TY - JOUR
T1 - Adaptive Cartesian meshes for atmospheric single-column models
T2 - A study using Basilisk 18-02-16
AU - Antoon Van Hooft, J.
AU - Popinet, Stéphane
AU - Van De Wiel, Bas J.H.
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85057545010&partnerID=8YFLogxK
U2 - 10.5194/gmd-11-4727-2018
DO - 10.5194/gmd-11-4727-2018
M3 - Article
VL - 11
SP - 4727
EP - 4738
JO - Geoscientific Model Development
JF - Geoscientific Model Development
SN - 1991-959X
IS - 12
ER -