GPM/DPR Precipitation Compared with the 3.5-kmresolution NICAM Simulation
Shunji Kotsuki, Koji Terasaki and Takemasa Miyoshi
1RIKEN
Advanced Institute for Computational Science, Japan
1. Goals and Precipitation Datasets
○ Goals
ー Comparing the GPM/DPR-derived precipitation data with
other precipitation data and a NICAM 3.5-km simulation
○ Precipitation Datasets
ー GPM/DPR (Hou et al. 2014)
・Normal Scan (NS): KuPR/NS (similar to TRMM/PR) and DPR/NS
・High Sensitivity Scan (HS) : DPR/HS
ー NICAM 3.5km (Satoh et al. 2014)
・Initialized NCEP-FNL and 48-hour simulation (24-h spin-up)
・Joint Simulator for radar reflectivity (Hashino et al. 2013)
ー Other satellite-derived precipitation data
・GSMaP/NRT (Ushio et al. 2009) & GPM/GMI (microwave imager)
GPM: Global Precipitation Measurement,
DPR: Dual-frequency Precipitation Radar
TRMM: Tropical Rainfall Measurement Mission GMI: GPM Microwave Imager
Fig. Average surface precipitation over 12 hours (mm h-1).
NICAM: Nonhydrostatic Icosahedral Atmospheric Model
: GPM/GMI
: GPM/DPR
: NICAM-Joint-Simulator
: NICAM
2. Results and Discussion
Frontal Precipitation over Japan
CFADs over storm track regions
KuPR/NS & DPR/NS ≠ DPR/HS
CFADs: Contoured Frequency
by Altitude Diagrams
Grid counts for CFADs
at each altitude
Smaller convection
NICAM-Joint-Simulator ＞ GPM/DPR
Bright band/0
NICAM ≒ GPM/DPR
height over storm track regions
NICAM-Joint-Simulator
＞ GPM/DPR
---: GPM Bright band height (m)
---: NICAM 0°C height (m)
KuPR/NS & DPR/NS ≒ NICAM
DPR/HS ≠ NICAM
3. Citation
Kotsuki S., K. Terasaki and T. Miyoshi (2014):
GPM/DPR Precipitation Compared with the 3.5-km-resolution NICAM Simulation. SOLA. (in press)