# file: smo_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: SMO -- Tutuila, Samoa -- 14.25 S, 170.56 W, 42 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 "smo_F11_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-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 # # Missing value: "nan" # # Data Columns: # yr Year # mon Month # m Monthly mean concentration of F11 in ppt # sd Standard deviation of the mean (or single-sample precision value) # n Number of samples # F11ottoSMOyr F11ottoSMOmon F11ottoSMOm F11ottoSMOsd F11ottoSMOn 1994 1 nan nan 0 1994 2 nan nan 0 1994 3 nan nan 0 1994 4 nan nan 0 1994 5 nan nan 0 1994 6 nan nan 0 1994 7 nan nan 0 1994 8 nan nan 0 1994 9 nan nan 0 1994 10 nan nan 0 1994 11 264.260 0.519 1 1994 12 nan nan 0 1995 1 264.272 0.495 2 1995 2 nan nan 0 1995 3 264.867 0.587 3 1995 4 264.123 0.812 3 1995 5 264.570 0.306 1 1995 6 nan nan 0 1995 7 263.427 0.474 2 1995 8 263.350 0.538 1 1995 9 263.409 0.424 2 1995 10 263.478 0.497 2 1995 11 264.300 0.339 1 1995 12 264.670 0.420 1 1996 1 264.445 0.576 4 1996 2 263.480 0.368 1 1996 3 264.620 0.471 1 1996 4 264.164 0.743 3 1996 5 264.634 0.626 4 1996 6 264.287 0.395 5 1996 7 264.104 0.385 2 1996 8 263.991 0.366 2 1996 9 263.367 1.641 3 1996 10 263.480 0.585 1 1996 11 264.251 1.074 4 1996 12 264.446 0.423 2 1997 1 264.252 0.483 3 1997 2 263.477 0.368 2 1997 3 263.878 0.646 3 1997 4 263.949 0.401 3 1997 5 263.210 0.348 1 1997 6 263.593 0.491 5 1997 7 263.582 0.383 3 1997 8 262.409 0.511 4 1997 9 262.636 0.398 2 1997 10 262.920 1.131 2 1997 11 262.694 0.493 3 1997 12 262.639 1.017 3 1998 1 262.566 1.499 2 1998 2 261.591 0.523 2 1998 3 261.121 0.295 4 1998 4 260.628 0.380 2 1998 5 261.017 0.495 4 1998 6 260.595 0.376 3 1998 7 260.621 0.412 3 1998 8 260.840 0.593 4 1998 9 261.262 0.339 2 1998 10 262.051 0.827 2 1998 11 262.321 0.558 4 1998 12 262.047 0.562 2 1999 1 261.938 0.513 4 1999 2 261.572 0.597 5 1999 3 261.709 0.438 2 1999 4 261.873 0.430 2 1999 5 260.343 0.552 3 1999 6 260.979 0.743 4 1999 7 260.240 0.247 5 1999 8 260.739 0.311 4 1999 9 259.787 0.617 3 1999 10 260.224 0.388 4 1999 11 260.037 0.329 4 1999 12 260.210 0.655 4 2000 1 260.071 0.823 4 2000 2 260.262 0.459 3 2000 3 259.882 0.714 3 2000 4 258.964 1.278 4 2000 5 258.692 0.599 3 2000 6 257.908 0.795 3 2000 7 258.564 0.589 4 2000 8 258.163 0.341 4 2000 9 258.005 0.530 4 2000 10 258.040 0.383 4 2000 11 257.946 0.446 5 2000 12 258.101 0.849 2 2001 1 258.201 0.642 5 2001 2 257.868 0.389 3 2001 3 257.522 0.339 4 2001 4 257.327 1.209 2 2001 5 256.716 0.261 5 2001 6 256.849 0.355 4 2001 7 256.003 0.606 3 2001 8 256.250 0.501 5 2001 9 256.114 0.282 4 2001 10 255.839 0.466 4 2001 11 255.963 0.374 4 2001 12 255.607 0.518 3 2002 1 256.324 0.331 5 2002 2 256.511 0.339 4 2002 3 256.016 0.513 5 2002 4 255.028 0.376 3 2002 5 254.558 0.654 6 2002 6 254.674 0.280 7 2002 7 254.461 0.351 4 2002 8 254.363 0.268 5 2002 9 253.949 0.494 4 2002 10 254.351 0.437 6 2002 11 254.188 0.760 4 2002 12 253.538 0.649 4 2003 1 253.282 0.722 6 2003 2 252.673 0.893 4 2003 3 253.063 0.351 5 2003 4 253.064 0.433 6 2003 5 252.438 0.354 5 2003 6 252.050 0.434 5 2003 7 252.119 0.366 5 2003 8 252.336 0.593 5 2003 9 251.725 0.304 6 2003 10 251.657 0.463 5 2003 11 251.390 0.376 5 2003 12 251.282 0.587 4 2004 1 250.632 0.710 3 2004 2 251.636 0.406 5 2004 3 251.627 0.277 5 2004 4 251.007 0.839 6 2004 5 250.409 0.236 5 2004 6 250.283 0.320 6 2004 7 250.119 0.330 4 2004 8 250.539 0.272 4 2004 9 249.910 0.277 6 2004 10 249.420 0.387 4 2004 11 249.120 0.413 5 2004 12 249.269 0.373 5 2005 1 249.547 0.368 5 2005 2 248.970 0.396 5 2005 3 248.958 0.912 6 2005 4 248.555 0.398 2 2005 5 248.107 0.551 5 2005 6 248.372 0.357 6 2005 7 247.703 0.379 5 2005 8 247.974 0.350 6 2005 9 247.862 0.540 5 2005 10 247.725 0.384 5 2005 11 247.801 0.471 4 2005 12 247.586 0.468 5 2006 1 247.658 0.418 4 2006 2 247.522 0.428 5 2006 3 247.246 0.572 4 2006 4 246.591 0.417 4 2006 5 247.064 0.524 6 2006 6 246.819 0.337 4 2006 7 246.213 0.429 4 2006 8 245.974 0.339 7 2006 9 245.815 0.361 4 2006 10 245.756 0.537 5 2006 11 245.498 0.267 5 2006 12 245.477 0.406 5 2007 1 244.923 0.526 5 2007 2 245.964 0.343 5 2007 3 245.536 0.372 5 2007 4 244.575 0.342 5 2007 5 244.723 0.385 4 2007 6 243.983 0.615 4 2007 7 243.707 0.462 4 2007 8 243.333 0.265 6 2007 9 243.435 0.449 4 2007 10 243.285 0.479 6 2007 11 243.668 0.372 5 2007 12 243.503 0.541 5 2008 1 244.130 0.571 5 2008 2 243.641 0.551 5 2008 3 243.171 0.495 5 2008 4 242.924 0.474 5 2008 5 242.777 0.426 5 2008 6 242.063 0.366 5 2008 7 241.947 0.255 6 2008 8 241.583 0.291 5 2008 9 241.167 0.237 4 2008 10 241.232 0.256 6 2008 11 241.203 0.509 5 2008 12 241.201 0.484 5 2009 1 241.428 0.519 5 2009 2 241.524 0.394 4 2009 3 241.472 0.355 5 2009 4 240.754 0.675 6 2009 5 240.422 0.285 5 2009 6 239.911 0.474 4 2009 7 239.788 0.332 9 2009 8 239.708 0.327 6 2009 9 239.782 0.420 9 2009 10 239.416 0.266 3 2009 11 239.863 0.508 6 2009 12 239.338 0.489 6 2010 1 239.278 0.335 3 2010 2 238.802 0.532 3 2010 3 239.039 0.384 5 2010 4 nan nan 0 2010 5 nan nan 0 2010 6 238.240 0.403 1 2010 7 238.104 0.493 4 2010 8 238.356 0.377 4 2010 9 238.000 0.207 6 2010 10 237.553 0.523 2 2010 11 237.820 0.547 1 2010 12 237.546 0.510 4 2011 1 237.459 0.440 3 2011 2 237.449 0.495 2 2011 3 237.391 0.328 5 2011 4 236.754 0.373 3 2011 5 236.798 0.355 4 2011 6 236.296 0.416 3 2011 7 236.116 0.478 3 2011 8 236.209 0.362 3 2011 9 235.933 0.261 6 2011 10 235.645 0.354 5 2011 11 236.010 0.449 3 2011 12 235.643 0.291 2 2012 1 235.579 0.558 2 2012 2 235.741 0.590 4 2012 3 235.256 0.392 3 2012 4 234.775 0.305 4 2012 5 234.471 0.327 2 2012 6 234.559 0.315 3 2012 7 234.024 0.337 3 2012 8 233.730 0.381 3 2012 9 233.764 0.313 3 2012 10 233.606 0.301 5 2012 11 233.803 0.409 4 2012 12 233.933 0.525 4 2013 1 233.948 0.712 4 2013 2 233.744 0.291 4 2013 3 233.202 0.381 4 2013 4 233.244 0.378 3 2013 5 232.397 0.298 4 2013 6 232.314 0.387 3 2013 7 232.626 0.712 3 2013 8 232.901 0.741 2 2013 9 nan nan 0 2013 10 nan nan 0 2013 11 232.563 0.844 3 2013 12 232.858 0.326 4 2014 1 231.945 0.465 5 2014 2 231.688 0.326 3 2014 3 232.072 0.859 3 2014 4 231.358 0.354 5 2014 5 231.038 0.290 2 2014 6 230.714 0.391 3 2014 7 231.291 0.471 5 2014 8 230.707 0.399 4 2014 9 230.593 0.240 5 2014 10 230.742 0.333 4 2014 11 230.896 0.327 4 2014 12 230.554 0.714 5 2015 1 231.188 0.393 3 2015 2 230.852 0.405 4 2015 3 231.165 0.448 4 2015 4 230.773 0.251 4 2015 5 230.229 0.288 5 2015 6 229.835 0.442 3 2015 7 229.621 0.272 4 2015 8 229.112 0.434 4 2015 9 229.562 0.456 3 2015 10 229.092 0.302 5 2015 11 229.392 0.300 2 2015 12 228.680 0.374 4 2016 1 229.394 0.507 4 2016 2 230.774 1.013 2 2016 3 230.565 0.795 2 2016 4 229.429 1.310 4 2016 5 229.560 0.669 2 2016 6 230.004 0.969 3 2016 7 228.687 0.391 4 2016 8 228.205 0.540 3 2016 9 228.228 0.374 4 2016 10 228.713 1.024 4 2016 11 227.948 0.503 4 2016 12 228.424 0.473 2 2017 1 228.606 0.883 5 2017 2 228.153 0.800 3 2017 3 227.726 1.013 4 2017 4 227.517 0.564 2 2017 5 227.565 0.900 3 2017 6 226.796 1.147 3 2017 7 227.462 0.696 4 2017 8 227.486 0.498 6 2017 9 227.204 1.308 3 2017 10 227.170 0.673 6 2017 11 227.238 0.471 4 2017 12 227.220 0.434 1 2018 1 nan nan 0 2018 2 227.685 0.683 3 2018 3 227.357 0.955 3 2018 4 227.650 0.576 4 2018 5 227.134 0.627 4 2018 6 226.580 0.831 1 2018 7 nan nan 0 2018 8 226.111 0.347 3 2018 9 226.332 1.253 4 2018 10 227.320 0.617 1 2018 11 226.580 0.879 1 2018 12 225.811 0.603 3 2019 1 225.748 0.435 4 2019 2 225.935 0.499 2 2019 3 225.869 0.478 2 2019 4 225.697 0.573 4 2019 5 225.485 0.754 3 2019 6 225.436 0.559 4 2019 7 225.111 0.518 4 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