CURRENT DEVELOPMENTS OF LAPS INGEST PROCESSES AT METEOCAT Area of Applied Research and Modelling – SMC Jordi More & Abdel Sairouni.

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Presentation transcript:

CURRENT DEVELOPMENTS OF LAPS INGEST PROCESSES AT METEOCAT Area of Applied Research and Modelling – SMC Jordi More & Abdel Sairouni

Boulder, Colorado, October 2010 Introducció INTRODUCTION METEOCAT: METEOROLOGICAL SERVICE OF CATALONIA BARCELONA MEDITERRANEAN SEA CATALONIA: ~ km 2 ~ population of 7 milion

Boulder, Colorado, October 2010 Introducció LAPS CONFIGURATION Ingested data: LAPS SYSTEM MM5 METAR RADAR MSG AWS RAOB

Boulder, Colorado, October 2010 Introducció LAPS CONFIGURATION LAPS SYSTEM: Version: LAPS (with some modifications) Domains: 36 km & 12 km (22 levels) Platform: SGI Altix 350 with 24 processors, IFORT compiler Background: MM5 coarse (36 km, 26 levels) MM5 nested (12 km, 30 levels) DX = 36 km DX = 12 km

Boulder, Colorado, October 2010 Background model (LFMPOST.EXE): Modified interface for MM5 assimilation. Changes in the MSLP calculation using routines of MM5 (not included in LAPS versions). Surface (METARS, AWS) and Upper air data (RAOB ): New routines to process observational data and write LSO and SND files. Radar data (IRIS FORMAT): New interface for IRIS Doppler radar assimilation (reflectivity and radial velocity) using RSL (NASA TRMM). Data from 4 Radar (C band) available: LAPS MODIFICATIONS: INGEST

Boulder, Colorado, October 2010 LAPS MODIFICATIONS: INGEST SATELITE DATA (MSG 9): LAPS was conceived to use satellite data: GOES12 MSG (Meteosat Second Generation) requires major changes because: Different channels in both satellites. Different resolution at sub-satellite point and the zenith angle. Satellite data obtained from MSG (five channels are obtained): Visible, IR(12 micron), IR(3.9 micron), IR(10.8 micron) and Water Vapour(6.2 micron)

Boulder, Colorado, October 2010 LAPS MODIFICATIONS: CLOUD CLOUD ANALYSIS: Modification routines to process satellite and radar: Cloud top Original LAPS Modified LAPS Terrain T(klaps-3) T(klaps) T(klaps-1) T(klaps-2) kterrain What if Tsat < T(klaps)? frac=T(klaps) – T(klaps-1)/ Tsat – T(klaps) arg=H(klaps-1)+frac*(H(klaps)-H(klaps-1) Tsat Z(klaps) Z(klaps-1) Z(klaps-2) Z(klaps-3)

Boulder, Colorado, October 2010 CLOUD ANALYSIS: 09/13/2006 (00UT) Meteosat IR (10.8u)Meteosat IR (3.9u)Radar Ref. (700 hPa) CLOUD COVERCLOUD BASECLOUD TOP OBS. LAPS

Boulder, Colorado, October 2010 LAPS MODIFICATIONS: CLOUD CLOUD ANALYSIS EXAMPLE: Cloud top Original LAPS Modified LAPS 1.e-30

Boulder, Colorado, October 2010 CLOUD ANALYSIS: 09/13/2006 (00UT) Meteosat IR (10.8u)Meteosat IR (3.9u) CLOUD COVERCLOUD BASECLOUD TOP OBS. MOD. C.T. Radar Ref. (700 hPa)

Cloud base_init= cloud_top m Boulder, Colorado, October 2010 LAPS MODIFICATIONS: CLOUD CLOUD ANALYSIS: Modification routines to process satellite and radar: Cloud base Original LAPS Modified LAPS Cloud top Cloud base init Terrain 1500 m Terrain Cloud top LCL base Cloud base_init = f(cloud top,LCL)

Boulder, Colorado, October 2010 CLOUD ANALYSIS: 09/13/2006 (00UT) Meteosat IR (10.8u)Meteosat IR (3.9u) CLOUD COVERCLOUD BASECLOUD TOP OBS. MOD. C.T. & C.B. Radar Ref. (700 hPa)

Boulder, Colorado, October 2010 LAPS MODIFICATIONS: WIND WIND ANALYSIS: Minor modification in multiwind_noZ.f for radar wind computation (only when multi-radar n=4) RADAR WIND OBSERVATIONS RADAR POSITION 850 hPa700 hPa500 hPa

Boulder, Colorado, October 2010 WIND ANALYSIS: 03/03/2010 (12UT) 850 hPa 500 hPa CONV. OBS.+ RAD. WIND+ BALANCE

Boulder, Colorado, October 2010 WIND ANALYSIS: 03/03/2010 (12UT) ZONAL WIND COMPONENT (m/s) MERIDIONAL WIND COMPONENT (m/s) MERIDIONAL WIND COMPONENT (m/s) VERIFICATION: BCN SOUNDING WITH BCN SOUND WITHOUT ZONAL WIND COMPONENT (m/s)

Boulder, Colorado, October 2010 OPERATIONAL LAPS Observational data operationally assimilated: - MSG (1)(1)lvd - RADAR (4)(4)vrz, v01, v02, v03, v04 - METAR (~35)(~400)lso - RAOB (~5)(~50)snd - AWS (~200)lso - NWPMM5-12kmMM5-36kmlga, lgb Coupling LAPS with MM5 procedures: WARM:update every 3 hours (nudging) HOT:update every 1 hour LAPS 12 km # obs LAPS 36 km # obs LAPS intermediate files

Boulder, Colorado, October 2010 OPERATIONAL LAPS LAPS-MM5 36 km (BC) LAPS-MM5 12 km (3h-Nudging) Nudging LAPS LAPS LAPS-MM5 36 km (BC) LAPS-MM5 12 km (3h-Nudging) LAPS-MM5 12 km WARM HOT

Boulder, Colorado, October 2010 LAPS CURRENT MODIFICATIONS Impact of LAPS to improve short-term QPF : Case study 13 September 2006 OBS. RADARMM5 (control)MM5-LAPS (3h-nudging) Z Z OPERATIONAL LAPS

Boulder, Colorado, October 2010 LAPS CURRENT MODIFICATIONSOPERATIONAL LAPS MM5 (control) HOT (MM5-LAPS) WARM (3h Nudge) MM5 (control) HOT (MM5-LAPS) WARM (3h Nudge) Impact of LAPS to improve short-term QPF : Case study 13 September 2006

Boulder, Colorado, October 2010 CONCLUSIONS & FUTURE WORK Summary & Future work: Modifications in cloud top and cloud base calculation improve the quality of cloud cover and HUMIDITY analysis. A necessary effort is needed to improve the CLOUD analysis (cloud base). LAPS system coupled with MM5 produce better results in QPF during the first 6 hours. Radial velocity wind from radar data sometimes can deteriorate the WIND analysis. Some improvements are needed. LAPS upgrades are difficult due to the modifications required to ingest MSG satellite data.

Boulder, Colorado, October 2010 CONCLUSIONS & FUTURE WORK Simulations in testing phase: Increase resolution in LAPS domain (4 km). Coupling LAPS with WRF. Test ECMWF as a background in the LAPS system. Quality control in radar wind: long-term verification. Study LAPS surface analysis when using AWS local network. On-line verification of QPF using LAPS-MM5 system (fuzzy verificaction).

Boulder, Colorado, October 2010 THE END THANK YOU !