6 and 7 , it can be found that GWS represented by IC1 shows that there is different trend between 2003–2007 and 2007–2017, showing a increasing trend and a decreasing trend continuously, respectively.
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The analysis on groundwater storage variations from GRACE/GRACE-FO in recent 20 years driven by influencing factors and prediction in Shandong Province, China.
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The sentences
The IC4 signal has a significant piecewise linear trend, which decreased obviously from 2003 to 2011, showing an increasing trend after 2012.