Publication - Journal Article Probable causes of the abnormal ridge accompanying the 2013–2014 California drought: ENSO precursor and anthropogenic warming footprint DOI https://doi.org/10.1002/2014gl059748 Journal Article Geophysical Research Letters, vol. 41, iss. 9, pp. 3220-3226, 2014 Authors S.‐Y. Wang, Lawrence Hipps, Robert R Gillies, Jin‐Ho Yoon Language English