title:<hr>月平均<hr> title:<hr> title:<hr> title:<hr> MASK_1987-01_NCEP:nclink MASK_1987-02_NCEP:nclink MASK_1987-03_NCEP:nclink MASK_1987-04_NCEP:nclink MASK_1987-05_NCEP:nclink MASK_1987-06_NCEP:nclink MASK_1987-07_NCEP:nclink MASK_1987-08_NCEP:nclink MASK_1987-09_NCEP:nclink MASK_1987-10_NCEP:nclink MASK_1987-11_NCEP:nclink MASK_1987-12_NCEP:nclink title:<hr>季節平均<hr> title:<hr> title:<hr> title:<hr> MASK_1987-DJF_NCEP:冬(1986/12, 1987/01, 1987/02) MASK_1987-MAM_NCEP:春(1987/03, 1987/04, 1987/05) MASK_1987-JJA_NCEP:夏(1987/06, 1987/07, 1987/08) MASK_1987-SON_NCEP:秋(1987/09, 1987/10, 1987/11) title:<hr>年平均<hr> title:<hr> title:<hr> title:<hr> MASK_1987-ANN_NCEP:(1987/01-1987/12)