Toward the mitigation of water disaster in Indochina: Efforts to - - PowerPoint PPT Presentation

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Toward the mitigation of water disaster in Indochina: Efforts to - - PowerPoint PPT Presentation

Aug 29, 2022 185 likes •425 views

Toward the mitigation of water disaster in Indochina: Efforts to make radar composite maps over borders Takehiko Satomura Graduate School of Science, Kyoto University Radar-Raingauge Analyzed Precipitation in Japan Radar precipitation map

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Toward the mitigation of water disaster in Indochina: Efforts to make radar composite maps over borders

Takehiko Satomura Graduate School of Science, Kyoto University

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Radar-Raingauge Analyzed Precipitation in Japan

  • Radar precipitation map calibrated by rain

gauge network in real time

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AMeDAS

~1,300 points Δ< 20 km

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Radars

Doppler radar Conventional radar

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Product

Detail of Japanese system will be presented by JMA

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Operational Weather Radar “Networks” in SE Asia

As the result of investigation in Jan. 2009

By courtesy of Kamimera

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SLIDE 7

Ta Khli

Radars in Indochina

By courtesy of Kamimera

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SLIDE 8

Mindull 2010 Aug

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SLIDE 9
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We want to know

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Ta Khli By courtesy of Kamimera

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Ta Khli

Sakon Nakhon

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Ta Khli

Ubon Ratchathani

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Ta Khli

Vientinane

Vientiane (C-band) (JRC/Sigmet IRIS)

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Ta Khli

Viet Tri Viet Tri (C Band) Thomsons TRS-2730

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Ta Khli

Vinh

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Ta Khli

Difficult to imagine

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A simple trial

By courtesy of Kamimera

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Issues to be addressed

  • Inconsistency at multiple radar overlap

regions ✓ some radar obs areas include insufficient RGs

  • Un-optimized Z-R relationship.
  • Attenuation by strong rain.
  • Discrepancies between rain gauge rainfall

and radar rainfall at rain gauge points.

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An example how to solve issues

  • The issue of inconsistency

➡ TRMM-PR or GPM-DPR ✓Old-fashioned but useful

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Example ¡of ¡TRMM ¡overpass ¡for ¡Lekima

By ¡courtesy ¡of ¡Katsumata

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  • Ref. ¡Comp.: ¡Vien9ane ¡Radar ¡vs. ¡TRMM/PR

By ¡courtesy ¡of ¡Katsumata

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Near Future?