The International Meridien Conference of 1884 established Greenwich MeanTime, referring to the meansolartime at the Royal Observatory in Greenwich, near London.
1884年，国际子午线大会确立了格林威治标准时间（GMT），即伦敦附近的格林威治皇家气象台（the Royal Observatory in Greenwich）的平均太阳时间。
2
Greenwich meantime (GMT) is meansolartime at the Royal Greenwich Observatory in Greenwich, London, England, which by convention is at 0 degrees geographic longitude.
格林尼治国际标准以英国伦敦格林威治皇家天文台为准，也就是零经度为准。
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And the solar short wave radiation, net long wave radiation and ocean heat flux are all used with a daily mean for every time step based on the sea ice mid-short range variation characteristics.