Cross-spectral analysis of the sea surface temperature 10-m wind speed coupling resolved by satellite products and climate model simulations

This dataset contains sea surface temperature (SST), wind stress, and equivalent-neutral 10-m wind velocity outputs from two numerical experiments conducted with the National Center for Atmospheric Research (NCAR) Community Climate System Model Version 4 (CCSM4), run using horizontal ocean resolutions of 1° (LR, eddy-parameterized) and 0.1° (HR, eddy-resolving). More specifically, the CCSM4 is a global climate simulation model composed of the Community Land Model (CLM), the Community Atmospheric Model (CAM), the Los Alamos Parallel Ocean Program (POP) ocean general circulation model, and the Community Ice Code (CICE), that exchange state information and fluxes via a coupler. The HR and LR experiments are performed using atmospheric models configured to the same 0.5° x 0.625° latitude/longitude grid, but ocean models of contrasting horizontal resolutions. In LR, the ocean component uses an asymmetric dipolar grid with zonal resolution of 1.125°, and meridional resolution increasing from 0.27° near the equator until a maximum of 0.54° at midlatitudes, unable to resolve baroclinic instability processes and mesoscale ocean eddies, while the HR uses a tripolar ocean grid with a ~0.1° resolution that allows eddy formation and evolution. The LR (HR) experiment is initialized from a 255-year (155-year) control run with fixed 1990 C02 forcing, where fluxes at the air-sea interface are calculated at 3-hour (6-hour) intervals using state variables from the atmospheric model linearly interpolated onto the oceanic grid. The updated fluxes are then conservatively remapped to the native grid of each CCSM4 component model, and used in the integration of the subsequent time step. The LR and HR are both integrated for a period of 14 years, with daily-averaged outputs saved every 2 and 5 days, respectively. This dataset holds zonal-temporal diagrams of SST and wind stress retrieved from the atmospheric grid, also including estimates of the equivalent-neutral 10-m wind velocity vector computed from the model's wind stress data. The simulations were performed using computational resources provided by the Climate Simulation Laboratory at NCAR's Computational and Information Systems Laboratory, and by the University of Miami Center for Computational Science.

本数据集包含两项数值试验的模拟输出结果，涵盖海表温度（sea surface temperature, SST）、风应力以及等效中性10米风速（equivalent-neutral 10-m wind velocity）的相关数据。两项试验均采用美国国家大气研究中心（National Center for Atmospheric Research, NCAR）的社区气候系统模型第4版（Community Climate System Model Version 4, CCSM4）开展，分别配置1°（低分辨率，LR，涡旋参数化）与0.1°（高分辨率，HR，涡旋分辨）的海洋水平分辨率。具体而言，CCSM4是一款全球气候模拟模型，由陆面模式（Community Land Model, CLM）、社区大气模式（Community Atmospheric Model, CAM）、洛斯阿拉莫斯并行海洋程序（Los Alamos Parallel Ocean Program, POP）海洋环流模式以及社区海冰代码（Community Ice Code, CICE）组成，各组件通过耦合器（coupler）交换状态信息与通量。LR与HR试验的大气模式均配置为相同的0.5°×0.625°经纬度网格，但海洋模式的水平分辨率存在显著差异。其中LR试验的海洋组件采用非对称偶极子网格，纬向分辨率为1.125°，经向分辨率从赤道附近的0.27°随纬度升高逐步增加至中纬度地区的最大值0.54°，无法解析斜压不稳定过程（baroclinic instability processes）与中尺度海洋涡旋（mesoscale ocean eddies）；而HR试验的海洋组件采用约0.1°分辨率的三极海洋网格（tripolar ocean grid），可支持涡旋的生成与演化。LR（HR）试验均从一场时长255年（155年）的控制模拟试验（control run）初始化，该控制模拟采用固定的1990年二氧化碳（CO₂）强迫方案，气-海界面（air-sea interface）的通量通过将大气模式的状态变量线性插值至海洋网格后，以3小时（6小时）的时间间隔计算得到。更新后的通量会被保守重映射（conservatively remapped）至各CCSM4组件模型的原生网格（native grid），并用于后续时间步长（time step）的积分计算。LR与HR试验的总积分时长均为14年，分别以每2天和每5天的频率保存逐日平均输出（daily-averaged outputs）结果。本数据集包含从大气网格提取的海表温度与风应力的纬向-时间分布图（zonal-temporal diagrams），同时还包含基于模型风应力数据计算得到的等效中性10米风速矢量估计值。本模拟的计算资源由NCAR计算与信息系统实验室的气候模拟实验室以及迈阿密大学计算科学中心提供。