# file: kum_MC_MM.dat # # Atmospheric measurements of CH3CCl3 (Methyl Chloroform, MC) # # Measurements are from the NOAA/ESRL/GMD/HATS flask program # (http://www.esrl.noaa.gov/gmd/hats/flask/flasks.html). # Instrument ID: Otto # # Location: KUM -- Cape Kumukahi, Hawaii -- 19.52 N, 154.82 W, 3 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 "kum_MC_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: Methyl Chloroform # 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 MC in ppt # sd Standard deviation of the mean (or single-sample precision value) # n Number of samples # MCottoKUMyr MCottoKUMmon MCottoKUMm MCottoKUMsd MCottoKUMn 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 11 100.130 0.560 1 1995 12 100.770 0.823 1 1996 1 99.546 2.536 2 1996 2 100.440 1.070 1 1996 3 98.890 0.735 1 1996 4 95.678 0.820 2 1996 5 93.779 0.990 2 1996 6 92.168 1.895 2 1996 7 89.155 1.742 3 1996 8 87.816 0.488 3 1996 9 86.987 1.049 4 1996 10 86.842 0.686 2 1996 11 85.118 0.884 2 1996 12 85.681 0.779 3 1997 1 84.324 1.994 2 1997 2 83.495 0.720 3 1997 3 83.719 0.665 2 1997 4 80.599 0.425 3 1997 5 80.483 0.574 2 1997 6 79.433 1.407 2 1997 7 76.529 1.038 3 1997 8 75.730 0.776 1 1997 9 75.245 1.464 2 1997 10 74.056 1.195 3 1997 11 74.356 0.822 2 1997 12 74.240 1.317 1 1998 1 71.913 0.766 3 1998 2 71.845 0.692 3 1998 3 70.566 0.890 3 1998 4 69.282 0.941 2 1998 5 68.607 0.621 4 1998 6 66.736 1.195 2 1998 7 64.284 0.740 4 1998 8 63.770 0.852 5 1998 9 61.220 0.350 1 1998 10 60.976 0.353 2 1998 11 60.559 0.266 3 1998 12 59.610 0.281 1 1999 1 59.337 0.256 2 1999 2 58.639 0.580 2 1999 3 58.296 0.279 3 1999 4 56.680 0.263 1 1999 5 56.584 0.405 2 1999 6 55.313 0.708 4 1999 7 53.161 0.705 3 1999 8 52.242 0.364 4 1999 9 52.010 0.272 1 1999 10 51.140 0.335 4 1999 11 50.967 0.467 5 1999 12 50.511 0.336 3 2000 1 50.191 0.332 4 2000 2 49.258 0.503 5 2000 3 49.210 0.368 2 2000 4 47.583 1.184 3 2000 5 46.859 0.265 2 2000 6 45.798 0.558 4 2000 7 44.479 0.676 3 2000 8 43.999 0.585 4 2000 9 42.764 0.636 2 2000 10 42.956 0.230 3 2000 11 42.378 0.243 4 2000 12 41.591 0.503 3 2001 1 41.495 0.309 4 2001 2 41.054 0.868 4 2001 3 40.627 0.477 3 2001 4 40.186 0.259 5 2001 5 38.900 0.241 1 2001 6 38.401 0.716 5 2001 7 37.287 0.360 5 2001 8 36.901 0.255 2 2001 9 36.062 0.222 4 2001 10 36.262 0.198 5 2001 11 35.574 0.404 4 2001 12 35.740 0.164 4 2002 1 35.056 0.201 4 2002 2 35.044 0.216 4 2002 3 34.864 0.512 4 2002 4 34.281 0.785 2 2002 5 33.227 0.299 3 2002 6 32.365 0.363 5 2002 7 31.085 0.279 2 2002 8 30.810 0.221 4 2002 9 30.913 0.205 5 2002 10 30.194 0.158 3 2002 11 30.220 0.505 4 2002 12 30.297 0.262 4 2003 1 29.702 0.297 4 2003 2 29.843 0.262 4 2003 3 29.123 0.185 5 2003 4 28.534 0.354 4 2003 5 27.873 0.659 4 2003 6 27.733 0.277 5 2003 7 26.709 0.217 4 2003 8 26.332 0.179 3 2003 9 25.998 0.209 5 2003 10 25.653 0.293 4 2003 11 25.779 0.179 2 2003 12 25.466 0.410 4 2004 1 25.191 0.308 3 2004 2 24.837 0.199 5 2004 3 24.553 0.551 3 2004 4 24.562 0.175 3 2004 5 23.625 0.185 4 2004 6 23.336 0.319 5 2004 7 22.426 0.312 4 2004 8 21.904 0.302 5 2004 9 21.678 0.186 4 2004 10 21.290 0.122 4 2004 11 20.946 0.193 5 2004 12 20.910 0.234 4 2005 1 20.352 0.112 4 2005 2 20.677 0.160 5 2005 3 20.526 0.363 4 2005 4 20.293 0.193 4 2005 5 19.502 0.272 5 2005 6 19.366 0.189 4 2005 7 18.757 0.209 5 2005 8 18.302 0.213 4 2005 9 18.030 0.204 4 2005 10 17.948 0.175 5 2005 11 17.799 0.243 4 2005 12 17.804 0.159 3 2006 1 17.516 0.301 5 2006 2 17.517 0.234 4 2006 3 17.178 0.444 4 2006 4 16.937 0.389 4 2006 5 16.763 0.289 4 2006 6 15.954 0.168 4 2006 7 15.298 0.216 5 2006 8 15.265 0.243 4 2006 9 15.030 0.171 4 2006 10 14.877 0.212 5 2006 11 14.865 0.177 4 2006 12 14.716 0.229 4 2007 1 14.755 0.235 4 2007 2 14.709 0.230 4 2007 3 14.351 0.284 3 2007 4 14.313 0.252 5 2007 5 13.873 0.147 4 2007 6 13.464 0.238 4 2007 7 13.159 0.184 4 2007 8 12.898 0.185 4 2007 9 12.663 0.232 4 2007 10 12.598 0.183 5 2007 11 12.431 0.239 4 2007 12 12.358 0.218 5 2008 1 12.287 0.246 4 2008 2 12.175 0.173 4 2008 3 11.973 0.180 5 2008 4 11.884 0.193 4 2008 5 11.614 0.169 4 2008 6 11.405 0.186 4 2008 7 11.063 0.145 4 2008 8 10.871 0.190 4 2008 9 10.825 0.252 5 2008 10 10.742 0.255 4 2008 11 10.444 0.266 3 2008 12 10.440 0.224 5 2009 1 10.436 0.289 4 2009 2 10.391 0.229 5 2009 3 10.259 0.257 3 2009 4 9.960 0.168 5 2009 5 9.748 0.217 3 2009 6 9.620 0.293 5 2009 7 9.403 0.167 4 2009 8 8.995 0.157 5 2009 9 9.022 0.168 4 2009 10 8.971 0.154 4 2009 11 8.790 0.140 5 2009 12 8.797 0.171 3 2010 1 8.612 0.195 3 2010 2 8.653 0.181 5 2010 3 8.530 0.127 4 2010 4 8.475 0.179 4 2010 5 8.337 0.150 5 2010 6 8.200 0.164 3 2010 7 7.824 0.158 4 2010 8 7.735 0.158 5 2010 9 7.538 0.166 4 2010 10 7.421 0.165 4 2010 11 7.427 0.239 3 2010 12 7.321 0.227 4 2011 1 7.406 0.184 3 2011 2 7.214 0.167 3 2011 3 7.068 0.132 5 2011 4 7.003 0.207 4 2011 5 6.974 0.155 5 2011 6 6.837 0.183 4 2011 7 6.665 0.127 4 2011 8 6.437 0.222 5 2011 9 6.298 0.141 4 2011 10 6.388 0.167 4 2011 11 6.471 0.207 4 2011 12 6.327 0.148 4 2012 1 6.091 0.185 2 2012 2 6.151 0.139 4 2012 3 5.902 0.204 3 2012 4 5.961 0.194 5 2012 5 5.843 0.162 4 2012 6 5.636 0.114 4 2012 7 5.603 0.150 5 2012 8 5.393 0.203 4 2012 9 5.147 0.226 2 2012 10 5.195 0.215 4 2012 11 5.164 0.109 4 2012 12 4.989 0.146 4 2013 1 5.082 0.212 4 2013 2 5.096 0.298 2 2013 3 5.125 0.158 4 2013 4 4.806 0.161 4 2013 5 4.607 0.139 2 2013 6 4.723 0.264 3 2013 7 4.556 0.169 5 2013 8 4.575 0.165 4 2013 9 4.403 0.332 4 2013 10 4.363 0.307 2 2013 11 4.180 0.210 3 2013 12 4.160 0.215 5 2014 1 4.021 0.163 3 2014 2 4.053 0.175 4 2014 3 3.893 0.216 5 2014 4 3.864 0.197 4 2014 5 3.979 0.174 3 2014 6 4.013 0.170 4 2014 7 3.945 0.144 4 2014 8 3.872 0.149 3 2014 9 3.700 0.161 4 2014 10 3.744 0.168 4 2014 11 3.797 0.171 4 2014 12 3.632 0.172 4 2015 1 3.608 0.168 4 2015 2 3.533 0.184 4 2015 3 3.513 0.195 4 2015 4 3.412 0.187 4 2015 5 3.552 0.211 4 2015 6 3.447 0.143 5 2015 7 3.291 0.162 4 2015 8 3.146 0.151 3 2015 9 3.097 0.179 5 2015 10 3.128 0.196 3 2015 11 3.051 0.191 4 2015 12 2.947 0.194 4 2016 1 3.032 0.194 3 2016 2 2.989 0.148 2 2016 3 2.995 0.157 3 2016 4 2.932 0.207 4 2016 5 2.894 0.154 3 2016 6 2.953 0.139 5 2016 7 2.759 0.147 4 2016 8 2.678 0.132 5 2016 9 2.749 0.172 3 2016 10 2.679 0.159 4 2016 11 2.655 0.174 5 2016 12 2.643 0.194 4 2017 1 2.627 0.194 5 2017 2 2.623 0.178 4 2017 3 2.578 0.115 4 2017 4 2.578 0.203 3 2017 5 2.478 0.143 5 2017 6 2.428 0.116 4 2017 7 2.365 0.097 5 2017 8 2.327 0.126 4 2017 9 2.233 0.169 2 2017 10 2.337 0.112 4 2017 11 2.227 0.119 5 2017 12 2.348 0.131 4 2018 1 2.303 0.175 4 2018 2 2.180 0.145 5 2018 3 2.204 0.166 4 2018 4 2.216 0.149 4 2018 5 2.060 0.298 1 2018 6 2.113 0.133 2 2018 7 nan nan 0 2018 8 2.160 0.116 1 2018 9 2.187 0.143 3 2018 10 2.130 0.217 2 2018 11 nan nan 0 2018 12 nan nan 0 2019 1 nan nan 0 2019 2 nan nan 0 2019 3 nan nan 0 2019 4 nan nan 0 2019 5 nan nan 0 2019 6 nan nan 0 2019 7 nan nan 0 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