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| Abstract Submission No. | ABS-2022-07-0316 |
| Title of Abstract | Effect of systematic error correction to ship based wind speed observations on Air-sea fluxes across Tropical Indian Ocean |
| Authors | Nunna Kameshwari*, Udaya Bhaskar TVS |
| Organisation | INCOIS |
| Address | Flat-102,Plot-65 SAI MITHRA KUTEER,R.K.Layout,PRAGATHI NAGAR,opp lane to INCOIS. Hyderabad, Telangana, India Pincode: 500090 Mobile: 8885206694 E-mail: kameshwari.n@incois.gov.in |
| Country | India |
| Presentation | Oral |
| Abstract | This study describes the systematic error correction derived for ship-based wind speed observations and its effect on fluxes at sea surface across TIO. The ship-based observations made across the Tropical Indian Ocean (TIO) are obtained from Indian Meteorological Department (IMD) and Naval Operations Data Processing and Analysis Centre (NODPAC). These are combined with International Comprehensive Ocean-Atmosphere Dataset (ICOADS R3.0). These ship observations from the Voluntary Observing Ships (VOS) have been found to contain both random and systematic errors. The current study makes an attempt to apply a systematic error correction upon wind speed (WS). The error correction upon WS is obtained by correcting the World Meteorological Organization (WMO) 1100 scale. The error correction derived exclusively for TIO reduces the magnitude of over-estimated WS and increases the magnitude of underestimated WS as given by the old WMO 1100 scale. A similar pattern of change is observed in momentum fluxes also. The heat fluxes derived from the error corrected wind speeds and other independent variables are analyzed and the net heat flux budget across TIO was observed to reduce significantly. |