- Assimilation of GOES-ABI radiance data, contributed by
                    Jonathan J. Guerrette, Deqin Li, & Zhiquan (Jake) Liu. See 
		    here for more details. 
		
 
		
		
		- Assimilation of lightning data, contributed by
                    Zhixiong Chen, Fujian Normal University, China. See
                    here for more details.
		
		Chen, Z., Sun, J., Qie, X., Zhang, Y., Ying, Z., Xiao, X., & Cao, D. (2020). 
		A method to update model kinematic states by assimilating satellite-observed 
		total lightning data to improve convective analysis and forecasting. 
		Journal of Geophysical Research: Atmospheres, 125,
                e2020JD033330. https://doi.org/10.1029/2020JD033330
                
                 
              
              
                - Addition of a background-dependent hydrometeor retrieval scheme for indirect 
		radar reflectivity assimilation, contributed by Haiqin Chen (Nanjing University, China) and
		Tao Sun	(NSF NCAR/MMM). See
		here for more details.
                
 
                
		Chen, H., Gao, J., Wang, Y., Chen, Y., Sun, T., Carlin, J. and Zheng, Y., 2021. Radar reflectivity data assimilation method based on background‐dependent hydrometeor retrieval: Comparison with direct assimilation for real cases. Quarterly Journal of the Royal Meteorological Society, 147(737), pp.2409-2428.
                
                
		Chen, H., Chen, Y., Gao, J., Sun, T. and Carlin, J.T., 2020. A radar reflectivity data assimilation method based on background-dependent hydrometeor retrieval: An observing system simulation experiment. Atmospheric research, 243, p.105022.
                
              
              For instructions on compiling and running the latest version of WRFDA, please refer to the updated User's Guide