describe seasonal variation in temperature
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Seasonal Variation
Seasonal variation accounts for the single largest percentage of the variance in most coral isotope, trace, and minor element records. In regions such as Japan and the Galápagos with distinct SST seasonality, the annual periodicity in δ18O, Sr/Ca, Mg/Ca, and U/Ca is pronounced. In regions heavily affected by monsoonal rains such as Tarawa Atoll, the seasonal variation in δ13C is regular and pronounced. Δ14C also has an annual periodicity in coral from regions with a strong seasonal upwelling regime such as is seen in the Galápagos (see next section). The strength and duration of the upwelling season is reflected in the length and degree of Δ14C decrease in the coral record.
Seasonal variation accounts for the single largest percentage of the variance in most coral isotope, trace, and minor element records. In regions such as Japan and the Galápagos with distinct SST seasonality, the annual periodicity in δ18O, Sr/Ca, Mg/Ca, and U/Ca is pronounced. In regions heavily affected by monsoonal rains such as Tarawa Atoll, the seasonal variation in δ13C is regular and pronounced. Δ14C also has an annual periodicity in coral from regions with a strong seasonal upwelling regime such as is seen in the Galápagos (see next section). The strength and duration of the upwelling season is reflected in the length and degree of Δ14C decrease in the coral record.
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Causes of Seasonal Temperature Differences. All locations on earth except latitudes near the equator experience seasonal temperature changes. ... The changes are a consequence of the earth's orbital motion about the sun, coupled with the tilt of earth's axis of rotation with respect to its orbital plane.
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