Nasa-jpl/ucla june, 2011 Outline Data assimilation and a multi-scale scheme


НазваNasa-jpl/ucla june, 2011 Outline Data assimilation and a multi-scale scheme
Дата конвертації05.05.2013
Розмір445 b.
ТипПрезентации


Improved Simulations of Clouds and Precipitation Using WRF-GSI

Zhengqing Ye and Zhijin Li

NASA-JPL/UCLA

June , 2011

Outline

  • Data assimilation and a multi-scale scheme

  • WRF and data assimilation in March, 2000

  • Data assimilation in June, 2007

  • Summary



Multi-Scale 3DVAR: Multi-Scale Background Error Covariance



WRF and Data Assimilation Configuration: Case during the March 2000 Cloud IOP

  • The North American Regional Reanalysis (NARR) : Initialization and the lateral boundaries

  • Observations: SONDE profiles and surface observations



Improved Meteorological Fields



Impact of ARM and Satellite Data Case during the June 2007 CLASIC IOP

  • Conventional data

  • ARM (Atmospheric Radiation Measurement) data

  • Satellite data:

amsua: Radiance (Brightness Temp) from

NOAA 16, 17, 18, metop-a

amsub: NOAA 15,16,17

hirs3: NOAA 16, 17

airs : NASA AQUA

mhs : NOAA 18, metop-a

Conventional, ARM and Satellite Data points

Conventional & ARM data (2007061300) Satellite data (2007060900)

NEXRAD Reflectivity: Meso-Scale Convective System (MCS): June 14, 2007



Improved Reflectivity: UTC 06, 14 June, 2007



Improved Simulation of A Meso-scale Convective System



Observed 6-hour Precipitation



Improved Precipitation: UTC 18-24, 13 June, 2007



Improved Precipitation: UTC 00-06, 14 June, 2007



Summary



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