Volume XL-8
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-8, 1059-1064, 2014
https://doi.org/10.5194/isprsarchives-XL-8-1059-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-8, 1059-1064, 2014
https://doi.org/10.5194/isprsarchives-XL-8-1059-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

  28 Nov 2014

28 Nov 2014

Supplementing Oscat winds with Saral Altika observations for cyclone studies

K. Niharika, H. S. V. Usha Sundari, A. V. V. Prasad, E. V. S. Sita Kumari, V. K. Dadhwal, and M. M. Ali K. Niharika et al.
  • National Remote Sensing Centre, Indian Space Research Organisation, Hyderabad, India

Keywords: Oceansat-2, Scatterometer (OSCAT), SARAL, AltiKa, Wind speed, Cyclones, RMW

Abstract. Accurate prediction of life cycle of cyclone is very critical to the disaster management practices. Since the cyclones originate over the oceans where in situ observations are limited, we have to resort to the remote sensing techniques. Both optical and microwave sensors help studying the cyclones. While scatterometer provide wind vectors, altimeters can give only wind speed. In this paper we present how altimeter measurements can supplement the scatterometer observations in determining the radius of maximum winds (RMW). Sustained maximum winds, indicator for the intensity of the cyclone, are within the eye wall of a cyclone at a distance of RMW. This parameter is also useful in predicting right time of the storm surge. In this paper we used the wind speed estimations from AltiKa, an altimeter operating at Ka band.