CAJ | 학술논문

采用美国伍兹霍尔海洋研究所的客观分析海气通量项目最新发布的海气热通量和相关气象场、NOAA 提供的向外长波辐射和表面风场等数据,研究了暖池区域(144~154°E,1~6°N)局地海气相互作用的季节依赖性,并探讨可能对其产生影响的外强迫.结果表明,暖池区域海气相互作用在3月显著表现为受 ENSO影响的海洋对大气的强迫,而在6月则显著表现为以局地作用为主的大气对海洋的反馈.当海洋强迫大气占主导时,海温趋势(dSST/dt)的年际变化的数值小于海温;而当大气反馈海洋占主导时,海温趋势的年际变化数值大于海温.ENSO 会减弱暖池区域3月海洋对大气的强迫,而6月大气对海洋的反馈受 ENSO 影响不大;去除印度洋偶极子(IOD)影响后海气关系基本维持不变.3月 ENSO 通过增强暖池上空的对流,减少短波入射,从而使海温呈降低趋势,减弱海洋对大气的强迫.
채용미국오자곽이해양연구소적객관분석해기통량항목최신발포적해기열통량화상관기상장、NOAA 제공적향외장파복사화표면풍장등수거,연구료난지구역(144~154°E,1~6°N)국지해기상호작용적계절의뢰성,병탐토가능대기산생영향적외강박.결과표명,난지구역해기상호작용재3월현저표현위수 ENSO영향적해양대대기적강박,이재6월칙현저표현위이국지작용위주적대기대해양적반궤.당해양강박대기점주도시,해온추세(dSST/dt)적년제변화적수치소우해온;이당대기반궤해양점주도시,해온추세적년제변화수치대우해온.ENSO 회감약난지구역3월해양대대기적강박,이6월대기대해양적반궤수 ENSO 영향불대;거제인도양우겁자(IOD)영향후해기관계기본유지불변.3월 ENSO 통과증강난지상공적대류,감소단파입사,종이사해온정강저추세,감약해양대대기적강박.
Based on the air-sea interface heat fluxes and related meteorological variables datasets recently released by Objectively Analyzed Air-sea Fluxes (OA Flux) Project of Woods Hole Oceanographic Institution, as well as the outgoing longwave radiation and surface wind datasets from National Oceanic and Atmospheric Administration, the seasonal dependence of local air-sea interaction over the tropical western Pacific warm pool (referred to the region (144~154 °E, 1~6 °N)) are revealed and the remote forcing ′s probable impacts on the air-sea interaction are examined. The results indicated the dominance of oceanic forcing with the significant impact of ENSO in March and that of atmospheric forcing without the notable influence of remote forcing in June. While the interannual variability of sea surface temperature anomaly (SSTA) is larger than that of SSTA tendency in the case that oceanic forcing is dominant, the opposite is true when atmospheric forcing is dominant. The magnitude of the oceanic forcing of the atmosphere tends to decrease in March with the occurrence of ENSO, though ENSO has little influence on the atmospheric feedback to the ocean in June. The local air-sea interaction is substantially the same before and after the removal of the effect of Indian Oceanic Dipole. The reduction of shortwave radiation fluxes into the western Pacific warm pool, due to the enhanced overlaying convection in March associated with ENSO, leads to the decline of SST tendency that will weaken the oceanic forcing of the atmosphere.