FDP assistant surroundings building finished

August 3, 2006

　　Complying with the requirement of the WWRP/SSC meeting, B08FDP is going to be tested by overseas system from August 1 to 20 this year. Therefore Beijing Meteorological Bureau has provided data surroundings in keeping with the international practice.
　　The data assistant surrounding of B08FDP means the collection of information, process, storage, management and running platform to whole system. It includes live collection to probing data and processing them, format standardization, and pattern of storage as well as unitary interface to log on. Meanwhile this exploitation is to use net-communication system for the collection of probing data and guidance products. And also applies in analysis of data, high-performance service system for mode-running procedure, furthermore it can be used a storage system for various probing data and warning products of forecasting.
　　According to the need of computers and data overseas, B08FDP net surroundings has been built. Its news driver's style actualizes local probing data. To use open source code realizes data collection and treatment and use international common data format in order to standardize and unify the local probing data patterns.

. REPORT OF THE EIGHTH SESSION OF THE SCIENCE STEERING COMMITTEE FOR THE WWRP

(CMA, Kunming , Yunnan , China , 26-30 October 2005)

Xiaoding Yu introduced the B08 FDP and Jianjie Wang introduced the B08 RDP (appendix L for the progress report and appendix M for the revised proposals according to WWRP/SSC 2004 recommandations). The committee congratulated the FDP team as well as the RDP team for the progresses achieved since last WWRP/SSC session.

The committee recommended to the B08 FDP that the extra observations (extra R/S, wind profilers …) to be inserted on the GTS in order for the global NWP models to use these data in their data assimilation and thus to enhance their forecasting capability.

The committee noted the parallel development of the MAP D-Phase, which has very similar objectives to the BO8 RDP and urged the two projects to establish a strong cooperation in order to share data formats and software. This will pave the way to widen the scope of TIGGE to mesoscale ensembles.

The committee further stressed the importance of identifying end-users as part of the impact studies. An international impact person should be identified and included in the scientific committee (WWRP/SSC can provide assistance for this).

An annual steering committee meeting is appropriate and the WWRP/SSC expects a progress report at its 2006 session.

Progress Report on B08FDP

Xiaoding Yu

China Meteoeological Administration

Since B08FDP proposal was approved at the 7th Session of WMO/WWRP/SSC held in Boulder, U.S, last October. Significant progress has been made on B08FDP. First of all, an international workshop on B08FDP was conducted in March this year in Beijing, China. The main goals of this workshop was to decide the participating nowcast systems for B08FDP, and revise the B08FDP proposal. The participating systems for B08FDP decided during this workshop are Beijing-ANC from Beijing Meteorological Bureau, China, CARDS from Environment Canada, GRAPES from China Academy of Meteorological Research, NIWOT from NCAR, U.S., SWIRLS from Hong Kong Observatory, STEPS and TIFS from Australian Meteorological Bureau. During the workshop, it was decided to set up a science steering committee for B08FDP, this committee is co-chaired by Dr. Tom Keenan from Australian Meteorological Bureau and Dr. Xiaoding Yu from China Meteorological Administration. The revised B08FDP proposal has been submit to WMO/WWRP/SSC this July.
Secondly, a coordination committee for B08FDP has been established, the head of this committee is Mr. Pu Xie, the director general of Beijing Meteorological Bureau. Under this committee, there are two important local support groups, one is the technique support group, another is the logistical support group. The responsibilities of the technique support group are : 1) provide the observational data, NWP data and necessary hardware conditions to participating groups; 2) provide technique assistance to participating groups and keep the participating systems running when the corresponding group is not in Beijing; 3) organize the training course for local weather forecasters. A workshop has just been held to discuss the proper data format for input and output of B08FDP participating systems.
The teams for verification and social and economics impact assessment have been set up separately. They have worked out the implementation plan for verification and SEIA, respectively. SEIA team has made an initial survey, involving 5000 samples.
A B08FDP/SSC meeting was held in Meteo France’s Intentional Conference Center just after the WMO Symposium on Nowcasting on 9 September this year. During this meeting, the verification and SEIA implementation plan were discussed. The B08FDP SSC also discussed the plan and critical issues of 2006 B08FDP test experiment. It was decided that a test experiment would be conducted in Beijing from 1st to 31st August 2006. Each participating systems should be tuned to adapt to Beijing’s local conditions before the end of July 2006. After the test experiment, a review workshop will be held at the end of August, to discuss the issues and problems appeared during the test expexperiment.

TOP

Brief Report on the Progress of the B08RDP
China Meteorological Administration, Beijing, China
Oct. 2005

1. Revision to the scientific and implementing plans of the B08RDP
? The draft implementing plan of the B08RDP has been revised based on the discussion of participants of 1st Workshop of WWRP B08RDP held in March of 2005 in Beijing, and the comments from the B08RDP-SSC members during April to July of 2005. A revised scientific plan of the B08RDP is now available.

2. Confirmation of the international partnership and participating systems of the B08RDP
? The international partnership for the B08RDP has been finalized. A total of 7 systems will participate in the B08RDP, including: NCEP’s new version SREF (based on the WRF model with both NMM and ARW dynamic cores), NCAR’s WRF system with ARW dynamic core, MSC’s regional EP system, JMA’s global/meso-scale EP system, UK Met.-Office’s global/regional EP system, CMA’s HLAFS (WRF based)/GRAPES meso-scale EP systems, and Météo-France and ZAMG’s joint regional EP system (Météo-France and the Austrian weather service ZAMG will be acting as one single partner in the project).
? The members of ITeST (International Technique Support Team) of the B08RDP have been determined by the B08RDP-SSC (see appendix).
? Dr. Lawrence Wilson (for verification) and Dr. Fran?ois Bouttier (Météo-France) have become the new members of the B08RDP-SSC since June of 2005 in consultation with the B08RDP-SSC (see appendix).

3. Investigation on data and on related issues for B08RDP activities
? We have decided not to set strict requirements on the assimilation of local data sets (unconventional data, which are not currently available by CMA’s GTS) because of the limit resources of the GTS and different functions of participating systems on the data assimilation. However, the local data will be available on the CMA’s FTP server for all participants in the format easy to be used and converted.
? GRIB-II will be the common format of EPS products for all participating systems. And NCEP has provided the information and web site on GRIB-II for all participants to learn and test.
? The preliminary agreement on basic products of the B08RDP EPS has been reached. We estimate that the maximum data amount of the international data transmission in real time per day for the B08RDP activities on the CMA side is about 12 Giga bytes.
? The work on establishing a wide-band FTP environment for the B08RDP is ongoing by the CMA.

4. Development of participating systems of the B08RDP
? NCEP
A new 6-member WRF-based mesoscale ensemble system has been setup and running in parallel (twice per day) for verification now. This is the parent MEPS for the B08RDP and will be adapted to the B08RDP domain next year. The system is based on two dynamical cores (NCAR’s ARW-WRF and NCEP’s NMM-WRF) and two physics packages (basically they are MM5 and Eta in origin). The breeding method is applied to the creation of the EPS IC perturbations. GFS analysis is used as IC. The LBC is coupled with NCEP global ensemble system for diversity. Resolution is about 30km currently, and it could be higher when it is adapted to the B08RDP application since the B08RPD domain is much smaller than current Northern American domain.
? JMA
Pre-operational testing of a 5-km resolution operational mesoscale model has been performed. Physical processes of JMA-NHM have been revised to reduce the model bias. A hybrid vertical coordinate version of JMA-NHM has been developed. Development of a nonhydrostatic mesoscale 4D-Var system has been underway. Assimilation of ground-based GPS network data in Japan has been tested. Downscale experiments of global EPS using a 10 km JMA-NHM have been conducted, where an incremental approach was tested. Dependencies of the simulation results on the lateral boundary condition and the initial perturbation have been studied.
? UK Met. Office
The operational implementation of the new MOGREPS (Met Office Global and Regional EPS) ensemble, witch is both a global (90km) and a regional (24km) ensemble system covering the North Atlantic and Europe (NAE), was successfully completed. Both ensembles have 24 members and are run twice per day. Initial condition perturbations are generated using the ETKF (Ensemble Transform Kalman Filter) method and take account of the full range of observations used in the Met Office 4D-Var data assimilation. The regional ensemble currently takes its perturbations from the global ensemble, but it is hoped to develop a regional perturbation scheme taking advantage of the higher resolution of the regional model in time for B08RDP.
? CMA
The CMA’s research and development plan on mesoscale super-ensemble prediction system for the B08RDP has implemented, in which two mesoscale models (localized WRF and regional GRAPES) are key parts of the MEP system, and their LB conditions are from the global ensemble prediction system. New version of the GEPS (T213L31, OI analysis, BGM perturbation, 15 members) has been installed on the new operational computation platform (21TFlops high performance parallel computer), and run in real-time in parallel test with the operational system. The results show that the products of new GEPS have larger spread than operational system. The MEPS is being underdeveloped focusing on the 3DVAR data assimilation (such as observation/background error tuning, development of AWS and Doppler radar wind profiler assimilation schemes) and mesoscale model physics (development of cloud physics scheme and city-scale boundary layer scheme).
? Météo-France and ZAMG
Preliminary work has started at Meteo-France and ZAMG in preparation for the B08RDP. The experimental ARPEGE/ALANDIN regional EPS system has been implemented at ZAMG/Meteo-France. The system is at 16km horizontal resolution over Europe. Research on IC perturbation methods, such as the comparison of Breeding, ETKF and ET methods is underway. And ALANDIN dynamical downscaling of ARPEGE global EPS system PEARP has been carried out. The ensemble generation software for ARPEGE will be upgraded to a recent IFS/ARPEGE library release.

? MSC
The regional EPS at MSC is based on downscaling of targeted singular vectors. It is composed of 16 members at 15 km resolution. The lateral boundary and initial conditions are provided by 16 global integrations at 100 km resolution with the GEM model, perturbed by moist singular vectors. The perturbations are added to a global 3D-VAR or 4D-VAR analysis. At regional scales, GEM-LAM is employed and the Kain-Fritsch deep convection scheme is perturbed with Markov processes. Tests of large-scale precipitation perturbations are underway. Currently, the system has been tested over Eastern Canada. Test over the Beijing area in August conditions will start.

5. Future activities in plan
? The test on the efficiencies of the data transmission through FTP will be conducted by the end of 2005.
? Further development on the participating regional EP systems will be continued.
? 15~30 day experiment of regional EPS over Beijing area is planed to conduct in Aug. 2006. However, it wouldn’t be require in real time. The details on the first common experiment will be discussed by B08RDP-SSC.
? Second workshop on the B08RDP is preliminarily scheduled (in late Aug. of 2006).

Acknowledgements
The following people have made contribution to the report: Jianjie Wang, Jiandong Gong, Guo Deng (CMA), DiMego Geoff & Jun Du (NCEP), Kazuo Saito (JMA), David Richardson & Richard Swinbank (UK Met. Office ), Bill Kuo (NCAR), Martin Charron & Lawrence Wilson (MSC), Fran?ois Bouttier & Yong Wang (Météo-France and ZAMG).

Appendix

B08RDP-SSC members:
? Geoff DiMego, NCEP (Geoff.Dimego@noaa.gov )
? Bill Kuo, NCAR ( kuo@ucar.edu )
? Martin Charron, MSC (Martin.Charron@ec.gc.ca )
? Kazuo Saito, JMA (ksaito@mri-jma.go.jp )
? Richard Swinbank, UKMO (richard.swinbank@metoffice.gov.uk )
? Jianjie Wang, CMA (wangjj@cma.gov.cn )
? Fran?ois Bouttier, Météo-France (francois.bouttier@meteo.fr)
? Lawrence Wilson, MSC (Lawrence.Wilson@ec.gc.ca)

B08RDP-ITeST members:
? Jun Du, NCEP (Jun.Du@noaa.gov )
? Wei Wang, NCAR (weiwang@ucar.edu )
? Amin Erfani, MSC (amin.erfani@ec.gc.ca)
? Hiromu Seko, JMA (hseko@mri-jma.go.jp )
? Richard Swinbank, UKMO ( richard.swinbank@metoffice.gov.uk )
? Jiandong Gong, CMA (gongjd@cma.gov.cn )
? Dehui Chen, CMA ( chendh@cma.gov.cn )
? Jiming Li, CMA ( Lijm@cma.gov.cn )
? Yong Wang, ZAMG (wang@zamg.ac.at)
* Jiandong Gong, secretary of B08RDP-SSC.

TOP