CURRICULUM VITAE

Qingnong Xiao

NCAR/MMM

3450 Mitchell Lane

Boulder, CO 80301

Telephone: (303)-497-8177, Fax: (303)-497-8171, Email: hsiao@ucar.edu

EDUCATION

Ph. D., Nanjing University, Nanjing, China, 1994

Major: Mesoscale Meteorology and Modeling
Thesis: Influence of Orography on Fronts and Cyclones in the Atmosphere

M. S., Nanjing Institute of Meteorology, Nanjing, China, 1988
B. S., Nanjing Institute of Meteorology, Nanjing, China, 1983

PROFESSIONAL EXPERIENCES

Project Scientist II, NCAR MMM Division, September 2004 -- present

Development of the WRF tangent linear and adjoint models and their implementation in WRF 4D-Var system.
Investigation of the impact of air-borne Doppler radar data on hurricane initialization and prediction with WRF-Var.
Data assimilation experiments and target observation strategy investigation using WRF variational system for Antarctica to support RIME.
Studies of IHOP-2002 convective cases with Doppler radar data assimilation using WRF 3D-Var.
Satellite data assimilation experiments for Hurricanes using MM5 4D-VAR and WRF/MM5 3D-Var systems.

Adjunct Professor, Chinese Academy of Meteorological Sciences, Beijing, China, June 2007 -- present
Project Scientist I, NCAR MMM Division, September 2001 – September 2004

Development of the MM5 and WRF 3D-Var system.
3/4D-Var assimilation of satellite data using MM5 3/4D-Var system.
Collaboration on the development of Doppler radar data assimilation using MM5 and WRF 3D-Var system with KMA (Korea Meteorological Administration).
Development of tropical cyclone initialization scheme in MM5 and WRF 3D-Var systems.
Development of tangent linear and adjoint models for WRF.

Assistant Scientist in Research, Department of Meteorology, Florida State University, October 1997 - September 2001

4D-Var assimilation of satellite data, radar data, dropsonde data using MM5 4D-Var system.
Test of a fast radiative transfer model and development of its tangent linear and adjoint models.
Study of extratropical cyclones and hurricanes.
Ensemble Prediction with breeding of growing modes.

Post-doctoral Scientist, National Center for Atmospheric Research (NCAR), Mesoscale and Microscale Division (MMM), July 1996 - October 1997

Development of the incremental approach for MM5 4D-Var system.
Test of a fast radiative transfer model and development of its tangent linear and adjoint models.
3D/4D-Var assimilation of SSM/I rain rate and precipitable water for the ERICA-IOP4 case study.

Lecturer and Associate Professor, Nanjing Institute of Meteorology, April 1994-July 1996:

Courses taught:

Mesoscale Meteorological Modeling
Severe Storms and Cloud Physics

Research:

Influences of orography on gravity currents, fronts and cyclones
Numerical simulation of severe storms using Penn State/NCAR MM5 model

Visiting Scientist, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Chinese Academy of Sciences, July 1995-December 1995

Numerical simulation of heavy storms using mesoscale model MM5 model

ASSOCIATIONS

Member of American Meteorological Society
Member of American Geophysical Union
Member of China Meteorological Society

PROFESSIONAL SERVICE ACTIVITIES

Program Committee Member, Conference on Assimilation of Remote Sensing and In-situ Data in Modern Numerical Weather and Environmental Prediction Models, SPIE, 26-30 August 2007, San Diego, CA
Review of journal papers from Journal of Atmospheric Sciences, Monthly Weather Review, Journal of Applied Meteorology, Weather and Forecasting, Journal of Atmospheric and Oceanic Technology, Advances in Atmospheric Sciences, Journal of Meteorological Society of Japan, JGR-Atmosphere, Geophysical Research Letters, etc.
Review of proposals for NASA and NSF

SUPERVISORY AND GRADUATE ADVISING EXPERIENCES

2005 – present: Supervisor, Xiaoyan Zhang, NCAR Associate Scientist
2004 – 2006: Supervisor and Advisor, Jianfeng Gu, NCAR visitor and Ph. D. Student of Chinese Academy of Meteorological Sciences, Beijing, China. (Graduated in June 2006)
2006 – present: Supervisor and Advisor, Hsiao-Wei Lai, NCAR graduate visitor and Ph. D. student of National Taiwan University, Taiwan, ROC
2007 – present: Supervisor and Advisor, Chengsi Liu, NCAR graduate visitor and Ph. D. student of Institute of Atmospheric Physics, China
2007 – present: Advisor, Hongya Liu, Ph. D. student of Chinese Academy of Meteorological Sciences, Beijing, China

FUNDING ACTIVITIES

CO-PI for the KMA project “Development on Assimilation of Doppler Radar Observations with MM5 3DVAR System”, January 2002-December 2003.
CO-PI for the NSF/OPP project “Data Assimilation Research in Support of RIME (Ross Island Meteorological Experiment)”, October 2003-October 2006.
CO-PI for the USWRP project “Assimilation of Multiple Doppler Radar Data to Improve 0-12 hr QPF”, October 2003-October 2006.
CO-PI for the NASA project “Application of Four Dimensional Variational Analysis to Examine Intensity Variations of Hurricane Lili”, October 2004-October 2005
CO-PI for the NCAR Opportunity Fund “Airbone Doppler Radar Initialization of Landfalling Hurricanes”, October 2005 - October 2007
CO-PI for the NOAA project “Risk Reduction through Accurate Local Weather Forecasts”, October 2005-, ongoing
CO-PI for USWRP STEP Project “High Resolution Data Assimilation to Improve 0-12 hr QPF”, October 2007- , ongoing
CO-PI for the NSF-Taiwan Proposal for TiMREX (Taiwan Island Monsoon Rainfall Experiment), June 2007-, ongoing
PI for the KMA METRI proposal “Development of a Nowcasting and Very Short Term Forecasting System Using 4D Variational Method Based upon the WRF Model”, 2008-2011, Pending

REFEREED PUBLICATIONS

Xiao, Q., Y.-H. Kuo, Z. Ma, W. Huang, X.-Y. Huang, X. Zhang, D. Barker, J. Michalakes, and J. Dudhia, 2008: Development of the WRF adjoint modeling system and its application to the investigation of the May 2004 McMurdo Antarctica severe wind event. Mon. Wea. Rev., in press.

Yeh, H., and Q. Xiao, 2008: Impact of radar data assimilation on the prediction of an extremely torrential rain event over Taiwan associated with Typhoon Mindulle (2004). Weather and Forecasting, submitted.

Xiao, Q., Eunha Lim, D.-J. Won, J. Sun, W.-C. Lee, M.-S. Lee, W.-J. Lee, J. Cho, Y.-H. Kuo, D. Barker, D.-K. Lee, and H.-S. Lee, 2008: Doppler radar data assimilation in KMA’s operational forecasting. Bull. Amer. Meteor. Soc., 89, 39-43.

Liu, Chengsi, Q. Xiao, and Bin Wang, 2008: An Ensemble-based four-dimensional variational data assimilation scheme: Part I: Technical formulation and preliminary test. Mon. Wea. Rev., in press.

Davis, C. A., W. Wang, S. Chen, Y. Chen, K. Corbosiero, M. DeMaria, J. Dudhia, G. Holland, J. Klemp, J. Michalakes, R. Rotunno, and Q. Xiao, 2008: Prediction of landfalling hurricanes with the advanced hurricane WRF model. Mon. Wea. Rev., in press.

Xiao, Q., and J. Sun, 2007: Multiple radar data assimilation and short-range quantitative precipitation forecasting of a squall line observed during IHOP_2002. Mon. Wea. Rev. 135, 3381-3404.

Zhang, X.-Y., Q. Xiao, and Patrick F. Fitzpatrick, 2007: The impact of multi-satellite data on the initialization and simulation of Hurricane Lili’s (2002) rapid weakening phase. Mon. Wea. Rev., 135, 526-548.

Xiao, Q., Ying-Hwa Kuo, Juanzhen Sun, Wen-Chau Lee, D. M. Barker, and Eunha Lim, 2007: An approach of radar reflectivity data assimilation and its assessment with the inland QPF of Typhoon Rusa (2002) at landfall. J. Appl. Meteor. Climat., 46, 14-22.

Xu, J., Q. Xiao, X. Gao, and S. Sorooshian, 2006: The influence of assimilating rainfall derived from WSR-88D radar on the rainstorm forecasts over Southwest United States. J. Geophys. Res. – Atmosphere, 111, D13105, doi:10.1029/2005JD006650.

Xiao, Q., Ying-Hwa Kuo, Ying Zhang, D. M. Barker, and Duk-Jin Won, 2006: A tropical cyclone bogus data assimilation scheme in the MM53D-Var system and numerical experiments with Typhoon Rusa (2002) near landfall. J. Met. Soc. Japan, 84, 671-689.

Xiao, Q., Y.-H. Kuo, Juanzhen Sun, Wen-Chau Lee, Eunha Lim,Y.-R. Guo, D. M. Barker, 2005: Assimilation of Doppler radar observations with a regional 3D-Var system: Impact of Doppler velocities on forecasts of a heavy rainfall case. J. Appl. Meteor, 44, 768-788.

Gu, Jianfeng, Q. Xiao, Ying-Hwa Kuo, Dale M. Barker, Jishan Xue and Xiaoxing Ma, 2005: Assimilation and simulation of Typhoon Rusa (2002) using WRF system. Advances in Atmospheric Sciences, 22, 415-427.

Barker, D. M., W. Huang, Y.-R. Guo, A. J. Bourgeois, and Q. Xiao, 2004: A three-dimensional variational data assimilation system for MM5: Implementation and initial results. Mon. Wea. Rev., 132, 897-914.

Xu, J., X. Gao, Q. Xiao, Y. Hong and S. Sorooshian: 2004: An investigation of the Impact of Satellite-derived Rainfall Assimilation on Rainstorm Forecasting over the southwestern US. Geophysical Research Letters, 31, L1610.

Fu, Yunfei, Rucong Yu, Youping Xu, Qingnong Xiao, Guosheng Liu, 2003: Analysis on precipitation structures of two mid-range scale heavy rain systems by using TRMM PR and TMI. ACTA METEOROLOGICA SINICA, 64, 421-431.

Zhang X.-Y., Bin Wang, Z. Ji, Q. Xiao and Xin Zhang, 2003: Initialization and Simulation of a Typhoon Using 4-Dimensional Variational Data Assimilation: Research on Typhoon Herb (1996). Advances in Atmospheric Sciences, 20, 612-622.

Xiao, Q., X. Zou, M. Pondeca, M. Shapiro, C. Velden, 2002: Impact of GMS-5 and GOES-9 satellite winds on the prediction of a NORPEX extratropical cyclone. Mon. Wea. Rev., 130, 507-528.

Wang Bin, Z. Ji and Q. Xiao, 2001: Hamiltonian Algorithm for Solving the Dynamic Equations of Atmosphere. Chinese J. Compu. Phys., 18, 289-297.

Zou, X., Q. Xiao, Alan E. Lipton, and George D. Modica, 2001: A numerical study of the effect of GOES sounder cloud-cleared brightness temperatures on the prediction of Hurricane Felix. J. Appl. Meteor., 40, 34-55.

Xiao, Q., X. Zou, and Y.-H. Kuo, 2000: Incorporating the SSM/I derived precipitable water and rainfall rate into a numerical model: a case study for ERICA IOP-4 cyclone. Mon. Wea. Rev., 128, 87-108.

Xiao, Q., X. Zou and B. Wang, 2000: Initialization and simulation of a landfalling hurricane using a variational bogus data assimilation scheme. Mon. Wea. Rev., 128, 2252-2269.

Zou, X., and Q. Xiao, 2000: Studies on the initialization and simulation of a mature hurricane using a variational bogus data assimilation scheme. J. Atmos. Sci., 57, 836-860.

Zou, X., W. Huang, and Q. Xiao, 1998: A User's Guide to the MM5 Adjoint Modeling System, NCAR Technical Note. NCAR/TN-437+IA, National Center for Atmospheric Research, Boulder, CO, 93pp.

Xiao, Q., R. Wu and Y. Zhang, 1997: Dynamical influence of orography on frontogenesis, Chinese Journal of Atmospheric Science, 21, 143-150 (in English edition) or Vol. 21, 289-296 (in Chinese edition).

Pan, X and Q. Xiao, et al., 1997, A limited-area operational meso-alpha scale numerical forecasting system and its experiment, Chinese Journal of Atmospheric Science (Chinese edition), 21, 99-110.

Xiao, Q., and R. Wu, 1996: Gravity current fronts and their interaction with orography, ACTA METEOR. SINICA (Chinese edition), 54, 456-465.

Xiao, Q., W. Guo, and X. Zhou, 1996: Preliminary results from numerical experiments of a heavy rain process with PENN STATE/NCAR MM5, Advance in Atmospheric Sciences, 13, 539-547.

Xiao, Q., and R. Wu, 1995: Numerical study of orographical influence on air flow. ACTA METEOR. SINICA (Chinese edition), 53, 38-49.

Xiao, Q., Y. Zhang, and W. Li, 1995: Numerical study on evolution of frontal waves and cyclogenesis, Chinese Journal of Atmospheric Science (Chinese edition), 19, 465-474.

Xiao, Q., and R. Wu, 1995: A study of frontal motion over orography. Advances in Atmospheric Sciences, 12, 325-334.

Xiao, Q., 1994: Distortion and Occlusion of cold fronts under the influence of orography, ACTA METEOR. SINICA, 8, 440-449 (in English edition), or 52, 414-423 (in Chinese edition).

Xiao, Q., and D. Yin, 1993: Numerical Studies of precipitation affected by Kuo (1965,1974) and Anthes (1977) convective parameterization, Journal of Nanjing University (in Chinese), 29,172-179.

Xiao, Q., Z. Zhang, D. Yin, and S. Wei, 1992: Comparisons between two cumulus parameterization schemes with a 11-layer primitive equation model, Journal of Tropical Meteorology (in Chinese), 8, 372-377.

Xiao, Q., 1992: Numerical experiments of large-scale precipitation with11-layer primitive equation model, Scientia Meteorologica Sinica (in Chinese), 12, 179-187.

Xiao, Q., Z. Zhang, D. Yin, and S. Wei, 1991: Numerical simulation of a cyclone over the Jianghuai area and its mesoscale systems, Quarterly Journal of Applied Meteorology (in Chinese), 2, 346-354.

NON-REFEREED PUBLICATIONS AND CONFERENCE PRESENTATIONS

Xiao, Q. X. Zhang, James Done, Z. Liu, W. Wang, C. A. Davis, Jimy Dudhia, G. J. Holland, P. J. Fitzpatrick, Y. Li, C. Hill, and H. R. Winterbottom, 2008: Experiments on WRF hurricane initialization (WRF-HI) – An approach based on WRF variational data assimilation of remote-sensing and synthetic observations. Tropical Meteorology Special Symposium, 2008 AMS annual Conference, New Orleans, 20-24 January 2008.

Xiao, Q., X. Zhang, C. A. Davis, J. D. Tuttle, G. J. Holland, and P. J. Fitzpatrick, 2008: Impacts of airborne Doppler radar data assimilation on the forecasts of Hurricane Katrina (2005). 12th Conference on IOAS-AOLS, New Orleans, 20-24 January 2008.

Winterbottom, H., X. Zou and Q. Xiao, 2008: A composite analysis of tropical cyclone structure using GPS RO observations. 12th Conference on IOAS-AOLS, New Orleans, 20-24 January 2008.

Xiao, Q., and J. Sun, 2007: Multiple radar data assimilation and short-range quantitative precipitation forecasting of a squall line observed during IHOP_2002. 33^rd Conference on Radar Meteorology, Cairns, Australia, 5-8 August 2007.

Lim, E., Q. Xiao, J. Sun, P. J. Fitzpatrick, Y. Li, J. L. Dyer, 2007: The impact of Doppler radar data on rainfall forecast: A case study of a convective rainband event in Mississippi Delta using WRF 3D-Var. 22nd Conf. on Weather Analysis and Forecasting/18th Conf. on Numerical Weather Prediction. Park City, UT, 25-29 June 2007.

Fitzpatrick, P. J., Y. Li, E. Lim, Q. Xiao, C. Hill, J. Sun, 2007: The impact of radar data assimilation on a squall line in Mississippi. 22nd Conf. on Weather Analysis and Forecasting/18th Conf. on Numerical Weather Prediction. Park City, UT, 25-29 June 2007.

Chen, L., Q. Xiao, 2007: The evaluation of hurricane BDA scheme with WRF 3D-Var. 8th WRF Users' Workshop. Boulder, CO, 11-15 June 2007.

Barker, D. M., J. Bray, M. Demirtas, X.-Y. Huang, Z. Liu, H. Shao, Q. Xiao, 2007: Overview of recent developments and results from WRF-Var. 8th WRF Users' Workshop. Boulder, CO, 11-15 June 2007.

Xiao, Q., X.-Y. Zhang, C. Davis, J. Tuttle, G. Holland, P. J. Fitzpatrick, 2007: Hurricane initialization using airborne Doppler radar data for WRF. 8th WRF Users' Workshop. Boulder, CO, 11-15 June 2007.

Fitzpatrick, P. J., C. Hill, Y. Li, S. Bhate, Y. Lau, and Q. Xiao, 2007: A numerical study of the wind field expansion with Hurricane Katrina during a period of rapid intensification. 22nd Conf. on Weather Analysis and Forecasting/18th Conf. on Numerical Weather Prediction. Park City, UT, 25-29 June 2007.

Huang, X., Q. Xiao, X. Zhang, J. Michalakes, W. Huang, D. Barker, J. Bray, Z. Ma, T. Henderson, J. Dudhia, X.-Y. Zhang, D.-J. Won, Y. Chen, Y.-R. Guo, H.-C. Lin, Y.-H. Kuo, 2007: 4-Dimensional variational data assimilation for the weather research and forecasting model. 22nd Conf. on Weather Analysis and Forecasting/18th Conf. on Numerical Weather Prediction. Park City, UT, 25-29 June 2007.

Xiao, Q., J. Sun, W. C. Lee, E. Lim, J. Gu, S. Sugimoto, X. Zhang, Y. R. Guo, D. M. Barker, X. Y. Huang, and Y. H. Kuo, 2007: Variational Doppler Radar Data Assimilation for the Weather Research and Forecasting Model. 11th Symposium on Integrated Observing and Assimilation Systems for the Atmosphere, Oceans, and Land Surface, San Antonio, 14-18 January 2007.

Fitzpatrick, P. J., Q. Xiao, J. Sun, E. Lim, C. M. Hill, Y. Li, N. Tran, and J. L. Dyer, 2007: The impact of assimilating radar and SCAN data on a WRF simulation of a Mississippi Delta squall line. 11th Symposium on Integrated Observing and Assimilation Systems for the Atmosphere, Oceans, and Land Surface, San Antonio, 14-18 January 2007.

Fitzpatrick, P. J., Q. Xiao, G. J. Holland, Y. H. Kuo, J. J. Cione, and C. M. Hill, 2007: Analysis of Hurricanes Using Unmanned Aircraft Systems (UAS) and COSMIC Satellite Data. 11th Symposium on Integrated Observing and Assimilation Systems for the Atmosphere, Oceans, and Land Surface, San Antonio, 14-18 January 2007.

Hill, C. M, P. J. Fitzpatrick, Q. Xiao, J. Sun, Y. Li, and N. Tran, 2007: A HWRF numerical study of the wind field expansion with Hurricane Katrina during a period of rapid intensification. 11th Symposium on Integrated Observing and Assimilation Systems for the Atmosphere, Oceans, and Land Surface, San Antonio, 14-18 January 2007.

Xiao, Q., C. Davis, X. Zhang, J. Tuttle, G. Holland, and Y.-H. Kuo, 2007: Initialization of Hurricane Jeanne (2004) Using Airborne Doppler Radar Data. 11th Symposium on Integrated Observing and Assimilation Systems for the Atmosphere, Oceans, and Land Surface, San Antonio, 14-18 January 2007.

Huang, X.-Y., Q. Xiao, W. Huang, D. Barker, J. Michalakes, J. Bray, Y.-R. Guo, H.-C. Lin, and Y.-H. Kuo, 2006: Preliminary results of WRF 4D-Var. The Seventh International Workshop on Adjoint Applications in Dynamic Meteorology, Obergurgl, Tyrol, Austria, 8-13 October 2006.

Xiao, Q., Z. Ma, Wei Huang, X.-Y. Huang, D. M. Barker, Y.-H. Kuo, and J. Michalakes, 2006: Development of the WRF adjoint modeling system and its applications to the investigation of the May 2004 McMurdo Antarctica severe wind event. Antarctic Meteorological Observation, Modeling, and Forecasting Workshop, Boulder, CO, 13-15 June 2006.

Xiao, Q., and J. Sun, 2006: Short-range QPF of a squall line case during IHOP_2002 with multiple radar data assimilation. 2^nd International Symposium on Quantitative Precipitation Forecasting and Hydrology, Boulder, Co, 4–8 June 2006.

Barker, D. M., J. Bray, Y.-R. Guo, X.-Y. Huang, Z. Liu, S. Rizvi, and Q. Xiao, 2006: Status report on WRF-ARW's variational data assimilation system (WRF-Var). 7^th Annual WRF User’s Workshop, Boulder, CO, 19-22 June 2006.

Davis, C., W. Wang, Y. Chen, K. Corbosiero, Jimy Dudhia, Greg Holland, Joe Klemp, J. Michalakes, Richard Rotunno, Chris Snyder, Q. Xiao, Mark DeMaria and Shuyi Chen, 2006: Advanced research WRF developments for hurricane prediction. 7^th Annual WRF User’s Workshop, Boulder, CO, 19-22 June 2006.

Zhang, X., Q. Xiao, P. J. Fitzpatrick, 2006: The Impact of multi-satellite data on the initialization and simulation of Hurricane Lili's (2002) rapid weakening phase. 27^th Conference on hurricanes and tropical meteorology, Monterey, CA, 23-28 April 2006.

Xiao, Q., J. Sun, Wen-Chau Lee, Eunha Lim, Soichiro Sugimoto, Xiaoyan Zhang, Yong-run Guo, Dale M. Barker, Xiang-Yu Huang, and Ying-Hwa Kuo, 2006: Doppler radar data assimilation with WRF-Var: current status and future plan. 7^th Annual WRF User’s Workshop, Boulder, CO, 19-22 June 2006.

Huang, X.-Y., Q. Xiao, Wei Huang, Dale Barker, John Michalakes, John Bray, Z. Ma, Y.-R. Guo, Hui-Chuan Lin, and Y.-H. Kuo, 2006: Preliminary results of WRF 4D-Var. 7^th Annual WRF User’s Workshop, Boulder, CO, 19-22 June 2006.

Lin, Hsin-Hung, Pay-Liam Lin, Bill Kuo, and Q. Xiao, 2006: Impact of Doppler velocities assimilation on the initialization and simulation of three different precipitation systems. 7^th Annual WRF User’s Workshop, Boulder, CO, 19-22 June 2006.

Xiao, Q., Y.-H. Kuo, J. Sun, J. Gu, Eunha Lim, D. M. Barker, and Wen-Chau Lee, 2005: Assimilation of Doppler radar observations using WRF/MM5 3D-Var system and its impact on short-range QPF. World Weather Research Program Symposium on Now-casting and Very Short Range Forecasting, Toulouse, France, 5-9 September 2005.

Sugimoto, S., A. Crook, J. Sun, D. M. Barker, and Q. Xiao, 2005: Potential benefits of multiple-Doppler radar data to quantitative precipitation forecasting: assimilation of simulated data using the WRF 3D-Var system. World Weather Research Program Symposium on Now-casting and Very Short Range Forecasting, Toulouse, France, 5-9 September 2005.

Xiao, Q., Z. Ma, W. Huang, X.-Y. Huang, D Barker, Y.-H. Kuo and J. Michalakes, 2005: Development of the WRF tangent linear and adjoint models: Nonlinear and linear evolution of initial perturbations and adjoint sensitivity analysis at high-southern latitudes.6^th WRF user’s workshop, Boulder, Colorado, 27-30 June2005.

Huang, X.-Y., Q. Xiao, W. Huang, D. Barker, Y.-H. Kuo, J. Michalakes, and Z. Ma, 2005: The weather research and forecasting model based 4-dimensional variational data assimilation system. 6^th WRF user’s workshop, Boulder, Colorado, 27-30 June 2005.

Barker, D. M., Y.-R.Guo, W. Huang, S. Rizvi, Q. Xiao, Y.-H. Kuo, J. Gu, X.-Y. Huang, and M.-S. Lee,2005: WRF-Var – A unified variational data assimilation system for WRF. 6^thWRF user’s workshop, Boulder, Colorado, 27-30 June2005.

Zhang, X, Q. Xiao, P. Fitzpatrick, and Y.-H. Kuo, 2005: Four-dimensional variational data assimilation of satellite retrieval data for Hurricane Lili (2002). 6^thWRF user’s workshop, Boulder, Colorado, 27-30 June 2005.

Won, Duk-Jin, Eunha Lim,and Q. Xiao, 2005: Radar data assimilation in a regional model of KMA. 17^th Conference on Numerical weather Prediction, Washington DC, 1-5 August 2005.

Sugimoto, S., A. Crook, J, Sun, D. M. Barker, and Q. Xiao, 2005: Assimilation of multiple-Doppler radar data with WRF-3DVAR system: Preliminary results in observing system simulation experiments. Proceedings of the 11^th Conference on Mesoscale Processes, Albuquerque, NM, 22-28 October 2005.

Barker, D. M., Y.-H. Kuo, J. Bresch, Y.-R. Guo, Z. Liu, S. R. Rizvi, and Q. Xiao, 2005: Development of A Unified Three-Dimensional Variational (3D-Var) Data Assimilation System. Tech. Report for KMA, 46pp.December 2005.

Fitzpatrick J. P., Q. Xiao, Y. Lau, S. Bhates, N. Tran, E. Johnson, Y. Li and X. Zhang, 2006: The impact of Terra, Aqua, TRMM, AVHRR, and dropsonde data on Hurricane Lili simulations, 10^thSymposium on Integrated Observing and Assimilation Systems for the Atmosphere, Ocerans, and Land Surface (IOAS-AOLS), Atlanta, GA, 30 January 2006.

Xiao, Q., Y.-H. Kuo, J. Sun. W.-C. Lee, D. M. Barker, and Eunha Lim, 2004: Assimilation of Doppler radar observations and its impacts on forecasting of the landfalling typhoon Rusa (2002), Proceedings of the Third European Conference on Radar in Meteorology and Hydrology (ERAD), Vol. 2, 178-182.

Xiao, Q., Y.-H. Kuo, Y. Zhang, D. M. Barker, and D.-J. Won, 2004: Experiments of a typhoon bogussing scheme in the MM5 3D-Varcycling system, Proceedings of the 26^th Conference on Hurricanes and Tropical Meteorology, 598-599.

Xiao, Q., J. Gu, D. M. Barker, and Y.-H. Kuo:2004: Tropical cyclone initialization with Doppler radar data using a regional 3D-Var system and its application to Typhoon Rusa (2002) case, Preprint of the 5th WRF and 14^th MM5 User’s Workshop, 124-127.

Barker, D. M., M.-S. Lee, Y.-R. Guo, W. Huang, Q. Xiao, and R. Rizvi, 2004: WRF variational data assimilation development at NCAR. Preprint of the 5th WRF and 14th MM5 User’s Workshop, 119-123.

Xu, J., X. Gao, S. Sorooshian, and Q. Xiao, 2004: Impact of assimilating rainfall derived from radar and satellite on rainstorm forecasts over the Southwestern United States. Proceedings of the Eighth Symposium on Integrated Observing and Assimilation Systems for Atmosphere, Oceans, and Land Surface. 179-181.

Xiao, Q., J. Sun, W.-C. Lee, E. Lim, Y.-R. Guo, D. M. Barker, Y.-H. Kuo, 2003: Assimilation of Doppler radar observations with a regional 3D-Var system: A heavy rainfall case study. Proceedings of the 31st AMS International Conference on Radar Meteorology, Vol. 31, 165-168.

Xiao, Q., J. Sun, W.-C. Lee, E. Lim, Y.-R. Guo, D. M. Barker, Y.-H. Kuo, 2003: Assimilation of Doppler radial velocities using a regional 3D-Var system and its impact on mesoscale weather prediction over the Korean Peninsula. Preprints of the Thirteenth PSU/NCAR Mesoscale Model Users' Workshop, 101-104.

Barker, D. M.,Y.-R. Guo, Wei Huang, Q. Xiao, and R.Rizvi, 2003: The MM5 Implementation of 3DVAR. Preprints of the Thirteenth PSU/NCAR Mesoscale Model Users' Workshop, 93-96.

Barker, D. M., A. J. Bourgeois, Y.-R. Guo, W. Huang, and Q. Xiao, 2002: Initial Results Using WRF 3DVAR in MM5 Applications. Preprints of the Twelfth PSU/NCAR Mesoscale Model Users' Workshop, June 24-25, 2002.

Guo, Y.-R, D.-H. Shin, J.-H. Lee, Q. Xiao, D. M. Barker, and Y.-H. Kuo, 2002: Application of MM5 3DVAR System for Heavy Rain Case over Korea Peninsula. Preprints of the Twelfth PSU/NCAR Mesoscale Model Users' Workshop, June 24- 25, 2002.

Barker, D.M., Y.-R. Guo, W. Huang, and Q. Xiao, 2002: The development of a 3DVAR assimilation capability for the WRF model. Preprint on Third US-Korea Joint Workshop on Storm Scale and Mesoscale Weather Analysis and Prediction, 47-48,163pp.

Guo, Y.-R, D.-H. Shin, J.-H. Lee, Q. Xiao, D. M. Barker, and Y.-H. Kuo, 2002: Assimilation of KMA AWS data with the MM5 3DVAR system, and application for the 14 July 2001 heavy rain case. Preprint on Third US-Korea Joint Workshop on Storm Scale and Mesoscale Weather Analysis and Prediction, 49-52,163pp.

Xiao, Q., and X. Zou, 2001: User's Guide for the use of GOES-8, SSM/T, and SSM/T-2 Radiance Data in the MM5 4D-Var System. FSU tech. report, October, 2001.

Xiao, Q., X. Zou, F. D. Marks, and K. Park, 2001: Initialization and simulation of Hurricane Georges (1998): 4D-Var experiments with bogus data and model evaluation with airborne Doppler radar observations. Symposium on Precipitation Extremes: Prediction, Impacts, and Response, American Meteorological Society, Albuquerque, NM, 14-19 January 2001.

Xiao, Q. X. Zou, M. Shapiro, C. Velden, and M. Pondeca, 2000: Prediction of a NORPEX oceanic cyclone: Impact of initial conditions incorporating GMS water vapor winds and total ozone mapping spectrometer (TOMS) data. Preprint on 10th Conference on Satellite Meteorology and Oceanography, 14-15, American Meteorological Society, 481pp.

Zou, X., Q. Xiao, Alan E. Lipton, and George D. Modica, 1999: A numerical study of the effect of GOES sounder cloud-cleared brightness temperatures on the prediction of Hurricane Felix. Preprint on 10th Conference on Satellite Meteorology and Oceanography, 10-13, American Meteorological Society, 481pp.

Zou, X., and Q. Xiao: 1999: Initial structures within a mature hurricane vortex generated by a variational initialization scheme. AMS preprint: 23rd Conference on Hurricanes and Tropical Meteorology (Vol. II), 658-661.

Xiao, Q., and X. Zou, 1998: Variational bogus and numerical simulation of hurricane FRAN (1996), The eighth PSU/NCAR Mesoscale Model User's Workshop. 98-102.

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