SoWMEX/TiMREX Mid-Term Review Meeting

Date: 9 Am, June 10, 2008

CWB 2nd floor Satellite Center meeting room

AGENDA

1. Program overview: Ben Jou and WC Lee

2. Facility Operation/Observation Summary– Paul Chiou: Operation summary– Chris Davis/Po-Hsiung Lin: Rawinsonde and Dropsonde– Jian-Liang Wong: Shipsonde– Wen-Chau Lee/Gordon Farquharson: SPOL– Yu-Chieng Liou/Tai-Chi Chen Wang: TEAM-r– Gyuwon Lee: Supersite– Feng Lei/Sano: Japan radar– TT Terng: NWP

3. Open discussion and concluding remarks

Program Overview

Ben Jong-Dao Jou

And

Wen-Chau Lee

Rainfall statistics for Meiyu season of 2008

Station and

Rainfall (mm)

Tai-pei

Tai-chung

Kao-hsiung

Heng-chuun

A-li-shan

Sun-Moon Lake

I-Lan Hwa-lien

Tai-tung

May (mean)

258 225 177 164 531 354 264 195 157

May (08)

319 332 107 32 378 409 132 72 55

June (mean)

319 343 398 371 711 483 252 220 248

June-08 (08)

39 87 462 375 230 165 23 83 249

In May, north Taiwan has more rainfall than climate (1971-2000)

In June (the first week), south Taiwan has more rainfall than climate.

Date

Rainfall

May 29 May 31 June 2 June 3 June 4 June 5

Daily rainfall

91.0 mm 167.0 mm 84.0 mm 70.5 mm 63.0 mm 137.0 mm

Hourly rainfall

08:0028.0 mm

17:00104.5 mm

14:0020.0 mm

16:0017.5 mm

11:0010.5 mm

15:0017.5 mm

09:0026.5 mm

18:0035.0 mm

15:0020.5 mm

18:0010.5 mm

12:0010.5 mm

16:006.5 mm

10:0026.0 mm

19:0013.0 mm

16:0016.5 mm

13:0011.5 mm

17:0033.0 mm

NPUST daily rainfall and hourly rainfall during EOP

中尺度渦旋和豪雨天氣 (2000 年 6 月 5 日衛星可見光影像 )

SPOL observation (reflectivity)

SPOL observations (radial velocity)

Milestone of SoWMEX/TiMREX (1/2)• April 14-16, Sounding Inter-comparison study at Banciao, Paul

Ciesielski, PH Lin, CH Liu, and WJ Chen.• April 16- May 8, Rain measurement calibration study at NTU campus,

international team led by Gyuwon Lee (USA, Taiwan, Canada, and Korea)

• April 20, SPOL site preparation completed (Kang) and SPOL arrived Taiwan

• May 2, dropsonde test flight (PH Lin)• May 8, NCAR/EOL team completed SPOL deployment at Hsinyuan

levee and started to test.• May 10, TEAM-r started to do inter-comparison with SPOL.• May 10-13, SPOL International Training Camp held at NPUST, Pingtung

(Vivek, Gyuwon Lee, S Ellis), 40 students participated.• May 12, test cruise was successfully conducted.• May 12-15, Gyuwon Lee led the international rain measurement team to

set up the super-site network at Pingtung area.• May 12-14, Jim Moore tested the OCC operation, the video conference

facility. • May 14, Jim Wilson and Tammy Weckwerth arrived Pingtung SPOL site.• May 15, SoWMEX/TiMREX field phase started

Milestone of SoWMEX/TiMREX (2/2)

• May 15-20, only non-organizing convective systems were observed.

• May 19 06Z, IOP#1 started. Tested facility operation and coordination. Weak front approached Taiwan. MCS from SCS did not produce heavy rain over the island.

• May 22, Dave Chen and Frank Lin arrived OCC.• May 25, John Hubbert arrived SPOL.• May 28, Jenny Sun arrived OCC and SPOL.• May 27 06Z, IOP#2 started. Upstream condition and lee

vortex.• May 29 21Z, EOP started• June 1, Chris Davis, Dick Johnson, and Rita Roberts

arrived.• IOP#3-6 were conducted during EOP.

IOP# Date Science objectives Dropsonde mission Comments

1 (a & b)

06Z May 19 to 00Z May 22

Frontal circulationUpstream environment for orographic

convectionModel verification and data assimilation

mission #1 at 21Z May 20, C, 3:20/12 4‐

SOP started on 00Z May 15 and scheduled to end on 00Z June 25

2 06Z May 27 to 21Z May 29

Southwest flow interacting with the terrainUpstream condition for mountain convectionLee side vortex/shear zone

mission #2 at 21Z May 28, D, 2:35/13 6‐

Non-IOP convective systems’ microphysics study (May 22-26)

3 21Z May 29 to 12Z May 31

Island effects on SW (LLJ) and the Mei Yu ‐frontUpstream condition forheavy precipitation

mission #3 at 21Z May 29, Cn, 2:43/ 15 10 ‐mission #4 at 21Z May 30, Cn, 2:55/ 13 0‐

EOP started on 21Z May 29

4 21Z June 1 to15Z June 3

Mesoscale convective systemsShallow surface frontMesoscale convective vortex

Mission #5 at 09Z June 3, Cn, 2:29/13-0

Astra nose radar malfunction, the flight was delayed.

5 18Z June 3 to 12Z June 4

Mesoscale convective systems

Quasi-stationary front

Mesoscale convective vortex

mission #6, 21Z June 3, C, 3:47/14-2mission #7, 05Z June 4, E, 2:08/12-0

6 18Z June 4 to 12Z June 6

Mesoscale convective systems

Quasi-stationary front

Mesoscale convective vortex

mission #8, 21Z June 4, C, 3:25/15-1mission #9, 05Z June 5, E, 2:23/10-0mission #10, 21Z June 5, D, 2:35/12-1

MCV landed and brought heavy rainfall to Kaohsiung.

EOP ended at 18Z June 6 and SOP resumed.

SoWMEX/TiMREX SOP/EOP/IOP Summary

Summary of SOP/IOP/EOP

EOP ended and SOP resumed on 18Z June 6. The upper air research stations (Taichung, Liouguei, and Hengchuun) reduce to 2 sondes per day operation starting 00Z June 7and will resume 4 sondes per day on 00Z June 10.

Summary of IOP days and Astra flight hours and dropsonde left

• IOP days + EOP (9 days) = (2.75 days + 2.625 days + 9 days) = 14.375 days

• Total there are 21 IOP days planned and now only 6.625 days left.

• We have 10 flights and 129 soundings (with 24 failed) used and there are 9.66 hours and 75 drops left.

Science Objective/IOP

UpstreamConditions And LLJ

Meiyu FrontDynamics

Data Assimilation

MCS andOrographic PrecipitationProcess

ConvectionInitiation and BoundaryLayer

IOP 1 (a&b)

X X X

IOP 2 X X X X

IOP 3 X X X

IOP 4 X X X

IOP 5 X X X X

IOP 6 X X X

Score Board of SoWMEX/TiMREX

Data policy and future activity

• Excellent work has been done by Dr. Fong on SoWMEX/TiMREX Field catalog http://sowmex.cwb.gov.tw/2008/

• Raw data retrieval needs application and will be approved by Science Team.

• Priority for case selection will be coordinated by Science Team at the end of the field project.

Science Team of SoWMEX/TiMREX

1. Ben Jong-Dao Jou (NTU/NCDR), Co-Chair2. Wen-Chau Lee (NCAR/EOL), Co-Chair3. Shui-Shang Chi (CWB)4. Chris Davis (NCAR/MMM)5. Richard Johnson (CSU)6. Hung-Chi Kuo (NTU) 7. Gyuwon Lee (NCAR/EOL)8. Yu-Chieng Liou (NCU)9. Hiroshi Uyeda (Nagoya U)10.Jim Wilson (NCAR/RAL)

Seminars at CWB/NTU/NCDR (April-May-June 2008) related to SoWMEX/TiMREX

• Ellis at May 8 (Thursday), at CWB, 2:00 pm 4th floor media room• GW Lee at May 8 (Thursday), at CWB, 3:00 pm media room• Vivek at May 9 (Friday), at CWB, 3:00 pm 4th floor media room• Tammy Weckwerth at CWB, May 22, 4-5pm, Rm311• Paul Ciesielski at NCDR May 22 (Thursday), 1:30-2:30 pm, Rm311• Jim Moore at NCDR May 22 (Thursday), 11-12am, media room• Dave Chen at CWB May 27 (Tuesday) 4pm, Rm 311, Island scale weather over

Oahu, Hawaii• Jenny Sun at CWB May 29 (Thursday), 11am, media room, Radar data

assimilation using variational technique• Richard Johnson at CWB June (1-7),

– Meoscale Processes Associated with Flash-Flood-Producing Storms,– Multiscale Variability of the Flow During the 2004 North American Monsoon Experiment

• John Hubbert at CWB, June 6, Real time mitigation of ground clutter• Chris Davis at CWB June (1-13),

– Dynamics of Hurricane Vortices in Baroclinic Environments; – The Vertical Structure of Mesoscale Convective Vortices

• Rita Roberts at CWB June (1-15)• Jim Wilson at CWB June (6-19)• Nanjing University group (Y. Wang) visit Taiwan, June 15-21,• Ellis and Deierling at CWB June 11- July 3• Ed Zipser at CWB June (13-23)• Robert Fovell at CWB, June 19-25

International student program of SoWMEX/TiMREX

• USA (CSU, Utah U, Hawaii U)

• Korea (NPKU, NKPU)

• Japan (Nagoya U)

• Canada (McGill U)

• Taiwan (NTU, NCU, CCU, NPUST)