Colorado State University

Research

Naufal Razin current and past research

Check Naufal Razin's Publication List

Tropical Cyclone Precipitation, Infrared, Microwave, and Environmental Dataset (TC PRIMED)

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Group Members: Naufal Razin , Michael M. Bell

TC PRIMED is a comprehensive dataset of global tropical cyclone (TC) satellite passive microwave observations. The central components of this dataset are TC-centered 1) multi-channel microwave brightness temperatures inter-calibrated across all available imagers using NASA's Global Precipitation Measurement (GPM) mission's microwave imager and 2) rainfall retrieval from NASA's Goddard Profiling Algorithm (GPROF). Auxiliary data include nearly coincident geostationary satellite infrared imagery around the satellite overpass time, TC best-track information, ECMWF ERA5 reanalysis fields and derived environmental diagnostics at each synoptic time, and TRMM/GPM precipitation radar variables. This dataset includes 157,400 overpasses of 1996 storms from 1998 to 2018, and will be updated annually.

The Unconventional Eyewall Replacement Cycle of Hurricane Ophelia (2005)

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Group Members: Naufal Razin , Michael M. Bell

Using flight-level and airborne radar data, Hurricane Ophelia was shown to have undergone an unconventional eyewall replacement cycle (ERC). Ophelia\'s ERC was unconventional because it occurred while the storm was at Category \1 intensity and located over anomalously cold sea surface temperatures. Airborne radar analyses showed that the expansion of Ophelia\'s wind field associated with the ERC occurred in the dominantly stratiform rainbands, indicating that the stratiform kinematics in Ophelia's rainbands played a dominant role in Ophelia's ERC.