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Ship-mounted real-time surface observational system on board Indian vessels for validation and refinement of model forcing fields

Harikumar, R and Balakrishnan Nair, TM and Bhat, GS and Nayak, S and Reddem, VS and Shenoi, SSC (2013) Ship-mounted real-time surface observational system on board Indian vessels for validation and refinement of model forcing fields. Journal of Atmospheric and Oceanic Technology, 30 (3). pp. 626-637. ISSN 1520-0426

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Abstract

A network of ship-mounted real-time Automatic Weather Stations integrated with Indian geosynchronous satellites Indian National Satellites (INSATs) 3A and 3C, named Indian National Centre for Ocean Information Services Real-Time Automatic Weather Stations (I-RAWS), is established. The purpose of I-RAWS is to measure the surface meteorological-ocean parameters and transmit the data in real time in order to validate and refine the forcing parameters (obtained from different meteorological agencies) of the Indian Ocean Forecasting System (INDOFOS). Preliminary validation and intercomparison of analyzed products obtained from the National Centre for Medium Range Weather Forecasting and the European Centre for Medium-Range Weather Forecasts using the data collected from I-RAWS were carried out. This I-RAWS was mounted on board oceanographic research vessel Sagar Nidhi during a cruise across three oceanic regimes, namely, the tropical Indian Ocean, the extratropical Indian Ocean, and the Southern Ocean. The results obtained from such a validation and intercomparison, and its implications with special reference to the usage of atmospheric model data for forcing ocean model, are discussed in detail. It is noticed that the performance of analysis products from both atmospheric models is similar and good; however, European Centre for Medium-Range Weather Forecasts air temperature over the extratropical Indian Ocean and wind speed in the Southern Ocean are marginally better.

Item Type: Article
Additional Information: Copyright of this article belongs to American Meteorological Society.
Uncontrolled Keywords: Atmosphere-ocean interaction, Automatic weather stations, In situ atmospheric observations, Ship observations, Model evaluation/performance
Subjects: Oceanography > oceanography
Depositing User: INCOIS Library
Date Deposited: 14 Dec 2013 05:34
Last Modified: 14 Dec 2013 05:34
URI: http://moeseprints.incois.gov.in/id/eprint/120

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