We explore the basic properties of the “climate” of the field of subinertial motions with periods of 2–12 days in the Baltic Sea. The calculations are performed using the output of the Rossby Center Ocean Model RCO with a spatial resolution of 2 nautical miles for 1961–2005. The field of such motions in the Baltic Sea is strongly asymmetric, with much more energy present in the eastern regions of the sea. Spatial distributions of 5-yr average amplitudes of fluctuations of the main and seasonal pycnocline, near-bottom velocity and kinetic and potential energy reflect this asymmetry and also exhibit extensive variability on scales of a few tens of kilometers. The majority of potential energy of such motions is concentrated in a narrow nearshore strip of the sea with a typical width of <20 km. The largest values of kinetic energy occur along the gently sloping seabed at intermediate depths. The areas of maximum of absolute nearbed velocities only partially match similar areas hosting very large kinetic energy or strong fluctuations of the location of the pycnocline. Both the major properties and spatial details of the discussed distributions exhibit almost no difference for the years 1961–1965 and 2000–2005, except for the maximum seabed velocities that are somewhat larger in 2000–2005 apparently because of exceptional storms in 2001 and 2005.

我们在波罗的海探索2-12天周期的亚惯性运动领域的“气候”的基本属性。使用1961–2005年的空间分辨率为2海里的Rossby中心海洋模型RCO的输出来执行计算。波罗的海的这种运动场非常不对称，在海的东部地区存在更多的能量。主和季节性比多克林的5年平均波动幅度的空间分布，近底部速度以及动能和势能反映了这种不对称性，并且在几十公里的尺度上也表现出较大的变异性。这种运动的大部分势能集中在狭窄的近海海带中，典型宽度小于20 km。动能的最大值出现在中等深度的缓坡海床上。近床速度绝对值的最大值区域仅部分匹配具有很大动能或比浓可可林位置剧烈波动的相似区域。讨论的分布的主要性质和空间细节在1961–1965年和2000–2005年几乎没有差异，除了2000–2005年的最大海底速度明显更大，这显然是由于2001年和2005年的暴风雨。