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Introduction of T-PARC-China Component
Dehui Chen1, Jishan Xue1 and Zhemin Tan2
(April 23, 2007, Beijing, China)1LaSW/CAMS
(state-key Laboratory of Severe Weather/Chinese Academy of Meteorological Science
2NJU (Nanjing University), China
Thanks to the contributors from the members of THORPEX-China committee, ARC and N-ARC
Outline
1. THORPEX?
2. I. T-PARC?
3. T-PARC-China
4. Summary and Discussion
THORPEX: a world wild atmospheric research program within WWRP/WMO for 10 years.
THORPEX science plan was completed in 2003; and THORPEX Implementation Plan (TIP) started in 2005.
Main goal: to accelerate to increase the accuracy of 1 day to 2 weeks HIW forecasts.
1. THORPEX abbreviated from THe Obs. Research and Predictability EXperiment
THORPEX : Four Sub-programs
Dynamical Processes & Predictability (PDP)
Data Assimilation & Observing Strategies (DAOS)
Observing Systems (OS)
850 KM
SUBSATELLITE POINT
GOMS (Russian Federation)
76E
MSG
(EUMETSAT) 63 E
MTSAT (J apan)
140E
FY-2 (China)
105E
GOES-E (USA) 75W
NPOESS (USA)
GOES-W (USA) 135W
Oceanographic Missions
AtmosphericChemistryMissions
HydrologicalMissions
High-resolutionLand useMissions
METEOR 3M(Russian Federation)
METEOSAT
(EUMETSAT) 0 Longitude
(China)FY-1
Metop (EUMETSAT)
Societal & Economic Research & Applications (SERA)
2. I. T-PARC?
T-PARC is short form of THORPEX Pacific Asian Regional Campaign.
It is an integrated atmospheric research program from several THORPEX regional projects which are planning to be conducted over Asia-Pacific Ocean and the adjacent areas.
NRL P-3 and HIAPER with theDLR Wind Lidar
NRL P-3 and HIAPER with theDLR Wind Lidar
Upgraded Russian Upgraded Russian Radiosonde Network for IPYRadiosonde Network for IPY
Winter storms reconnaissanceand driftsonde
IPY(07-09)(Courtesy of T. Nakazawa )
AMAMY08Y08Palau/Palau/
JAMSTEXJAMSTEX
T-PARC Experiment fields
SCHeREX
Motivations of T-PARC
The T-PARC is mainly motivated from the
Asian and North American prospective:
Societal and economic impacts from the HIWs,
such as heavy rainfall associated with the
Meiyu front, convective systems, tropical
cyclone (typhoon), extra-tropical transition
(ET), winter wind storms, and so on.
The composition of T-PARC
(1) Tropical component: Advance understanding TC genesis, interactions with L.S. circulations (sub. H.) and Improve the TC and related heavy rain predictions.
(3) Winter component: Advance understanding of winter wind storms, the upstream over EA-WCPO which influence the downstream HIWs in N-America, and Improve the prediction
(2) ET component: Advance understanding the interactions beteewn tropics & mid-latitudes, improve the ET predictions.
(4) New NWP approaches: Interactive observation-forecast system; Grand ensemble prediction system
Participants/Partners of T-PARC
The countries and organizations which have been involved in the T-PARC program:
North America: US Academic Community and US Research Institutions, Mexico and Canadian Universities and MSC;
Asia: China-CMA, IAP/CAS, Japan-JMA, JAMSTEC, Korea-KMA, Vietnam, Universities;
Europe: Germany U of Karlrsuhe, Institut für Physik der Atmosphäre, DLR, Met Centers through TIGGE (ECMWF, Meteo-France, Met Office, EUCOS).
3. T-PARC-China component
Why T-PARC-China?What’s interesting?
Illustration of the complicated systems in Illustration of the complicated systems in summer season: Meiyu front, mid-lat. cold summer season: Meiyu front, mid-lat. cold air flow, TC, monsoon trough, S-E trend, air flow, TC, monsoon trough, S-E trend, T.C.C. clusters, sub-T. high, etc.T.C.C. clusters, sub-T. high, etc.
(Courtesy of S.Y. Tao)(Courtesy of S.Y. Tao)
Major concerns for the weather forecast in CMA: Meiyu frontal H.R. & T.C.
Our current ability is much limited in predicting them.
It is thought to be related to the inadequacies in the initial conditions and in the treatment with dyn. & phy. processes particularly due to the lack of obs. in the south of Sub-T. high where the clouds cover often.
► 7506# (Nina) TC was generated on 20th July 1975. ► And then it moved in north westward.► It crossed Taiwan Island and landed in Fujian province at 02Z on 4th Aug. 1975.► At 20Z on 5th Aug. 1975, the tropical cyclone arrived in Changde city of Hunan province and then in Tongbo city of Henan province. It caused a dramatic flooding in Henan province.
7506# (Nina)Typhoon’s track
Henan
Hubei
Hunan
Daily 24h accumulated precipitation from 1st – 8th Aug.
The averaged amount of precip. more than 500mm/5 days; 1400 mm/5 days recorded in several stations.
Damages: dams destroyed, …?? >100 000 dead/missing, worst in histo.
Scenes from the Extratropical Transition of Super Typhoon Tokage
(2004) in Japan:
★ Damages in public infrastructure (agriculture And roads) exceeds 10B$ in 2004★ 230 deaths/missing, worst after 1983
IMPACTS OF EXTRATROPICAL TRANSITION EVENTS:TY Tokage, October 2004, Damage in Japan and to U.S. Navy ships in Japan.
Saomai: EPS tracks from 12UTC of 6 Aug 2006
: observed position (every 24h).
“China's most powerful storm in past 50 years, Typhoon Saomai, has left at least 104 people dead. More than a million people were evacuated from the homes .. more than 50,000 houses had been destroyed.” (from the press).
Percentages of Occurrence of OCCs, 2004
L TD
TS ALL
8.3
6.751.710.0
23.3
20.0
6.760.0 0.0
13.3
6.9
10.358.6 3.4
20.7
9.6
7.754.8 6.7
21.2Courtesy of Bessho et al. 2006
3. T-PARC-China
The key points of T-PARC-China
component include:
(1) the field observation experiments with
balloon-driftsonding from Hawaii, Chinese-
made-aircraft-dropsonding over South
China Sea and intensified network over
mainland of South-China;
3. What’s the T-PARC-China (cont.)
The key points of T-PARC-China
component include (cont.):
(2) the atmospheric scientific research
focusing on the mechanism of HIWs (TC
genesis, heavy rain, interactions between
tropical-low latitudes and extra-tropical-mid
latitudes); predictability and NWP
improvements; societal economic
applications and assessments.
T-PARC-China Key points :Obs.: Land, Aircraft, BalloonRes.: Mechan., Pred., App.
Balloon Aircraft
Land
Period: 2007~2009
Expected to fill critical gaps in coverage of clouds over oceanic regions (sensitivity Expected to fill critical gaps in coverage of clouds over oceanic regions (sensitivity area); ada. obs. + others assimilated to improve the HR forecast in targeting area.area); ada. obs. + others assimilated to improve the HR forecast in targeting area.
Tar. area
Adap. Obs. ●●●●
●●●●
24h48h 00h●●●●
●●●●
72h
(Courtesy of S.Y. Tao)(Courtesy of S.Y. Tao)
From AMMA Project (courtesy of D. Parson)
Trajectories of the balloons from upper level of Hawaii
2006-Aug. (courtesy of D. Parson)
Cost-effective dropsonde observations of wind, temperature, and humidity to fill critical gaps in coverage over oceanic and remote artic and continental regions over days to weeks. (Courtesy of D. Parson)
Driftsonde TOST
25
Objectives of T-PARC-China
• (1) to enhance the intern’l Collaborations;
• (2) to test the new techniques of adaptive observation systems;
• (3) to deeper study on the mechanism and predictability of HIWs in China;
• (4) to test the new concepts of interactive observation-prediction system.
• (5) to improve the HIW forecast
4. Summary and Discussion
4. Summary and Discussion
(1) T-PARC is a comprehensive
atmospheric research programme. The
field experiment of T-PARC covers the
pan-Asia-Pacific Ocean region.
(2) The researches focus on the TC
genesis, ET, heavy rain, interactions
between tropical low-lat. and extra-tropical
mid-lat., and on accelerating improvement
of NWP accuracy.
4. Summary and Discussion (cont.)
(3) The countries or organizations involved:
Europe (Germany, UK-Met. O.), N-America
(Canada, USA, Mexico), Asia (China, Korea,
Japan, India, Vietnam, and so on)
(4) Current status: MRI-Project approved,
Korea-Project approved, China-project and
USA-project in final step approval. 3-5th
April: a planning meeting of T-PARC in
Monterey
4. Summary and Discussion (cont.)
(5) Period: pre-Obs. in summer of 2007 (?);
Obs. in August 2008 (B08-Olympic Games)
(6) Links to AMY08, IPY-2007~2009, others
(7) By near end of next May, in Beijing,
THORPEX-China meeting; Special session
for T-PARC-China discussion; in next Oct.,
THORPEX-Asia workshop is planning
THANK YOU!