Analysis of Heavy Rainfall with Hail using Reflectivity and Radial Velocity Derived from X-Band Radar in Bandung (Study Case: March 17, 2017)

Sinatra, Tiin; Nugroho, Gatot

doi:10.1088/1755-1315/166/1/012039

Cited by 4 publications

(4 citation statements)

References 6 publications

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“…Hail Cloud Stage Identification. The identification of hail phenomenon is obtained from C-Band Radar reflectivity data and Himawari 8 satellite data [5,7,9,10], and the rain gauge data.…”

Section: Resultsmentioning

confidence: 99%

“…In this research, Day Microphysics, Day Convective Storms, and Airmass techniques were used. The Day Microphysics technique is the RGB technique for detailed cloud particle detection [9] associated with the structure of CB cloud, which produces hail. The Day Convective Storms technique is an RGB technique for the detection of convective clouds with strong updrafts [12] associated with the atmosphere condition within the CB cloud, which produces hail.…”

Section: Methodsmentioning

confidence: 99%

“…The hail cloud consists of ice particles inside, which can be interpreted by the Day Convective Storm Technique images [8]. Because hail is one of the high variability events in time and space, radar data is very useful to capture the hail where ground weather stations can't always accurately do it [9,8]. Hail indicates high radar reflectivity, which is associated with precipitation volume in the atmosphere [8].…”

Section: Introductionmentioning

confidence: 99%

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Atmosphere Condition Analysis on Hail Event (Case Study : Pelalawan on September 23rd, 2019)

FRYSTINE

2022

JMG

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<p align="justify">Hail in Pulau Muda Village, Pelalawan Regency, Riau Province, occured on September 23rd 2019 when the entire Riau area was covered by smoke due to forest and land fires phenomenon. The hail was not accompanied by extreme rain and did not cause material harm. However, a study of atmospheric conditions before, during, and after the hail occurred is needed to reference for early warning of future events. The result was analyzed descriptively on the radar products, satellite images and observation parameters. CMAX and VCUT of radar product generated from RainbowV5.9 showed that at 06.02 UTC there was a single CB cloud, which its maximum reflectivity core was 60 dBZ at 5 km height. Both the core reflectivity and its height decreased by the time as the cloud dissipated. Himawari-8 RGB images and cloud top temperature time series processed by SATAID showed a significant decrease of cloud top temperature reached -75<sup>o</sup>C at 06.00 UTC where the cloud had large ice particles with strong updraft and dissipated within 1 hour into thin cirrus and medium-low clouds. ECMWF ERA5 Reanalysis data processed by GrADS showed that surface air temperature, RH, and CAPE index has a different value from h-1 to h+1 of hail occurrence. Vertical profile showed the single CB cloud had much amount of ice particles and also strong updrafts that the maximum value of updraft was 0,202 m/s at the development stage. In contrast, the maximum value of downdraft was 0,032 m/s in the dissipation stage of the cloud.</p>

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“…Hail Cloud Stage Identification. The identification of hail phenomenon is obtained from C-Band Radar reflectivity data and Himawari 8 satellite data [5,7,9,10], and the rain gauge data.…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Atmosphere Condition Analysis on Hail Event (Case Study : Pelalawan on September 23rd, 2019)

FRYSTINE

2022

JMG

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“…Hail as a trigger mechanism over a large study region has not been examined explicitly in Austria. Based on other studies it can be assumed, however, that hail occurred also within high-intensity precipitation events (Nisi et al 2020, Sinatra andNugroho 2018). Therefore, within this study on different regions in the Austrian Alps, the focus is to utilize the available data on natural hazards and precipitation to approximate the effect of hail on torrential events with a focus on landslides and bedload transport.…”

Section: The Current Knowledgementioning

confidence: 99%

The Importance of Hail Events for Landslides and Bedload Transport in Austrian Alpine Torrents

Schritter

Glade

2021

Preprint

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Landslides and bedload transport can be a threat to people, infrastructure, and vegetation. Many detailed hydrometeorological trigger mechanisms of such natural hazards are still poorly understood. This is in particular valid concerning hail as a trigger of these processes. Therefore, this study aims to determine the influence of hail on landslides and bedload transport in alpine torrents. Based on a generated table from an event register of mountain processes maintained by the Avalanche and Torrent Control Unit (WLV) and weather data provided by the Centre for Meteorology and Geodynamics (ZAMG), 1,573 observed events between 1980 and 2019 in 79 Austrian alpine sites are analysed. Thiessen polygons are used to regionalise local weather data to adjacent regions. The spatial extend of these regions are merged with the registered torrential events. As a result of a stepwise filtering of the used data, the final inventory was created.The results show that 95.1% of the investigated torrential processes triggered by hailstorms are debris flows or debris flow-like transports. Within the study period, a peak of hail-triggered landslides and bedload transport can be recognised in the first 10 days of August in all 39 years. Furthermore, the results suggest that hail is rather a direct than an indirect trigger for landslides and bedload transport.Overall, we conclude that the influence of hail on landslides and bedload transport is significant. Respective hydrometeorological triggering conditions should be included in any regions. Further research for this topic is required to explore the process dynamics in greater detail.

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Analysis of Atmospheric Conditions on Hail Events in Bandung on March 8, 2022

Saufina

Sinatra

Purwaningsih

et al. 2023

Springer Proceedings in Physics

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Analysis of Heavy Rainfall with Hail using Reflectivity and Radial Velocity Derived from X-Band Radar in Bandung (Study Case: March 17, 2017)

Cited by 4 publications

References 6 publications

Atmosphere Condition Analysis on Hail Event (Case Study : Pelalawan on September 23rd, 2019)

Atmosphere Condition Analysis on Hail Event (Case Study : Pelalawan on September 23rd, 2019)

The Importance of Hail Events for Landslides and Bedload Transport in Austrian Alpine Torrents

Analysis of Atmospheric Conditions on Hail Events in Bandung on March 8, 2022

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