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利用来自NCEP/NCAR的Sea Surface Temperature(SST)资料,对全球海域近150 a SST的季节特征和逐年变化趋势进行分析。结果表明:(1)全球大部分海域SST呈显著的逐年线性递增趋势,同时也表现出很大的区域性差异,线性递增趋势较强的海域主要集中在:北太平洋中部海域(0.003~0.006℃/a)、赤道中东太平洋(0.004~0.006℃/a)、南大西洋大部分海域(0.006~0.01℃/a)、南印度洋西部海域(0.006~0.009℃/a),仅在冰岛西南部海域、两极部分海域呈显著的递减趋势,与全球变暖的大背景相吻合;(2)全球部分海域的SST变化趋势由冬季占主导,部分海域的SST变化趋势由夏季占主导;(3)全球海域存在三大永久性暖池,且具有2.78~3.13 a、3.45 a、5.26~5.88 a的共同周期及100 a的长周期震荡。
Using the Sea Surface Temperature (SST) data from NCEP / NCAR, the seasonal characteristics and year-by-year trends of nearly 150-year SST in global waters were analyzed. The results show that: (1) SST presents a significant annual increasing trend in most parts of the world in a year, and also shows great regional differences. The sea areas with strong linear increasing trend are mainly concentrated in the central part of the northern Pacific Ocean (0.003 ~ 0.006 ℃ / a), the equatorial central and eastern Pacific (0.004-0.006 ° C / a), most of the South Atlantic (0.006-0.01 ° C / a) and the western South Indian Ocean (0.006-0.009 ° C / a) (2) The trend of SST in some parts of the world is dominated by winter, and the trend of SST in some sea areas is dominated by summer; (3) The global sea area There are three permanent warm pools with a common cycle of 2.78 ~ 3.13 a, 3.45 a and 5.26 ~ 5.88 a and a long-period shock of 100 a.