Based on daily NCEP reanalysis data, OLR and satellite rainfall data, the characteristic of the activities of South China Sea summer monsoon (SCSSM) in 2004 were analyzed.

• 摘要利用NCEP逐日再分析资料、向外长波辐射(OLR)和卫星降水资料，分析了2004年影响南海夏季风活动的一些特徵。