I Dewa Gede A Junnaedhi Weather and Climate

WCPL Members • • • Dr. Tri Wahyu Hadi (Head) Nurjanna Joko T. (now

• Developed NWP system in ITB 27 km x 27 km (Figure by

Nimbus server : (downloading data and webserver) ⁻ Dual Opteron @ 1. 4 GHz

• Website screenshots MM 5 Forecast NHM Forecast WRF Forecast

Wind driven wave forecast using MM 5 output and Wavewatch III model Weather on

4 -MODEL INTERCOMPARISON (1) CCAM (Figure by JMA) Data initial Global model output

MODEL INTERCOMPARISON (2) AWS observations C A B

MODEL INTERCOMPARISON (3) Model Set-up Field Meridional Grid Dimensions Zonal Grid Dimensions Vertical

CURRENT RESULTS (1) Up to 24 -hour prediction, 3 -hourly interval, Feb. 2009

CURRENT RESULTS (6) Root Mean Squared Vector Error day time Bandung Sumedang phase

CURRENT RESULTS (8) Rainfall Prediction First 24 -hour Second 24 -hour

Slides: 15

Download presentation

I Dewa Gede A. Junnaedhi Weather and Climate Prediction Laboratory Bandung Institute of Technology

WCPL Members • • • Dr. Tri Wahyu Hadi (Head) Nurjanna Joko T. (now at Kyoto Univ. ) I D. G. A. Junnaedhi Noersoemadi (Master student at ITB) M. Ridho S. (will begin master study at ITB) 7 undergraduate students (incl. Gilang P. )

• Developed NWP system in ITB 27 km x 27 km (Figure by JMA) 9 km x 9 km Global model output : NCEP-GFS : 1° x 1°, 6 hour interval, 24 pressure levels, up to 48 -hour prediction Downscaled using mesoscale models (MM 5, WRF and NHM) : 27 km x 27 km (domain 1), 9 km x 9 km (domain 2), 3 hour interval, 31 vertical level, 48 -hour prediction

Nimbus server : (downloading data and webserver) ⁻ Dual Opteron @ 1. 4 GHz ⁻ 2 GB memory ⁻ Nearly 2. 5 TB storage Typhoon cluster : (for running model) - 6 nodes Intel Quad Core @ 2. 4 GHz - 4 GB memory each - Nearly 1. 5 TB storage

• Website screenshots MM 5 Forecast NHM Forecast WRF Forecast

Wind driven wave forecast using MM 5 output and Wavewatch III model Weather on Google. Map for few city over Indonesia

4 -MODEL INTERCOMPARISON (1) CCAM (Figure by JMA) Data initial Global model output : NCEP-GFS : 1° x 1°, 6 hour interval, 24 pressure levels, case study of Feb. 2008, initial at 1200 UTC, up to 48 -hour prediction donwscale 27 km x 27 km Initial & boundary condition Donwscale (MM 5, WRF, and NHM) 9 km x 9 km

MODEL INTERCOMPARISON (2) AWS observations C A B

MODEL INTERCOMPARISON (3) Model Set-up Field Meridional Grid Dimensions Zonal Grid Dimensions Vertical Level Grid Resolution Parent Grid Ratio Parent time step Ratio Nest Type Explicit Moisture Scheme MM 5 Domain 1 Domain 2 NHM Domain 1 Domain 2 280 193 145 94 31 27 km 1 31 9 km 3 32 27 km 1 32 9 km 3 32 27 km 1 1 3 1 1 - Way 2–Way (online) WSM 3 class simple ice scheme CCAM (C 48) Domain 1 Domain 2 Global (48 x 48 x 6) 32 9 km 3 18 27 km 1 18 9 km 3. 33 3 1 3. 33 Streched Schmidt Transf. (Offline) - 1 - Way 2 -Way (online) 1 - Way 2 -Way (Offline) Streched Schmidt Transf. Graupel (Reisner 2) Simplified Graupel - Microphysics Longwave Radiation physics WRF Domain 1 Domain 2 RRTM scheme Planetary Boundary Layer Scheme MRF scheme Cumulus Scheme Grell Devenyi Kain-Fritsch Grell Shortwave Radiation physics Rotstayn GFDL (Fels. RRTM GSM 0103 Schwarzkopf scheme ) GFDL (Fels. Schwarzkopf ) MRF Yamada. Moninscheme Mellor Obukhov Convjlm – Kain-Fritsch Mc. Gregor 2 (2003) Rotstayn GFDL (Fels. Schwarzkopf ) Monin. Obukhov Convjlm – Mc. Gregor (2003)

CURRENT RESULTS (1) Up to 24 -hour prediction, 3 -hourly interval, Feb. 2009 D 1 D 2

CURRENT RESULTS (2) D 1 D 2

CURRENT RESULTS (3) D 1 D 2

CURRENT RESULTS (4) D 1 D 2

CURRENT RESULTS (6) Root Mean Squared Vector Error day time Bandung Sumedang phase different Lampung Timur Lampung Selatan CCAM has different phase error for the first 24 -hour prediction

CURRENT RESULTS (8) Rainfall Prediction First 24 -hour Second 24 -hour