Yong Wang

Wang, Yong

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Hrvatsko meteoroloπko druπtvoCroatian Meteorological SocietyHRVATSKI METEOROLO©KI »ASOPISCROATIAN METEOROLOGICAL JOURNAL50 Hrv. meteor. Ëasopis Vol. 50 p. 1-144 ZAGREB 2015»asopis je izdan povodom 20. godišnjice ALADIN projekta u HrvatskojHMC-50.qxp_HMC-50  10/03/16  09:49  Page 111Hrvatski meteoroloπki Ëasopis  Croatian Meteorological Journal, 50, 2015CROATIAN CONTRIBUTION TO REGIONAL COOPERATION FOR LIMITED AREA MODELLING CENTRAL EUROPE (RC LACE) Modeliranje na ograničenom području u Središnjoj Europi: doprinos hrvatskih znanstvenikaYONG WANGLACE Program ManagerZentralanstalt für Meteorologie und Geodynamik,Hohe Warte 38, A-1190 Vienna, Austriawang@zamg.ac.atRC LACE (Regional cooperation for limited area modelling Central Europe) is a Central Euro-pean collaborative program which pursues extensive scientific and technical collaboration in thefield of very high resolution operational numerical weather prediction (NWP) for weather re-search, forecast and application. The LACE consortium (http://www.rclace.eu) consists of the Na-tional Meteorological and Hydrological Services of Austria (Central Institute for Meteorologyund Geodynamics), Croatia (Meteorological and Hydrological Service), Czech Republic (CzechHydrometeorological Institute), Hungary (Meteorological Service of Hungary),  Romania (Na-tional Meteorological Administration), Slovakia (Slovak Hydrometeorological Institute) andSlovenia (Environmental Agency of the Republic of Slovenia, Meteorological Office). The princi-ple objectives of LACE are to develop and maintain a state of the art operational short-rangeNWP system by all the consortium members, to conduct scientific and technical research directedtowards improving the quality of forecasts, to share the human resources on NWP research and toexchange observation data for NWP operation. All the LACE members are also the member ofALADIN (Aire Limitée Adaptation dynamique Développement InterNational) program andLACE is in close cooperation with HIRALM (HIgh Resolution Limited Area Model) program.LACE was initiated in the beginning of 1990s, as the profound political changes in Europe in thelate 1980s opened up new communication channels and brought great opportunities for co-opera-tion in the Central European area. These opportunities for cooperation were recognized verysoon by most Central European meteorological and hydrological services in the area of opera-tional NWP which has always been extremely important for high impact weather warning and fornumerous applications. They decided to work together in developing ALADIN NWP system invery close cooperation and coordination with Météo-France. It is essential that every nationalweather service runs their own NWP system operationally and provides the warning informationtailored to end user’s specific needs. In Central Europe, the reality is that the most countries aresmall and some of them are developing countries, they cannot have sufficient human resourcesand technical capacity to develop a state of the art operational NWP system by them alone.In the last 25 years LACE has worked closely together with ALADIN and HIRLAM partners, theLACE members are running a state of the art NWP system and data assimilation operationally athigh resolution from 2.5 - 5.0 km. LACE has largely contributed to the development of ALADINNWP models (Bubnová et al. 1995), ALARO (http://www.rclace.eu/?page=74) and AROME(Applications of Research to Operations at Mesoscale, Seity et al. 2011). They have shared theirhuman resources on research and development of ALADIN-LAEF (Limited Area EnsembleForecasting, Wang et al. 2010, 2012), and exchanged their data in real time through observationpreprocessing for LACE (OPLACE) for data assimilation and verification. Croatian Meteorological and Hydrological Service (DHMZ) is one of the LACE founding mem-ber and an active part of LACE from the beginning. DHMZ has developed strong scientific andtechnical collaboration with LACE and contributed to its development with high dedication.DHMZ involved much in LACE leadership. Dijana Klarić had been program manager from 1999HMC-50.qxp_HMC-50  10/03/16  09:49  Page 1112 Hrvatski meteoroloπki Ëasopis  Croatian Meteorological Journal, 50, 2015to 2012. She involved Stjepan Ivatek-Šahdan in LACE management as data manager from 2003 to2004 and Tomislav Kovačić as area leader for data assimilation from 2010 to 2012.DHMZ has participated many LACE research and development actions. Together with otherLACE  colleagues, Klarić and Ivatek-Šahdan developed ALADIN spectral and surface blendingmethod (Brozkova, Klarić, Ivatek-Šahdan at al. 2001) for the limited area model initialization thathas entered to LACE operative configuration since the 2000. It has been one of the main compo-nent of data assimilation set up at some LACE countries. The blending has even become the back-bone of the initial perturbation method for limited area model ensemble prediction system AL-ADIN-LAEF in its operational configuration (Wang et al. 2014). Furthermore, Ivatek-Šahdanhelped to set up ALADIN-LAEF (Wang et al. including Ivatek-Šahdan 2011), Kalin worked onALADIN common verification client-server application for synoptic scale verification at ARSO(Ljubljana), Kovačić implemented DDH (Diagnostics en Domaines Horizontaux) tool forALARO and AROME.There were many other numerous contributions from DHMZ. Some of them are: use of high-res-olution dynamical adaptation in operational suite and research impact studies (Ivatek-Šahdan andTudor 2004); tests of sub-grid scale orography representation, horizontal diffusion, radiation andcloudiness parameterization of ALADIN (Drvar et al. 2005, Tudor et al. 2005, Tudor 2010); flux-conservative thermodynamic equations in a mass-weighted framework (Catray et al. including Tu-dor 2007); diagnossis and tunning of the background error statistics in a variational data assimila-tion system (Boloni and Horvath 2010); alternative formulations for incorporating Lateral Bound-ary Data into Limited-Area Models (Tudor and Termonia 2010); investigation on numerical insta-bility and stiffness in the ALADIN parameterization (Tudor 2013).Further, DHMZ colleagues have conducted many case and impact studies on the performance ofALADIN, on ALADIN simulation on different weather systems, e.g. flash flood, bora, and overmountains and ocean (Ivančan-Picek and Jurčec 2002, 2003; Ivančan-Picek et al. 2003; Horvathand Ivančan-Picek 2003; Vukičević et al. 2005; Ivančan-Picek et al. 2005; Beg Paklar et al. 2005;Ivatek-Šahdan and Ivančan-Picek 2005, 2006; Kuzmić et al. 2006; Ivančan-Picek et al. 2006;Kozarić and Ivančan-Picek 2006; Bencetić et al. 2009; Martin et al. 2009; Rixen et al. 2009; Van-denbulcke et al. 2009; Vilibić et al. 2009; Horvath et al. 2009; Tudor and Ivatek-Šahdan 2010; Hor-vath et al. 2011; Stiperski et al. 2011; Renko et al. 2012; Mazzocco Drvar et al. 2012; Tudor et al.2013; Mihanović et al. 2013; Janeković et al. 2014; Kalin et al. 2015)The strong involvement and contribution of DHMZ demonstrates that LACE is a successful ex-ample of regional collaboration among small and medium national weather services on extensivescientific research and technical development in field of high resolution operational NWP. Coop-eration on common research and development actions, active contribution to the model develop-ment and sharing resources and applications are the key factors for the success of LACE, whichmakes all the partners beneficial from the program.ACKNOWLEDGMENTSThe author gratefully acknowledges all the LACE colleagues from Austria, Croatia, Czech Re-public, Hungary, Romania, Slovakia and Slovenia for their contribution to the LACE program.REFERENCESBeg Paklar, G., A. Bajić, V. Dadić, B. Grbec, M. Orlić, 2005: Bora-induced currents correspon-ding to different synoptic conditions above the Adriatic, Annales Geophysicae, 23, 1083-1091.Bencetić Klaić, Z., Z. Pasarić, M. Tudor, 2009: On the interplay between sea-land breezes andEtesian winds over the Adriatic. Journal of Marine Systems, 78, 101-118.HMC-50.qxp_HMC-50  10/03/16  09:49  Page 1213Hrvatski meteoroloπki Ëasopis  Croatian Meteorological Journal, 50, 2015Boloni G. and K. 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Ma, W. Tian, and F. Weidle, 2014: A New Method for Gen-erating Initial Condition Perturbations in a Regional Ensemble Prediction System: Blending.Mon. Wea. Rev., 142, 2043-2059.HMC-50.qxp_HMC-50  10/03/16  09:49  Page 15HMC-50.qxp_HMC-50  10/03/16  09:49  Page 16

CROATIAN CONTRIBUTION TO REGIONAL COOPERATION FOR LIMITED AREA MODELLING CENTRAL EUROPE (RC LACE)

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