A discrete global grid system for earth system modeling

被引：44

作者：

Lin, Bingxian ^{[1
]}

Zhou, Liangchen ^{[1
]}

Xu, Depeng ^{[1
]}

Zhu, A-Xing ^{[1
,2
]}

Lu, Guonian ^{[1
]}

机构：

[1] Nanjing Normal Univ, Key Lab Virtual Geog Environm, Minist Educ, Nanjing, Jiangsu, Peoples R China

[2] Univ Wisconsin, Dept Geog, Madison, WI 53706 USA

来源：

INTERNATIONAL JOURNAL OF GEOGRAPHICAL INFORMATION SCIENCE | 2018年 / 32卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Earth system modeling; discrete global grid system; spherical triangle; coding model; global-FVCOM; SEA-LEVEL RISE; SPATIAL DATA; PARAMETERIZATION; GIS;

D O I：

10.1080/13658816.2017.1391389

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

To support Earth system modeling, we propose a discrete global grid system that expresses multi-resolution spatial data. Specifically, a unified coding model that expresses a grid of nodes, edges, and cells is constructed for a triangular discrete global grid system. To fulfill the requirements of practical applications, we design a code-based topological query method for this grid system and an algorithm to transform between grid codes and geographic coordinates. We evaluate the Global Finite Volume Community Ocean Model (Global-FVCOM) on the triangular discrete global grid system in the proposed uniform coding model. The ocean tidal waves simulated by the Global-FVCOM running on the coded grid are then compared with results obtained using a traditional irregular spherical grid system, and the results display comparable accuracy. The uniform coding model proposed in this paper provides a triangular discrete global grid system that can represent multi-resolution spatial data and can be used in Earth system models. This unified coding model can also be applied to the geographic coordinate system made up of latitudes and longitudes, as well as diamond and hexagonal grids.

引用

页码：711 / 737

页数：27

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