Figure 4
From: High-resolution precipitation monitoring with a dense seismic nodal array
Precipitation spatial distribution. (a) and (b) Maps in log-scale for the hourly precipitation accumulation based on seismic power spectral density and weather radar at 21:39 UTC on 26 April 2016. The seismic PSD derived precipitation rate is based on the relationship in Fig. 3e. The white line in (a) shows the contour for 10 mm hr−1 radar precipitation in (b), and the white line in (b) shows the contour for 10 mm hr−1 seismic PSD precipitation in (a). Regions with low data coverage are shown in gray. (c)–(e) Maps in log-scale for instantaneous precipitation rate at the same time as (a) and (b), (c) shows the raw seismic PSD at different locations, and (d) converts (c) to precipitation rate based on the relationship in Fig. 3e. (e) shows the radar instantaneous precipitation rate. White lines in (c) and (d) are the contour for 10 mm hr-1 radar precipitation in (e), while the while line in (e) is the contour for 10 mm hr-1 seismic PSD precipitation in (d). (f) The seismic PSD map in (c) minus the radar precipitation map in (e) (PSD-PR difference). Only regions with both radar precipitation rate and seismic converted precipitation rate (Fig. 3e) higher than 0.3 mm hr−1 are plotted. The variable plotted in (f) is expected to be proportional to the kinetic energy of a raindrop. The software used to create these maps is the Generic Mapping Tools, version 6.4.049 (https://www.generic-mapping-tools.org).
