Periods (yr) of Spectral Maxima

1234567891011 12
Nino 3.4ONIAMO ulAMO NOAANAO wNAO moPDO yrSSN-GNSSN-GNSSN NASAAMMWHWP
1870-2023'50-'23/91856-'221854-'251854-'221950-'231854-'221610-20151700-20241749-20121948-2025/41948-2025/5
85.429.574.268.5764661.5116108.3105.462-6376, 63, 54
76.811.317.121.43824.639.854.151.858.62431.6
27.4 6.613.215.922.414.22728.540.542.61421.1
19.2 5.310.110.513.6 5.918.321.421.628.51114.1
16.6 4.7 9 9.1 7.8 3.611.314.813.121.18.810.9
12.8 4.2 6 7.3 5.8 2.5 9.911.811.914.8579
11.5 3.6 5.5 6.1 4.6 5.6111111.8468.1
10.7 3.1 2.7 4.2 3.7 4.410.510.610.8757.2
 9.9 2.9 3.6 3.2 9.91010.063.66.6
 9.1 2.4 2.2 2.8 8.49.38.113.15.8
 5.7 2.1 2.4 6.88.45.462.95.1
 5.2 1.88 2.3 4.48.14.812.54.7
 4.7 1.48 1.8 3.45.52.34.5
 4.2 1.74.82.14.2
 3.6 1.43.91.83.6
 2.91.52.9
 2.41.42.5
 1.52.3
 1.5
 1.4

References

Nino3.4: https://www.zafzaf.it/clima/pp04/nino34-long.png
ONI: https://www.zafzaf.it/clima/cm70/oni23bis.png see also: /cm70/oni25.png
AMO ul: https://www.zafzaf.it/clima/indici/amo-mo.png
AMO NOAA: https://www.zafzaf.it/clima/indici/amo-noaa25-mem.png
NAO DJFM: https://www.zafzaf.it/clima/previsioni/all-spettri.png (Winter)
NAO Monthly: https://www.zafzaf.it/clima/previsioni/nao-mo.png (not DJFM)
PDO: https://www.zafzaf.it/clima/previsioni/all-spettri.png
SSN-GN: https://www.zafzaf.it/clima/cmab/mem-svalg.png (1610-2015)
SSN-GN: https://www.zafzaf.it/clima/ssn25/v2y-mem.png (1700-2024)
SSN NASA: https://www.zafzaf.it/clima/spettri/power-ss-nasa-30.png (1749-2012)
AMM/WHWP: https://www.zafzaf.it/clima/pp75/pp75home.html (1948-2025)


This file is available at:
~/www/noaa/spectral.html (local)
~/www/noaa/pp33/spectral.html (local)
~/www/noaa/pp69/spectral.html (local)
https://www.zafzaf.it/clima/spectral.html (net)
https://www.zafzaf.it/clima/pp33/spectral.html (net)
https://www.zafzaf.it/clima/pp69/spectral.html (net)

Page written: 19.11.2023. Updated: 11.7.2025