This file contains the monthly mean baseline (background) nitrous oxide (N2O) concentration measured at the Cape Grim Baseline Air Pollution Station (CGBAPS), located near the north-west tip of Tasmania, Australia. CGBAPS is funded and managed by the Australian Bureau of Meteorology, and the scientific program is jointly supervised with CSIRO Oceans & Atmosphere. Please acknowledge these two institutions if these data are used in publications or presentations. For more information on Cape Grim please see: http://www.csiro.au/greenhouse-gases/ https://www.csiro.au/en/Research/OandA/Areas/Assessing-our-climate/Greenhouse-gas-data http://www.bom.gov.au/inside/cgbaps/ The N2O units are parts per billion in dry air (ppb). The most recent year of data is provided in this file on a provisional basis only. These data may be subject to further revision. CSIRO & the Bureau make every effort to produce the most accurate and precise measurements possible. However, they reserve the right to make corrections to the data based on recalibration of standard gases or for other reasons deemed scientifically justified. Please see the full terms & conditions at the end of this file. Release Date: May 2017 YYYY MM DD DATE N2O(ppb) SD(ppb) Source 1978 04 26 1978.3178 299.19 0.23 Cape Grim air archive 1978 07 07 1978.5151 299.55 0.19 Cape Grim air archive 1980 09 03 1980.6749 301.66 0.07 Cape Grim air archive 1981 10 05 1981.7616 301.84 0.11 Cape Grim air archive 1984 05 23 1984.3934 302.98 0.11 Cape Grim air archive 1986 02 06 1986.1014 304.51 0.09 Cape Grim air archive 1986 11 12 1986.8658 304.41 0.11 Cape Grim air archive 1987 01 08 1987.0219 304.95 0.12 Cape Grim air archive 1987 05 28 1987.4055 305.32 0.08 Cape Grim air archive 1988 06 21 1988.4727 305.65 0.06 Cape Grim air archive 1989 05 19 1989.3808 307.06 0.04 Cape Grim air archive 1989 11 08 1989.8548 307.49 0.08 Cape Grim air archive 1990 02 16 1990.1288 307.65 0.12 Cape Grim air archive 1990 04 26 1990.3178 307.57 0.30 Cape Grim air archive 1990 05 25 1990.3973 307.78 0.06 Cape Grim air archive 1990 11 13 1990.8685 308.27 0.16 Cape Grim air archive 1990 12 18 1990.9644 308.26 0.13 Cape Grim air archive 1991 06 19 1991.4658 308.67 0.04 Cape Grim air archive 1992 01 16 1992.0437 309.44 0.07 Cape Grim air archive 1992 02 12 1992.1175 309.29 0.06 Cape Grim air archive 1992 03 18 1992.2131 309.07 0.09 Cape Grim air archive 1992 04 08 1992.2705 309.07 0.10 Cape Grim air archive 1992 08 15 1992.6202 309.13 0.35 flask 1992 09 15 1992.7049 309.32 0.29 flask 1992 10 15 1992.7869 309.41 0.29 flask 1992 11 15 1992.8716 309.44 0.32 flask 1992 12 15 1992.9536 309.48 0.10 flask 1993 01 15 1993.0384 309.36 0.23 flask 1993 02 15 1993.1233 309.15 0.46 flask 1993 03 15 1993.2000 308.89 0.27 flask 1993 04 15 1993.2849 308.85 0.32 flask 1993 05 15 1993.3671 309.01 0.17 flask 1993 06 15 1993.4521 309.04 0.25 flask 1993 07 15 1993.5342 309.14 0.41 flask 1993 08 15 1993.6192 309.39 0.34 flask 1993 09 15 1993.7041 309.49 0.08 flask 1993 10 15 1993.7863 309.64 0.26 flask 1993 11 15 1993.8712 309.65 0.42 flask 1993 12 15 1993.9534 309.47 0.05 flask 1994 01 15 1994.0384 309.35 0.03 flask 1994 02 15 1994.1233 309.35 0.05 flask 1994 03 15 1994.2000 309.63 0.17 flask 1994 04 15 1994.2849 309.68 0.40 flask 1994 05 15 1994.3671 309.73 0.32 flask 1994 06 15 1994.4521 310.03 0.33 flask 1994 07 15 1994.5342 310.10 0.23 flask 1994 08 15 1994.6192 310.22 0.33 flask 1994 09 15 1994.7041 310.28 0.33 flask 1994 10 15 1994.7863 310.13 0.31 flask 1994 11 15 1994.8712 310.15 0.33 flask 1994 12 15 1994.9534 310.38 0.28 flask 1995 01 15 1995.0384 310.48 0.33 flask 1995 02 15 1995.1233 310.27 0.22 flask 1995 03 15 1995.2000 309.99 0.33 flask 1995 04 15 1995.2849 309.94 0.31 flask 1995 05 15 1995.3671 310.14 0.34 flask 1995 06 15 1995.4521 310.23 0.27 flask 1995 07 15 1995.5342 310.16 0.35 flask 1995 08 15 1995.6192 310.49 0.30 flask 1995 09 15 1995.7041 310.89 0.23 flask 1995 10 15 1995.7863 310.92 0.22 flask 1995 11 15 1995.8712 310.98 0.24 flask 1995 12 15 1995.9534 311.19 0.26 flask 1996 01 15 1996.0383 311.16 0.25 flask 1996 02 15 1996.1230 310.94 0.28 flask 1996 03 15 1996.2022 310.89 0.18 flask 1996 04 15 1996.2869 310.78 0.29 flask 1996 05 15 1996.3689 310.70 0.28 flask 1996 06 15 1996.4536 310.79 0.32 flask 1996 07 15 1996.5355 310.98 0.31 flask 1996 08 15 1996.6202 311.25 0.31 flask 1996 09 15 1996.7049 311.38 0.37 flask 1996 10 15 1996.7869 311.46 0.26 flask 1996 11 15 1996.8716 311.53 0.20 flask 1996 12 15 1996.9536 311.74 0.20 flask 1997 01 15 1997.0384 311.92 0.14 flask 1997 02 15 1997.1233 311.88 0.24 flask 1997 03 15 1997.2000 311.88 0.37 flask 1997 04 15 1997.2849 311.70 0.29 flask 1997 05 15 1997.3671 311.68 0.31 flask 1997 06 15 1997.4521 311.91 0.32 flask 1997 07 15 1997.5342 311.89 0.34 flask 1997 08 15 1997.6192 312.12 0.25 flask 1997 09 15 1997.7041 312.52 0.23 flask 1997 10 15 1997.7863 312.69 0.33 flask 1997 11 15 1997.8712 312.79 0.13 flask 1997 12 15 1997.9534 312.86 0.26 flask 1998 01 15 1998.0384 312.86 0.29 flask 1998 02 15 1998.1233 312.75 0.24 flask 1998 03 15 1998.2000 312.55 0.22 flask 1998 04 15 1998.2849 312.46 0.25 flask 1998 05 15 1998.3671 312.50 0.29 flask 1998 06 15 1998.4521 312.61 0.37 flask 1998 07 15 1998.5342 312.92 0.23 flask 1998 08 15 1998.6192 313.25 0.21 flask 1998 09 15 1998.7041 313.40 0.41 flask 1998 10 15 1998.7863 313.45 0.31 flask 1998 11 15 1998.8712 313.55 0.27 flask 1998 12 15 1998.9534 313.73 0.16 flask 1999 01 15 1999.0384 313.79 0.33 flask 1999 02 15 1999.1233 313.77 0.25 flask 1999 03 15 1999.2000 313.81 0.33 flask 1999 04 15 1999.2849 313.70 0.21 flask 1999 05 15 1999.3671 313.56 0.27 flask 1999 06 15 1999.4521 313.61 0.26 flask 1999 07 15 1999.5342 313.76 0.14 flask 1999 08 15 1999.6192 313.95 0.23 flask 1999 09 15 1999.7041 314.20 0.33 flask 1999 10 15 1999.7863 314.33 0.19 flask 1999 11 15 1999.8712 314.34 0.25 flask 1999 12 15 1999.9534 314.53 0.23 flask 2000 01 15 2000.0383 314.72 0.23 flask 2000 02 15 2000.1230 314.63 0.27 flask 2000 03 15 2000.2022 314.51 0.28 flask 2000 04 15 2000.2869 314.43 0.59 flask 2000 05 15 2000.3689 314.53 0.37 flask 2000 06 15 2000.4536 314.71 0.09 flask 2000 07 15 2000.5355 314.65 0.38 flask 2000 08 15 2000.6202 314.71 0.16 flask 2000 09 15 2000.7049 314.96 0.30 flask 2000 10 15 2000.7869 315.11 0.28 flask 2000 11 15 2000.8716 315.25 0.19 flask 2000 12 15 2000.9536 315.36 0.14 flask 2001 01 15 2001.0384 315.27 0.23 flask 2001 02 15 2001.1233 315.10 0.11 flask 2001 03 15 2001.2000 314.90 0.27 flask 2001 04 15 2001.2849 314.73 0.23 flask 2001 05 15 2001.3671 314.88 0.11 flask 2001 06 15 2001.4521 315.14 0.24 flask 2001 07 15 2001.5342 315.26 0.17 flask 2001 08 15 2001.6192 315.41 0.26 flask 2001 09 15 2001.7041 315.69 0.24 flask 2001 10 15 2001.7863 315.82 0.20 flask 2001 11 15 2001.8712 315.85 0.14 flask 2001 12 15 2001.9534 315.98 0.17 flask 2002 01 15 2002.0384 316.06 0.16 flask 2002 02 15 2002.1233 316.07 0.34 flask 2002 03 15 2002.2000 315.91 0.20 flask 2002 04 15 2002.2849 315.77 0.19 flask 2002 05 15 2002.3671 315.81 0.23 flask 2002 06 15 2002.4521 316.03 0.40 flask 2002 07 15 2002.5342 316.20 0.38 flask 2002 08 15 2002.6192 316.21 0.14 flask 2002 09 15 2002.7041 316.15 0.13 flask 2002 10 15 2002.7863 316.18 0.21 flask 2002 11 15 2002.8712 316.21 0.18 flask 2002 12 15 2002.9534 316.16 0.27 flask 2003 01 15 2003.0384 316.29 0.15 flask 2003 02 15 2003.1233 316.33 0.37 flask 2003 03 15 2003.2000 316.19 0.20 flask 2003 04 15 2003.2849 316.23 0.25 flask 2003 05 15 2003.3671 316.45 0.26 flask 2003 06 15 2003.4521 316.51 0.30 flask 2003 07 15 2003.5342 316.49 0.01 flask 2003 08 15 2003.6192 316.49 0.52 flask 2003 09 15 2003.7041 316.64 0.44 flask 2003 10 15 2003.7863 316.82 0.37 flask 2003 11 15 2003.8712 316.99 0.17 flask 2003 12 15 2003.9534 317.39 0.32 flask 2004 01 15 2004.0383 317.49 0.33 flask 2004 02 15 2004.1230 317.22 0.21 flask 2004 03 15 2004.2022 317.10 0.15 flask 2004 04 15 2004.2869 317.00 0.12 flask 2004 05 15 2004.3689 316.99 0.09 flask 2004 06 15 2004.4536 317.07 0.28 flask 2004 07 15 2004.5355 317.20 0.13 flask 2004 08 15 2004.6202 317.59 0.22 flask 2004 09 15 2004.7049 317.74 0.20 flask 2004 10 15 2004.7869 317.64 0.12 flask 2004 11 15 2004.8716 317.68 0.18 flask 2004 12 15 2004.9536 317.72 0.48 flask 2005 01 15 2005.0384 317.96 0.49 flask 2005 02 15 2005.1233 317.97 0.13 flask 2005 03 15 2005.2000 317.49 0.29 flask 2005 04 15 2005.2849 317.27 0.43 flask 2005 05 15 2005.3671 317.64 0.19 flask 2005 06 15 2005.4521 318.02 0.27 flask 2005 07 15 2005.5342 317.93 0.29 flask 2005 08 15 2005.6192 318.05 0.33 flask 2005 09 15 2005.7041 318.32 0.33 flask 2005 10 15 2005.7863 318.47 0.47 flask 2005 11 15 2005.8712 318.82 0.09 flask 2005 12 15 2005.9534 318.77 0.43 flask 2006 01 15 2006.0384 318.53 0.05 flask 2006 02 15 2006.1233 318.59 0.51 flask 2006 03 15 2006.2000 318.59 0.31 flask 2006 04 15 2006.2849 318.46 0.30 flask 2006 05 15 2006.3671 318.46 0.15 flask 2006 06 15 2006.4521 318.60 0.05 flask 2006 07 15 2006.5342 318.70 0.06 flask 2006 08 15 2006.6192 318.99 0.20 flask 2006 09 15 2006.7041 319.25 0.03 flask 2006 10 15 2006.7863 319.22 0.23 flask 2006 11 15 2006.8712 319.35 0.24 flask 2006 12 15 2006.9534 319.49 0.12 flask 2007 01 15 2007.0384 319.37 0.34 flask 2007 02 15 2007.1233 319.29 0.01 flask 2007 03 15 2007.2000 319.29 0.20 flask 2007 04 15 2007.2849 319.13 0.09 flask 2007 05 15 2007.3671 318.87 0.27 flask 2007 06 15 2007.4521 318.99 0.18 flask 2007 07 15 2007.5342 319.27 0.07 flask 2007 08 15 2007.6192 319.53 0.14 flask 2007 09 15 2007.7041 319.82 0.08 flask 2007 10 15 2007.7863 319.94 0.31 flask 2007 11 15 2007.8712 320.21 0.25 flask 2007 12 15 2007.9534 320.22 0.11 flask 2008 01 15 2008.0383 320.01 0.10 flask 2008 02 15 2008.1230 320.45 0.37 flask 2008 03 15 2008.2022 320.76 0.03 flask 2008 04 15 2008.2869 320.54 0.40 flask 2008 05 15 2008.3689 320.45 0.11 flask 2008 06 15 2008.4536 320.49 0.68 flask 2008 07 15 2008.5355 320.63 0.14 flask 2008 08 15 2008.6202 320.82 0.15 flask 2008 09 15 2008.7049 320.91 0.34 flask 2008 10 15 2008.7869 321.07 0.09 flask 2008 11 15 2008.8716 321.39 0.11 flask 2008 12 15 2008.9536 321.37 0.38 flask 2009 01 15 2009.0384 321.26 0.05 flask 2009 02 15 2009.1233 321.47 0.04 flask 2009 03 15 2009.2000 321.23 0.18 flask 2009 04 15 2009.2849 320.77 0.16 flask 2009 05 15 2009.3671 320.85 0.33 flask 2009 06 15 2009.4521 321.10 0.19 flask 2009 07 15 2009.5342 321.25 0.42 flask 2009 08 15 2009.6192 321.46 0.19 flask 2009 09 15 2009.7041 321.52 0.13 flask 2009 10 15 2009.7863 321.74 0.12 flask 2009 11 15 2009.8712 322.10 0.27 flask 2009 12 15 2009.9534 322.09 0.16 flask 2010 01 15 2010.0384 322.19 0.07 flask 2010 02 15 2010.1233 322.32 0.02 flask 2010 03 15 2010.2000 322.09 0.11 flask 2010 04 15 2010.2849 321.73 0.09 flask 2010 05 15 2010.3671 321.62 0.05 flask 2010 06 15 2010.4521 322.03 0.21 flask 2010 07 15 2010.5342 322.41 0.06 flask 2010 08 15 2010.6192 322.43 0.11 flask 2010 09 15 2010.7041 322.65 0.09 flask 2010 10 15 2010.7863 322.91 0.06 flask 2010 11 15 2010.8712 323.15 0.10 flask 2010 12 15 2010.9534 323.44 0.05 flask 2011 01 15 2011.0384 323.27 0.11 flask 2011 02 15 2011.1233 322.99 0.04 flask 2011 03 15 2011.2000 323.02 0.03 flask 2011 04 15 2011.2849 323.07 0.01 flask 2011 05 15 2011.3671 323.02 0.01 flask 2011 06 15 2011.4521 322.99 0.13 flask 2011 07 15 2011.5342 322.90 0.30 flask 2011 08 15 2011.6192 323.08 0.11 flask 2011 09 15 2011.7041 323.43 0.31 flask 2011 10 15 2011.7863 323.59 0.04 flask 2011 11 15 2011.8712 323.75 0.10 flask 2011 12 15 2011.9534 323.88 0.06 flask 2012 01 15 2012.0383 324.15 0.15 flask 2012 02 15 2012.1230 324.09 0.11 flask 2012 03 15 2012.2022 323.67 0.33 flask 2012 04 15 2012.2869 323.73 0.10 flask 2012 05 15 2012.3689 324.06 0.06 flask 2012 06 15 2012.4536 324.05 0.42 flask 2012 07 15 2012.5355 324.02 0.17 flask 2012 08 15 2012.6202 324.37 0.17 flask 2012 09 15 2012.7049 324.63 0.20 flask 2012 10 15 2012.7869 324.72 0.08 flask 2012 11 15 2012.8716 324.98 0.16 flask 2012 12 15 2012.9536 325.02 0.20 flask 2013 01 15 2013.0384 324.85 0.47 flask 2013 02 15 2013.1233 324.80 0.19 flask 2013 03 15 2013.2000 324.74 0.02 flask 2013 04 15 2013.2849 324.71 0.33 flask 2013 05 15 2013.3671 324.65 0.09 flask 2013 06 15 2013.4521 324.86 0.13 flask 2013 07 15 2013.5342 325.27 0.07 flask 2013 08 15 2013.6192 325.30 0.26 flask 2013 09 15 2013.7041 325.44 0.16 flask 2013 10 15 2013.7863 325.60 0.48 flask 2013 11 15 2013.8712 325.51 0.21 flask 2013 12 15 2013.9534 325.35 0.46 flask 2014 01 15 2014.0384 325.33 0.11 flask 2014 02 15 2014.1233 325.53 0.06 flask 2014 03 15 2014.2000 325.50 0.20 flask 2014 04 15 2014.2849 325.37 0.16 flask 2014 05 15 2014.3671 325.51 0.28 flask 2014 06 15 2014.4521 325.83 0.25 flask 2014 07 15 2014.5342 326.04 0.04 flask 2014 08 15 2014.6192 326.19 0.31 flask 2014 09 15 2014.7041 326.39 0.16 flask 2014 10 15 2014.7863 326.57 0.17 flask 2014 11 15 2014.8712 326.83 0.21 flask 2014 12 15 2014.9534 326.86 0.32 flask 2015 01 15 2015.0384 326.89 0.27 flask 2015 02 15 2015.1233 327.00 0.17 flask 2015 03 15 2015.2000 326.74 0.33 flask 2015 04 15 2015.2849 326.65 0.30 flask 2015 05 15 2015.3671 326.91 0.21 flask 2015 06 15 2015.4521 326.99 0.16 flask 2015 07 15 2015.5342 327.13 0.18 flask 2015 08 15 2015.6192 327.35 0.26 flask 2015 09 15 2015.7041 327.40 0.13 flask 2015 10 15 2015.7863 327.37 0.15 flask 2015 11 15 2015.8712 327.48 0.18 flask 2015 12 15 2015.9534 327.67 0.24 flask 2016 01 15 2016.0383 327.71 0.22 flask 2016 02 15 2016.1230 327.62 0.17 flask 2016 03 15 2016.2022 327.55 0.19 flask 2016 04 15 2016.2869 327.46 0.19 flask 2016 05 15 2016.3689 327.46 0.31 flask 2016 06 15 2016.4536 327.64 0.24 flask 2016 07 15 2016.5355 327.73 0.20 flask 2016 08 15 2016.6202 327.86 0.19 flask 2016 09 15 2016.7049 328.16 0.39 flask 2016 10 15 2016.7869 328.19 0.22 flask 2016 11 15 2016.8716 328.07 0.29 flask 2016 12 15 2016.9536 328.14 0.18 flask 2017 01 15 2017.0384 328.20 0.20 flask 2017 02 15 2017.1233 328.12 0.43 flask 2017 03 15 2017.2000 328.14 0.30 flask Terms of Use 1. 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