Variations of the Kuroshio Oyashio Extension during cold season precede spring precipitation anomalies over the Pacific Northwest

Youngji Joh, Princeton University, Princeton, United States; NOAA/GFDL, Princeton, United States, Thomas L Delworth, NOAA/GFDL, Princeton, NJ, United States, Andrew Thorne Wittenberg, NOAA GFDL, Princeton, NJ, United States, Xiaosong Yang, NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States, Anthony John Rosati, Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States, Nathaniel C Johnson, NOAA Geophysical Fluid Dynamics Laboratory, Princeton, United States and Liwei Jia, NOAA/Geophysical Fluid Dynamics Laboratory, Princeton, United States; University Corporation for Atmospheric Research, Boulder, CO, United States