Hi, I am Ujjwal Narayan. Thank you for your interest in my research webpage.

I am currently purusing a post doctoral research position under the guidance of Dr Rafael L. Bras at the Ralph M Parsons Lab. I am interested in understanding the complex feedbacks occurring at the land atmosphere boundary and their role in weather and climate predictability. Land atmosphere interaction is an area of wide interest, i am focusing on the enhancement in seasonal to inter-annual predictability of climate potentially achievable by emphasizing the role of topography modulated soil moisture and vegetation dynamics. A numerical modeling framework comprised of the Weather Research Forecast (WRF) model coupled with the tRIBS-VEGGIE (TRIBS) has been developed to serve as an experimental test bed. Here is a presentation that gives an overview of the WRF-tRIBS coupled model.

In the past i have worked on microwave remote sensing of soil moisture, large scale hydrological modeling and hydrologic information systems. I obtained my PhD at the Department of Geological Sciences, University of South Carolina (USC) in August 2006 under the supervision of Dr Venkat Lakshmi. My doctoral work was partly funded through the Earth System Science Fellowship program which was awarded for this proposal. I received my Bachelor’s degree in May 2002 from the Indian Institute of Technology, Kanpur where i majored in Civil Engineering.

Journal Publications

  1. U. Narayan, V. Lakshmi and E. G. Njoku (2004), “Retrieval of soil moisture from passive and active L/S band sensor during the soil moisture experiment in 2002 (SMEX02),” Remote Sensing of the Environment, Volume 92, Issue 4, pp.483-496 [1]

  2. Lakshmi, V., T. Piechota, U. Narayan, and C. Tang (2004), “Soil moisture as an indicator of weather extremes,” Geophys. Res. Lett., 31, L11401, doi: 10.1029/2004GL019930. [2]

  3. Bolten, J., Narayan, U., Guijarro, L. and V. Lakshmi (2004), “Passive-active remote sensing of soil moisture at both L and C bands: a comparison of two field experiments,” Italian Journal of Remote Sensing, 30/31:65-86 [3]

  4. Narayan, U., V Lakshmi and T. J. Jackson (2006). “High Resolution Change Estimation of Soil Moisture Using L- Band Radiometer and Radar Observations Made During the SMEX02 Experiments", IEEE Transactions on Geoscience and Remote Sensing, 44(6) pp 1545-1554 [4]

  5. Narayan, U., and V. Lakshmi (2008). "Characterizing subpixel variability of low resolution radiometer derived soil moisture using high resolution radar data", Water Resour. Res., 44, W06425 [5]

  6. Kanwar, R., Narayan, U., and Lakshmi V (2008). "Web Service Based Hydrologic Data Distribution System", Computers and Geosciences, Accepted. [6]