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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jess/123/02/0247-0258

    • Keywords

       

      Medium range forecast; data assimilation; numerical weather prediction.

    • Abstract

       

      Medium range weather forecasts are being generated in real time using Global Data Assimilation Forecasting System (GDAFS) at NCMRWF since 1994. The system has been continuously upgraded in terms of data usage, assimilation and forecasting system. Recently this system was upgraded to a horizontal resolution of T574 (about 22 km) with 64 levels in vertical. The assimilation scheme of this upgraded system is based on the latest Grid Statistical Interpolation (GSI) scheme and it has the provision to use most of available meteorological and oceanographic satellite datasets besides conventional meteorological observations. The new system has an improved procedure for relocating tropical cyclone to its observed position with the correct intensity. All these modifications have resulted in improvement of skill of medium range forecasts by about 1 day.

    • Author Affiliations

       

      V S Prasad1 Saji Mohandas1 Surya Kanti Dutta1 M Das Gupta1 G R Iyengar1 E N Rajagopal1 Swati Basu1

      1. National Centre for Medium Range Weather Forecasting, A-50, Sector 62, Noida 201 309, India.
    • Dates

       
  • Journal of Earth System Science | News

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