Study on relations between heavy-disaster-period of forest fire activity and sunspot activity, SSTA
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The HDPFF (heavy-disaster-period of forest fire) takes up 1 / 4−1 / 3 of all observation years, but the loss takes up 80–90% of all. The author studied the relations between forest fire activity in Heilongjiang Province from 1950 to 1989 and activity of sunspot, SSTA (sea surface temperature abnormality) of the North Pacific Ocean. The study discovered that: (1) there was a negative correlation between forest fire condition in Heilongjiang Province and annual average of sunspot relative numbers, furthermore, the heavy-disaster-period was prone to occur in valley year and the next year; (2) SSTA in the North Pacific Ocean markedly influenced the forest fire activity and the level of its conditions in Heilongjiang province.
Key wordsForest fire Heavy-disaster-period Sunspot activity Sea surface temperature abnormality
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