Based on the observation data from China coastal marine stations,the key indicators of marine climate along China coast were explored,including sea surface t emperature(SST),sea level and sea ice.Results show that:(a)...Based on the observation data from China coastal marine stations,the key indicators of marine climate along China coast were explored,including sea surface t emperature(SST),sea level and sea ice.Results show that:(a)The SST along China coast continues rising and increased by 0.25℃/decade during 1980-2019,the warming accelerated significantly after 2011 and it has been well above normal for five consecutive years since 2015.In 2019,the average SST along China coast was 1.1℃ higher than normal(with 1981-2010 taken as a reference period),ranking the highest since 1980.Besides,the SST extremes have been explored based on four long-term marine stations for the period 1960-2019.(b)Sea level along China coast continues to rise at an accelerated rate.The mean sea level rise rate along China Coast was about 2.4 mm/yr during 1960-2019,3.4 mm/yr during 1980-2019,and 3.9 mm/yr during 1993-2019,with significant regional differences.The relatively stronger sea level rise trends were observed along the coastal waters of the Bohai Bay,the Laizhou Bay,the Yangtze River Estuary,the Pearl River Estuary,and the Hainan Island,respectively.Besides,the extreme sea levels along China coast showed an obvious upward trend from 1980 to 2019.During this period,the annual rise rate of extreme high water level along China coast was 4.4 mm/yr,and had obvious regional characteristics,with the highest rate of 9.9 mm/yr observed at Yantai of Shandong Province,(c)The annual sea ice period and sea ice cover of the Bohai Sea(BS)decreased substantially during 1963-2019 by 0.7-1.3 days/yr and 45-59%/yr,respectively,and the decrease rate of ice cover is larger in the north than that in the south.2019 was the year of light icing.展开更多
基金supported by the National Key Research and Development Program of China(NO.2016YFC1402610).
文摘Based on the observation data from China coastal marine stations,the key indicators of marine climate along China coast were explored,including sea surface t emperature(SST),sea level and sea ice.Results show that:(a)The SST along China coast continues rising and increased by 0.25℃/decade during 1980-2019,the warming accelerated significantly after 2011 and it has been well above normal for five consecutive years since 2015.In 2019,the average SST along China coast was 1.1℃ higher than normal(with 1981-2010 taken as a reference period),ranking the highest since 1980.Besides,the SST extremes have been explored based on four long-term marine stations for the period 1960-2019.(b)Sea level along China coast continues to rise at an accelerated rate.The mean sea level rise rate along China Coast was about 2.4 mm/yr during 1960-2019,3.4 mm/yr during 1980-2019,and 3.9 mm/yr during 1993-2019,with significant regional differences.The relatively stronger sea level rise trends were observed along the coastal waters of the Bohai Bay,the Laizhou Bay,the Yangtze River Estuary,the Pearl River Estuary,and the Hainan Island,respectively.Besides,the extreme sea levels along China coast showed an obvious upward trend from 1980 to 2019.During this period,the annual rise rate of extreme high water level along China coast was 4.4 mm/yr,and had obvious regional characteristics,with the highest rate of 9.9 mm/yr observed at Yantai of Shandong Province,(c)The annual sea ice period and sea ice cover of the Bohai Sea(BS)decreased substantially during 1963-2019 by 0.7-1.3 days/yr and 45-59%/yr,respectively,and the decrease rate of ice cover is larger in the north than that in the south.2019 was the year of light icing.
