Physical versus biological spring transition: 2005

摘要: [1] In 2005, the onset of spring conditions in physics coastal ocean (lowered sea level, spin-up vertically-sheared equatorward jet) came about 50 days later than average off Newport Oregon, on May 24. There was a further delay before subsurface upwelled water penetrated into anomalously stratified surface layer, becoming most available for biological activity. The warm anomaly temperature which provided cap observed at mid-shelf locations from Washington to central California, but it ended sooner south Oregon. Biological impacts these delays several trophic levels have been reported.