| Budget Amount *help |
¥44,070,000 (Direct Cost: ¥33,900,000、Indirect Cost: ¥10,170,000)
Fiscal Year 2016: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Fiscal Year 2015: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2014: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2013: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
Fiscal Year 2012: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
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| Outline of Final Research Achievements |
Structure and environment of tornado-spawning tropical and extratropical cyclones are clarified, and convective available potential energy that incorporates effects of entrainment of the environmental air is shown to be useful for estimating tornado potential in a tropical cyclone. Assimilation of data of dense surface observational network and Doppler radars, using nested local ensemble transform Kalman filter, is shown to improve the prediction of the path of the low-level mesocyclone associated with the tornado-spawning supercell. The predicted strength of the tornado is well correlated with the vertical vorticity of the LMC and low-level relative humidity in the supercell, so that a probability map of encounter with LMC based on an ensemble prediction is promising for predicting tornado risk. Furthermore, an ultra-high resolution simulation succeeded in reproducing the observed multiple-vortex structure of Tsukuba, Ibaraki tornado on 6 May 2012.
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