Type
Text
Type
Dissertation
Advisor
Jiao, Xiangmin , Zhang, Minghua | Jiao, Xiangmin | Li, Xiaolin | Zhu, Wei | Zhang, Minghua
Date
2012-12-01
Keywords
CAM, CCSM, data remapping, two-way coupling, WRF | Applied mathematics--Atmospheric sciences
Department
Department of Applied Mathematics and Statistics
Language
en_US
Source
This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree.
Identifier
http://hdl.handle.net/11401/71181
Publisher
The Graduate School, Stony Brook University: Stony Brook, NY.
Format
application/pdf
Abstract
The two-way coupling of WRF and CAM for regional climate modeling requires transferring data (such as wind velocities, temperature, moisture, etc.) between the grids of WRF and CAM. These grids are in general non-matching, and the data transfer should be both physical conservative and numerically accurate. Our method contains two parts: constructing the common refinement and conservative data transfer using the common refinement. The former computes the cell intersections and provides the necessary data structures for the latter. We project the grids of WRF and CAM onto a plain surface using their corresponding map projection methods (such as: Lambert conformal projection). Then common refinement method will locate the edge intersection points of two grids, and determine sub-facets to create a new mesh based on the union of the intersection points and vertices of the original two grids within the overlapping area. After obtaining the common refinement mesh, we use a weighted-residual formulation, which minimizes the L-2 norm of the error, to complete the data transfer. The L-2 minimization method satisfies physical conservation and at the same time is as accurate as interpolation. | 89 pages
Recommended Citation
Chen, Ying, "Conservative and accurate data remapping for coupling climate models (WRF and CAM)" (2012). Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions). 388.
https://commons.library.stonybrook.edu/stony-brook-theses-and-dissertations-collection/388