Hadley sûn-khoân

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Hadley sûn-khoân kā jia̍t-lêng kap chúi-khì ùi chhiah-tō sàng kaù lâm-pak tiong-hūi-tō͘ ê só͘-chāi.

Hadley sûn-khoân sī kí 1 chióng tāi-khì sûn-khoân (atmospheric circulation), ùi chhiah-tō chhèng koân ê khì-liû chaú kaù hūi-tō͘ 30° hit tah tîm--lo̍h-lâi, koh chaú tńg-khì chhiah-tō, chō-chiâⁿ 1 ê sûn-khoân. Jia̍t-tāi ê tāi-khì sûn-khoân tiāⁿ-tio̍h ài khó thài-iông-lêng. Tē-kiû pún-sin ū 23.5° ê te̍k-khi (axial tilt), kan-taⁿ jia̍t-tāi hū-kīn kúi 10 tō͘ ê hoān-ûi tī thaù tiong-taù ê sî Ji̍t-thaû ē tit ti̍t-chiap chhiō--tio̍h, kiat-kó, thài-iông hok-siā (solar radiation) ê e-nú-jih (energy) lóng chi̍p-tiong tī chhiah-tō, chiah-ê jia̍t-lêng toā-hūn ēng bī-jia̍t (chiâm-jia̍t, latent heat) ê hêng-sek, khò lûi-kong-hō͘ (thunderstorm) ê tùi-liû (convection) chok-iōng, sàng kaù tāi-khì-chân khì.