Mesoscale Eta Model Nov 2001 Implementation

Warm-season Retrospective Verification

and

Impact on Soil Moisture (warm, cold retros and current parallel)

I. Experiment Conducted
II. Precipitation Verification Statistics
 III. Upper-air Verification Statistics
 IV. Time Series of Upper-air Bias and RMS Statistics Over CONUS
 V. Impact on EDAS Precipitation and Soil Moisture Fields
 VI. Additional Graphic Output for the Experiments

I. Experiment Conducted:

22-km retrospective run, 00Z 13 Aug - 12Z 12 Sep 2000. The control run is the final "bundle" retrospective run (22km, for the same time period) conducted in May-Jun 2001, for the Jul 2001 Eta implementation.

II. Precipitation Verification Statistics

Red solid lines: control run

Blue dashed lines: new cloud microphysics/precipitation assimilation

CONUS Eastern U.S. Western U.S.
EDAS X X X
ETA 24+36+48+60h fcst X X X
ETA 0-24h fcst X X X
ETA 12-36h fcst X X X
ETA 24-48h fcst X X X
ETA 36-60h fcst X X X

III. Upper-air Verification Statistics Over CONUS

Black solid lines: control run

Red dashed lines: precipitation assimilation

12h fcst 24h fcst 36h fcst 48h fcst 60h fcst 12+36+60h fcst
RMS Temperature X X X X X X
RMS Height X X X X X X
RMS RH X X X X X X
Bias RH - - - - - X
RMS Wind X X X X X X

IV. Diurnal cycle statistics of near-surface fields (model vs. obs)

Verification Region
Eastern U.S. Western U.S.
Run Cycle
00Z 12Z 00Z 12Z
2m Temperature X X X X
2m Relative Humidity X X X X
10m Wind X X X X

V. Impact on EDAS Precipitation and Soil Moisture Fields

1. Warm-season retrospective run (00Z 13 Aug - 12Z 12 Sep 2000):

Soil at 12Z 12 Sep 2000
Control New Run
0-10cm Volumetric Soil Moisture X X
10-40cm Volumetric Soil Moisture X X
40-100cm Volumetric Soil Moisture X X
100-200cm Volumetric Soil Moisture X X
0-100cm Soil Moisture Availability X X
0-200cm Soil Moisture X X

EDAS fields, 13 Aug - 12 Sep 2000
Control New Run
EDAS PCP Accum (Pedas) X X
Obs'd PCP Accum (Prfc) X X
Pedas-Prfc X X
(Pedas-Prfc)/Prfc X X
EDAS Evaporation X X
Pedas-EVAP X X
Potential Evaporation X X
Snow Melt X X
SSRUN X X
BGRUN X X

2. After 1-month of cold-season retrospective run (12Z 1 - 12Z 28 Feb 2001, 22km ETA):

Soil at 12Z 28 Feb 2001
Control New Run OPNL Eta
0-10cm Volumetric Soil Moisture X X X
10-40cm Volumetric Soil Moisture X X X
40-100cm Volumetric Soil Moisture X X X
100-200cm Volumetric Soil Moisture X X X
0-100cm Soil Moisture Availability X X X
0-200cm Soil Moisture X X X

EDAS fields, Feb 2001
Control New Run OPNL Eta
EDAS PCP Accum (Pedas) X X X
Obs'd PCP Accum (Prfc) X X X
Pedas-Prfc X X X
(Pedas-Prfc)/Prfc X X X
EDAS Evaporation X X X
Pedas-EVAP X X X
Potential Evaporation X X X
Snow Melt X X X
SSRUN X X X
BGRUN X X X

3. After 23 days of real-time parallel run (12km parallel vs. 22km operational ETA, 00Z 13 Oct - 12Z 5 Nov 2001):

Soil at 12Z 5 Nov 2001
22km OPNL 12km ETAX
0-10cm Volumetric Soil Moisture X X
10-40cm Volumetric Soil Moisture X X
40-100cm Volumetric Soil Moisture X X
100-200cm Volumetric Soil Moisture X X
0-100cm Soil Moisture Availability X X
0-200cm Soil Moisture X X

EDAS fields, Sep-Oct 2001
ETA12 (22 Sep-12 Oct) ETA12 (13-31 Oct) OPNL Eta (1-31 Oct)
EDAS PCP Accum (Pedas) X X X
Obs'd PCP Accum (Prfc) X X X
Pedas-Prfc X X X
(Pedas-Prfc)/Prfc X X X
EDAS Evaporation X X X
Pedas-EVAP X X X
Potential Evaporation X X X
Snow Melt X X X
SSRUN X X X
BGRUN X X X

VI. Additional Graphic Output for the Experiments

Plots for each cycle during 00Z 13 Aug - 12Z 12 Sep 2000

wd22yl@ncep.noaa.gov