The Dominance of perpendicular diffusion in modulating galactic cosmic rays in corotating interaction regions: observations of two last solar minima

Keyvan Ghanbari1, Vladimir A Florinski2, Xiaocheng Guo3, Qiang Hu1 and Richard A Leske4, (1)University of Alabama in Huntsville, Huntsville, AL, United States, (2)University of Alabama, Huntsville, AL, United States, (3)National Space Science Center, State Key Laboratory of Space Weather, Beijing, China, (4)CALTECH, Pasadena, CA, United States