Seasonal variations of the upper ocean in the western north pacific observed by an argo float
Seasonal variations of the upper ocean in the western north pacific observed by an argo float
复制标题
DOI：
10.1007/s10872-006-0070-6
复制
发表时间：
2006-07
影响因子：
2.3
通讯作者：
N. Iwasaka;F. Kobashi;Yosuke Kinoshita;Y. Ohno
中科院分区：
文献类型：
--
作者：
N. Iwasaka;F. Kobashi;Yosuke Kinoshita;Y. Ohno
2001年12月至2002年8月，利用Argo浮标对143°E ~ 150°E之间24°N附近的西北太平洋表层混合层进行了为期9个多月的季节性观测。结果表明，混合层在前两个月逐渐加深。1月底混合层达到最大深度，约130 m，此后混合层变化较大，有时混合层以下的密度跃层明显减弱，直至4月下旬形成夏季混合层。在其余的观察期间，保持了薄的表面混合层。热量收支分析表明，在几天到一个月的时间尺度上，垂直温度平流和水平温度平流是高层热量平衡中最主要的两个项。讨论了引起垂直温度平流的垂直运动。
A seasonal evolution of surface mixed layer in the western North Pacific around 24°N between 143°E and 150°E was observed by using an Argo float for more than 9 months, from December 2001 through August 2002. The result showed that the mixed layer deepened gradually in the first two months. It reached its maximum depth of about 130 m at the end of January, after which the mixed layer varied largely and sometimes the pycnocline below the mixed layer was much weakened until the summer mixed layer formed in late April. The thin surface mixed layer was maintained during the rest of the observation period. Heat budget analysis suggests that the vertical and horizontal temperature advections are the two most dominant terms in the heat balance in the upper layer on time scales from a few days to a month. The vertical motions that are possibly responsible for the vertical temperature advection are discussed.