Aerosol Data Assimilation

14. Liu, Z., C.S. Schwartz and H.-C. Lin, 2014: Comparison of 3DVAR, EnKF and Hybrid data assimiation techniques for aerosol analyses and forecasts, 15th WRF Users Workshop, 25 June, 2014. Boulder. url

13. Liu, Z., 2013: Aerosol data assimiation using GSI and WRF/Chem-GOCART, GSI Tutorial lecture, 7 August, 2013. Mayrland. url

12. Liu, Z., and H.-C. Lin, 2013: Assimilating visible-band MODIS radiance for regional air-quality analysis and forecast, 17th Conference on Integrated Observing and Assimilation Systems for the Atmosphere, Oceans, and Land Surface (IOAS-AOLS), Austin, TX, 93th AMS annual meetings. 5-10 January 2013. url

11. Liu, Z. et al., 2012: 3DVAR assimilation of MODIS aerosol optical depth for regional air-quality analysis and prediction using WRF/Chem model. CMOS/AMS Congress 2012, Montreal, Canada. 29 May - 1 June, 2012. url

10. Liu, Z., et al., 2012: Synergic Assimilation of Surface Particulate Matter and MODIS Aerosol Optical Depth. 14 th Conference on Atmospheric Chemistry. 23-26 January 2012, New Orleans, LA, 10.1. url pdf

9. Liu, Z., 2011: Aerosol data assimilation with the WRF/Chem for air quality analysis and forecast. Invited semi nars at the University of Toronto, York University, and Environment Canada. Toronto, Canada. 21, 23, 24 November 2011. pdf

8. Liu, Z., et al., 2011: Variational assimilation of MODIS AOD and surface PM2.5. The 48th Oholo Conference on e merging remote sensing techniques and associated modeling for air pollution applications. Eilat, Israel. 6-10 November 2011. pdf

7. Liu, Z., Q. Liu, H-C. Lin and C. Schwartz, 2011: Variational assimilation of MODIS aersosol optical depth over east Asia region. The 9th Workshop on Adjoint Model Applications in Dynamic Meteorology. Cefalu, Sicily, Italy. 10-14 October 2011. pdf

6. Liu, Z., 2011: Variational assimilation of MODIS AOD with WRF/Chem: Application to a Chinese dust storm. Invit ed seminar at the Nanjing University, Nanjing, China. 20 September 2011.

5. Liu, Z., 2011: Variational assimilation of MODIS aerosol optical depth with the WRF/Chem model: Application to an East Asia dust storm. Invited seminar at the Seoul National University, Seoul, Korea. 1 September 2011.

4. Liu, Z., Q. Liu, H.-C. Lin, C. S. Schwartz, and Y.-H. Lee, 2011: Variational assimilation of MODIS aerosol opt ical depth using GSI: Application to a dust storm case over East Asia region. GSI Community Workshop and Tutorial, Bou lder, CO.

3. Liu, Z., Q. Liu, H.-C. Lin, C. S. Schwartz, and Y.-H. Lee, 2011: Assimilating MODIS aerosol optical depth usi ng WRF/Chem and GSI: Application to a Chinese dust storm. Preprints, 12th WRF Users' Workshop, Boulder, CO, National C enter for Atmospheric Research, 8A.4. pdf

2. Liu, Z., Q. Liu, H.-C. Lin, C. S. Schwartz, and Y.-H. Lee, 2011: Assimilating MODIS AOD with WRF-Chem a nd GSI. JCSDA 9th Workshop on Satellite Data Assimilation, College Park, MD. pdf

1. Liu Z., Q. Liu, H.-C. Lin, C. S. Schwartz, and Y.-H. Lee, 2010: Variational assimilation of MODIS aerosol opt ical depth over East Asia, 1st Asia/Oceania Meteorological Satellite Users' conference, Beijing, China.

Arctic Reanalysis

5. Liu, Z. et al., 2012: WRF Atmospheric Data Assimilation: Lessons Learned from Arctic System Reanalysis. the 4th WCRP International Conference on Reanalyses (ICR4), 7-11 May 2012, Siver Spring, Maryland, USA. url

4. Liu, Z., et al., 2011: Atmospheric Data Assimilation with WRF-3DVAR: lessons learned from ASR. The Workshop on Polar simulations with the WRF model. Columbus, Ohio, USA. 2-3 November 2011. pdf

3. Liu, Z., H.-C. Lin, Y.-H. Kuo, D. Bromwich, and L. Bai, 2011: Atmosphere and surface analysis over Northern hi gh-latitude region using the WRF model and its data assimilation system, 11th Conference on Polar Meteorology and Ocea nography, Boston, MA. American Meteorological Society. url pdf

2. Liu, Z., H.-C. Lin, W. Wang, T.-K. Wee, M. Barlage, Y.-H. Kuo, D. Bromwich, L. Bai, K. Hines, and S.-H. Wang, 2010: Towards a regional reanalysis over northern high-latitude regions with the WRF model. 11th WRF Users' workshop, Boulder, CO, 3A.6. pdf

1. Liu, Z., H.-C. Lin, and Y.-H. Kuo, 2010: Radiance Assimilation over Northern High Latitude Regions with the WR F model. 17th International TOVS Study Conferences, Monterey, CA. pdf

Radiance DA with EnKF method

6. Liu, Z., C. S. Schwartz, C. Snyder, and S.-Y. Ha, 2012: Impact of assimilating AMSU-A radiances on forecasts of 2008 Atlantic tropical cyclones initialized with a limited-area ensemble Kalman filter. CMOS/AMS Congress 2012, Montreal, Canada. 29 May - 1 June, 2012. url

5. Liu, Z., C. S. Schwartz, C. Snyder, and S.-Y. Ha, 2012: Impact of assimilating AMSU-A radiances on 2008 Atlantic tropical cyclones initialized with a limited-area ensemble Kalman filter. 5th Ensemble Kalman Filter Workshop, Rensselaerville, New York. 21-24 May, 2012. ppt

4. Liu, Z. et al., 2012: Impact of assimilating AMSU-A radiances on 2008 Atlantic tropical cyclones initialized with a limited-area ensemble Kalman filter. The 18th International TOVS Study Conference (ITSC-18) Toulouse, France. 21-27 March, 2012. url

3. Liu, Z., 2011: Radiance data assimilation with EnKF: Application to Hurricane. Invited seminar at the Nanjing University of Information Science & Technology (NUIST), Nanjing, China. 21 September 2011.

2. Liu, Z., C. S. Schwartz, Y. Chen, and X.-Y. Huang, 2010: Radiance data assimilation with an ensemble Kalman filter. European Geosciences Union General Assembly, Vienna, Austria.

1. Liu, Z., C. S. Schwartz, Y. Chen, and X.-Y. Huang, 2010: Satellite Radiance Assimilation with an Ensemble Adjustment Kalman Filter. 4th Ensemble Kalman Filter Workshop, Rensselaerville, New York. pdf

Radiance DA with Variational method

8. Liu, Z. et al, 2013: Assimilation of hyper-spectral infrared radiances using Principal Component-based radiative transfer model, Special Symposium on the Joint Center for Satellite Data Assimilation, Austin, TX, 93th AMS annual meetings. 5-10 January 2013. url

7. Liu, Z. et al., 2012: Assimilation of hyperspectral infrared radiances using Principal Component-based radiative transfer model. NASA Sounder Science Team Meeting. 13-16 November 2012, Greenbelt, Maryland. url

6. Liu, Z.,H.-C. Lin,X. Liu, and W. Wu, 2012: Assimilation of hyperspectral infrared radiances using Principal Component-based radiative transfer model. NASA Sounder Science Team Meeting. 13-16 November 2012, Greenbelt, Maryland. pdf

5. Liu, Z.,H.-C. Lin, C. S. Schwartz, and Y.-H. Kuo, 2012: On the Bias-Correction Strategy of Radiance Data Assimilation with the Limited-Area Model. the 13th WRF Users' Workshop, June 26 - 29, 2012. Boulder, CO, USA. pdf

4. 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

3. Liu, Z., 2008: Radiance Data Assimilation for WRF Model: Overview and Results, Joint Center for Satellite Data Assimilation (JCSDA) 6th Workshop on Satellite Data Assimilation, Baltimore, MD. pdf

2. Liu, Z., J. Bray, J. Xu, H.-C. Lin, T. Vukicevic, and D. M. Barker, 2007: Update of Radiance Assimilation in WRF-Var. 8th WRF Users' Workshop, Boulder, CO, National Center for Atmospheric Research. pdf

1. 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

WRFDA Tutorial Lectures

Radiance Data Assimilation 2012-July, 2011-July, 2010-Aug, 2010-Feb, 2009-July

Hybrid 3DVAR/Ensemble Data Assimilation 2012-July, 2011-July, 2010-Aug, 2010-Feb