NAO_INDEX (ERA5) ** undef = -9.99e+08 year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1940 -1.428 -0.885 -0.575 -0.136 -0.589 0.610 -0.663 1.802 -0.067 -0.450 -0.898 0.078 1941 -1.480 -0.485 -0.988 -0.817 -0.800 0.474 0.392 -0.579 -1.029 -0.734 -1.290 0.310 1942 0.019 -1.837 -1.234 -0.375 0.428 -0.402 -0.012 0.069 0.936 0.724 1.191 -0.321 1943 -0.575 1.132 0.287 2.020 0.696 -0.518 0.054 -1.061 -0.076 0.593 1.593 0.401 1944 0.868 -0.896 -0.658 0.204 -0.226 -0.351 -1.170 0.418 0.022 -0.400 0.098 0.527 1945 -1.151 1.301 -0.011 0.357 0.147 -0.443 -0.042 0.579 0.028 -0.898 0.507 -0.968 1946 0.202 -0.189 -0.722 1.964 -1.812 0.085 0.516 -0.851 -0.062 -1.259 -0.324 0.080 1947 -0.681 -1.738 -1.119 0.230 0.095 -1.079 0.020 2.076 1.074 0.024 -0.190 -0.609 1948 0.536 0.055 0.799 0.396 -0.038 -1.192 -0.166 -0.955 0.969 0.690 -0.489 -0.263 1949 1.064 1.218 0.006 1.400 0.328 -0.823 0.573 0.345 -1.006 0.634 -0.384 0.493 1950 -0.457 0.876 -0.207 0.211 -1.477 -0.439 -2.389 -1.484 1.327 0.596 -0.098 -0.312 1951 0.601 0.156 -0.869 0.199 -1.544 -1.435 0.928 -1.168 -0.936 0.432 -0.457 1.071 1952 0.834 -0.785 -1.345 -0.150 -1.265 -0.206 1.275 -0.195 -1.394 -0.210 0.973 -0.487 1953 -0.363 -0.303 0.330 -0.795 -0.720 0.288 -1.173 -0.940 -0.194 0.944 -0.077 0.605 1954 -0.363 0.098 -0.416 0.756 -1.162 -0.174 -0.248 -0.998 1.360 1.250 -0.776 0.936 1955 -0.603 -1.185 -1.427 0.488 0.841 -0.654 2.778 1.492 0.526 -1.006 0.476 -0.098 1956 -0.003 -1.525 -0.492 -0.082 1.180 0.808 -0.947 -1.368 -0.496 0.293 1.029 0.256 1957 0.732 -0.069 -1.130 1.052 -0.805 -1.544 -0.510 -0.015 -0.898 1.501 0.260 0.791 1958 0.128 -0.746 -1.648 0.473 0.775 -1.377 -1.793 -1.414 -0.795 0.581 0.493 -0.680 1959 -0.866 0.891 0.077 -0.942 -1.296 0.178 0.526 0.874 -0.259 0.267 -0.594 0.245 1960 -1.371 -1.122 -1.489 0.623 -0.250 0.119 -1.516 -0.718 -0.604 -1.991 -1.843 0.816 1961 0.141 1.016 0.738 -1.515 -0.643 1.691 -0.070 -0.621 0.501 -0.277 0.677 -1.391 1962 1.011 0.012 -2.130 0.253 -0.406 0.488 -0.667 -1.341 0.274 0.536 1.122 -0.235 1963 -2.134 -0.988 -0.794 -0.866 1.693 -0.591 -0.071 -0.896 1.076 1.442 -1.186 -1.110 1964 -0.976 -0.786 -1.419 -0.306 1.123 0.432 1.832 -0.195 0.505 -0.196 0.313 0.345 1965 -0.030 -2.391 -0.786 0.487 -0.671 0.160 -0.968 -0.879 -0.449 -0.010 -0.572 0.204 1966 -1.096 -0.669 0.437 -1.834 1.507 0.274 0.756 -0.574 0.444 -1.400 1.640 1.071 1967 -1.160 0.729 1.596 2.239 0.553 1.401 -0.029 -0.416 -0.588 1.391 1.010 0.050 1968 0.318 -0.819 0.936 -1.036 -0.583 -0.167 -0.326 0.440 -1.388 -0.103 -1.224 -0.635 1969 -1.321 -1.514 -1.306 0.083 -0.114 0.278 0.838 0.750 1.398 1.451 0.700 0.418 1970 -1.361 0.111 -0.787 -0.464 0.448 1.120 -0.390 0.536 0.519 -0.249 -0.219 -0.579 1971 -0.312 0.222 -0.550 0.068 0.358 -1.474 0.472 -0.274 0.042 1.300 1.889 0.746 1972 -0.407 -0.192 -0.034 0.293 0.829 0.829 0.936 0.772 -1.414 -0.727 -0.017 0.278 1973 -0.315 0.850 0.321 0.369 0.614 1.109 0.383 -0.124 -0.301 -0.388 1.133 0.753 1974 0.695 0.255 -0.815 0.329 0.111 -0.366 -0.506 -1.402 0.893 -1.932 -0.723 1.438 1975 1.234 -0.110 -0.504 0.656 -1.524 0.549 0.719 0.793 1.663 -0.256 0.426 1.087 1976 0.610 0.747 0.521 1.352 1.377 0.490 0.312 2.200 -2.273 0.085 -0.346 -1.130 1977 -0.841 -0.343 -0.531 0.281 -1.122 0.218 0.334 -0.349 0.659 0.507 0.027 -0.563 1978 0.949 -1.105 0.690 -1.112 -0.174 1.175 -0.946 0.627 0.911 0.460 -0.060 -2.411 1979 -0.809 -0.418 0.198 -0.547 1.407 1.050 0.461 -0.771 1.354 -0.126 -0.018 0.457 1980 -1.104 0.150 -0.708 1.700 -1.523 -0.298 -1.066 -0.273 0.858 -0.179 -0.029 1.052 1981 0.675 0.398 -0.853 1.233 0.848 -0.088 0.542 1.617 -0.831 -0.361 0.597 -0.846 1982 -0.567 0.682 0.693 1.769 0.772 -1.887 1.626 -0.822 2.060 0.446 -0.852 1.188 1983 1.888 -1.055 0.963 -1.202 0.572 1.309 2.204 1.974 0.083 1.110 0.346 0.263 1984 1.887 0.502 -0.900 0.893 -0.466 0.185 0.196 1.311 -0.401 1.222 -1.780 0.521 1985 -1.464 -0.501 -0.187 -0.243 -0.765 -0.685 -0.540 -2.019 0.750 0.840 -0.499 -0.665 1986 0.830 -1.686 1.464 -0.918 1.847 1.004 0.589 -0.561 -0.259 2.355 -0.991 0.672 1987 -1.401 -0.331 -0.033 0.599 -1.439 -1.690 0.912 0.552 0.897 0.102 0.457 -0.907 1988 0.809 -0.148 0.116 -0.005 0.170 1.885 -1.964 -1.343 0.491 -0.561 0.408 1.166 1989 1.171 1.965 1.406 -1.302 0.360 0.314 2.197 -0.712 1.130 0.714 0.077 -1.187 1990 1.087 2.103 1.855 1.484 -1.739 -0.575 0.032 0.378 0.338 0.243 0.267 0.909 1991 0.342 -0.050 -0.638 0.622 -1.871 -1.263 -0.277 0.385 0.207 -0.785 -0.068 1.056 1992 -0.406 1.260 1.136 -0.253 0.671 0.903 0.012 -2.536 -0.281 -2.172 -1.233 0.872 1993 1.903 0.043 0.693 -0.329 -0.791 -0.963 -1.324 0.453 -1.731 -2.011 -0.846 1.054 1994 1.135 -0.127 2.189 -0.600 0.276 1.290 0.220 -0.270 -0.296 -0.117 -0.755 0.864 1995 1.154 1.447 1.195 0.569 -0.472 0.480 -0.006 2.041 -0.733 0.880 0.476 -1.195 1996 -1.333 -0.241 -1.424 -0.894 -0.134 0.377 1.283 0.231 -1.211 0.740 0.411 -1.212 1997 -0.840 2.101 0.956 1.540 -0.700 -1.526 0.363 0.250 0.452 -0.975 -1.508 -0.689 1998 -0.498 0.853 0.935 -2.359 -1.223 -1.652 -0.737 0.422 -1.785 0.598 -0.220 0.258 1999 0.651 0.495 -0.353 -0.361 0.485 1.013 0.338 -0.002 -0.034 0.141 1.054 0.834 2000 0.107 1.645 0.422 -1.423 0.575 -0.109 -0.024 0.338 -0.382 0.940 -0.848 -1.544 2001 -0.247 -0.138 -1.023 -0.151 -1.049 -0.816 -0.008 -0.818 -1.526 0.172 1.830 -0.851 2002 0.311 1.347 0.225 0.086 0.396 -0.709 0.129 0.992 -2.072 -0.707 -1.701 -1.160 2003 0.069 0.357 0.074 -0.139 1.271 -1.227 -0.542 1.211 0.141 -1.814 -1.071 0.475 2004 -0.121 -0.650 -0.046 -0.170 -0.483 -0.913 -0.532 -0.420 0.510 -1.471 1.702 1.731 2005 0.499 -1.403 -1.908 -0.594 -0.055 -0.725 0.384 0.168 1.159 0.469 0.721 -0.002 2006 0.048 -0.915 -1.326 0.689 0.602 1.575 0.754 1.015 -0.676 -0.788 -0.436 0.514 2007 0.811 -0.222 0.850 1.739 1.453 -1.612 -1.970 0.774 0.484 0.836 1.830 0.609 2008 1.015 0.859 0.336 -1.435 -1.300 -1.207 -1.092 -1.138 -0.412 0.980 1.590 0.483 2009 0.282 -0.541 0.544 -0.282 1.242 -0.892 -3.035 -1.331 1.212 0.063 -1.524 -2.065 2010 -1.520 -1.686 -0.947 0.384 -2.065 -0.283 -0.219 0.572 -1.362 -0.425 -0.133 -1.807 2011 -0.807 0.811 0.642 1.824 1.137 -1.416 -0.720 -0.786 0.866 1.129 -1.201 1.868 2012 0.526 -0.017 0.276 -0.588 -0.789 -2.590 -0.890 -0.622 0.744 -1.459 -0.259 -0.714 2013 -0.171 -0.764 -2.323 -0.358 0.497 0.562 1.013 0.261 -0.190 -0.053 1.180 0.701 2014 0.205 0.721 0.728 0.285 -0.052 -0.930 0.186 -0.914 -0.135 0.199 -1.039 1.414 2015 1.502 0.883 1.361 1.080 1.888 -0.282 -2.542 -1.002 -1.328 0.195 -0.160 0.487 2016 0.143 0.764 -0.030 -1.146 -0.320 -0.707 -0.873 0.091 0.831 -0.806 1.146 0.541 2017 -0.128 0.173 0.362 1.574 -1.187 -0.372 -0.244 -0.374 -0.899 0.238 0.969 0.541 2018 0.978 0.140 -1.201 -1.007 1.085 1.079 1.232 0.005 1.324 0.872 -1.637 -0.198 2019 -0.019 0.373 1.602 -1.126 -1.266 -1.560 -1.035 -0.997 -0.212 -0.527 -0.468 0.032 2020 1.274 2.221 1.051 0.455 -0.388 -0.010 -0.324 -0.024 1.456 -1.095 0.193 -0.267 2021 -0.995 -0.168 0.409 0.435 0.823 1.004 0.272 1.171 0.082 0.051 1.692 -0.608 2022 0.546 1.761 -0.003 -0.249 0.383 0.201 1.259 1.055 -2.328 0.262 -2.073 -1.335 2023 0.644 0.445 -0.826 -1.029 -0.799 -0.116 -1.974 0.228 0.295 -0.320 -0.589 0.365 2024************************************************************************************