the coastal temperature, sea temperature, air pressure and sea level changes
<img src=" http://i3 .sinaimg.cn/dy/c/2012-07-04/1341384021_g19Q6R.jpg "alt=" the data in Figure "title=" data map "/the data in Figure
BEIJING, July 4 According to the news website of the State Oceanic Administration, State Oceanic Administration has released on its official Web site of the 2011 China Sea Level Bulletin, the statement pointed out that nearly 30 years of China’s coastal air and ocean temperature showed an upward trend, acceleration of 0.04 ℃/year and 0.02 ℃/year, respectively.
communique pointed out that global warming causes seawater to expand, and polar ice caps and land-based sources of glacier melting caused by global sea level rise. Regional sea-level change also affected by the local sea temperature, currents, wind, temperature, barometric pressure and rainfall and other hydro-meteorological elements. From 1980 to 2011, China’s coastal temperatures and sea surface temperature showed an upward trend, acceleration of 0.04 ℃/year and 0.02 ℃/year, respectively; pressure downward trend, the rate of change of -0.03 hPa/year. In the same period, the average Chinese coastal sea-level rise rate of 2.7 mm/year.
2011, the Chinese coastal average temperature of 16.8 ° C, compared to the normal level of 0.1 ° C, a 2010 low of 0.1 ° C; average sea temperature was 17.9 ℃, 0.3 ℃ lower than normal, and 2010 respectively. and 0.4 ° C; mean pressure of 1012.9 hPa than the normal low of 0.1 hPa, 0.6 hPa higher than in 2010. During the same period, China’s coastal sea level higher than normal 69 mm, 2 mm higher than in 2010.
2011 years, the Bohai Sea Yellow Sea along the coast in January and the Taiwan Strait, north of the coastal March sea level than the same period the year is significantly lower; September and the Yellow Sea coast in November, the South China Sea along the coast, sea level than the same period the year was significantly high, local area for nearly 30 years to the same period of the highest value. The sea temperature, air temperature, barometric pressure, wind, and precipitation is an important reason to cause the above-mentioned characteristics.
2011, the Yellow Sea, Bohai Sea coastal temperatures and sea surface temperature than the same period the year were 2.2 ℃ and 1.2 ℃ lower pressure than the same period the year high 3.0hPa, resulting in China’s Bohai Sea Yellow Sea in January sea level was significantly biased low, compared to same period the year low of about 20 mm.
2011, the Taiwan Strait, north of the coastal southwest wind anomalies, mostly offshore wind coastal water reduction, the average sea surface temperature than normal over the same period low of 0.3 ° C, the average pressure than the same period the year high of 1.6 hPa, earlier than normal to below normal precipitation, sea level than the same period the year is significantly lower 48 mm.
in September 2011, the Pearl River estuary to the eastern coast of Hainan Island air pressure than the same period the year 2.2 hPa lower temperatures and sea surface temperature respectively over the same period the year high of 0.2 ℃ and 0.1 ℃; anomaly wind field direction to the shore, sea water accumulation; occurred in the area of ??heavy rainfall in the the Qinglan station monthly precipitation of 551 mm, maximum daily precipitation of 199 mm. September the eastern coast of the Pearl River estuary to Hainan Island, the average sea level up to the highest value in 30 years, nearly 200 mm higher than the same period the year.
2011, the average pressure of the Yellow Sea coastal than the same period the year low of 1.5 hPa average temperature and average sea surface temperature than the same period the year, respectively, 2.6 ℃ and 1.8 ℃ higher; the Yellow Sea for the easterly winds anomaly area is conducive to the accumulation of water to the shore. In November, the Yellow Sea coastal mean sea level than normal over the same period nearly 180 mm high, reaching nearly 30-year high.welcome to leave a comment share: microblogging recommended