气候变化领域集成服务门户(CCPortal): Full Implementation of Matrix Approach to Biogeochemistry Module of CLM5

CCPortal

DOI	10.1029/2020MS002105
	Full Implementation of Matrix Approach to Biogeochemistry Module of CLM5
	Lu X.; Du Z.; Huang Y.; Lawrence D.; Kluzek E.; Collier N.; Lombardozzi D.; Sobhani N.; Schuur E.A.G.; Luo Y.
发表日期	2020
ISSN	19422466
卷号	12 期号:11
英文摘要	Earth system models (ESMs) have been rapidly developed in recent decades to advance our understanding of climate change-carbon cycle feedback. However, those models are massive in coding, require expensive computational resources, and have difficulty in diagnosing their performance. It is highly desirable to develop ESMs with modularity and effective diagnostics. Toward these goals, we implemented a matrix approach to the Community Land Model version 5 (CLM5) to represent carbon and nitrogen cycles. Specifically, we reorganized 18 balance equations each for carbon and nitrogen cycles among the 18 vegetation pools in the original CLM5 into two matrix equations. Similarly, 140 balance equations each for carbon and nitrogen cycles among the 140 soil pools were reorganized into two additional matrix equations. The vegetation carbon and nitrogen matrix equations are connected to soil matrix equations via litterfall. The matrix equations fully reproduce simulations of carbon and nitrogen dynamics by the original model. The computational cost for forwarding simulation of the CLM5 matrix model was 26% more expensive than the original model, largely due to calculation of additional diagnostic variables, but the spin-up computational cost was significantly saved. We showed a case study on modeled soil carbon storage under two forcing data sets to illustrate the diagnostic capability that the matrix approach uniquely offers to understand simulation results of global carbon and nitrogen dynamics. The successful implementation of the matrix approach to CLM5, one of the most complex land models, demonstrates that most, if not all, the biogeochemical models can be reorganized into the matrix form to gain high modularity, effective diagnostics, and accelerated spin-up. ©2020. The Authors.
英文关键词	biogeochemistry modeling; diagnostic; matrix approach; model structure; modularity; traceability analysis
语种	英语
scopus关键词	Biogeochemistry; Climate change; Climate models; Digital storage; Earth (planet); Forestry; Nitrogen; Soils; Vegetation; Biogeochemical models; Carbon and nitrogen; Community land models; Computational costs; Computational resources; Diagnostic capabilities; Earth system model; Soil carbon storage; Matrix algebra; biogeochemistry; carbon storage; climate change; climate modeling; litterfall; matrix; soil carbon; soil-vegetation interaction
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156583
作者单位	Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, China; Center for Ecosystem Science and Society, Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, United States; Zhejiang Tiantong Forest Ecosystem National Observation and Research Station, Center for Global Change and Ecological Forecasting, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China; CSIRO Oceans and Atmosphere, Aspendale, VIC, Australia; Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Computer Science and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States
推荐引用方式 GB/T 7714	Lu X.,Du Z.,Huang Y.,et al. Full Implementation of Matrix Approach to Biogeochemistry Module of CLM5[J],2020,12(11).
APA	Lu X..,Du Z..,Huang Y..,Lawrence D..,Kluzek E..,...&Luo Y..(2020).Full Implementation of Matrix Approach to Biogeochemistry Module of CLM5.Journal of Advances in Modeling Earth Systems,12(11).
MLA	Lu X.,et al."Full Implementation of Matrix Approach to Biogeochemistry Module of CLM5".Journal of Advances in Modeling Earth Systems 12.11(2020).