Modification of the Atmospheric Boundary Layer by a Small Island: Observations from Nauru
Modification of the Atmospheric Boundary Layer by a Small Island: Observations from Nauru
复制标题
一个小岛对大气边界层的改变：来自瑙鲁的观测
DOI：
10.1175/mwr3319.1
复制
发表时间：
2007
影响因子：
3.2
通讯作者：
R. M. Reynolds
中科院分区：
文献类型：
--
作者：
S. Matthews;J. Hacker;J. Cole;J. Hare;C. Long;R. M. Reynolds
摘要瑙鲁是热带太平洋的一个小岛，它产生的云羽可以长到100公里以上。本研究利用观测资料来研究产生这些云羽的岛屿对海洋大气边界层的中尺度扰动。在瑙鲁附近的两艘船只和岛上的仪器对表层进行了观测。利用飞机飞行对该岛上空的大气边界层结构进行了研究。使用遥感仪器对瑙鲁上空的云生成进行了研究。地面气象和辐射的日周期的特点是在瑙鲁西海岸（顺风）附近的一个点。地面气象和辐射的空间变化也使用地面和飞机测量检查。在白天，岛屿表面层比海洋表面层温暖，风速低于海洋。表面加热迫使一个热的内部边界层的增长，在…
Abstract Nauru, a small island in the tropical Pacific, generates cloud plumes that may grow to over 100-km lengths. This study uses observations to examine the mesoscale disturbance of the marine atmospheric boundary layer by the island that produces these cloud plumes. Observations of the surface layer were made from two ships in the vicinity of Nauru and from instruments on the island. The structure of the atmospheric boundary layer over the island was investigated using aircraft flights. Cloud production over Nauru was examined using remote sensing instruments. The diurnal cycles of surface meteorology and radiation are characterized at a point near the west (downwind) coast of Nauru. The spatial variation of surface meteorology and radiation are also examined using surface and aircraft measurements. During the day, the island surface layer is warmer than the marine surface layer and wind speed is lower than over the ocean. Surface heating forces the growth of a thermal internal boundary layer, within...