Environmental Physics Laboratory, Universidade de Vigo, Ourense, Spain.
PLoS One. 2012;7(12):e50666. doi: 10.1371/journal.pone.0050666. Epub 2012 Dec 4.
Temperature is observed to have different trends at coastal and ocean locations along the western Iberian Peninsula from 1975 to 2006, which corresponds to the last warming period in the area under study. The analysis was carried out by means of the Simple Ocean Data Assimilation (SODA). Reanalysis data are available at monthly scale with a horizontal resolution of 0.5° × 0.5° and a vertical resolution of 40 levels, which allows obtaining information beneath the sea surface. Only the first 21 vertical levels (from 5.0 m to 729.35 m) were considered here, since the most important changes in heat content observed for the world ocean during the last decades, correspond to the upper 700 m. Warming was observed to be considerably higher at ocean locations than at coastal ones. Ocean warming ranged from values on the order of 0.3 °C dec(-1) near surface to less than 0.1 °C dec(-1) at 500 m, while coastal warming showed values close to 0.2 °C dec(-1) near surface, decreasing rapidly below 0.1 °C dec(-1) for depths on the order of 50 m. The heat content anomaly for the upper 700 m, showed a sharp increase from coast (0.46 Wm(-2)) to ocean (1.59 Wm(-2)). The difference between coastal and ocean values was related to the presence of coastal upwelling, which partially inhibits the warming from surface of near shore water.
从 1975 年到 2006 年，伊比利亚半岛西部沿海和海洋地区的温度呈现出不同的趋势，这与研究区域的最后一次变暖期相对应。分析是通过简单海洋数据同化（SODA）进行的。再分析数据每月提供一次，水平分辨率为 0.5°×0.5°，垂直分辨率为 40 层，这允许获取海面以下的信息。这里只考虑了前 21 个垂直层（从 5.0 米到 729.35 米），因为过去几十年世界海洋中观测到的热含量最重要的变化，对应于上层 700 米。海洋地区的升温明显高于沿海地区。海洋升温范围从近表面的 0.3°C dec(-1)到 500 米以下的不到 0.1°C dec(-1)，而沿海升温近表面接近 0.2°C dec(-1)，在 50 米左右的深度迅速下降到 0.1°C dec(-1)以下。上层 700 米的热含量异常显示出从海岸（0.46 Wm(-2))到海洋（1.59 Wm(-2))的急剧增加。沿海和海洋值之间的差异与沿海上升流的存在有关，上升流部分抑制了近岸水表面的变暖。
