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Misra, S., Piepmeier, J.R., Peng, J., Mohammed, P., Hudson, D., De Amici, G., Dinnat, E., Le Vine, D., Bindlish, R., and Jackson, T. (10-July-16)

In this paper we discuss the steps taken for the calibration and validation of the Soil Moisture Active Passive (SMAP) L-band radiometer. We discuss the use of multiple vicarious sources such as the global ocean mean and celestial cold-sky emissions along with various spacecraft maneuvers to calibrate out gain, offset, antenna pattern of the radiometer. We present initial validation comparison of SMAP brightness temperatures with other L-band missions.