Adaptive Cartesian meshes for atmospheric single-column models: a study using Basilisk 18-02-16
Adaptive Cartesian meshes for atmospheric single-column models: a study using Basilisk 18-02-16
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大气单柱模型的自适应笛卡尔网格：使用 Basilisk 的研究 18-02-16
DOI：
10.5194/gmd-11-4727-2018
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发表时间：
2018
影响因子：
5.1
通讯作者：
Antoon van Hooft
中科院分区：
文献类型：
--
作者：
J.Antoon van Hooft;S. Popinet;J. H. V. D. Wiel;Jean le Rond;Antoon van Hooft
抽象的。众所周知，某些大气条件的代表性，
气候和天气模型仍然会受到有限网格分辨率的影响
这是由现代计算机系统提供的。在这里，我们研究一个简单的
通过使用单柱模型对这些模型进行一维模拟
大气层的描述。该模型采用自适应笛卡尔网格
仅在需要的时候和位置应用高分辨率网格。的
所谓的自适应网格模型的描述，我们报告我们的研究结果
用于评估大气边界代表性的测试
层，基于前两个GEWEX ABL研究（GABLS）相互比较的情况下。
分析表明，自适应网格算法确实能够
动态粗化和细化数值网格，同时保持
准确的解决方案。这是一个有趣的结果，因为在现实中，
动力学（例如，由于昼夜周期或由于天气变化
条件）是规则而不是例外。
Abstract. It is well known that the representation of certain atmospheric conditions in
climate and weather models can still suffer from the limited grid resolution
that is facilitated by modern-day computer systems. Herein we study a simple
one-dimensional analogy to those models by using a single-column model
description of the atmosphere. The model employs an adaptive Cartesian mesh
that applies a high-resolution mesh only when and where it is required. The
so-called adaptive-grid model is described, and we report our findings
obtained for tests to evaluate the representation of the atmospheric boundary
layer, based on the first two GEWEX ABL Study (GABLS) inter-comparison cases.
The analysis shows that the adaptive-grid algorithm is indeed able to
dynamically coarsen and refine the numerical grid whilst maintaining an
accurate solution. This is an interesting result as in reality, transitional
dynamics (e.g. due to the diurnal cycle or due to changing synoptic
conditions) are the rule rather than the exception.