Progress report2009/03/19

---KDP-R ZH-R(300)ZDR-RDSD-RZh-R(Steiner)---

--623DTM40200

CASC-2D

WRF2005

WRF NCEP-FNL(1*1 )

81km27km9km3km100*70112*8597*8285*67243s81s27s9s30- level36YSULin et al.(1983)Grell-Devenyi(2002)(RRTM) (Dudhia 1989)

http://www.cwb.gov.tw/

WRF-9KMWRF-3KMRMSE1.96 13.64 EFFIC-4.22 -66.48

2001

2005CASC2DFLO-2D

RMSEEFFIC

IDWTheissenKDP-RZH(300)-RZDR-RDSD-RZH(S)-RCASC-2D0.83 0.9260.85891.67 4.22 0.88 2.81 CASC-2D(AVG.)0.80 0.87 1.60 3.97 0.91 3.03 FLO-2D0.77 0.82 1.46 6.01 0.86 2.81

IDWTheissenKDP-RZH(300)-RZDR-RDSD-RZH(S)-RCASC-2D0.39 0.1330.23603-10.70 -78.38 0.04 -31.88 CASC-2D(AVG.)0.680.22 -7.02 -64.09 -0.11 -31.76 FLO-2D0.52 -7.60 -80.23 0.21 -31.88 0.52

THE END~~~~~

Z-R relationship(2002 Javier et al.,2007)

a=302.6b=1.28a=268.9b=1.34B=3.77

:Steiner(Steiner et al.1995)

KDP-R relationship

r1r2

D1D2D3D43124

123

Hf wetdry

Steiner(Steiner,1995)

Zg : dBZMBR:Mean Background Reflectivity) (dBZ)

A=3*10-3

B=1.22(Zrnic et al .,1999)ZDRR3

R4(DSD-R)(In ms-1 for Deq in mm)(Doviak and Zrnic, 1993)

N0

(Brandes et al. , 2002)

RMSE(root mean square error)

Qisi(m3/hr)Qioi(m3/hr)NRMSE

EFFICefficiency coefficient(Kirkby et al. 1987)

Qioi(m3/s)Qisi(m3/s) (m3/s)nEFFIC101

**** * Yonsei University YSUHong and Pan 1996Rapid Radiative Transfer Model. Mlawer et al. 1997

*1.peakpeak

*1.M*1.Steiner 2. *1.Aydin and Giridhar(1992) A=2.37* 10-3 B=1.172.Scarchilli(1993) A=3.61*10-3 B=1.28*Zhang(2001) GM Brande1.132.ZDRmu3.1lum4.2zh N0*/kbi/ *