2002: The Most Abnormal Year of Phenology in Beijing for the Last 150 Years

The phenological features in Beijing in 2002 are discussed based on phenological observations. And the conclusions are drawn as follows. The phenoseason and phenodate in 2002 is the most abnormal in Beijing for the last 150 years. Compared with the phenology for normal year, it suggests that the former-winter (2001—2002) of 2002 is short and warm, spring is early so the phenodate advance obviously, summer is hot and long, autumn is cool and short, the later-winter (2002—2003) is cold at the beginning of the winter. Compared with the phenodate in spring for the last 150 years in Beijing, it suggests that the warm winter and advanced spring in 2002 is the most obvious in the last 150 years in Beijing. Although the beginning date of winter between 2002 and 2003 is the same as that of normal years, the warm winter and advanced spring in recent future will still remain a certain period derived from the changing trend of spring phenodate in Beijing for the last 150 years.

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