WRFDA background blending with a spatial filter. Seminar. CWB, Taiwan. November 13, 2012. [pdf]

Assimilate wind direction and speed observations. Seminar. CWB, Taiwan. November 13, 2012. [pdf]

Regional 4D-Var. Lecture. JCSDA Summer Colloquium on Data Assimilation. Santa Fe, NM, July 24 - August 3, 2012. [ppt]

Radar data assimilation with WRF 3/4D-Var system. Talk. Radar data assimilation workshop. Seoul, July 18-19, 2012. [pdf]

Prepare for the operational 4D-Var data assimilation: parallelization, boundary condition control, multi-increments and precipitation assimilation. Talk. Radar data assimilation workshop. Seoul, July 18-19, 2012. [ppt]

WRFDA 2012 overview. Talk. WRF workshop. Boulder, June 25-29, 2012. [pdf]

Monitoring the observation impact with Taiwan Central Weather Bureau operational analysis/forecast system. Talk. Fifth WMO Workshop on the Impact of Various Observing Systems on NWP. Sedona, Arizona, USA, 22 - 25 May 2012. [pdf]

DTC Data Assimilation System Community Support and Tests: Status Report. Talk. AMS 2012, New Orleans, LA. 22-26 Jan 2012. [pdf]

WRFDA 2011 overview. Talk. WRF workshop. Boulder, June 20-24, 2011. [pdf]

WRFDA 2010 overview. Talk. WRF workshop. Boulder, June 21-25, 2010. [pdf]

Regional 4D-Var. Lecture. JCSDA Summer Colloquium on Data Assimilation. Stevenson, WA, July 7-17 2009. [pdf]

WRFDA 2009 overview. Talk. WRF workshop. Boulder, June 22-26, 2009. [pdf]

WRFDA 2008 overview. Talk. WRF workshop. Boulder, June 23-27, 2008. [pdf]

DFI and NWP. Lecture. WRF tutorial. Seoul. April 9-12, 2008. [pdf]

WRF 4D-Var. Seminar, NCAR, December 13, 2007. [pdf]