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Jianjun Xu is currently a research professor in the College of Science, George Mason University, supported by National Environmental Satellite, Data, and Information service NOAA/NESDIS/STAR. His expertise is "mesoscale numerical modelling, satellite data assimilation, satellite remote sense and sun-earth's climate connection, decadal climate change and Air-Sea interaction, hydrometeorology."

Jianjun Xu received his bachelor and master degrees in atmospheric sciences from Nanjing University in China and a PhD degree from Nanjing Institute of Meteorology. He worked as postdoctoral researcher in the hydrology program in New Mexico Institute of Mining and Technology during 2000-2002, a research associate in the department of hydrology and water resource in University of Arizona during 2002-2004, and a project scientist II of UCAR in Joint Center for Satellite Data Assimilation (JCSDA) during 2004-2009.

Dr. Xu has been working in meteorology and hydrology for around 25 years. He has published over 80 papers in professional journals. He has not only mastered all kinds of statistical methods for data analysis, but can also skilfully use the global/regional model (GFS, WRF), Radiative Transfer Model (CRTM) and data assimilation algorithm (NCAR WRF-VAR, NCEP GSI, MM5 4DVAR).

Recent work areas include:

• Satellite data application and solar-climate change;
• Mesoscale modeling and satellite data assimilation;
• Precipitation and land surface processes;
• Monsoon, ENSO and interdecadal climate variability

E-mail: Jianjun.Xu@noaa.gov