Variation among in situ soil moisture upscaling approaches for SMAP calibration/validation: implications for estimations of retrieval bias

Aaron A Berg1, Tracy L Rowlandson2, Adam Bonnycastle3 and William Woodley3, (1)University of Guelph, Department of Geography, Environment and Geomatics, Guelph, ON, Canada, (2)University of Guelph, Guelph, ON, Canada, (3)University of Guelph, Department of Geography, Guelph, ON, Canada