# file: psa_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: PSA -- Palmer Station, Antarctica -- 64.92 S, 64.00 W, 10 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 "psa_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 # F11ottoPSAyr F11ottoPSAmon F11ottoPSAm F11ottoPSAsd F11ottoPSAn 2001 1 nan nan 0 2001 2 nan nan 0 2001 3 255.690 0.322 1 2001 4 255.230 0.360 1 2001 5 255.230 0.357 1 2001 6 255.057 1.032 2 2001 7 255.410 0.601 1 2001 8 256.070 0.392 1 2001 9 256.407 0.535 2 2001 10 nan nan 0 2001 11 256.320 0.436 1 2001 12 255.370 0.314 1 2002 1 255.090 0.313 1 2002 2 255.577 0.590 2 2002 3 254.380 0.470 1 2002 4 254.410 1.742 1 2002 5 253.670 0.319 1 2002 6 253.390 0.266 1 2002 7 nan nan 0 2002 8 nan nan 0 2002 9 nan nan 0 2002 10 nan nan 0 2002 11 253.287 0.813 2 2002 12 253.310 0.462 1 2003 1 252.550 0.469 1 2003 2 nan nan 0 2003 3 251.970 0.480 1 2003 4 252.400 1.294 1 2003 5 251.637 0.288 2 2003 6 252.340 0.901 2 2003 7 nan nan 0 2003 8 252.740 1.625 1 2003 9 251.583 0.533 2 2003 10 251.530 0.433 1 2003 11 251.481 0.390 2 2003 12 251.554 0.308 2 2004 1 251.237 0.296 3 2004 2 250.529 0.278 2 2004 3 250.313 0.370 2 2004 4 249.589 0.348 2 2004 5 249.431 0.358 2 2004 6 249.171 0.352 3 2004 7 249.056 0.322 4 2004 8 249.509 0.338 2 2004 9 249.169 0.408 2 2004 10 nan nan 0 2004 11 nan nan 0 2004 12 nan nan 0 2005 1 nan nan 0 2005 2 248.183 0.439 3 2005 3 247.379 0.442 2 2005 4 247.124 0.414 2 2005 5 247.234 0.451 2 2005 6 247.220 0.297 2 2005 7 247.509 0.762 2 2005 8 247.512 0.375 2 2005 9 247.181 0.306 2 2005 10 247.167 0.375 2 2005 11 247.115 0.653 2 2005 12 247.070 0.526 1 2006 1 246.889 0.399 2 2006 2 246.318 0.494 3 2006 3 246.392 0.508 2 2006 4 245.700 0.519 1 2006 5 245.898 0.498 2 2006 6 245.848 0.446 2 2006 7 245.201 0.341 3 2006 8 245.470 0.309 1 2006 9 245.380 0.324 1 2006 10 245.277 0.418 2 2006 11 244.590 0.647 1 2006 12 244.110 0.817 1 2007 1 244.650 0.404 2 2007 2 244.608 0.290 2 2007 3 243.930 0.648 2 2007 4 243.793 0.943 2 2007 5 242.732 0.208 3 2007 6 242.684 0.441 2 2007 7 242.710 0.790 1 2007 8 242.855 0.316 2 2007 9 243.136 0.560 2 2007 10 242.867 0.434 2 2007 11 242.997 0.474 2 2007 12 242.855 0.379 3 2008 1 242.520 0.482 1 2008 2 241.610 0.635 1 2008 3 242.152 0.555 2 2008 4 241.055 0.283 2 2008 5 240.931 0.303 2 2008 6 240.706 0.382 3 2008 7 240.591 0.377 2 2008 8 240.680 0.425 1 2008 9 240.760 0.496 2 2008 10 240.525 0.590 2 2008 11 240.220 0.811 1 2008 12 nan nan 0 2009 1 nan nan 0 2009 2 nan nan 0 2009 3 nan nan 0 2009 4 nan nan 0 2009 5 nan nan 0 2009 6 nan nan 0 2009 7 nan nan 0 2009 8 238.985 0.270 2 2009 9 239.202 0.267 2 2009 10 239.135 0.316 2 2009 11 nan nan 0 2009 12 239.200 0.347 1 2010 1 238.740 0.329 1 2010 2 238.370 0.452 1 2010 3 237.670 0.424 1 2010 4 237.522 0.288 2 2010 5 237.484 0.280 3 2010 6 237.363 0.360 2 2010 7 237.859 0.363 2 2010 8 237.490 0.336 1 2010 9 237.576 0.330 2 2010 10 237.430 0.333 1 2010 11 236.787 0.273 3 2010 12 236.804 0.271 2 2011 1 236.498 0.318 2 2011 2 236.374 0.541 2 2011 3 236.155 0.400 2 2011 4 235.669 0.239 3 2011 5 235.770 0.246 1 2011 6 235.194 0.348 2 2011 7 235.320 0.316 1 2011 8 235.198 0.296 2 2011 9 235.180 0.293 2 2011 10 235.200 0.549 1 2011 11 nan nan 0 2011 12 235.005 0.308 2 2012 1 nan nan 0 2012 2 nan nan 0 2012 3 234.310 0.356 1 2012 4 234.050 0.356 3 2012 5 nan nan 0 2012 6 nan nan 0 2012 7 nan nan 0 2012 8 nan nan 0 2012 9 nan nan 0 2012 10 nan nan 0 2012 11 nan nan 0 2012 12 nan nan 0 2013 1 nan nan 0 2013 2 nan nan 0 2013 3 nan nan 0 2013 4 nan nan 0 2013 5 232.070 0.400 1 2013 6 232.070 0.307 1 2013 7 232.065 0.520 2 2013 8 231.780 0.481 1 2013 9 230.950 0.529 1 2013 10 231.635 0.589 2 2013 11 231.193 0.364 2 2013 12 231.145 0.364 2 2014 1 230.525 0.477 2 2014 2 230.160 0.808 2 2014 3 229.510 0.573 1 2014 4 229.574 0.426 3 2014 5 229.278 0.569 2 2014 6 229.326 0.423 2 2014 7 229.390 0.304 2 2014 8 229.630 0.401 1 2014 9 229.930 0.323 1 2014 10 nan nan 0 2014 11 nan nan 0 2014 12 nan nan 0 2015 1 nan nan 0 2015 2 229.460 0.457 1 2015 3 229.223 0.415 2 2015 4 228.933 0.323 3 2015 5 228.890 0.569 1 2015 6 228.692 0.446 2 2015 7 nan nan 0 2015 8 228.494 0.618 2 2015 9 228.616 0.316 2 2015 10 nan nan 0 2015 11 228.558 1.339 2 2015 12 nan nan 0 2016 1 228.429 1.363 2 2016 2 227.910 1.721 1 2016 3 226.980 1.008 1 2016 4 227.340 1.722 1 2016 5 226.890 1.766 1 2016 6 nan nan 0 2016 7 nan nan 0 2016 8 226.065 0.555 2 2016 9 226.260 0.540 1 2016 10 226.040 0.349 1 2016 11 226.570 0.553 1 2016 12 226.674 0.577 2 2017 1 226.470 0.409 1 2017 2 226.565 0.679 2 2017 3 226.670 0.659 1 2017 4 226.667 0.762 2 2017 5 226.435 0.515 2 2017 6 226.017 0.629 2 2017 7 226.510 0.558 1 2017 8 226.625 0.434 2 2017 9 226.869 0.604 2 2017 10 226.893 0.347 2 2017 11 227.461 0.688 2 2017 12 227.040 0.315 2 2018 1 226.610 0.774 1 2018 2 226.500 0.521 1 2018 3 nan nan 0 2018 4 nan nan 0 2018 5 nan nan 0 2018 6 226.130 0.693 1 2018 7 226.210 0.663 1 2018 8 225.910 0.573 1 2018 9 226.424 0.381 2 2018 10 226.416 0.675 2 2018 11 226.139 0.631 2 2018 12 226.039 0.631 2 2019 1 225.963 0.439 2 2019 2 225.790 0.385 1 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