T. Jayaraman

🌩️ India Enters the Big League of Global Weather Forecasting! Huge milestone in Indian weather science! The India Meteorological Department (IMD has officially adopted the Bharat Forecast System (BFS) as its core global forecasting model — a homegrown high-resolution global model developed by the Indian Institute of Tropical Meteorology (IITM), Pune. This marks a major scientific leap for India, enabling more accurate predictions of tropical weather: monsoons, cyclones, and extreme rainfall. The system is based on the HGFM v1 (High-resolution Global Forecast Model), now peer-reviewed and published in Geoscientific Model Development: 📘 [gmd.copernicus.org/articles/…] 🔍 What Makes the Bharat Forecast System Stand Out? ✅ Ultra-High Resolution Spectral resolution T2047 (\~6 km) over tropics — among the highest globally 137 vertical levels, model top at 0.01 hPa ✅ State-of-the-Art Coupled Modeling Atmosphere–Ocean–Land–Ice coupling via CMEPS mediator Ocean component: MOM6, Land: Noah LSM ✅ Advanced Data Assimilation 4D-Var system using GSI, assimilating satellite radiances, in-situ, and upper-air observations ✅ Tailored Physics for Monsoon Dynamics 🌦️Deep convection: Zhang–McFarlane 🌤️Shallow convection: UW scheme ⛅Cloud microphysics: GFDL 🌬️ PBL: MYNN Level 2.5 🌞 Radiation : RRTMG 🌱Land surface: Noah LSM 🌫️ Aerosol-radiation interaction: CAM-style coupling 👨‍🔬 Kudos to the visionary scientists at IITM and IMD for this giant leap in indigenous capability!