The NASA POWER SSE: Deriving the Direct Normal Counterpart from the CERES SYN1deg Hourly Global Horizontal Irradiance during Early 2000 to Near Present

Taiping Zhang, Science Systems and Applications, Inc., Lanham, United States, Paul W Stackhouse Jr, NASA Langley Research Center, Hampton, VA, United States and David J Westberg, Science Systems and Applications, Inc. Hampton, Hampton, VA, United States