Alka Tiwari – PhD Defense Announcement

Hydrometeorological Impacts of the Atlantic Tropical Cyclones Using Satellite Precipitation Data

Major Professor: Dr. Keith Cherkauer

Wednesday, July 10^th at 4:00 PM

ABE 1164

Zoom

NASA Fellow, Lynn Fellow, Bilsland Fellow

Interdisciplinary Department of Ecological Sciences and Engineering

Department of Agricultural and Biological Engineering

Tropical Cyclones (TCs) are meteorological monsters causing severe rainfall and flooding. Accurate quantitative precipitation estimates (QPEs) are vital for understanding TCs, but different sources like satellite, radars, and rain gauges yield varying results. This dissertation evaluates three QPEs: NASA's IMERG, NCEP's Stage IV, and NWS's GCOOP estimates, focusing on their impact on hydrological modeling using Variable Infiltration Capacity (VIC) model. Analyzing eight TCs from 2000-2018, including Hurricanes Charley, Frances, Jeanne, Fay, Beryl, Debby, Irma and Michael, the study finds satellite QPE (IMERG) underpredicts high quantiles but aligns with other sources at lower quantiles. IMERG effectively estimates runoff and evapotranspiration, proving valuable for hydrological studies and flood preparedness in data-scarce regions.

Attached is the defense announcement. Everyone is welcome! 

Amy

Amy Ledman

She/Her/Hers

Lead Graduate Program Specialist Ecological Sciences and Engineering
Office of Interdisciplinary Graduate Programs

Ernest C. Young Hall, Rm B40
155 S. Grant St.
West Lafayette, IN 47907

o: 765-494-5865   f: 765-496-6271

Schedule a meeting: calendly.com/aledman