The 8 th GAME International Science Panel Meeting (Thailand, November, 2003) Dr. C. H. Cho Meteorological Research Institute, KMA Speaker: B. J. Sohn, SEES, Seoul National University, Korea Present Status of KEOP Activities in Korea

What is KEOP ?

KEOP Objectives and Contents  Produce intensive observation data to clarify the 3- dimensional structure of heavy rainfall system in summer associated with typhoon or Changma (Rainy Season in Korea)  Enhance our understanding of heavy rainfall system in summer and improve its model prediction from the analysis and application studies of intensive observation data  Intensive field-based observation of severe weather in summer associated with typhoon and Changma  Long-term monitoring of surface fluxes for improvement of physical processes between land surface and atmosphere  Analysis and application of intensive observation data for elucidating the formation and development mechanism of heavy rainfall system  Establishment of observation network for real-time monitoring system of severe weather in the southwestern part of the Korean peninsula  Performance of fundamental research for designing optical observation network  Operation of KEOP data center Objectives Contents

1. Severe Weather Phenomena 3. Understanding of Structure of Severe Weather 2. Intensive Observation Planetary- scale Meso-α scale Synoptic-scale Meso-β scale 4. Improvement of Prediction Skill for Severe Weather KEOP Strategy

Establishment of NCIO and Its Application - Haenam & Muan Site -

Climatological Feature Climatological Feature Occurrence Frequency of Heavy Rainfall  Production of comprehensive observation data for analyzing multi- scale interaction among various atmospheric scales of severe weather system in summer  Cost-effective maintenance and management of advanced meteorological equipments Background Annual PPTN(mm) Max. Depth of Snowfall(cm) X-Band Doppler Weather Radar National Center for Intensive Observation of Severe Weathers National Center of Intensive Observation for Severe Weathers(NCIO)

Characteristics of Installed Meteorological Instruments Production of observation data with high temporal and spatial resolution for the monitoring, analysis and prediction of severe weather Production of observation data for improvement of the land-surface hydrological and cloud-precipitation processes in cloud physics and numerical model. Intensive Observation Period Micro Rain Radar Producing vertical profiles of rain rate, LWC and drop size distribution Flux Tower Producing sensible, latent, and radiative fluses over land surface Optical Rain Gauge Producing information to distinguish between rain, snow, intensity of precipitation Autosonde Producing continuous upper air observation data Boundary Layer Radar Producing one-minute profile of vertical and horizontal winds

AUTOSONDE

WIND PROFILER Antenna System Operating Shelter Signal Processing System

SRM9 modem FTP connect Local PC 20 m flux tower KoFlux web site FTP connect Flux Data Management System

Schematic Map of Flux Observing System 0.07 m 0.1 m Wind Speed & Direction Gressland 1 m 19.3 m 20.8 m Net radiometer (CNR1) 0.15 m Water Temp. Data logger (CR5000) 3D-Sonic Anemometer (CSAT3) Evaporation Pan Evaporation Open path infrared CO 2 /H 2 O analyzer (LI7500) : Soil Temperature ×2 : Soil Heat Flux ×2 : Soil Moisture (TDR) ×2 Temperature & Humidity meter 1.5 m site1 site2 Air Temperature & Humidity

International Collaboration

Linkage with International Programs

36 CEOP Reference Sites NCIO (6th CEOP Ref. Site) NCIO (6th CEOP Ref. Site)

Investigate MCSs and disturbances in the Changma Front Using Intensive Observation Period(IOP) Data with High Temporal and Spatial Resolution → Analysis of the Structure of the Changma Front and Genesis and Development of Attendant MCS → Improved Understanding and Prediction of Changma 26 June – 9 July, 2003(14 Days) SW Korean Peninsula Objectives Period Region Upper-Air : Haenam, Huekasando, Kwangju, Gosan Radar : Jindo(S-band), Muan(X-band) WPR : Haenam ORG, MRR, Flux : Haenam Network  KEOP-2003 Network KEOP-2003

Future Plan

2301LST 2325LST 0001LST 0025LST 0113LST 0149LST 0225LST 0301LST 0325LST 0425LST 0501LST 0525LST Conceptual Model of MCC Genesis and Development (KEOP-2003) L

SUMMARY Present Status - Successful Installation of WPR and Its Real-Time Operation for Monitoring Mesoscale Severe Weather Systems - Performance of Dual Doppler Radar Analysis by Using Muan X-band and Jindo S-band Doppler Radars - Exchange of IOP Data between KEOP-2003 and X-Baiu03 Future Plan - Conceptual Model Development of Severe Weathers - Analysis and Prediction Sensitivity Experiment of IOP Data