A Comprehensive Analysis of the Changes in Precipitation Patterns over Beijing during 1960–2012

Figure 5

Time series of PCI, PCD, and PCP over the period of 1960–2012. The red solid line indicates the linear regression trend. The red dashed line means the boundary between the months June and July for the PCP. If the PCP is lower than 180, the maximum monthly precipitation appears in June. If the PCP ranges from 180 to 210, the maximum value appears in July.