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An Empirical Tropical Instability Wave-induced Wind Stress Model in the Equatorial Pacific and its Incorporation into the Ocean Model
Atmosphere-Ocean ( IF 1.2 ) Pub Date : 2018-10-20 , DOI: 10.1080/07055900.2018.1549016 Yanzhou Wei 1 , Xianbiao Kang 2 , Yuhua Pei 1
Atmosphere-Ocean ( IF 1.2 ) Pub Date : 2018-10-20 , DOI: 10.1080/07055900.2018.1549016 Yanzhou Wei 1 , Xianbiao Kang 2 , Yuhua Pei 1
Affiliation
Abstract Satellite observations revealed that there is a close relationship between perturbations of sea surface temperature (SST) and wind stress (τ) induced by tropical instability waves (TIWs; SSTTIW and τ TIW). Using the empirical relationship observed between TIW-induced wind stress divergence (curl) and downwind (crosswind) SST gradients, this study establishes a TIW-induced wind stress field perturbation model τ TIW = F(SST). This empirical model solves τ TIW from the TIW-induced wind stress divergence and curl, which are estimated from the downwind and crosswind SST gradients. This empirical τ TIW = F(SST) model can be incorporated into the ocean model to take into account the effect of τ TIW. By comparing two experiments with and without the τ TIW effect, this study demonstrates that τ TIW has a substantial effect on the equatorial Pacific heat budget and induces the long-term mean SST to exhibit a 0.2°C difference, which is consistent with previous studies.
中文翻译:
赤道太平洋热带不稳定性波浪诱发风应力的经验模型及其与海洋模型的结合
摘要 卫星观测表明,热带不稳定波(TIW;SSTTIW 和τ TIW)引起的海面温度(SST)扰动与风应力(τ)之间存在密切关系。利用在 TIW 引起的风应力发散(卷曲)和顺风(侧风)SST 梯度之间观察到的经验关系,本研究建立了 TIW 引起的风应力场扰动模型 τ TIW = F(SST)。该经验模型根据 TIW 引起的风应力发散和旋度求解 τ TIW,这些是根据顺风和侧风 SST 梯度估计的。该经验 τ TIW = F(SST) 模型可以纳入海洋模型以考虑 τ TIW 的影响。通过比较有和没有 τ TIW 效应的两个实验,
更新日期:2018-10-20
中文翻译:
赤道太平洋热带不稳定性波浪诱发风应力的经验模型及其与海洋模型的结合
摘要 卫星观测表明,热带不稳定波(TIW;SSTTIW 和τ TIW)引起的海面温度(SST)扰动与风应力(τ)之间存在密切关系。利用在 TIW 引起的风应力发散(卷曲)和顺风(侧风)SST 梯度之间观察到的经验关系,本研究建立了 TIW 引起的风应力场扰动模型 τ TIW = F(SST)。该经验模型根据 TIW 引起的风应力发散和旋度求解 τ TIW,这些是根据顺风和侧风 SST 梯度估计的。该经验 τ TIW = F(SST) 模型可以纳入海洋模型以考虑 τ TIW 的影响。通过比较有和没有 τ TIW 效应的两个实验,