Current work:

• Army Test and Evaluation Comand

• Global Climatology Analysis Tool

• Regional climate modeling

Recent Publications:

• Improvements on Typhoon Forecast with Assimilated GPS Occultation Refractivity. Submitted to Weather and Forecasting, March 2004.

• Applications of SSM/I Satellite Data to a Hurricane Simulation. To appear in Q. J. Royal. Soc., 2004.

• Assimilation of DIAL data in mesoscale models: an impact study during IHOP_2002. Submitted to the 22nd International Laser Radar Conference. Matera, Italy, July 12-16, 2004.

• Ground-Based Radiometric Profiling during Dynamic Weather Conditions. Submitted to Journal of Applied Meteorology, 2003.

• 3DVAR Assimilation of GPS and Meteorological Observations in MM5 During the December 14th 2001 Storm Event Over the Western Mediterranean Sea. Monthly Weather Review, March 2004, 749-763.

• Observation quality estimation and its applications in the NCAR/ATEC real-time FDDA and foreacast system. Proceedings of the 16th AMS Numerical Weather Prediction Conference, Seattle January 2004.

• A multichannel radiometric profiler of temperature, humidity, and cloud liquid. Radio Science Volume 38, no 4., 8079-8092, July 2003.

• 4-Dimensional Variational Data Assimilation of Ground-Based Microwave Observations during a Winter Fog Event. International Workshop of GPS Meteorology, Tokuba, Japan, January, 2003.

  4D-VAR assimilation of GPS-derived ZTD: a case study. In proceeding of the Institute for Navigation GPS 2001 conference, Salt Lake City, September 11-14, 2001.

• Assimilation of GPS radio occultation data for numerical weather prediction. TAO Vol. 11, No.1, March 2000.

• A raytracing operator and its adjoint for the Use of GPS/MET refraction angle measurements. JGR Vol 104, D18, September 1999.

Reports, Notes and Tutorials:

• Derivation of an Adjoint Code. Learning how to code an adjoint operator.

• Theoretical basis for the MM5 3D-VAR data assimilation system. A basic introduction to variational analysis.

• Introduction to adjoint techniques and MM5 adjoint modeling system. NCAR Technical Notes TN-435-STR July 1997.

• Retrieval, Assimilation and Modeling of Atmospheric Water Vapor frm Ground Based GPS network: investigation of the Global and Regional Cycles. . Final Report, JPL, April 2004.

• Improved tropospheric delay measurements and precision orbit for satellite altimetry. Final Report, JPL, December 2000.

Education and outreach:

• St Vrain Valley Schools.

Personal:

• Mesa Verde 07
• Fashion Show 06
• The Hamptons 05