Estimation of size of tropical cyclones in the North Indian Ocean using Oceansat-2 scatterometer high-resolution wind products

Tropical cyclone (TC) is one of the most intense weather hazards, especially for the coastal regions, as it causes huge devastation through gale winds and torrential floods during landfall. Thus, accurate prediction of TC is of great importance to reduce the loss of life and damage to property. Most...

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Bibliographic Details
Published in:Theoretical and applied climatology 2019-04, Vol.136 (1-2), p.45-53
Main Authors: Jaiswal, Neeru, Ha, Doan Thi Thu, Kishtawal, C. M.
Format: Article
Language:English
Subjects:
Aquatic Pollution
Artificial satellites in remote sensing
Atmospheric Protection/Air Quality Control/Air Pollution
Atmospheric Sciences
Climate science
Climatology
Coastal zone
Computer simulation
Correlation
Cyclone tracks
Cyclones
Diurnal cycle
Diurnal variations
Earth and Environmental Science
Earth Sciences
Flood predictions
Hazards
High resolution
Histograms
Hurricanes
Indian Ocean
Ocean
Oceans
Order parameters
Original Paper
Prediction models
Property damage
Regions
Resolution
Scatterometers
Size estimation
Surface wind
Tropical climate
Tropical cyclones
Typhoons
Waste Water Technology
Water Management
Water Pollution Control
Weather hazards
Wind
Wind observation
Winds
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Summary:Tropical cyclone (TC) is one of the most intense weather hazards, especially for the coastal regions, as it causes huge devastation through gale winds and torrential floods during landfall. Thus, accurate prediction of TC is of great importance to reduce the loss of life and damage to property. Most of the cyclone track prediction model requires size of TC as an important parameter in order to simulate the vortex. TC size is also required in the impact assessment of TC affected regions. In the present work, the size of TCs formed in the North Indian Ocean (NIO) has been estimated using the high resolution surface wind observations from oceansat-2 scatterometer. The estimated sizes of cyclones were compared to the radius of outermost closed isobar (ROCI) values provided by Joint Typhoon warning Center (JTWC) by plotting their histograms and computing the correlation and mean absolute error (MAE). The correlation and MAE between the OSCAT wind based TC size estimation and JTWC-ROCI values was found 0.69 and 33 km, respectively. The results show that the sizes of cyclones estimated by OSCAT winds are in close agreement to the JTWC-ROCI. The ROCI values of JTWC were analyzed to study the variations in the size of tropical cyclones in NIO during different time of the diurnal cycle and intensity stages.
ISSN:0177-798X
1434-4483
DOI:10.1007/s00704-018-2464-y