Liu, Z., C. S. Schwartz, C. Snyder, and S.-Y. Ha, 2012: Impact of assimilating AMSU-A radiances on forecasts of 2008 Atlantic tropic al cyclones initialized with a limited-area ensemble Kalman filter. Mon. Wea. Rev., 140 , 4017-4034. ams pdf
Wee, T. K., Y. H. Kuo, D.-K. Lee, Z. Liu, W. Wang, and S.-Y. Chen, 2012: Two Overlooked Biases of the Advanced Research WRF (ARW) Model in Geopotential Height a nd Temperature. Mon. Wea. Rev., 140 , 3907-3918. ams
Barker, D. M., X.-Y. Huang, Z. Liu, T. Auligne, X. Zhang, S. Rugg, A. A. AL KATHERI, A. Bourgeios, J. Bray, Y. Chen, M. Demirtas, Y. Guo, T. Henderson, W. Huang, H.-C. Lin, J. Michalakes, S. Rizvi, X.-Y. Zhang, 2011: The Weather Research and Forecasting (WRF) Mode l's Community Variational/Ensemble Data Assimilation System: WRFDA. Bull. Amer. Meteor. Soc., 93 , 831-843. ams
Schwartz, C. S., Z. Liu, H.-C. Lin, and S. McKeen, 2012b: Simultaneous three-dimensional variational assimilation of surface fine par ticulate matter and MODIS aerosol optical depth. J. Geophys. Res., 117 , D13202, doi:10.1029/2011JD017383. pdf
Schwartz, C. S., Z. Liu, Y. Chen, and X.-Y. Huang, 2012a: Impact of assimilating microwave radiances with a limited-area ensemble dat a assimilation system on forecasts of typhoon Morakot. Wea. Forecasting., 27 , 424-437. doi: http://dx.doi.org/10.1175/WAF-D-11-00033.1 ams pdf
Liu, Z., Q. Liu, H.-C. Lin, C. S. Schwartz, Y.-H. Lee, and T. Wang, 2011: Three-dimensional variational assimilation of MODIS aerosol optical depth: Implementation and application to a dust storm over East Asia. J. Geophys. Res., 116 , D23206, doi:10.1029/2011JD016159. pdf
He, W., Z. Liu, and H. Chen, 2011: Influence of surface temperature and emissivity on AMSU-A assimilation over land. Acta Meteor. Sinica, 25(5) , 547-557. doi: 10.1007/s13351-011-0501-1. pdf
Lu, Q., W. Zhang, P. Zhang, X. Wu, F. Zhang, Z. Liu, and D. M. Barker, 2010: Monitoring the 2008 cold surge and frozen disasters snowstorm in South China based on regional ATOVS data assimilation. Sci. China Earth Sci., 53 , 1216-1228. doi: 10.1007/s11430-010-3040-1. pdf
Xu, J., S. Rugg, L. Brerle, and Z. Liu, 2009: Weather forecast by the WRF-ARW model with GSI data assimilation system in the complex terrain areas of southwest Asia. Wea. Forecasting., 24 , 987-1008. pdf
Xue J., Zhuang S., Zhu G., Zhang H., Z. Liu, Liu Y., and Zhuang Z., 2008: Scientific design and preliminary results of three-dimensional variational data assimilation system of GRAPES. China Science Bulletin, No. 22, Vol. 53, 3446-3457. Zhu G., Xue J., Zhang H. and Z. Liu, Zhuang S., and Dong P., 2008: Direct Assimilation of satellite radiance data in GRAPES variational assimilation system. China Science Bulletin, No. 22, Vol. 53, 3465-3469. Liu, Z., Zhang F., Wu, X. and Xue, J. 2007: A regional ATOVS radiance-bias correction scheme for radiance assimilation (in Chinese). Acta Meteorologica Sinica, No. 1, Vol. 65, 113-123Liu, Z., and F. Rabier, 2003: The potential of high-density observations for numerical weather prediction: A study with simulated observations. Q. J. R. Meteorol. Soc., 129 , 3013-3035. pdf
Liu, Z., and F. Rabier, 2002: The interaction between model resolution, observation resolution and observation density in data assimilation: A one-dimensional study. Q. J. R. Meteorol. Soc., 128 , 1367-1386. pdf
Zhang, Y., Z. Liu, C. S. Schwartz, H.-C. Lin, and X.-Y. Haung, 2012: The impacts of Saharan Air Layer on the Atlantic Tropical Storms: A Case Study using WRF/Chem. Preprints, 13th WRF Users' Workshop, Boulder, CO, National Center for Atmospheric Research, P40. pdf
Schwartz, C. S., Z. Liu, 2012: Bias correction and assimilation of microwave radiance measurements over the Antarctic. 16th Symposium on IOAS-AOLS, 23-26 January 2012, New Orleans, LA, 10.1. pdf
Liu, Z., Q. Liu, H.-C. Lin, C. S. Schwartz, and Y.-H. Lee, 2011: Assimilating MODIS aerosol optical depth using WRF/Chem and GSI: Application to a Chinese dust storm. Preprints, 12th WRF Users' Workshop, Boulder, CO, National Center for Atmospheric Research, 8A.4. pdf Liu, Z., H.-C. Lin, Ying-Hwa Kuo, Dave H. Bromwich, and L. Bai, 2011: Data assimilation over Northern polar region using WRF and WRFDA. Preprints, 12th WRF Users' Workshop, Boulder, CO, National Center for Atmospheric Research, 7B.7 pdf Schwartz, C. S., and Z. Liu, 2011: Assimilating satellite microwave radiance measurements over the Antarctic. Preprints, 12th WRF Users' Workshop, Boulder, CO, National Center for Atmospheric Research, 7B.1. pdf Schwartz, C. S., Z. Liu, Y. Chen, and X.-Y. Huang, 2011: Satellite radiance data assimilation with a limited-area ensemble Kalman filter and 3D-Var analysis system. Preprints, 15th Symposium on Integrated Observing and Assimilation Systems for the Atmosphere, Oceans and Land Surface, Seattle, WA, Amer. Meteor. Soc., 5.5. pdf Mizzi, A.P., Z. Liu, and X.Y. Huang, 2011: A Hybrid GSI/ETKF Data Assimilation Scheme for WRF/ARW. 15th Symposium on Integrated Observing and Assimilation Systems for the Atmosphere, Oceans, and Land Surface; and the 24th Conference on Weather and Forecasting/20th Conference on Numerical Weather Prediction (J16.1), Seattle, Washington. pdf Schwartz, C. S., Z. Liu, Y. Chen, and X.-Y. Huang, 2010: Studying typhoon Morakot with a coupled WRFDA-DART system. Preprints, 11th WRF Users' Workshop, Boulder, CO, National Center for Atmospheric Research, 3A.11. pdf Liu Z., Zhang X., Auligne T., Lin H.-C., 2009: Variational Analysis of Hydrometeors with Satellite Radiance Observations: a Simulated Study. Preprints, 10th WRF Users Workshop, Boulder, CO, National Center for Atmospheric Research, 2A.01. pdf Shao H., Z. Liu, T. Auligne, D. M. Barker, J. Powers, and X.-Y. Huang, 2008: Impact Studies of Satellite Observations in The Antarctic Mesoscale Prediction System: AMSU-A Radiance Measurements. Preprints, 9th WRF Users' Workshop, Boulder, CO, National Center for Atmospheric Research. pdf Xiao Q., E. Lim, X. Zhang, J. Sun, and Z. Liu, 2008: Doppler Radar Data Assimilation with WRF 3D-VAR: IHOP Retrospective Studies. Preprints, 9th WRF Users' Workshop, Boulder, CO, National Center for Atmospheric Research. pdf Liu Z. and Barker D. M., 2006: Radiance Assimilation in WRF-Var: Implementation and Initial Results, Preprints, 7th WRF Users' Workshop, Boulder, CO, National Center for Atmospheric Research. pdf Liu Z. and Qi C., 2005: Robust Variational Inversion with simulated ATOVS radiances, Preprints, ITSC-14 Proceedings, Beijing, China. pdf Rabier F. and Liu Z., 2003: Variational Data Assimilation: Theory and Overview. ECMWF seminar proceedings on Recent developments in data assimilation for atmosphere and ocean, ECMWF, Reading, UK. pdf