Sensitivity of Marine Heatwave Metrics to Ocean Model Resolution
Sensitivity of Marine Heatwave Metrics to Ocean Model Resolution
复制标题
海洋热浪指标对海洋模型分辨率的敏感性
DOI：
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发表时间：
2019
影响因子：
5.2
通讯作者：
A. Hogg
中科院分区：
文献类型：
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作者：
G. Pilo;N. Holbrook;A. Kiss;A. Hogg
海洋中持续的极端温度事件，被称为海洋热浪（MHWs），会产生巨大的生态、社会和经济影响。海洋模式提供了对强震的驱动、持续和消散的见解。然而，MHW指标对海洋模式分辨率的敏感性尚不清楚。在这里，我们分析了全球海洋-海冰模型在粗（1°）、涡流允许（0.25°）和涡流丰富（0.1°）分辨率下的三种配置下的全球MHW指标。我们表明，所有的配置都定性地代表了大尺度的mhw全球模式。然而，与观测结果相比，这些模拟的强震更弱、持续时间更长、频率更低。尽管存在局部偏差，但0.1°的配置在全球和地区都表现最好。基于这些结果，与使用富涡模型的结果相比，使用粗分辨率模型对未来MHW指标的模型预测预计会偏向于较弱和频率较低的MHW。
Sustained extreme temperature events in the ocean, referred to as marine heatwaves (MHWs), generate substantial ecological, social, and economic impacts. Ocean models provide insights to the drivers, persistence, and dissipation of MHWs. However, the sensitivity of MHW metrics to ocean model resolution is unknown. Here, we analyze global MHW metrics in three configurations of a global ocean‐sea ice model at coarse (1°), eddy‐permitting (0.25°), and eddy‐rich (0.1°) resolutions. We show that all configurations qualitatively represent broad‐scale global patterns of MHWs. These simulated MHWs are, however, weaker, longer‐lasting, and less frequent than in observations. The 0.1° configuration, despite local biases, performs best both globally and regionally. Based on these results, model projections of future MHW metrics using coarse‐resolution models are expected to be biased toward weaker and less frequent MHWs, when compared with results using an eddy‐rich model.
影响因子：
16.6
作者：
Oliver ECJ;Donat MG;Burrows MT;Moore PJ;Smale DA;Alexander LV;Benthuysen JA;Feng M;Sen Gupta A;Hobday AJ;Holbrook NJ;Perkins-Kirkpatrick SE;Scannell HA;Straub SC;Wernberg T
通讯作者：
Wernberg T
影响因子：
30.7
作者：
Smale, Dan A.;Wernberg, Thomas;Moore, Pippa J.
通讯作者：
Moore, Pippa J.