 0.153 4 1998 2 85.841 0.247 2 1998 3 85.742 0.157 3 1998 4 85.963 0.205 4 1998 5 85.642 0.204 4 1998 6 85.591 0.389 2 1998 7 85.389 0.211 4 1998 8 85.220 0.284 4 1998 9 85.014 0.281 3 1998 10 85.098 0.286 3 1998 11 84.883 0.203 4 1998 12 84.822 0.204 4 1999 1 84.870 0.314 5 1999 2 85.144 0.198 4 1999 3 85.399 0.289 2 1999 4 85.184 0.169 4 1999 5 85.017 0.205 4 1999 6 85.204 0.166 2 1999 7 84.849 0.129 3 1999 8 84.416 0.180 4 1999 9 84.588 0.269 3 1999 10 84.475 0.223 5 1999 11 84.419 0.226 2 1999 12 84.561 0.224 4 2000 1 84.656 0.224 3 2000 2 84.678 0.252 4 2000 3 84.804 0.201 4 2000 4 84.712 0.205 2 2000 5 84.621 0.245 4 2000 6 84.178 0.209 4 2000 7 84.358 0.402 2 2000 8 84.143 0.261 4 2000 9 83.697 0.257 4 2000 10 83.859 0.191 4 2000 11 83.912 0.255 4 2000 12 84.100 0.251 5 2001 1 83.861 0.246 2 2001 2 83.957 0.150 4 2001 3 83.855 0.107 3 2001 4 83.965 0.190 3 2001 5 83.811 0.148 4 2001 6 83.721 0.304 5 2001 7 83.525 0.327 3 2001 8 83.086 0.180 4 2001 9 83.214 0.242 4 2001 10 83.242 0.149 3 2001 11 83.142 0.159 5 2001 12 82.900 0.170 1 2002 1 83.251 0.174 4 2002 2 83.078 0.147 3 2002 3 83.135 0.185 5 2002 4 83.230 0.169 1 2002 5 82.887 0.192 3 2002 6 82.901 0.242 3 2002 7 82.841 0.229 2 2002 8 82.657 0.180 2 2002 9 82.522 0.174 2 2002 10 82.445 0.145 4 2002 11 82.490 0.169 5 2002 12 82.412 0.243 2 2003 1 82.294 0.211 2 2003 2 82.460 0.139 5 2003 3 82.437 0.189 3 2003 4 82.220 0.181 3 2003 5 82.246 0.198 6 2003 6 81.945 0.372 3 2003 7 81.700 0.246 1 2003 8 81.652 0.241 5 2003 9 81.624 0.190 3 2003 10 81.474 0.222 5 2003 11 81.450 0.161 3 2003 12 81.679 0.216 3 2004 1 81.752 0.188 4 2004 2 81.699 0.271 3 2004 3 81.493 0.131 5 2004 4 81.427 0.216 5 2004 5 81.416 0.198 2 2004 6 81.133 0.226 4 2004 7 81.100 0.233 4 2004 8 80.825 0.185 3 2004 9 80.939 0.255 4 2004 10 80.745 0.267 4 2004 11 80.826 0.219 3 2004 12 nan nan 0 2005 1 80.892 0.163 4 2005 2 80.809 0.180 4 2005 3 80.733 0.196 4 2005 4 80.451 0.259 3 2005 5 80.868 0.235 4 2005 6 80.792 0.184 5 2005 7 80.804 0.410 4 2005 8 80.195 0.168 3 2005 9 80.152 0.230 5 2005 10 80.076 0.202 4 2005 11 79.966 0.319 4 2005 12 80.245 0.269 5 2006 1 80.192 0.211 3 2006 2 80.219 0.215 4 2006 3 80.327 0.184 3 2006 4 80.197 0.241 4 2006 5 80.032 0.220 4 2006 6 79.965 0.427 4 2006 7 79.510 0.496 4 2006 8 79.508 0.315 5 2006 9 79.491 0.276 4 2006 10 79.357 0.258 4 2006 11 79.449 0.168 4 2006 12 79.504 0.215 3 2007 1 79.356 0.214 2 2007 2 79.413 0.191 4 2007 3 79.358 0.201 4 2007 4 79.123 0.158 4 2007 5 79.189 0.267 2 2007 6 79.159 0.208 3 2007 7 78.874 0.205 2 2007 8 78.569 0.304 2 2007 9 78.395 0.189 4 2007 10 78.415 0.181 4 2007 11 78.592 0.188 2 2007 12 78.512 0.502 2 2008 1 78.620 0.774 1 2008 2 78.702 0.314 4 2008 3 78.770 0.181 1 2008 4 78.300 0.361 2 2008 5 78.319 0.547 3 2008 6 78.382 0.454 4 2008 7 77.823 0.188 4 2008 8 78.224 0.304 2 2008 9 77.911 0.204 2 2008 10 78.032 0.127 4 2008 11 77.956 0.219 3 2008 12 77.757 0.193 5 2009 1 77.822 0.182 4 2009 2 77.893 0.239 4 2009 3 78.067 0.198 3 2009 4 77.741 0.165 2 2009 5 77.897 0.180 4 2009 6 77.780 0.146 4 2009 7 77.428 0.156 3 2009 8 77.351 0.161 3 2009 9 77.267 0.167 5 2009 10 77.390 0.234 3 2009 11 77.256 0.135 5 2009 12 77.290 0.153 4 2010 1 77.219 0.153 5 2010 2 77.156 0.191 4 2010 3 77.192 0.193 4 2010 4 77.123 0.201 5 2010 5 77.132 0.138 4 2010 6 76.724 0.283 4 2010 7 76.318 0.157 5 2010 8 76.660 0.207 4 2010 9 76.317 0.186 3 2010 10 76.213 0.154 4 2010 11 76.301 0.314 4 2010 12 76.298 0.181 5 2011 1 76.471 0.189 4 2011 2 76.413 0.204 3 2011 3 76.343 0.145 4 2011 4 76.055 0.243 4 2011 5 76.048 0.268 3 2011 6 76.155 0.210 4 2011 7 75.757 0.252 5 2011 8 75.678 0.139 3 2011 9 75.808 0.298 3 2011 10 75.546 0.165 3 2011 11 75.637 0.149 5 2011 12 75.864 0.141 2 2012 1 75.680 0.134 4 2012 2 75.576 0.201 4 2012 3 75.849 0.209 3 2012 4 75.885 0.267 2 2012 5 75.687 0.232 5 2012 6 75.514 0.253 4 2012 7 75.161 0.352 4 2012 8 74.847 0.400 5 2012 9 74.776 0.301 4 2012 10 74.868 0.198 4 2012 11 75.046 0.280 5 2012 12 75.101 0.188 5 2013 1 75.241 0.253 3 2013 2 75.335 0.227 4 2013 3 75.307 0.241 4 2013 4 75.445 0.215 4 2013 5 74.707 0.188 4 2013 6 74.862 0.408 4 2013 7 74.538 0.343 5 2013 8 74.077 0.617 2 2013 9 nan nan 0 2013 10 nan nan 0 2013 11 74.183 0.180 2 2013 12 74.356 0.246 4 2014 1 74.660 0.264 1 2014 2 nan nan 0 2014 3 nan nan 0 2014 4 nan nan 0 2014 5 nan nan 0 2014 6 74.600 0.357 1 2014 7 74.360 0.246 3 2014 8 73.776 0.195 3 2014 9 74.065 0.134 4 2014 10 73.978 0.108 4 2014 11 73.744 0.210 3 2014 12 73.844 0.208 5 2015 1 73.882 0.220 4 2015 2 74.212 0.261 5 2015 3 73.939 0.250 4 2015 4 74.085 0.231 4 2015 5 73.752 0.265 3 2015 6 73.524 0.331 5 2015 7 73.408 0.276 4 2015 8 73.465 0.204 4 2015 9 73.182 0.356 4 2015 10 73.285 0.145 5 2015 11 73.155 0.230 5 2015 12 73.245 0.310 4 2016 1 73.406 0.190 4 2016 2 73.372 0.393 5 2016 3 73.361 0.505 3 2016 4 73.557 0.391 5 2016 5 73.451 0.362 4 2016 6 73.654 0.377 4 2016 7 73.483 0.405 3 2016 8 73.404 0.381 4 2016 9 73.252 0.460 2 2016 10 72.542 0.460 2 2016 11 72.568 0.559 3 2016 12 72.363 0.343 2 2017 1 72.169 0.233 2 2017 2 72.422 0.339 2 2017 3 72.302 0.237 3 2017 4 72.725 0.365 3 2017 5 72.357 0.223 3 2017 6 72.219 0.236 2 2017 7 72.336 0.279 4 2017 8 72.185 0.388 4 2017 9 72.071 0.424 3 2017 10 72.055 0.312 4 2017 11 72.284 0.569 5 2017 12 72.074 0.312 4 2018 1 72.698 0.550 4 2018 2 72.196 0.511 5 2018 3 72.080 0.479 4 2018 4 72.269 0.483 4 2018 5 72.368 0.403 3 2018 6 72.099 0.191 2 2018 7 nan nan 0 2018 8 nan nan 0 2018 9 71.512 0.172 3 2018 10 71.373 0.430 5 2018 11 71.618 0.272 3 2018 12 71.384 0.253 3 2019 1 71.299 0.195 4 2019 2 71.356 0.234 4 2019 3 71.833 0.555 3 2019 4 72.060 0.399 4 2019 5 72.099 0.293 5 2019 6 71.433 0.250 4 2019 7 70.912 0.189 4 2019 8 71.430 0.349 1 2019 9 nan nan 0 2019 10 nan nan 0 2019 11 nan nan 0 2019 12 nan nan 0