1. Seasonal Noise Versus Subseasonal Signal: Forecasts of California Precipitation During the Unusual Winters of 2015–2016 and 2016–2017 Wang, Shuguang; Anichowski, Alek J.; Tippett, Michael K.; Sobel, Adam H. 2017 Articles Precipitation variabilityAtmosphericsAtmospheric physicsEnvironmental sciencesWeather forecasting