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). A publication based on this work was recently accepted with revision by the Journal of the Atmospheric Sciences.

While still a graduate student at UMD, I now conduct research at NASA Langley Research Center in Hampton, Virginia, through the National Institute of Aerospace (NIA) Rising Star Fellowship program. At NASA Langley I work with a group of atmospheric chemical modeling experts led by Dr. R. Bradley Pierce. My research concentrates on combining the advanced LEKF data assimilation techniques from UMD with advanced chemical modeling techniques at NASA Langley. Through NASA Langley and the University of Maryland we have also set up collaboration with Dr. Wallace McMillan at the University of Maryland Baltimore County. Dr. McMillan processes AIRS instrument data from the NASA Aqua satellite, which will be used to assimilate the CO data.

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 will be tracking are: carbon monoxide (CO) -- an ideal chemical tracer for atmospheric pollution, and carbonaceous aerosols -- a primary pollutant with significant health implications. The model will be, in part, evaluated using data collected from the 2002 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, 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 in Preparation to be submitted to Geophysical Review Letters.

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.