mcs 20090615-2009061606. 1. introduction where? observed reflectivity at 3km from 2006061518-...
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MCS 20090615-2009061606
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1. Introduction
• Where?
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Observed reflectivity at 3km from 2006061518- 2006061618
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2. Experiment design
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Case name GSI DFICloud analysis First pass
Default valueSecond pass¼ of default value
Moist variable which applied dfi
Novar No gsi Wrf office version dfi, with dfi_radar=0
Conv stratiform Conv(all) none Applied DFI to Qv only, other mosit variable like Qs, Qc, Qr, Qg, Qi are remain unchanged andTemperature tendency added gradually (Current RUC version)
Ref stratiform Conv(all)+ rad_refCloud analysis followed by 3dvar
none The same above
Ref+Vel stratiform Conv(all)+ rad_refCloud analysis followed by 3dvar
Conv(uv+spd)+rwOnly 3dvar analysis
The same above
NODFI(only 15UTC available)
stratiform The same above The same above No dfi
GDWGND stratiform Conv(all) Radar reflective and radial velocity but in this time, GSI are not followed with GSI step1 but after wrf dfi. Then run gsi and wrf without dfi
Fisrt step with DFI and second without DFI
CV(Ref+Vel) convective The same above The same above Applied DFI to Qv only, other mosit variable like Qs, Qc, Qr, Qg, Qi are remain unchanged andTemperature tendency added gradually (Current RUC version)
VC convective Conv(all)+ rad_ref+rwOnly 3dvar analysis
Conv(all)+ rad_ref+rwOnly cloud analysis
The same above
All_init convective Conv(all)+ rad_refCloud analysis followed by 3dvar
Conv(uv+spd)+rwOnly 3dvar analysis
Applied DFI to all the moist variable and added Temperature at one time at the initial status of forward step (Current RUC version but with dfi_radar = 0)
IAU ConvectiveWith moist variable tendency added
Conv(all)+ rad_refCloud analysis followed by 3dvar
Conv(uv+spd)+rwOnly 3dvar analysis
Applied DFI to all the moist variable , Temperature tendency added gradually and also other moist variable tendency added gradually (like Current RUC version with dfi_radar = 0 but added moist variable tendency modified by Yi)
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3. incremental
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2009061606 radar reflectivity at 3km
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Wind field incremental of GSI ---conventional data plus radar reflectivity
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Wind field incremental of GSI ---radar radial velocity
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Surface variable incremental-- conventional data plus radar reflectivity
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Surface variable incremental-- radar radial velocity
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Moisture field incremental
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4. Forecast result
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12 hour accumulated rainfall—from1518-1606
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12 hour accumulated rainfall—from1518-1606
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5. verification
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Verification domain--130 Regional (CONUS) Lambert Conformal grid 13 km
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061515
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I hour accumulated rainfall verification—different data
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Stratiform VS Convective
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Different procedure
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12 hour accumulated rainfall verification
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Next plan
• Ran with high resolution
• Change the cloud classification