jae-myun shim([email protected]) meteorological satellite division

Jae-Myun Shim([email protected])

Meteorological Satellite Division

Korea Meteorological Administration

Current Status of Current Status of Data Exchange and Data Exchange and

Application for ATOVS in KMAApplication for ATOVS in KMA

APSDEU-7/ 20-22 September 2006/ NOAA

APSDEU-7/ 20-22 September 2006/ NOAA2

ContentsContents

Facilities for Satellite Data Acquisition Applications for Weather and Environmental Analysis Geostationary Satellite Polar Orbital Satellite Product Service

Satellite Data Assimilation Status and Plan for Data Exchange of ATOVS


Milestones of Satellite Service in KMAMilestones of Satellite Service in KMA

1 Dec. 1970: Install APT (Automatic Picture Transmission) system to acquire the satellite images of ESSA-8, and NOAA-114 Jul. 1977: GMS-1(Japan) was successfully launched (140E)1 Apr. 1979 : Acquired and used GMS-1 image (LR fax image)Up to 2004 : GMS, NOAA, FY, GOES series data had been acquired and used operationally for weather forecast in KMAMDUS : MESDAS-I(1989), MESDAS-II(1998) 2001-2004 : Develop and install receiving system for EOS satellite like Terra and Aqua for Earth and Environment monitoring2005 : Receive and use FY-2C data, MTSAT-1R, and NOAA-18, successfully2008 : COMS will be launched


Seosan

Flow of Satellite ServiceFlow of Satellite Service

Foreign Satellite data Service Center (eg : NASA)

MTSAT, FY, Meteosat, NOAA, Terra, Aqua etc.

Munsan Raw Data

Seoul H.Q. FTP

MESDAS-II (Meteorological Satellite Data Reception/Analysis System) Based on TeraScan System ACAP(Aqua Catalogue and Product) Special Receiving System

Intranet, Exclusive Line

Forecast Office

Numerical prediction model

Government Organization

Commercial Weather Sector

Public

Research Institute / University

Internet, Offline Service


Seosan Weather Station :Seosan Weather Station : - NOAA-12,15,18 - FY-1D

Seoul (KMA) :Seoul (KMA) : - NOAA-12,17,18 - MTSAT-1R, FY-2C

Munsan Weather Station :Munsan Weather Station : - METEOSAT-5 - Terra, Aqua


Antenna SystemAntenna SystemGeostationary (MTSAT-1R:MDUS) Diameter : 3.7m Band : L-Band (SEOUL)

Polar Orbit (NOAA Series) Diameter : 1.5 m (Radom 1.8m) Band : L-band (SEOUL)

Polar Orbit (NOAA Series) Diameter : 1.5 m (Radom 1.8m) Band : L-band (SUSAN)

EOS (TERRA, AQUA) Diameter : 3.6m(Radom 4.2m) Band : X-Band (MUNSAN)


Operational Satellite and ProductsOperational Satellite and ProductsSatellite Imaginary Products Derived Products

GeostationarySatellite

MTSAT-1RFY-2C

Meteosat-5

Split IR, VIS, WVComposite Image

Overlay Image with NWP output

CT, CP, CH

CMV, RRSST, OLRDust, Fog

Polar Orbit Satellite

NOAA(12,15,17,18)

FY-1D

VIS, IR, Near IRComposite Image

Overlay Image with NWP output

Vertical Profiles(T, Td, Wind, Total

Ozone)SST, Dust, Fog

EOSSatellite

Terra, AquaQuikSCATSeaWiFS

RGB Composite Image

Sea wind

Fire, DustSST, Sea wind

RR


ContentsContents




Geostationary SatelliteGeostationary SatelliteSince July 2005, MTSAT-1R data have been operationally used for weather forecast.


Cloud Analysis using MTSAT-1RCloud Analysis using MTSAT-1R

Atmospheric Motion Vector Cloud Top Temperature


Combined Image of Geostationary Satellite Combined Image of Geostationary Satellite

MTSAT-1R and Meteosat-5 (per one hour)


ContentsContents




Polar Orbiting SatellitesPolar Orbiting SatellitesCurrent Status

KMA has three different sites for receiving data from polar-orbiting satellites.Seoul (KMA) : NOAA-12, 17, 18Seosan (100 km southwest from Seoul) : NOAA-15, FY-1DMunsan (50 km northwest from Seoul) : Terra, Aqua

On-goingSince July 2004, the raw pass data of FY-1D are directly received.IR (Ch 4) images of FY-1D have been produced for forecast since October 2004.We are testing the L1B data to produce derived products from FY-1D.

Future PlanKMA has the plan to receive data from the polar orbiting satellites of next generation.METOP (2007), NPP (2009), NPOESS (2012?-)


AQUA MODIS NOAA AVHRR

Polar Orbiting Satellites ImagesPolar Orbiting Satellites ImagesImages

Providing images of VIS, IR in the area of Asia and Korea.Providing improved images using high-resolving spectral observation.Providing true color composite images for detect fire and Asian dust.


NOAA-AVHRR Imaginary ProductsNOAA-AVHRR Imaginary Products

VIS(ch1) IR(ch4)

Near IR(ch2)

Composite Image VIS & IR

Enhanced IR


( TBB, SW, SST Composite Image Display)2006. 9.16 Typhoon SHANSHAN

Typhoon analysis system Typhoon analysis system


Weekly Composite of AVHRR Weekly Composite of MTSAT-1R

Products-SSTProducts-SST

Both MTSAT-1R and NOAA data are used to derive the SST field.Weekly composite data are provided for SST field.High resolution SST field shows several benefits in the NWP model.


Method KMA uses NIR (3.9 m) to detect fog. Dual Channel Difference (DCD) Method is used to detect fog.

NOAA IR NOAA Near IR

FOG

FOG

Products-Fog detectionProducts-Fog detection


Retrieval Processes of ATOVSRetrieval Processes of ATOVS

Retrieval ProgramAAPP (ATOVS and AVHRR Processing Package, v5.2, NWP SAF) : Produce L1d data IAPP (International ATOVS Processing Package, v2.1, SSEC) : Retrieve L2 data

Retrieved DataT, Td, WV, GPH, wind, Cloud, TPW, rain rate, total ozone, Tbb (HIRS, AMSU) etc.


Coverage of available received Coverage of available received data(2001.8)data(2001.8)


850hPa (T-Td) 200hPa (wind speed)

Retrieved Products of ATOVSRetrieved Products of ATOVS Products

Data : T, Td, Wind, GPH Layer : 1000, 950, 920, 850, 700, 500, 400, 300, 250, 200, 100 hPa (11 layers)


Verification of ATOVS (T, Td)Verification of ATOVS (T, Td) Each Profile

Sonde data at three points over Korea are used for the comparison of each profile. Providing the characteristics of ATOVS for each weather case.

Large difference of ATOVS in the case of inversion layer.


Temperature profileBias = 0.5CRMSE = 1.5C

Dew point temperature profileBias = 10CRMSE = 15CMaximum at around 300hPa

Verification of ATOVS (T, Td) Weekly Average

Bias and RMSE for every week at three points are produced and displayed in intranet. Providing more systematic errors of ATOVS.


ContentsContents




Products service through IntranetProducts service through Intranet


Products service through InternetProducts service through Internetwww.kma.go.kr / www.weather.go.kr

http://www.kma.go.kr/

http://www.weather.go.kr/


Satellite Information Service SystemSatellite Information Service System http:siss.kma.go.kr









ContentsContents


Satellite Data Assimilation in KMASatellite Data Assimilation in KMAOperation MTSAT-1R TBB bogus data Direct use of ATOVS level 1D data in 3dVar SATOB (BUFR) and SATEM data QuikScat data assimilation using MRF PBL operator in the glo

bal and regional 3dVar

Semi-operation Apply FGAT with ATOVS data MODIS polar wind SSM/I data Unified 3dVar with ATOVS level 1C data GPS Radio Occultation data assimilation

※FGAT : First Guess at Appropriate Time


ATOVS DATA NUMBERSATOVS DATA NUMBERS

• MODEL: GDAPS (Global Data Analysis and Prediction System )

- T426L40 (0.28125°)

• ANALYSIS : 3DVAR• CASE : 2005.10.04.00 UTC ~ 10.14.12 UTC

( 6 hourly cycle, 10 days forecast)DATA NUMBERS (ATOVS)

0

1000

2000

3000

4000

5000

ATOVS

DA

TA N

UM

BE

R

FGAT

CTRL

9 % ↑


Number of ATOVS (2005.10.04.)

CTRL FGAT


500hPa500hPa GPH RMSE GPH RMSE

2005-6 DJF2005 JJA


Future Data Assimilation PlanFuture Data Assimilation Plan

Use direct readout ATOVS data Operation of 1dVar for the SSM/I radiance data to update surface windReplace MTSAT-1R bogus profile to direct assimilation of water vapor channel of MTSAT 1ROperation of the unified 3dVar for global and regional Data Assimilation with adaptive bias correction method


ContentsContents Facilities for Satellite Data Acquisition Applications for Weather and Environmental Analysis Geostationary Satellite Polar Orbital Satellite Product Service



Background and historyBackground and historyIt was discussed at APSDEU-6 that ATOVS data would be exchange in Asia-Pacific area.It was decided that Tokyo and Beijing would be the intra-regional data centers.First exchange test within A-P area would have been finished till the end of 2005.KMA has started the detailed discussion to implant RARS system with JMA since May 2006.Format and telecommunication method for ATOVS data exchange was finalized according to the discussion with JMA.KMA prepared the encoding and decoding program for ATOVS data during June 2006.KMA debugged errors in BUFR data to be ready for data exchange from July to early August 2006.KMA finished to produce ATOVS BUFR data to be exchanged with JMA by August 2006


Current Status and Future PlanCurrent Status and Future PlanData to be exchanged : ATOVS AAPP L1C (HIRS, AMSU-A, AMSU-B)Data format : Compressed BUFRTelecommunication : GTS between Seoul and TokyoData from Seoul to Tokyo : 1 HRPT station (Seoul)Data from Tokyo to Seoul : 9 HRPT station (2 Japan, 3 China, 4 Australia)First test exchange succeeded on 15 September between Seoul and Tokyo.Data exchange for routine operation would be performed since 20 September.Exchanged ATOVS data will be utilized in regional NWP model


Thank youThank you감사합니다감사합니다

jae-myun shim([email protected]) meteorological satellite division

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