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・ Season's Greetings from moe.
・ Season's Greetings from Perry Como
・ Seasonal adjustment
・ Seasonal affective disorder
・ Seasonal Agricultural Workers Program
・ Seasonal Attribution Project
・ Seasonal beer
・ Seasonal bonuses (Japan)
・ Seasonal breeder
・ Seasonal effects on suicide rates
・ Seasonal energy efficiency ratio
・ Seasonal flows on warm Martian slopes
・ Seasonal food
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Seasonal lag
・ Seasonal migration in Niger
・ Seasonal packaging
・ Seasonal spread trading
・ Seasonal subseries plot
・ Seasonal thermal energy storage
・ Seasonal tropical forest
・ Seasonal year
・ Seasonality
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Seasonal lag : ウィキペディア英語版
Seasonal lag

Seasonal lag is the phenomenon whereby the date of maximum average air temperature at a geographical location on a planet is delayed until some time after the date of maximum insolation. This also applies to the minimum temperature being delayed until some time after the date of minimum insolation.
An analogous temperature lag phenomenon occurs in diurnal temperature variation, where maximum daily temperature occurs after noon (maximum insolation).
==Seasonal lag on Earth==

Earth's seasonal lag is largely caused by the presence of large amounts of water, which has a high latent heat of freezing and of condensation. The length of seasonal lag varies between different climates, with extremes ranging from as little as 15–20 days (for polar regions in summer and continental interiors) to as much as 2½ months (for low-latitude oceanic areas). Interestingly, in many locations, it is not "seasonally symmetric"; that is, the period between the winter solstice and thermal midwinter (coldest time) is not the same as between the summer solstice and thermal midsummer (hottest time). In low and mid latitudes, the ''summer'' lag is longer, while in polar areas the ''winter'' lag is longer (coreless winter in interior Antarctica and Greenland). In mid-latitude continental climates, it is approximately 20–25 days in winter and 25–35 days in summer.
San Francisco, for example, has a long seasonal lag of approaching three months in the summer, with typical temperatures peaking around mid-September, and October as its second-warmest month, but very little seasonal lag in the winter, with the lowest temperatures in late-December around the winter solstice. This is caused by the water in the Bay Area surrounding the city on three sides. Many areas along North America's west coast have very small winter lag and are characterized by a much more gradual spring warming and rapid autumn cooling.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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