【Grant-in-Aid for Scientific Research (S)】Science and Engineering (Engineering)
Title of Project： Integrated Research on State-of-the-art Multi-sensors
In-situ Observation of Storm Genesis and Reductionof Serious Disaster due to Heavy Rainfall
Eiichi Nakakita( Kyoto University, Disaster Prevention Research Institute,Professor )Research Project Number：15H057650001 Researcher Number：70183506
Research Area： Civil Engineering, Hydraulic Engineering, Hydrometeorology
Keyword： Multi Remote Sensing, Radar, Video Sonde, Rainfall Prediction, Early Warning1) Clarifications of mechanism of generation【Purpose and Background of the Research】
and development of the suddenly generated
Recently, disaster due to localized heavy rainfall isheavy rainfall (so called guerrilla heavy
noticeable under climate change and urbanization.
rainfall) and the back-building type localized
Although prediction accuracy of heavy rainfall inheavy rainfall
large spatial scale is getting higher and higher, it isstill difficult for localized heavy rainfall in smaller 2) Improvement of forecasting accuracy.
spatial scale to be even reproduced. Moreover, 3) Developing a prototype of future operational
observation system by multi-radars withearlier detection and prediction of localized andvarious wave lengths and GPS.
suddenly generated heavy rainfall (so called
guerrilla heavy rainfall) and back-building type 4) Reduction of disaster by heavy rainfall
localized heavy rainfall are very important, even if
MP Precipitation Radar
Boundary Layer Radar
the time lag is five to ten minutes. Also, prediction
Type and size of hydrometers
Thermal (up draft) [new]Baby of（The first observation over urban area）
and early warning of flash flood are expected.
storm
Seed ofUnder these circumstances, this scientific(fiｒst echo)
storm
integrated research aims to execute in-situ
campaign observations of storm genesis and growth
Air flow
Cloud drop Raindrop Light rain
Severe Rainusing various type of radars with various wave
genesisgenesislengths, and vide sonde. Also, this research aims toDoppler Lider
Cloud Radar
Phased Array Radar
Wind, vorticity
Cloud drop
Hydrometers, wind, vorticity
develop methodologies for reducing serious disaster[denser utilization]
due to localized heavy rainfall by developing early
Storm genesis （updraft and vortex genesis)
warning systems.
Multi-sensors observation
Storm growth（vortex～hydrometers）【Research Methods】
1) In-situ campaign observations of storm genesis
Figure 1 Multi-sensors observation of storm genesis
and its growth by MP meteorological radar,【Publications Relevant to the Project】
phased array meteorological radar, boundary
1) Nakakita, Eiichi, Ryuta Nishiwaki, Hiroyuki
layer radar, cloud radar, lider, GPS, and video
Yamabe, and Kosei Yamaguchi, Research on
sonde focusing on behavior of vortex tube.
the prognostic risk of baby cell for2) Preliminary observation in Okinawa and main
guerilla-heavy
rainfallconsidering
byobservation in Kobe-Osaka-Kyoto urban area.
vorticitywithDoppler
velocity,Journalof3) Improving an atmospheric mesoscale andJapan
Societyof
CivilEngineers,Ser.
B1
hydrologic surface combined model, and its(Hydraulic Engineering), Japan Society of
blending with LES atmospheric model.
Civil Engineers, Vol.57, pp.325-330, 2013.
4) Finding a behavior and mechanism of2)
Suzuki,Kenji, Midori Matsuo, Eri Nakano,generation and growth of vortex tube
Shunsuke
Shigeto, Kosei Yamaguchi, Eiichi5) Developing earlier detection and prediction
Nakakita,
Graupelin the different developing
system of guerrilla heavy rainfall based onstagesofBaiu
monsoonclouds observed bybehavior of vortex tube, and its connection withvideosondes,
AtmosphericResearch, pp.11,
in-situ warning system by emergency siren.
Available
online7
October
2013.
6) Advancing flood forecasting system and land
【Term of Project】FY2015-2019
slide risk information system【Budget Allocation】159, 500 Thousand Yen
7) Developing a system of providing real-time
rainfall information through mobile-phone【Homepage Address and Other Contact【Expected Research Achievements andInformation】
http://hmd.dpri.kyoto-u.ac.jp/nakakita/nakakita_Eng.htm
Scientific Significance】