Dots for shadings indicate the 90% confidence level. (b),(d),(f) As in (a),(c),(e), but for JFM(0) precipitation anomaly (shading units: mm day −1). Shadings for contour indicate the 90% confidence level. Vectors only depict the part exceeding 0.2 m s −1. Shadings for contours indicate the 90% confidence level.
Vectors in (b) only depict the part exceeding the 90% confidence level.Īs in Fig. Vectors in (a) only depict the part exceeding 0.5 m 2 s −2. Shadings for contours in (a) and dots for shadings in (c) indicate the 90% confidence level.
The contours in (c) represent the background storm track with intervals at 60, 80, and 100 m. (b),(d),(f) As in (a),(c),(e), but for precipitation anomaly (shading units: mm day −1). The contours represent the background wind with intervals at 20, 30, and 40 m s −1. Vectors only depict the part exceeding the 90% confidence level. (b),(d),(f) As in (a),(c),(e), but for 250-hPa geopotential height anomaly (contour interval: 30 m). The station-based NAO index ( Hurrell 1995) in JFM(0) (January–March) for CP (red) and EP (blue) La Niña since 1900 during the different phases of PDO. Filled dots indicate the 90% confidence level. Note that (−1) represents the year before the mature phase of La Niña (0) represents the year during the mature phase of La Niña. Dots for shadings indicate the 90% confidence level according to a two-tailed Student’s t test. SST (shading units: ☌) anomaly in D(−1)JF(0) for (a) CP, (b) EP, and (c) mixed La Niña winter since 1950.