East Asia Regional Reanalysis Project of CMA Xudong LIANG, JinFang - - PowerPoint PPT Presentation

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East Asia Regional Reanalysis Project of CMA Xudong LIANG, JinFang - - PowerPoint PPT Presentation

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International Symposium on Regional Reanalysis, 17-19 July 2018, Bonn East Asia Regional Reanalysis Project of CMA Xudong LIANG, JinFang YIN, Feng CHEN, Ying LIU, Huizhong HE State Key Laboratory of Severe Weather Chinese Academy of

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East Asia Regional Reanalysis Project of CMA

17-19 July 2019

Xudong LIANG, JinFang YIN, Feng CHEN, Ying LIU, Huizhong HE

State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences International Symposium on Regional Reanalysis, 17-19 July 2018, Bonn

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CONTENTS

  • Motivation
  • Framework of EARR
  • Observation data
  • Model & DA optimization
  • Schedule
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North American Regional Reanalysis (32km) Arctic System Reanalysis (30km) Chukchi–Beaufort High-Resolution Atmospheric Reanalysis (10km)

High Resolution Regional Reanalysis for Europe 0.2°

High-resolution Regional Reanalysis for the European CORDEX Domain (12-6-2 km) Japan (Downscaling) 5km

Motivation

Bureau of Meteorology Atmospheric high-resolution Regional Reanalysis for Australia (12-1.5km)

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4 Subtropical High Tropical cyclone “Meiyu” Monsoon The complicated conditions in East Aisa

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  • China Meteorological Administration (CMA) granted the key

project for data quality control(QC), global reanalysis (CRA), and East Asia Regional Reanalysis (EARR) in 2015

  • Is supported by a key project of Ministry of Science and

Technology of the People’s Republic of China from 2018

National Meteorological Information Center，CMA Guangdong Ocean University The Institute of Atmospheric Physics, CAS Chinese Academy of Meteorological Sciences, CMA Lanzhou University Jiangsu Institute

  • f Meteorological

Sciences Institute of Atmospheric Environment, CMA, Shenyang National Satellite Meteorological Centre CMA Meteorological Observation Centre

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n Get a reanalysis dataset which have better quality for meso

  • scale weather system simulation and regional climate analysis.

n Develop a reanalysis system which can assimilate the density

  • bservation in China as much as possible
  • Radiosonde
  • Weather Radar
  • Surface observation
  • Satellite
  • GPS/Met
  • …..

n Regional 10 years（2008-2018）reanalysis dataset n Horizontal resolution: 12km for East Asia, 3km for field study areas such as the Tibeten Plateau and the South China.

Goals

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n Observation data collection and quality control n Numerical model localization and data assimilation technique optimization n Reanalysis system development

n Regional analysis for the East Asia

n Verification and application n Data management and share

Framework of EARR

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(-10.31, 61.68) (-10.31, 138.31) (50.87, -162.51) (50.87, 2.51)

Model Domain Weather Systems in East Asia Model Domain

GSI+WRF

12km

  • Horizontal resolution: 12km
  • Vertical levModel top: 10mb
  • Vertical levels: 70
  • Microphysics: Thompson
  • Cumulus Parameterization: KF
  • Long radiation：RRTM
  • Short radiation：Dudhia
  • Boundary layer：YSU
  • Land model：Noah-MP
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Observation data

Data collection & quality control

Station (facility)

  • Num. Station (facility) Num.

National surface

  • bservation stations

Reference station 2423 Wind profile radar 69 National unmanned automatic meteorological station 57405 GNSS/MET station 950 L-band sounding system 120 Automatic soil moisture station 2075 Doppler weather radar 181 Thunder and lightning

  • bservation station

478 Digital weather radar 52 Wind energy

  • bservation station 345

buoy 40 Solar radiation

  • bservation station 100

By Dec. 31st, 2015

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  • stations

AWSs

57405 local stations cover 96.01% villages and towns.

Population density

  • f China

Testing continues Nudging method

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AMDAR

GNSS/MET Stations

Type Amount L-band Radiosonde 120(86) Wind Profiler 69 Received AMDAR In China per day Received AMDAR By GTS per day 50000 10000 GNSS/MET Station 950

Radiosonde (120) Wind Profiler (69)

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13 Temp CMA ：73 levels Gdas ： 43 levels U and V CMA： 51 levels Gdas ： 48 levels Vertical resolution of radiosonde CMA-T GDAS-T+10

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中国气象局综合观测司

Radar Observation Coverage （3Km Above Ground）

Type Amount Doppler Weather Radar S-band C-band 181 103 78 Digital Weather Radar Mobile Weather Radar 52 45

Chen F., Xudong Liang*, 2017: Application of IVAP-based

  • bservation operator in

radar radial velocity assimilation: the case of Typhoon Fitow, Mon. Wea. Rev., 145，4187-4203

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Model & DA optimization

Radiosonde +6 Soil moisture/temperature station: 46 Mobile Radar : IOP

The Third Tibetan Plateau Atmospheric Scientific Experiment （TIPEX—III）

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Southern China Monsoon Rainfall Experiment （SCMREX）

(RDP project of HiWeather)

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Downscaling experiments

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18 Global reanalysis（ERA-interim， CRA） East Asia Regional Reanalysis

2005 2018

2015-2018 Set up the reanalysis system( Downscaling) 2015-2018 Conventional observations (Surface, Sounding…) 2020 Radar, Wind Profiler 2021 Version 2 (12+3km) 2019 Aircraft data, GPS/Met; Version 1 (12km)

Schedule

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19 International Symposium on Regional Reanalysis, 17-19 Jul. 2018, Bonn

Contact: liangxd@cma.gov.cn