# File: insitu_global_N2O.txt # Date: 2023-08-29 # # Data use policy see https://gml.noaa.gov/hats/hats_datause.html # # Nitrous Oxide (N2O) hemispheric and global monthly means from the NOAA/GML # Chromatograph for Atmospheric Trace Species (CATS) data from baseline observatories (Barrow, Alaska; # Summit, Greenland; Niwot Ridge, Colorado; Mauna Loa, Hawaii; American Samoa; South Pole). # This work was funded in part by the Atmospheric Chemistry Project of NOAA's Climate and # Global Change Program. # # Citation: # G.S. Dutton and B.D. Hall (2023), # Global Atmospheric Nitrous Oxide Hemispheric and Global Mean Dry Air Mole Fractions from the # NOAA GML Halocarbons in situ Network, 1998-2023, Version: 2023-08-29, # https://doi.org/10.7289/V5X0659V # # For contact information see https://gml.noaa.gov/about/stafflist.html # # Calibration scale used: NOAA 2006A # 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. Global monthly data are provided in parts-per-billion, ppb. # 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 insturmental precision and atmospheric variablity. # insitu_N2O_YYYY insitu_N2O_MM insitu_NH_N2O insitu_NH_N2O_sd insitu_SH_N2O insitu_SH_N2O_sd insitu_Global_N2O insitu_Global_N2O_sd 1998 1 nan nan nan nan nan nan 1998 2 nan nan nan nan nan nan 1998 3 nan nan nan nan nan nan 1998 4 nan nan nan nan nan nan 1998 5 nan nan nan nan nan nan 1998 6 nan nan nan nan nan nan 1998 7 nan nan nan nan nan nan 1998 8 nan nan nan nan nan nan 1998 9 nan nan nan nan nan nan 1998 10 nan nan nan nan nan nan 1998 11 nan nan nan nan nan nan 1998 12 nan nan 314.033 0.271 nan nan 1999 1 nan nan 314.182 0.216 nan nan 1999 2 nan nan 314.383 0.224 nan nan 1999 3 nan nan 314.186 0.218 nan nan 1999 4 nan nan 314.258 0.218 nan nan 1999 5 nan nan 314.379 0.256 nan nan 1999 6 nan nan 314.355 0.222 nan nan 1999 7 315.047 0.130 314.295 0.209 314.671 0.246 1999 8 314.962 0.117 314.307 0.214 314.635 0.244 1999 9 314.972 0.113 314.387 0.217 314.679 0.245 1999 10 315.103 0.102 314.476 0.241 314.790 0.262 1999 11 315.366 0.182 314.627 0.224 314.996 0.288 1999 12 315.484 0.122 314.819 0.236 315.151 0.266 2000 1 315.619 0.136 314.919 0.200 315.269 0.242 2000 2 315.771 0.131 315.003 0.224 315.387 0.260 2000 3 315.817 0.141 315.162 0.233 315.490 0.272 2000 4 315.783 0.141 315.249 0.238 315.516 0.277 2000 5 315.875 0.138 315.095 0.238 315.485 0.275 2000 6 316.065 0.135 315.015 0.213 315.540 0.252 2000 7 316.007 0.134 315.169 0.224 315.588 0.261 2000 8 316.064 0.141 315.390 0.215 315.727 0.257 2000 9 316.289 0.132 315.595 0.208 315.942 0.246 2000 10 316.600 0.126 315.713 0.236 316.156 0.267 2000 11 316.569 0.292 315.804 0.218 316.186 0.365 2000 12 316.610 0.349 315.927 0.222 316.268 0.414 2001 1 316.866 0.386 316.109 0.222 316.487 0.445 2001 2 316.831 0.402 316.147 0.411 316.489 0.575 2001 3 316.901 0.409 316.154 0.348 316.528 0.537 2001 4 316.769 0.364 315.967 0.265 316.368 0.450 2001 5 316.774 0.326 315.816 0.240 316.295 0.405 2001 6 316.937 0.388 315.918 0.316 316.428 0.500 2001 7 316.979 0.326 316.248 0.285 316.614 0.433 2001 8 316.975 0.441 316.365 0.284 316.670 0.525 2001 9 317.038 0.475 316.295 0.218 316.666 0.522 2001 10 317.255 0.482 316.403 0.221 316.829 0.530 2001 11 317.446 0.504 316.647 0.246 317.047 0.561 2001 12 317.591 0.457 316.862 0.268 317.227 0.529 2002 1 317.526 0.387 316.869 0.235 317.197 0.453 2002 2 317.560 0.392 316.930 0.241 317.245 0.460 2002 3 317.565 0.353 316.847 0.253 317.206 0.434 2002 4 317.664 0.411 316.715 0.269 317.189 0.491 2002 5 317.762 0.432 316.490 0.256 317.126 0.502 2002 6 317.956 0.200 316.414 0.294 317.185 0.356 2002 7 317.855 0.159 316.553 0.285 317.204 0.326 2002 8 317.844 0.135 316.747 0.451 317.296 0.470 2002 9 317.990 0.157 316.916 0.298 317.453 0.337 2002 10 318.105 0.285 316.837 0.263 317.471 0.388 2002 11 318.040 0.269 316.812 0.466 317.426 0.538 2002 12 318.093 0.223 317.125 0.302 317.609 0.375 2003 1 318.199 0.179 317.372 0.289 317.786 0.340 2003 2 318.284 0.180 317.350 0.312 317.817 0.360 2003 3 318.348 0.182 317.409 0.417 317.879 0.455 2003 4 318.411 0.188 317.554 0.418 317.982 0.458 2003 5 318.460 0.183 317.355 0.314 317.907 0.364 2003 6 318.574 0.323 317.314 0.284 317.944 0.430 2003 7 318.522 0.324 317.498 0.367 318.010 0.489 2003 8 318.414 0.289 317.763 0.403 318.089 0.496 2003 9 318.429 0.292 317.883 0.561 318.156 0.633 2003 10 318.591 0.254 317.927 0.350 318.259 0.432 2003 11 318.652 0.229 317.997 0.338 318.325 0.408 2003 12 318.706 0.234 318.077 0.251 318.391 0.343 2004 1 318.788 0.258 318.206 0.300 318.497 0.396 2004 2 318.769 0.251 318.276 0.345 318.522 0.427 2004 3 318.778 0.185 318.315 0.471 318.546 0.506 2004 4 318.830 0.195 318.174 0.453 318.502 0.493 2004 5 318.845 0.188 318.041 0.264 318.443 0.324 2004 6 318.799 0.335 317.896 0.234 318.347 0.409 2004 7 318.854 0.324 318.056 0.216 318.455 0.390 2004 8 318.908 0.301 318.236 0.443 318.572 0.536 2004 9 318.973 0.308 318.336 0.494 318.654 0.582 2004 10 319.214 0.285 318.379 0.491 318.797 0.567 2004 11 319.400 0.280 318.582 0.562 318.991 0.628 2004 12 319.447 0.266 318.798 0.440 319.123 0.514 2005 1 319.444 0.155 318.775 0.280 319.109 0.320 2005 2 319.544 0.163 318.723 0.283 319.134 0.326 2005 3 319.560 0.171 318.746 0.290 319.153 0.336 2005 4 319.572 0.178 318.605 0.286 319.089 0.336 2005 5 319.647 0.181 318.437 0.257 319.042 0.314 2005 6 319.598 0.163 318.346 0.235 318.972 0.286 2005 7 319.659 0.552 318.408 0.224 319.034 0.595 2005 8 319.546 0.451 318.701 0.192 319.123 0.490 2005 9 319.594 0.427 319.082 0.229 319.338 0.485 2005 10 319.713 0.183 319.312 0.237 319.513 0.299 2005 11 320.040 0.213 319.402 0.253 319.721 0.331 2005 12 320.108 0.202 319.564 0.244 319.836 0.317 2006 1 320.194 0.437 319.914 0.281 320.054 0.520 2006 2 320.115 0.410 320.317 0.228 320.216 0.469 2006 3 320.035 0.398 320.136 0.272 320.085 0.482 2006 4 320.099 0.412 319.954 0.235 320.026 0.474 2006 5 320.288 0.180 320.126 0.264 320.207 0.319 2006 6 320.427 0.156 320.253 0.245 320.340 0.291 2006 7 320.452 0.161 320.124 0.255 320.288 0.302 2006 8 320.449 0.187 320.111 0.238 320.280 0.303 2006 9 320.508 0.161 320.227 0.267 320.367 0.312 2006 10 320.620 0.159 320.211 0.365 320.415 0.398 2006 11 320.754 0.177 320.344 0.292 320.549 0.341 2006 12 320.856 0.183 320.381 0.322 320.618 0.371 2007 1 320.965 0.168 320.515 0.403 320.740 0.436 2007 2 320.979 0.169 320.666 0.368 320.823 0.405 2007 3 321.045 0.165 320.853 0.396 320.949 0.429 2007 4 321.114 0.171 320.804 0.368 320.959 0.406 2007 5 321.175 0.167 320.585 0.394 320.880 0.428 2007 6 321.201 0.169 320.307 0.436 320.754 0.468 2007 7 321.263 0.190 320.114 0.442 320.688 0.481 2007 8 321.305 0.190 320.313 0.512 320.809 0.546 2007 9 321.359 0.184 320.542 0.448 320.950 0.484 2007 10 321.505 0.171 320.862 0.425 321.184 0.458 2007 11 321.633 0.200 321.026 0.454 321.329 0.496 2007 12 321.764 0.193 321.227 0.426 321.496 0.467 2008 1 321.908 0.178 321.339 0.424 321.623 0.460 2008 2 322.009 0.175 321.396 0.373 321.703 0.412 2008 3 322.022 0.163 321.264 0.385 321.643 0.418 2008 4 322.020 0.185 321.184 0.425 321.602 0.464 2008 5 322.014 0.176 321.241 0.334 321.628 0.377 2008 6 322.044 0.180 321.297 0.347 321.670 0.391 2008 7 322.174 0.165 321.294 0.362 321.734 0.398 2008 8 322.235 0.177 321.360 0.356 321.797 0.398 2008 9 322.311 0.166 321.513 0.331 321.912 0.370 2008 10 322.429 0.171 321.768 0.284 322.099 0.331 2008 11 322.557 0.162 322.068 0.335 322.312 0.372 2008 12 322.614 0.187 322.293 0.372 322.454 0.417 2009 1 322.657 0.172 322.372 0.366 322.514 0.404 2009 2 322.625 0.163 322.463 0.372 322.544 0.406 2009 3 322.609 0.171 322.357 0.404 322.483 0.439 2009 4 322.681 0.178 322.184 0.449 322.432 0.483 2009 5 322.747 0.172 322.033 0.441 322.390 0.474 2009 6 322.788 0.158 322.032 0.388 322.410 0.419 2009 7 322.808 0.154 322.026 0.215 322.417 0.265 2009 8 322.879 0.144 322.130 0.213 322.505 0.257 2009 9 322.930 0.135 322.183 0.276 322.557 0.308 2009 10 323.039 0.156 322.244 0.322 322.641 0.358 2009 11 323.148 0.159 322.308 0.358 322.728 0.392 2009 12 323.329 0.172 322.519 0.335 322.924 0.377 2010 1 323.429 0.190 322.571 0.327 323.000 0.379 2010 2 323.519 0.225 322.525 0.285 323.022 0.363 2010 3 323.564 0.165 322.509 0.321 323.036 0.361 2010 4 323.603 0.182 322.666 0.393 323.134 0.433 2010 5 323.658 0.191 322.809 0.215 323.234 0.288 2010 6 323.713 0.133 322.833 0.369 323.273 0.392 2010 7 323.730 0.143 322.802 0.402 323.266 0.427 2010 8 323.694 0.144 322.957 0.361 323.326 0.389 2010 9 323.806 0.146 323.209 0.358 323.508 0.387 2010 10 323.972 0.152 323.341 0.216 323.656 0.264 2010 11 324.202 0.158 323.396 0.222 323.799 0.273 2010 12 324.318 0.163 323.564 0.223 323.941 0.276 2011 1 324.388 0.189 323.687 0.219 324.038 0.289 2011 2 324.401 0.179 323.786 0.329 324.093 0.375 2011 3 324.480 0.167 323.717 0.410 324.099 0.443 2011 4 324.535 0.173 323.602 0.345 324.069 0.386 2011 5 324.472 0.179 323.509 0.300 323.991 0.349 2011 6 324.451 0.154 323.569 0.219 324.010 0.268 2011 7 324.602 0.164 323.618 0.248 324.110 0.297 2011 8 324.767 0.157 323.912 0.307 324.340 0.345 2011 9 324.840 0.142 324.251 0.282 324.546 0.315 2011 10 324.956 0.157 324.456 0.286 324.706 0.326 2011 11 325.115 0.174 324.471 0.301 324.793 0.347 2011 12 325.268 0.169 324.551 0.307 324.909 0.351 2012 1 325.360 0.183 324.730 0.325 325.045 0.373 2012 2 325.367 0.166 324.852 0.308 325.110 0.350 2012 3 325.408 0.180 324.732 0.472 325.070 0.505 2012 4 325.475 0.172 324.561 0.461 325.018 0.492 2012 5 325.441 0.180 324.624 0.365 325.033 0.407 2012 6 325.392 0.226 324.646 0.587 325.019 0.629 2012 7 325.396 0.218 324.680 0.569 325.038 0.609 2012 8 325.433 0.225 324.828 0.575 325.131 0.617 2012 9 325.530 0.283 325.014 0.561 325.272 0.629 2012 10 325.705 0.317 325.118 0.498 325.411 0.590 2012 11 325.859 0.300 325.186 0.459 325.523 0.549 2012 12 325.972 0.261 325.281 0.498 325.627 0.562 2013 1 326.073 0.225 325.351 0.500 325.712 0.549 2013 2 326.116 0.223 325.407 0.508 325.762 0.555 2013 3 326.144 0.222 325.414 0.412 325.779 0.468 2013 4 326.252 0.223 325.442 0.403 325.847 0.460 2013 5 326.383 0.246 325.388 0.476 325.885 0.536 2013 6 326.449 0.145 325.358 0.463 325.903 0.486 2013 7 326.499 0.162 325.599 0.410 326.049 0.441 2013 8 326.578 0.139 325.894 0.339 326.236 0.367 2013 9 326.597 0.167 325.951 0.339 326.274 0.378 2013 10 326.616 0.173 325.841 0.363 326.229 0.402 2013 11 326.699 0.257 325.859 0.478 326.279 0.542 2013 12 326.866 0.244 325.964 0.475 326.415 0.534 2014 1 327.005 0.188 326.125 0.480 326.565 0.515 2014 2 327.130 0.137 326.341 0.519 326.736 0.537 2014 3 327.255 0.141 326.227 0.509 326.741 0.529 2014 4 327.475 0.147 325.845 0.444 326.660 0.467 2014 5 327.623 0.145 325.604 0.538 326.614 0.557 2014 6 327.795 0.142 326.072 0.652 326.933 0.667 2014 7 327.787 0.293 326.514 0.518 327.150 0.595 2014 8 327.819 0.280 326.679 0.533 327.249 0.602 2014 9 327.849 0.250 326.783 0.443 327.316 0.509 2014 10 327.940 0.319 327.143 0.366 327.542 0.486 2014 11 327.966 0.415 327.216 0.350 327.591 0.543 2014 12 328.075 0.324 327.309 0.334 327.692 0.465 2015 1 328.173 0.277 327.564 0.345 327.868 0.442 2015 2 328.220 0.216 327.724 0.303 327.972 0.372 2015 3 328.285 0.221 327.671 0.510 327.978 0.556 2015 4 328.380 0.177 327.573 0.464 327.976 0.497 2015 5 328.427 0.187 327.443 0.516 327.935 0.548 2015 6 328.423 0.153 327.414 0.590 327.918 0.610 2015 7 328.313 0.145 327.578 0.437 327.946 0.461 2015 8 328.417 0.256 327.741 0.370 328.079 0.449 2015 9 328.665 0.414 327.832 0.381 328.248 0.563 2015 10 328.919 0.381 327.970 0.400 328.445 0.552 2015 11 328.949 0.398 328.127 0.415 328.538 0.575 2015 12 328.974 0.287 328.249 0.384 328.612 0.480 2016 1 328.979 0.280 328.279 0.378 328.629 0.471 2016 2 329.062 0.252 328.301 0.440 328.682 0.506 2016 3 329.203 0.243 328.354 0.390 328.779 0.459 2016 4 329.306 0.275 328.184 1.002 328.745 1.040 2016 5 329.332 0.208 328.084 1.117 328.708 1.136 2016 6 329.353 0.227 328.014 1.214 328.683 1.235 2016 7 329.397 0.241 328.183 1.224 328.790 1.248 2016 8 329.408 0.285 328.388 0.226 328.898 0.364 2016 9 329.543 0.320 328.725 0.309 329.134 0.445 2016 10 329.786 0.389 328.812 0.355 329.299 0.527 2016 11 329.937 0.369 328.891 0.362 329.414 0.517 2016 12 329.964 0.278 328.924 0.336 329.444 0.436 2017 1 330.021 0.266 329.068 0.346 329.545 0.437 2017 2 330.132 0.284 329.128 0.350 329.630 0.451 2017 3 330.227 0.280 329.101 0.373 329.664 0.466 2017 4 330.293 0.315 329.098 0.365 329.695 0.483 2017 5 330.296 0.280 329.103 0.351 329.699 0.448 2017 6 330.320 0.289 329.175 0.339 329.747 0.446 2017 7 330.436 0.316 329.339 0.338 329.888 0.463 2017 8 330.566 0.271 329.569 0.369 330.068 0.457 2017 9 330.694 0.335 329.694 0.361 330.194 0.493 2017 10 330.905 0.420 329.940 0.373 330.422 0.561 2017 11 331.065 0.431 330.113 0.324 330.589 0.539 2017 12 331.019 0.375 330.204 0.216 330.611 0.433 2018 1 331.061 0.388 330.298 0.219 330.680 0.445 2018 2 331.095 0.370 330.404 0.229 330.750 0.435 2018 3 331.150 0.379 330.358 0.245 330.754 0.452 2018 4 331.332 0.393 330.255 0.236 330.794 0.459 2018 5 331.522 0.271 330.226 0.243 330.874 0.364 2018 6 331.491 0.356 330.259 0.242 330.875 0.431 2018 7 331.509 0.383 330.390 0.239 330.949 0.451 2018 8 331.643 0.346 330.598 0.246 331.121 0.425 2018 9 331.752 0.353 330.779 0.238 331.265 0.426 2018 10 331.818 0.314 330.923 0.260 331.371 0.408 2018 11 331.917 0.288 330.985 0.386 331.451 0.482 2018 12 331.976 0.310 331.248 0.403 331.612 0.508 2019 1 331.951 0.348 331.544 0.405 331.747 0.534 2019 2 332.052 0.361 331.695 0.421 331.874 0.554 2019 3 332.291 0.223 331.553 0.471 331.922 0.521 2019 4 332.480 0.257 331.457 0.498 331.969 0.560 2019 5 332.521 0.223 331.377 0.489 331.949 0.537 2019 6 332.560 0.266 331.315 0.458 331.937 0.529 2019 7 332.569 0.393 331.431 0.519 332.000 0.651 2019 8 332.634 0.404 331.626 0.498 332.130 0.641 2019 9 332.545 0.555 331.761 0.494 332.153 0.743 2019 10 332.574 0.441 331.764 0.457 332.169 0.635 2019 11 332.767 0.714 331.952 0.465 332.359 0.852 2019 12 332.990 0.979 332.095 0.477 332.543 1.089 2020 1 333.271 1.026 332.224 0.519 332.748 1.150 2020 2 333.574 0.875 332.312 0.498 332.943 1.006 2020 3 333.680 0.341 332.350 0.502 333.015 0.607 2020 4 333.735 0.396 332.354 0.492 333.045 0.632 2020 5 333.869 0.586 332.266 0.489 333.068 0.763 2020 6 333.921 0.491 332.272 0.498 333.096 0.700 2020 7 333.978 0.541 332.366 0.443 333.172 0.699 2020 8 334.134 0.523 332.660 0.427 333.397 0.675 2020 9 334.153 0.714 332.876 0.424 333.514 0.831 2020 10 334.099 0.848 333.222 0.479 333.661 0.974 2020 11 334.037 0.867 333.536 0.499 333.787 1.000 2020 12 334.109 0.997 333.762 0.499 333.935 1.115 2021 1 334.322 1.081 333.845 0.467 334.083 1.177 2021 2 334.564 1.030 334.172 0.492 334.368 1.142 2021 3 334.741 1.120 334.290 0.468 334.516 1.214 2021 4 334.923 1.023 334.104 0.292 334.514 1.064 2021 5 334.979 1.018 333.906 0.305 334.442 1.063 2021 6 334.987 0.341 334.006 0.297 334.497 0.452 2021 7 335.020 0.504 334.143 0.324 334.582 0.599 2021 8 334.996 0.436 334.343 0.370 334.669 0.572 2021 9 335.094 0.508 334.563 0.365 334.828 0.626 2021 10 335.319 0.323 334.743 0.372 335.031 0.493 2021 11 335.579 0.291 334.841 0.384 335.210 0.481 2021 12 335.513 0.310 334.846 0.322 335.180 0.447 2022 1 335.579 0.233 334.949 0.241 335.264 0.335 2022 2 335.788 0.229 335.097 0.271 335.442 0.355 2022 3 336.195 0.244 335.201 0.294 335.698 0.382 2022 4 336.406 0.225 335.175 0.527 335.791 0.573 2022 5 336.485 0.293 335.144 0.479 335.814 0.562 2022 6 336.616 0.379 335.071 0.452 335.844 0.590 2022 7 336.636 0.376 334.850 0.438 335.743 0.577 2022 8 336.498 0.443 334.710 0.618 335.604 0.760 2022 9 336.344 0.421 335.244 0.540 335.794 0.685 2022 10 336.509 0.464 335.644 0.415 336.077 0.623 2022 11 336.639 0.473 335.730 0.392 336.184 0.614 2022 12 335.882 0.222 nan nan nan nan 2023 1 335.916 0.220 nan nan nan nan 2023 2 335.977 0.279 nan nan nan nan 2023 3 336.054 0.274 nan nan nan nan 2023 4 nan nan nan nan nan nan 2023 5 nan nan nan nan nan nan 2023 6 nan nan nan nan nan nan 2023 7 nan nan nan nan nan nan 2023 8 nan nan nan nan nan nan 2023 9 nan nan nan nan nan nan 2023 10 nan nan nan nan nan nan 2023 11 nan nan nan nan nan nan 2023 12 nan nan nan nan nan nan