Figure 3
From: Annual variations of monsoon and drought detected by GPS: A case study in Yunnan, China

Maps of annual amplitude (upper panel, unit: mm) and phase (lower panel, unit: day of year) of PWV, precipitation, EWH, GPS-derived and GRACE-derived VCD. The annual phase is the day of the year (doy) when an annual signal reaching its maximum. This figure is generated by using the Generic Mapping Tools (Version 5.3.1)26.