Analysis on the sea level anomaly high of 2012 in China coastal area

In 2012,the sea level anomaly high was the most prominent feature of sea level change in China coastal. The sea level was 122 mm higher than normal,53 mm higher than 2011,reached its highest level since 1980. Based on the 30 years water level,sea surface temperature,air temperature,barometric pressure and wind hydrological and meteorological data,the sea level anomaly high of 2012 in the China coastal area is investigated. The research results show: the coincidence of several long-period vibration made the sea level high during 2010 to 2012. In 2012,China coastal area air temperature and ocean temperature were higher than normal,the barometric pressure was 1.2 hpa lower than normal,reaching the lowest level in history; in 2012,SCSSM time was earlier than normal,and later than normal end,the South China Sea strongest southerly wind lead China Yellow Sea,East China Sea and South China Sea coastal waters for a long time accumulation,which caused sea level rise. In 2012,tropical cyclones landing time was focus,the number of typhoons affecting a wide range of northern regions were the most of history,especially in August 2012,there were six tropical cyclones affecting China's coastal area,sea level rise for the month obviously. In addition,the subtropical high was northerly,easterly and weakness,which also have some impact on the sea level rise of the East China Sea and South China Sea in 2012.