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Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.41 [2012] >
IJRSP Vol.41(3) [June 2012] >
| Title: | Estimation of pressure drop and storm surge height associated to tropical cyclone using Doppler velocity |
| Authors: | Pradhan, Devendra
Mitra, Anasuya
De, U K |
| Keywords: | Tropical cyclone
Storm surge height
Central pressure drop
Radial velocity
Cyclonic storm |
| Issue Date: | Jun-2012 |
| Publisher: | NISCAIR-CSIR, India |
| PACS No.: | 92.60.hv; 92.60.Qx |
| Abstract: | A study of five tropical cyclones in the Bay of Bengal has been conducted to estimate the pressure
drop in the eye of the cyclone and associated storm surge height using Doppler
velocity data. A new value of constant K (13.637) has been found in the
empirical relation Vmax = K√(P-Pc) between maximum velocity (Vmax)
and central pressure drop (P-Pc) in terms of maximum radial velocity
measured by the Doppler Weather Radar (DWR) for coastal region of India. The
present study provides an alternate method for estimating central pressure drop
and expected storm surge height associated to a tropical cyclone. The study
also reveals that the storm surge height estimated from Doppler velocity
measurements for these cyclones is very close to the actual occurrence. The
results of pressure drop estimates from Doppler velocity are in close agreement
with the satellite estimates. It is also observed that DWR estimates are
sometimes better than those from satellite. However, the limitation of DWR is
the limited range of observation (400 km) and shorter duration of cyclone
tracking. |
| Page(s): | 348-358 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Source: | IJRSP Vol.41(3) [June 2012]
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