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Two Climatic Oscillations
AMM (Atlantic Meridional Mode) & WHWP ([Tropical] Western Hemisphere Warm Pool)

  • Xia et al., 2023. Fannyu Xia, Jinqing Zuo, Chenghu Sun and Ao Liu: The Atlantic Meridional Mode and Associated Wind–SST Relationship in the CMIP6 Models, Atmosphere, 14, 359, 2023. doi:10.3390/atmos14020359
  • Wang & Enfield, 2011. Chunzai Wang, David B. Enfield: A Further Study of the Tropical Western Hemisphere Warm Pool , Journal of Climate, 16.10, 1476-1493, 2003.
    https://doi.org/10.1175/1520-0442(2003)016<1476:AFSOTT>2.0.CO;2
  • See also: https://wattsupwiththat.com/2025/07/03/climate-oscillations-6-atlantic-meridional-mode-amm/ (Andy May)
    Plotsreadme.txt
    AMM map(png)Xia 2023 figure 1
    WHWPA monthly maps(png)Wang-Enfield 2011 figure 1
    AMM(pdf) (png)
    AMM-SST(pdf) (png)AMM & NOAA SST, also CCF
    AMM Spectra(pdf) (png)Comp. MEM & LOMB Spectra
    AMM mo Spectra(pdf) (png)(cap). Comp. MEM & LOMB Monthly
    AMM JAA(pdf) (png)Comp. Jan,Apr,Aug (cyan,green,red)
    AMM FJO(pdf) (png)Comp. Feb,Jun,Oct (cyan,red,brown)
    AMM MJN(pdf) (png)Comp. Mar,Jul,Nov (green,red,brown)
    AMM MSD(pdf) (png)Comp. May,Sep,Dec (green,brown,cyan)
    AMM Seasons(pdf) (png)Average values
    ------
    WHWPA(pdf) (png)month & year
    WHWPA-LOMB(pdf) (png)
    WHWPA JAA(pdf) (png)Comp. Jan,Apr,Aug (cyan,green,red)
    WHWPA FJO(pdf) (png)Comp. Feb,Jun,Oct (cyan,red,brown)
    WHWPA MJN(pdf) (png)Comp. Mar,Jul,Nov (green,red,brown)
    WHWPA MSD(pdf) (png)Comp. May,Sep,Dec (green,brown,cyan)<
    WHWPA Seasons(pdf) (png)Average values
    WHWPA mo-by-mo(pdf) (png)only some years, all months
    ================================
    Data
    AMM original(dat)
    AMM monthly(txt)used here
    AMM yearly(txt)used here
    NOAA SST(txt)
    NOAA-SST CCF(out)Cross-Correlation function
    AMM year MEM(out)
    AMM year LOMB(out)
    AMM month MEM(out)
    AMM month LOMB(out)
    ------
    WHWPa original(data)
    WHWPa monthly(txt)Used for Lomb spectrum
    WHWPa-mo det(txt)Detrended
    WHWPa-mo LOMB(out)Lomb spectrum
    WHWPa yearly(txt)

    Code

    amm.bon, amm-sp2.bon, amm-mo-sp2.bon, amm-sst.bon, amm-jaa.bon, amm-fjo.bon, amm-mjn.bon, amm-msd.bon,
    whwp.bon, whwpa-lomb.bon, whwpa-jaa.bon, whwpa-fjo.bon, whwpa-mjn.bon, whwpa-msd.bon,
    date12.f, date12a.f, ldate12, ldate12a, detrend.bmr, det-whwp.bmr,


    Page Written: July 6, 2025        Last Updated: