# file: spo_F11_MM.dat # date: 2023-04-13 # # Chloroflurocarbon-11 (F11) data from hourly in situ samples analyzed on a gas chromatograph located # at South Pole (SPO) station Antarctica (89.98 S, 24.80 W, elevation: 2810 m). # # Atmospheric measurements from the NOAA/GML Chromatograph for Atmospheric Trace # Species (CATS) program. This GC replaces the RITS GCs operated during the # period of 1986 through 2000. This work was funded in part by the Atmospheric Chemistry Project of # NOAA's Climate and Global Change Program. # # Data use policy see https://gml.noaa.gov/hats/hats_datause.html # # Citation: # G.S. Dutton and B.D. Hall (2023), # Global Atmospheric Chloroflurocarbon-11 Dry Air Mole Fractions from the # NOAA GML Halocarbons in situ Network, 1998-2023, Version: 2023-04-13, # https://doi.org/10.7289/V5X0659V # # For contact information see https://gml.noaa.gov/about/stafflist.html # # Calibration scale used: NOAA 2016 # More information about the calibration scale can be found at: https://gml.noaa.gov/ccl/ # # See (http://www.esrl.noaa.gov/gmd/obop/) for station statistics and personnel. # # The CATS GCs sample air once an hour. Monthly median data are provided in parts-per-trillion, ppt. # Abbreviations used: # yr=year, mon=month, m=monthly data; gc=type of sample--in situ GC data, sd=standard deviation of samples, # n=number of samples, brw=Pt. Barrow, Alaska, sum=Summit, Greenland, nwr= Niwot Ridge, Colorado # mlo=Mauna Loa, Hawaii, smo = American Samoa, spo=South Pole, Antarctica # NAN=not a number or no data, and space(s) is the delimiter. # # The standard deviation (unc) reported is the estimate of insturmental precision. # The standard deviation (sd) reported is the estimate of atmospheric variability. # # year, month, monthly median of F11 in ppt, uncertainty (unc), std. dev. (sd), number of samples # F11catsSPOyr F11catsSPOmon F11catsSPOm F11catsSPOunc F11catsSPOsd F11catsSPOn 1998 1 nan nan nan 0 1998 2 nan nan nan 0 1998 3 nan nan nan 0 1998 4 nan nan nan 0 1998 5 nan nan nan 0 1998 6 nan nan nan 0 1998 7 nan nan nan 0 1998 8 nan nan nan 0 1998 9 nan nan nan 0 1998 10 nan nan nan 0 1998 11 nan nan nan 0 1998 12 nan nan nan 0 1999 1 nan nan nan 0 1999 2 nan nan nan 0 1999 3 nan nan nan 0 1999 4 nan nan nan 0 1999 5 nan nan nan 0 1999 6 nan nan nan 0 1999 7 nan nan nan 0 1999 8 nan nan nan 0 1999 9 nan nan nan 0 1999 10 nan nan nan 0 1999 11 nan nan nan 0 1999 12 nan nan nan 0 2000 1 nan nan nan 0 2000 2 258.01 0.38 0.37 282 2000 3 257.62 0.42 0.45 542 2000 4 258.15 0.48 0.54 542 2000 5 258.11 0.44 0.43 592 2000 6 258.05 0.39 0.40 453 2000 7 258.07 0.45 0.43 366 2000 8 258.32 0.43 0.39 497 2000 9 nan nan nan 0 2000 10 257.53 0.54 0.50 110 2000 11 257.49 0.59 0.45 233 2000 12 257.27 1.37 0.82 437 2001 1 257.17 1.51 0.99 472 2001 2 256.61 1.66 1.01 282 2001 3 257.03 1.65 0.95 198 2001 4 255.93 1.56 1.02 410 2001 5 255.63 1.64 0.97 403 2001 6 255.87 1.23 0.79 369 2001 7 256.09 1.10 0.80 376 2001 8 256.21 1.21 0.82 265 2001 9 256.16 1.26 0.97 320 2001 10 256.51 1.56 1.23 294 2001 11 256.52 1.78 1.72 460 2001 12 256.21 1.60 1.48 389 2002 1 256.21 2.33 1.73 224 2002 2 255.94 0.60 0.55 315 2002 3 255.48 0.38 0.42 519 2002 4 255.13 0.38 0.44 431 2002 5 254.86 0.53 0.41 379 2002 6 254.87 0.95 0.55 85 2002 7 254.96 0.67 0.46 350 2002 8 254.73 0.60 0.50 458 2002 9 254.30 0.59 0.43 347 2002 10 254.20 0.40 0.40 404 2002 11 253.76 0.42 0.42 164 2002 12 253.62 0.38 0.38 568 2003 1 253.37 0.42 0.42 496 2003 2 253.17 0.41 0.38 510 2003 3 252.99 0.70 0.47 629 2003 4 252.86 0.79 0.48 523 2003 5 252.73 0.79 0.50 624 2003 6 252.86 1.26 0.63 613 2003 7 253.06 1.02 0.59 616 2003 8 253.12 0.86 0.59 655 2003 9 253.01 0.92 0.64 503 2003 10 252.42 0.73 0.68 279 2003 11 252.31 0.73 0.43 275 2003 12 251.77 0.69 0.61 458 2004 1 251.75 0.51 0.76 444 2004 2 251.30 0.57 0.47 580 2004 3 251.05 0.46 0.43 589 2004 4 251.20 0.55 0.45 623 2004 5 250.98 0.49 0.44 655 2004 6 250.95 0.41 0.46 592 2004 7 251.12 0.39 0.50 627 2004 8 250.91 0.43 0.37 626 2004 9 250.98 0.58 0.62 614 2004 10 250.90 0.64 0.45 650 2004 11 250.52 0.65 0.67 564 2004 12 250.00 0.44 0.44 639 2005 1 249.35 0.37 0.53 665 2005 2 249.12 0.36 0.37 507 2005 3 248.43 0.45 0.47 174 2005 4 248.28 0.38 0.35 480 2005 5 248.04 0.37 0.34 483 2005 6 248.11 0.40 0.42 365 2005 7 248.24 0.43 0.41 691 2005 8 248.21 0.41 0.44 672 2005 9 247.80 0.40 0.41 666 2005 10 247.73 0.44 0.44 695 2005 11 247.61 0.31 0.37 651 2005 12 247.37 0.44 0.53 475 2006 1 247.23 0.40 0.74 498 2006 2 246.81 0.44 0.74 637 2006 3 246.31 0.48 0.65 718 2006 4 245.95 0.44 0.61 677 2006 5 245.79 0.39 0.63 674 2006 6 245.59 0.53 0.63 680 2006 7 245.67 0.46 0.63 707 2006 8 245.66 0.47 0.59 688 2006 9 245.65 0.42 0.55 679 2006 10 245.48 0.31 0.50 724 2006 11 245.37 0.29 0.50 651 2006 12 245.30 0.27 0.47 649 2007 1 245.11 0.25 0.45 617 2007 2 244.61 0.31 0.43 321 2007 3 244.11 0.38 0.50 318 2007 4 243.69 0.53 0.54 335 2007 5 243.17 0.43 0.56 345 2007 6 242.97 0.40 0.47 341 2007 7 242.88 0.36 0.50 357 2007 8 242.85 0.35 0.47 339 2007 9 242.92 0.41 0.53 332 2007 10 242.81 0.40 0.54 354 2007 11 242.98 0.33 0.51 337 2007 12 242.95 0.24 0.45 341 2008 1 242.97 0.27 0.50 334 2008 2 242.54 0.26 0.47 332 2008 3 241.75 0.31 0.55 510 2008 4 241.34 0.30 0.53 666 2008 5 241.14 0.29 0.47 703 2008 6 241.10 0.29 0.56 691 2008 7 241.04 0.40 0.66 705 2008 8 241.19 0.41 0.68 635 2008 9 240.99 0.40 0.71 689 2008 10 240.91 0.39 0.70 705 2008 11 240.96 0.43 0.77 667 2008 12 241.10 0.39 0.69 704 2009 1 241.21 0.46 0.64 612 2009 2 241.14 0.47 0.67 664 2009 3 240.47 0.42 0.79 712 2009 4 239.94 0.46 0.79 689 2009 5 239.81 0.45 0.62 737 2009 6 239.70 0.41 0.61 699 2009 7 239.52 0.30 0.43 719 2009 8 239.46 0.28 0.41 694 2009 9 239.43 0.32 0.45 707 2009 10 239.34 0.38 0.58 697 2009 11 239.28 0.38 0.58 697 2009 12 239.23 0.43 0.75 704 2010 1 238.98 0.39 0.91 700 2010 2 238.34 0.49 0.94 631 2010 3 237.78 0.50 1.04 687 2010 4 237.72 0.51 0.83 681 2010 5 237.59 0.53 0.82 689 2010 6 237.68 0.76 1.05 672 2010 7 237.71 0.85 1.32 682 2010 8 237.44 0.80 1.21 698 2010 9 237.25 0.38 0.57 681 2010 10 237.03 0.35 0.47 628 2010 11 236.95 0.43 0.68 669 2010 12 236.83 0.52 0.78 629 2011 1 236.69 0.53 0.77 719 2011 2 236.33 0.68 0.86 635 2011 3 235.95 0.67 0.88 713 2011 4 235.56 0.63 0.89 686 2011 5 235.23 0.72 1.00 691 2011 6 235.28 0.57 0.77 696 2011 7 235.32 0.53 0.69 673 2011 8 nan nan nan 0 2011 9 nan nan nan 0 2011 10 nan nan nan 0 2011 11 234.98 0.60 0.77 205 2011 12 234.96 0.46 0.62 714 2012 1 234.76 0.45 0.65 556 2012 2 234.25 0.54 0.63 561 2012 3 233.75 0.80 0.64 135 2012 4 233.42 0.56 0.55 251 2012 5 233.43 0.70 0.52 427 2012 6 233.27 0.49 0.59 280 2012 7 233.40 0.33 0.42 404 2012 8 233.34 0.30 0.35 532 2012 9 233.28 0.44 0.43 545 2012 10 233.21 0.34 0.42 679 2012 11 232.92 0.25 0.38 658 2012 12 232.60 0.23 0.36 694 2013 1 232.34 0.25 0.37 681 2013 2 232.17 0.29 0.36 637 2013 3 231.98 0.24 0.37 703 2013 4 231.72 0.26 0.44 670 2013 5 231.58 0.25 0.40 696 2013 6 231.44 0.28 0.42 690 2013 7 231.64 0.26 0.38 673 2013 8 231.39 0.28 0.49 720 2013 9 231.23 0.27 0.48 688 2013 10 231.25 0.25 0.38 695 2013 11 231.17 0.27 0.40 641 2013 12 230.98 0.24 0.40 677 2014 1 230.83 0.19 0.30 695 2014 2 230.52 0.26 0.36 633 2014 3 230.21 0.33 0.34 696 2014 4 230.00 0.26 0.34 659 2014 5 229.86 0.24 0.36 720 2014 6 229.92 0.25 0.35 612 2014 7 230.12 0.26 0.35 553 2014 8 230.10 0.25 0.36 712 2014 9 230.06 0.25 0.34 686 2014 10 230.13 0.22 0.35 647 2014 11 230.02 0.24 0.33 626 2014 12 229.92 0.23 0.34 659 2015 1 229.75 0.21 0.31 429 2015 2 229.43 0.24 0.32 576 2015 3 229.34 0.19 0.29 673 2015 4 229.25 0.19 0.31 644 2015 5 229.10 0.22 0.31 665 2015 6 229.01 0.21 0.30 635 2015 7 229.13 0.24 0.34 649 2015 8 229.09 0.24 0.32 625 2015 9 229.08 0.23 0.33 635 2015 10 228.97 0.24 0.34 694 2015 11 228.94 0.24 0.31 665 2015 12 228.83 0.18 0.30 649 2016 1 228.80 0.19 0.33 650 2016 2 228.53 0.20 0.34 517 2016 3 228.24 0.19 0.30 659 2016 4 227.92 0.22 0.37 563 2016 5 227.59 0.29 0.37 682 2016 6 227.39 0.23 0.32 677 2016 7 227.45 0.21 0.31 682 2016 8 227.48 0.24 0.40 695 2016 9 227.61 0.22 0.37 685 2016 10 227.44 0.21 0.31 714 2016 11 227.22 0.22 0.34 686 2016 12 227.29 0.20 0.40 614 2017 1 227.10 0.19 0.35 679 2017 2 226.68 0.20 0.34 622 2017 3 226.50 0.22 0.33 657 2017 4 226.48 0.24 0.36 464 2017 5 226.46 0.24 0.33 363 2017 6 226.60 0.26 0.34 337 2017 7 226.65 0.27 0.32 350 2017 8 226.82 0.29 0.32 326 2017 9 226.88 0.23 0.29 333 2017 10 226.84 0.24 0.25 264 2017 11 226.96 0.21 0.31 327 2017 12 226.39 0.23 0.34 285 2018 1 226.36 0.24 0.36 336 2018 2 226.30 0.22 0.33 67 2018 3 226.23 0.25 0.45 322 2018 4 226.34 0.22 0.39 325 2018 5 226.36 0.25 0.38 343 2018 6 226.29 0.26 0.39 312 2018 7 226.48 0.27 0.38 316 2018 8 226.49 0.26 0.36 341 2018 9 226.65 0.26 0.34 334 2018 10 226.43 0.32 0.38 331 2018 11 226.48 0.23 0.36 300 2018 12 226.40 0.26 0.37 334 2019 1 226.34 0.24 0.33 316 2019 2 226.02 0.26 0.45 288 2019 3 225.56 0.27 0.41 348 2019 4 225.30 0.28 0.47 304 2019 5 224.91 0.26 0.43 340 2019 6 225.35 0.30 0.43 331 2019 7 225.26 0.29 0.44 346 2019 8 225.41 0.29 0.42 337 2019 9 225.11 0.33 0.52 337 2019 10 224.67 0.36 0.43 361 2019 11 224.60 0.36 0.40 337 2019 12 224.36 0.33 0.44 352 2020 1 223.81 0.37 0.51 360 2020 2 223.53 0.45 0.47 666 2020 3 223.03 0.37 0.46 702 2020 4 222.71 0.41 0.47 715 2020 5 222.64 0.41 0.47 722 2020 6 222.77 0.48 0.50 705 2020 7 222.81 0.43 0.49 736 2020 8 222.82 0.43 0.47 706 2020 9 222.69 0.43 0.46 687 2020 10 222.59 0.40 0.43 711 2020 11 222.49 0.41 0.44 683 2020 12 222.33 0.35 0.44 672 2021 1 222.18 0.36 0.43 708 2021 2 222.33 0.42 0.48 633 2021 3 221.99 0.42 0.52 706 2021 4 221.67 0.42 0.48 680 2021 5 221.39 0.42 0.51 648 2021 6 221.60 0.48 0.55 669 2021 7 221.09 0.46 0.63 704 2021 8 220.60 0.42 0.52 686 2021 9 220.50 0.34 0.50 694 2021 10 220.18 0.35 0.47 725 2021 11 220.34 0.37 0.53 683 2021 12 220.14 0.37 0.45 697 2022 1 220.26 0.36 0.49 724 2022 2 220.00 0.40 0.48 642 2022 3 219.63 0.39 0.46 722 2022 4 219.23 0.39 0.45 694 2022 5 219.00 0.45 0.44 714 2022 6 218.88 0.45 0.45 704 2022 7 218.74 0.44 0.48 721 2022 8 218.65 0.45 0.46 702 2022 9 218.56 0.40 0.44 700 2022 10 218.35 0.43 0.44 724 2022 11 218.27 0.33 0.41 707 2022 12 218.23 0.30 0.39 618 2023 1 218.01 0.30 0.41 713 2023 2 217.67 0.42 0.49 629 2023 3 217.19 0.52 0.49 712 2023 4 216.91 0.33 0.43 286