TY - Acta Geographica Sinica A1 - Yang Guishan, Shi Yafeng T1 - CHANGES IN THE FREQUENCIES OF TROPICAL CYCLONES AND THEIR RELATIONSHIPS TO SEA SURFACE TEMPERATURE IN THE NORTHWESTERN PACIFIC Y1 - 1999-01-15 00:00:00.0 JF - Acta Geographica Sinica JO - Acta Geographica Sinica SP - 22 EP - 29 VL - 54 IS - 1 UR - {https://www.geog.com.cn/EN/10.11821/xb199901003} N1 - 10.11821/xb199901003 ER -