Dave Kuhl's Departmental Webpage

Background

I began the Atmospheric and Oceanic Sciences graduate program at the University of Maryland College Park in the fall of 2004. For my first year at UMD I worked with Dr. Eugenia Kalnay and Dr. Istvan Szunyogh on forecast analysis of different implementations of the Local Ensemble Kalman Filter (LEKF) data assimilation scheme with the National Centers for Environmental Prediction (NCEP) Global Forecast System (GFS). This work was published in the the Journal of the Atmospheric Sciences in 2007 as Assessing Predictability with a Local Ensemble Kalman Filter.

The second and third years of my graduate schooling was spent at NASA Langley Research Center in Hampton, Virginia, through the National Institute of Aerospace (NIA) Rising Star Fellowship program. At NASA Langley I worked with a group of atmospheric chemical modeling experts led by Dr. R. Bradley Pierce. My dissertation research concentrates on combining the advanced LEKF data assimilation techniques from UMD with advanced chemical modeling techniques at NASA Langley.

I am now back at the College Park Maryland finishing up my dissertation. My research is currently funded by a NASA Graduate Student Research Program (GSRP) fellowship.

Research Overview

I am incorporating a simple wildfire atmospheric chemistry model into the National Centers for Environmental Prediction (NCEP) Global Forecast System (GFS) and evaluating the accuracy of long-range transport of two wildfire chemical species. The two species I am tracking are: carbon monoxide (CO) -- an ideal chemical tracer for atmospheric pollution, and ozone -- important pollutant on which air quality standards are often set. The model will be, in part, evaluated using data collected from the 2004 INTEX-A field cammpaign.

Contact Info

David D. Kuhl
University of Maryland College Park
Institute for Physical Science and Technology
Computer and Space Sciences Bldg.
College Park, Maryland 20742-2431

Publications:

Kuhl, D.D., Szunyogh, I., Kostelich, E.J., Patil, D.J., Gyarmati, G., Oczkowski, M., Hunt, B., Kalnay, E., Ott, E. and Yorke, J.A. "Assessing Predictability with a Local Ensemble Kalman Filter," Journal of the Atmospheric Sciences, 2007, Vol. 64, No.4, pages 1116-1140.

Kuhl, D.D., Baker, D.R. and Hudson, R.D. "Northward Front Movement and Rising Surface Temperatures: A Case Study of the U.S. Great Plains 1980-2001," Manuscript submitted to the Journal of Climate.

Kuhl, D.D., Everhart J.L. and Hallissy, J., "Measurement and Control of the Uncertainty of Scanning Pressure Transducer Measurements," 21st AIAA Applied Aerodynamics Conference, Orlando, FL, Paper # AIAA-2003-3816, June 2003.

Iyer, V., Kuhl, D.D. and Walker E.L., "Improvements to Wall Corrections at the NASA Langley 14x22-Ft Subsonic Tunnel," 21st AIAA Applied Aerodynamics Conference, Orlando, FL, Paper # AIAA-2003-3950, June 2003.

Kuhl, D.D., 2001 "Near Wall Investigation of Three Dimensional Turbulent Boundary Layers," M.S. Thesis, Aerospace and Ocean Engineering Department, Virginia Tech, Blacksburg VA.

Kuhl, D.D. and Simpson, R.L., 2000 "Near Wall Investigation of a Streamwise Vortex Pair" Proceedings of the 10th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, paper 27.1.