Email: hsiao@ucar.edu
Phone: 303-497-8177
Postal Address: P.O. Box 3000, Boulder, CO, 80307-3000
Shipping Address: 3450 Mitchell Lane, Boulder, CO, 80307-3000

Research and Professional Interests

Hurricane initialization, Doppler radar data assimilation, Satellite data assimilation, WRF linear and adjoint model development and WRF 4DVAR, adjoint sensitivity and target observation strategy.

Recent Publications

To search my complete list of publications, please see The ESSL Publications Search.

Xiao, Q., Zhang, X., Davis, C. A., Tuttle, J. D., Holland, G. J., Fitzpatrick, P., 2009: Experiments of hurricane initialization with airborne doppler radar data for the advanced-research hurricane WRF (AHW) model. Monthly Weather Review. (In Press).

Xiao, Q., Kuo, Y., Ma, Z., Huang, W., Huang, X., Zhang, X., Barker, D. M., Michalakes, J., Dudhia, J., 2008: Application of an adiabatic WRF adjoint to the investigation of the May 2004 McMurdo, Antarctica, severe wind event. Monthly Weather Review, 136, doi: 10.1175/2008MWR2235.1, 3696-3713.

Xiao, Q., Kuo, Y., Ma, Z., Huang, W., Huang, X., Zhang, X., Barker, D. M., Michalakes, J., 2008: Development of the WRF adjoint modeling system and its application to the investigation of the May 2004 McMurdo Antarctica severe wind event. Monthly Weather Review, 136, doi: 10.1175/2008MWR2235.1, 3696-3713.

Xiao, Q., Chen, L., Zhang, X., 2008: Evaluations of BDA scheme using the Advanced Research WRF (ARW) model. Journal of Applied Meteorology and Climatology. (In Press).

Liu, C., Xiao, Q., Wang, B., 2008: An ensemble-based four-dimensional variational data assimilation scheme: Part I: Technical formulation and preliminary test. Monthly Weather Review, 136, doi: 10.1175/2008MWR2312.1, 3363-3373.

Huang, X., Xiao, Q., Barker, D. M., Zhang, X., Michalakes, J., Huang, W., Henderson, T., Bray, J., Chen, Y., Ma, Z., Dudhia, J., Guo, Y., Zhang, X., Won, D., Lin, H., Kuo, Y., 2008: Four-dimensional variational data assimilation for WRF: Formulation and preliminary results. Monthly Weather Review. (Submitted).

Davis, C. A., Wang, W., Chen, S., Chen, Y., Corbosiero, K., DeMaria, M., Dudhia, J., Holland, G., Klemp, J., Michalakes, J., Reeves, H., Rotunno, R., Xiao, Q., 2008: Prediction of landfalling hurricanes with the advanced hurricane WRF model. Monthly Weather Review, 136, doi: 10.1175/2007MWR2085.1, 1990-2005.

Xiao, Q., Lim, E., Won, D., Sun, J., Lee, W., Lee, M., Lee, W., Cho, J., Kuo, Y., Barker, D. M., Lee, D., Lee, H. S., 2008: Doppler radar data assimilation in KMA's operational forecasting. Bulletin of the American Meteorological Society, 89, doi: 10.1175/BAMS-89-1-39, 39-43.

Xiao, Q., Sun, J., 2007: Multiple radar data assimilation and short-range Quantitative Precipitation Forecasting of a squall line observed during IHOP 2002. Monthly Weather Review, 135, doi: 10.1175/MWR3471.1, 3381-3404.

Zhang, X., Xiao, Q., Fitzpatrick, P. J., 2007: The impact of multi-satellite data on the initialization and simulation of Hurricane Lili's (2002) rapid weakening phase. Monthly Weather Review, 135, doi: 10.1175/MWR3287.1, 526-548.

Xiao, Q., Kuo, Y., Sun, J., Lee, W., Barker, D. M., Lim, ., 2007: An approach of doppler reflectivity data assimilation and its assessment with the inland QPF of Typhoon Rusa (2002) at landfall. Journal of Applied Meteorology and Climatology, 46, doi: 10.1175/JAM2439.1, 14-22.

Xiao, Q., Kuo, Y., Zhang, Y., Barker, D. M., Won, D., 2006: A tropical cyclone bogus data assimilation scheme in the MM5 3D-Var system and numerical experiments with Typhoon Rusa (2002) near landfall. Journal of the Meteorological Society of Japan, 84(4), 671-689.

Kuo, Y., Zhang, X., Xiao, Q., Ma, Z., 2006: The impact of a GPS radio occultation sounding on the prediction of Hurricane Lilli (2002). Geophysical Research Letters. (Submitted).

Xu, J., Xiao, Q., Gao, X., Soroosh, S., 2006: The influence of assimilating rainfall derived from WSR-88D radar on the rainstorm forecasts over Southwest United States, J. Journal of Geophysical Research, 111, doi: 10.1029/2005JD006650, D13105.

Xiao, Q., Kuo, Y., Sun, J., Lee, W., Lim, E., Guo, Y., Barker, D. M., 2005: Assimilation of Doppler radar observations with a regional 3D-VAR system: impact of Doppler velocities on forecasts of a heavy rainfall case. Journal of Applied Meteorology 1989-2005 (After 2005 - Journal of Applied Meteorology and Climatology), 44, 768-788.

Related Links

• My CV
• Recent publications

Shared Files

• Airborne Doppler radar data assimilation for hurricanes - Mon. Wea. Rev., 2009.
• Bogus data assimilation (BDA) with WRF - J. Appl. Meteor. Climat., 48, 680-689, 2009.
• A BAMS paper on Doppler radar data assimilation - Bull. Amer. Met. Soc., 89, 39-43, 2008.
• An ensemble-based four-dimensional variational data assimilation scheme Part I - Mon. Wea. Rev., 136, 3367-3373., 2008.
• An ensemble-based four-dimensional variational data assimilation scheme Part II - Mon. Wea. Rev., 137, 1687-1704., 2009.
• WRF Adjoint sensitivity analysis for an Antarctic severe windstorm - Mon. Wea. Rev., 136, 3696-3713., 2008.
• Hurricane Lili's (2002) Demise - A recent study on hurricane initialization with 4D-Var
• News on Hurricane Lili's study
• Hurricane initialization with 3D-Var - J. Meteor. Soc. Japan, 84, 671-689, 2006.
• Multiple Doppler radar data assimilation - Mon. Wea. Rev., 135, 3381-3404, 2007.
• Doppler radar data assimilation (reflectivity) - J. Appl. Meteor. Climat., 46, 14-22.
• Doppler radar data assimilation (radial velocity) - J. Appl. Meteor., 44, 768-788.
• Study on a NORPEX cyclone - Mon. Wea. Rev., 130, 507-528.
• MM5 4DVAR hurricane initialization - Mon. Wea. Rev., 128, 2252-2269.
• SSM/I data assimilation - Mon. Wea. Rev., 128, 87-108.