Global ocean mass (GOM) change, which is mainly influenced by water outflow from land, has been identified as one of the important contributors to present‐day sea level rise. Here, we delineated GOM change by dividing the land into five parts, which are exorheic river basins, endorheic basins, polar ice sheets, and land glaciers and ice caps, by the Gravity Recovery and Climate Experiment mass concentration solutions, 2002–2017. We estimated their total contribution to GOM change to be 568.92 ± 21.43 GT•yr⁻¹, which is statistically congruent with the Gravity Recovery and Climate Experiment estimated GOM change (579.46 ± 46.62 GT•yr⁻¹). The melting of Earth's ice reservoirs is the dominant contribution in the whole period. However, an abnormal increase is found in the trend of GOM change with an amplitude of approximately 100% since August 2008. Further finding reveals that melting of Antarctica Ice Sheets are increasing fast and significantly dominates among other geophysical contributions to the abnormal increase at 34.28%, following with the water storage change of exorheic river basins at 28.71% and the melting of Greenland Ice Sheets at 22.76%, which is postulated to be resulting from intensified ice wastages and precipitation during the last decade.

中文翻译：

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利用GRACE进行的全球陆地海洋质量变化的平衡和异常增加

主要受陆地水流出影响的全球海洋质量（GOM）变化已被确定为当今海平面上升的重要因素之一。在这里，我们通过重力恢复和气候实验质量浓度解决方案（2002-2017年）将土地分为五个部分，来描述GOM的变化，这五个部分是溢流河盆地，溢流盆地，极地冰原以及陆地冰川和冰盖。我们估计它们对GOM变化的总贡献为568.92±21.43 GT•yr ^{− 1}，这与重力恢复和气候实验估计的GOM变化（579.46±46.62 GT•yr ^{− 1}）。在整个时期，地球冰库的融化是主要的贡献。然而，自2008年8月以来，GOM的变化趋势异常增加，幅度约为100％。进一步的发现表明，南极冰盖的融化正在迅速增加，并且在其他地球物理贡献中占主要比例的异常增加为34.28％。紧随其后的是溢流河流域的储水量变化为28.71％，格陵兰冰盖的融化率为22.76％，这可能是由于过去十年来冰的浪费和降水加剧所致。