Numerical Weather Prediction for Himalayan Complex Terrain: Prospects of Variational Data Assimilation

Authors

  • Sangeeta Maharjan National Atmospheric Resource and Environmental Research Laboratory (NARERL) and Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu
  • Ram P. Regmi National Atmospheric Resource and Environmental Research Laboratory (NARERL) and Central Department of Physics, Tribhuvan University, Kirtipur, Kathmandu

DOI:

https://doi.org/10.3126/jnphyssoc.v3i1.14445

Keywords:

Numerical weather prediction, atmospheric modeling, data assimilation, weather disasters, complex terrain

Abstract

As part of the ongoing research activities at National Atmospheric Resource and Environmental Research Laboratory (NARERL) to realize high spatial and temporal resolution weather forecasts for Nepal, the Weather Research and Forecasting (WRF) modeling system performance with the National Center for Environmental Protection (NCEP) and National Center for Medium Range Weather Forecast (NCMRWF) initialization global meteorological data sets and the effect of surface observation data assimilation have been examined. The study shows that WRF modeling system reasonably well predicts the diurnal variation of upcoming weather events with both the data sets. The observation data assimilation from entire weather station distributed over the country may lead to the significant improvement in the accuracy and reliability of extended period of forecast. However, upper air observation data assimilation would be necessary to achieve desired precision and reliability of extended weather forecast.

Journal of Nepal Physical Society Vol.3(1) 2015: 67-72

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Published

2016-01-28

How to Cite

Maharjan, S., & Regmi, R. P. (2016). Numerical Weather Prediction for Himalayan Complex Terrain: Prospects of Variational Data Assimilation. Journal of Nepal Physical Society, 3(1), 67–72. https://doi.org/10.3126/jnphyssoc.v3i1.14445

Issue

Vol. 3 No. 1 (2015)

Section

Articles

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