CIMAR-5: A Snapshot of the Lower Troposphere over the Subtropical Southeast Pacific.
CIMAR-5: A Snapshot of the Lower Troposphere over the Subtropical Southeast Pacific.
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CIMAR-5：副热带东南太平洋上空对流层低层的快照。
DOI：
10.1175/1520-0477-82.10.2193
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发表时间：
2001
影响因子：
8
通讯作者：
P. Minnis
中科院分区：
文献类型：
--
作者：
R. Garreaud;J. Rutllant;J. Quintana;Jorge Carrasco;P. Minnis
摘要 南美洲亚热带西海岸广泛而持久的层积云（SCu）在区域和全球气候以及沿海天气中发挥着重要作用。与其他亚热带地区一样，SCu 形成于海洋边界层 (MBL) 的顶部，其边界是相对寒冷的海洋和大规模的沉降反转。然而，该地区对流层低层的结构和变化的细节在很大程度上还是未知的。 1999年10月下半月，沿南纬27°从智利海岸（西经71°）到复活节岛（西经110°）的船基气象观测提供了副热带东南太平洋低层环流、热力结构和云量的初步描述。进行了三种类型的观测： (a) 船舶甲板上的自动气象站对气温、相对湿度、太阳辐射、气压和风的 15 分钟平均值； (b) 15 分钟垂直反射率平均值...
Abstract The extensive and persistent deck of stratocumulus (SCu) off the west coast of subtropical South America plays an important role in the regional and global climate, as well as in coastal weather. As in other subtropical regions, the SCu form at the top of a marine boundary layer (MBL) bounded by a relatively cold ocean and a large–scale subsidence inversion. Nevertheless, details of the structure and variability of the lower troposphere over this region are largely unknown. Ship–based meteorological observations taken along a transect at 27°S from the Chilean coast (71°W) to Easter Island (110°W) during the second half of October 1999 provide a preliminary description of the low–level circulation, thermodynamic structure, and cloudiness over the subtropical southeast Pacific. Three types of observations were made: (a) 15–min average of air temperature, relative humidity, solar radiation, pressure, and wind by an automatic weather station on the ship deck; (b) 15–min average of vertical reflectivi...