Influence of precipitating convection on the surface energy budget observed during a tropical ocean global atmosphere pilot cruise in the tropical western Pacific Ocean
Influence of precipitating convection on the surface energy budget observed during a tropical ocean global atmosphere pilot cruise in the tropical western Pacific Ocean
复制标题
热带西太平洋热带海洋全球大气试点巡航期间观测到的降水对流对表面能量收支的影响
DOI：
10.1029/92jc00689
复制
发表时间：
1992
影响因子：
--
通讯作者：
C. Fairall
中科院分区：
文献类型：
--
作者：
G. Young;D. Ledvina;C. Fairall
为筹备热带海洋和全球大气方案海洋-大气耦合反应实验，对赤道西太平洋的表面能量收支进行了短期观测研究。数据是在1990年2月17日至3月10日期间，在“韦科马”号研究船在赤道附近和东经147°进行TOGA试验性巡航时获得的。对收集到的443小时湍流通量和辐射通量的分析侧重于深层降水对流对地表能量收支逐日变化的影响。分区的数据系列根据当地对流活动的程度允许比较各种对流制度的表面能量预算。正如GARP大西洋热带实验（GATE）期间在热带大西洋所观察到的那样，在受深层降水对流影响的时期，感热和潜热的表面通量较大。此外，对流影响这些通量的机制与热带大西洋中描述的机制相似。对流云及其副产品引起的短波辐射的变化被认为比地表通量对地表能量收支的日常变化的贡献更大。它的结论是，对流干扰天的存在有显着的影响，表面能量预算的整个巡航期间，以及在此期间内的日常变化。
A short-term observational study of the surface energy budget of the equatorial western Pacific Ocean was conducted in preparation for the Tropical Ocean and Global Atmosphere program Coupled Ocean-Atmosphere Response Experiment (TOGA COARE). Data were obtained between February 17 and March 10, 1990, during the TOGA pilot cruise of the R/V Wecoma near the equator and 147°E longitude. Analysis of the 443 hours of turbulent and radiative fluxes collected was focused on the influence of deep precipitating convection on the day-to-day variability of the surface energy budget. Partitioning the data series according to the degree of local convective activity allowed comparison of the surface energy budgets for various convective regimes. As was observed in the tropical Atlantic during the GARP Atlantic Tropical Experiment (GATE), the surface fluxes of sensible and latent heat were larger during periods influenced by deep precipitating convection. Moreover, the mechanisms by which convection affected these fluxes were similar to those described in the tropical Atlantic. Variations in the shortwave radiation caused by convective clouds and their by-products were found to contribute even more than the surface fluxes to the day-to-day variability of the surface energy budget. It is concluded that the existence of convectively disturbed days had a significant impact on the surface energy budget for the entire cruise period as well as on the day-to-day variability within that period.