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Seasonal Modeling (NOAA). Jian-Wen Bao Sara Michelson Jim Wilczak Curtis Fleming Emily Piencziak. Accomplishments. Preparation of gridded data sets for the entire summer of 2000 to initialize MM5 Refinement of the FDAA data preparation:

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Seasonal modeling noaa
Seasonal Modeling (NOAA)

Jian-Wen Bao

Sara Michelson

Jim Wilczak

Curtis Fleming

Emily Piencziak


Accomplishments
Accomplishments

  • Preparation of gridded data sets for the entire summer of 2000 to initialize MM5

  • Refinement of the FDAA data preparation:

    • Elevation of each sigma level varies with observation sites.

    • Observations are interpolated from two adjacent data levels to a given model level.

    • An anisotropic spatial influence function is being implemented and tested.

  • Observational data preparation for model evaluation:

    • Hand editted (level 1C) winds and RASS from 25 wind profilers for 60 days (3 August – 2 October, 2000)

    • Data from 1 June – 2 August remain to be editted

    • PBL depths for entire period, all profilers, have been calculated



36km grid 95x91

12km grid 91x91

4km grid 190x190

All have 50 layers,

with 22 in lowest 1km

Subregions

for Model

Evaluation

Wind profiler

sites


A major issue to settle
A Major Issue to Settle

What is the best model configuration for the seasonal simulations?

  • Through:

  • Evaluation of chemical model simulations

  • Evaluation of major transport processes

  • Comparison of the simulations using V6 and V7

  • Comparison of WRF and MM5


Chemical model evaluation
Chemical Model Evaluation

  • MM5 runs of two 5 day periods ( Jul 24- Jul 29 and Aug 3- Aug 8 2000) were completed.

  • Analysis and comparison of the above two runs with observations have been started.



ABL Height Comparisons the Jul-Aug Case

(Colored contours are TKE, and dots indicate the observed ABL height)




Domain and Physics the Jul-Aug Case

Configurations of MM5 and WRF

  • Physics Configuration in MM5:

  • the MYJ ABL and surface layer schemes

  • the NOAH land surface model (LSM)

  • the Dudhia short-wave, RRTM long-wave radiation

  • schemes

  • the Reisner microphysics parameterization

  • the Grell convective scheme (only on the 36 and 12

  • km grids)

  • Physics Configuration in WRF:

  • the MYJ ABL and surface layer schemes

  • the NOAH land surface model (LSM)

  • the Dudhia short-wave, RRTM long-wave radiation

  • schemes

  • the Lin et al. microphysics parameterization

  • the Kain-Fritsch convective scheme (only on the 36

  • km and 12 km grids)

NCEP’s ETA 40-km isobaric analysis is used to initialize both WRF and MM5 at 1200 UTC 29 July 2000.


Differences of MM5 and WRF the Jul-Aug Case

36 km

Topography

36 km

Topography

4 km

Landuse

4 km

Landuse

4 km

Topography

4 km

Topography

WRF

MM5

4 km

Veg-Frac

4 km

Veg-Frac

WRF

MM5


Differences in the lsm initialization
Differences in the LSM Initialization the Jul-Aug Case

Temperature at Soil Layer 1

WRF

MM5


Differences in the lsm initialization1
Differences in the LSM Initialization the Jul-Aug Case

Temperature at Soil Layer 2

WRF

MM5


Differences in the lsm initialization2
Differences in the LSM Initialization the Jul-Aug Case

Temperature at Soil Layer 3

WRF

MM5


Differences in the lsm initialization3
Differences in the LSM Initialization the Jul-Aug Case

Temperature at Soil Layer 4

WRF

MM5


Differences in the lsm initialization4
Differences in the LSM Initialization the Jul-Aug Case

Moisture at Soil Layer 1

WRF

MM5


Differences in the lsm initialization5
Differences in the LSM Initialization the Jul-Aug Case

Moisture at Soil Layer 2

WRF

MM5


Differences in the lsm initialization6
Differences in the LSM Initialization the Jul-Aug Case

Moisture at Soil Layer 3

WRF

MM5


Differences in the lsm initialization7
Differences in the LSM Initialization the Jul-Aug Case

Moisture at Soil Layer 4

WRF

MM5


Comparison of the simulated and observed the Jul-Aug Case

areal averaged 2m temperatures and 10m winds


Comparison of the simulated and observed the Jul-Aug Case

areal averaged 2m temperatures and 10m winds


Comparison of the simulated and observed the Jul-Aug Case

areal averaged 2m temperatures and 10m winds


Comparison of the simulated and observed the Jul-Aug Case

areal averaged 2m temperatures and 10m winds


comparison of simulated forward trajectories the Jul-Aug Case

WRF

WRF-mm5ics

MM5

from 1200 UTC 29 July

to 1200 UTC 2 August

from 1200 UTC 29 July

to 1200 UTC 2 August

from 1200 UTC 29 July

to 1200 UTC 2 August

from 0000 UTC 30 July

to 1200 UTC 2 August

from 0000 UTC 30 July

to 1200 UTC 2 August

from 0000 UTC 30 July

to 1200 UTC 2 August

from 1200 UTC 30 July

to 1200 UTC 2 August

from 1200 UTC 30 July

to 1200 UTC 2 August

from 1200 UTC 30 July

to 1200 UTC 2 August


Conclusions
Conclusions the Jul-Aug Case

  • Using MM5V3-6 for the seasonal modeling

  • Undesirable noise in the FDDA run

  • Uncertainties in the LSM

  • Some differences in the simulated and observed clouds on cloudy days

  • Averaging meteorological input in time

  • Optimizing “tunable” parameters through sensitivity experiments

  • Improving cloud physics and cloud-radiation interaction

Recommendations


Etl ccos web site www etl noaa gov programs modeling ccos data
ETL CCOS Web Site the Jul-Aug Casewww.etl.noaa.gov/programs/modeling/CCOS/data


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