Resoltuion Requirements and Numerical Convergence Rates of Hydrological Processes in Climate Simulation

这项研究的目的是估计数字 水文和气候三个关键要素的收敛速度 能量循环，从而量化数值误差 不同分辨率下的近似值。 这三个要素是： i）大气和海洋之间的水汽垂直通量， ii）边界层喷流中水汽的水平通量，以及 iii）云覆盖率对模式分辨率的敏感性。 该方法将使用一个伸缩，可变分辨率 全球模型，能够在本地解决更多 比其他统一分辨率的气候模式。 的 垂直边界层分辨率将有选择地提高， 研究项目（i）和水平分辨率将是局部的 增强以明确地解析研究项目的中尺度结构 (ii)及（iii）。 这项研究很重要，因为它试图更好地了解 水蒸气在海洋和大气之间的传输， 全球水循环的一部分。 这项研究得到了支持 全球变化全球能源和水循环 实验（GEWEX）。

The objective of this research is to estimate the numerical convergence rate of three key climate elements of hydrological and energy cycles, and to thereby quantify the error of numerical approximations at different resolutions. The three elements are: i)vertical fluxes of water vapor between the atmosphere and ocean, ii) horizontal fluxes of water vapor in boundary layer jets, and iii) sensitivity of fractional cloud cover to model resolution. The methodology will be to use a telescoping, variable resolution global model that is capable of locally resolving far more structure than are other uniform resolution climate models. The vertical boundary layer resolution will be selectively enhanced to study item (i) and the horizontal resolution will be locally enhanced to explicitly resolve mesoscale structures to study items (ii) and (iii). The study is important because it seeks to better understand water vapor transports between the oceans and atmosphere, a key component of the global water cycle. This research is supported partially by the Global Change Global Energy and Water Cycle Experiment (GEWEX).