气候变化领域集成服务门户(CCPortal): Trend in seasonal amplitude of northern net ecosystem production: Simulated results from IAP DGVM in CAS-ESM2

CCPortal

DOI	10.1016/j.aosl.2023.100445
	Trend in seasonal amplitude of northern net ecosystem production: Simulated results from IAP DGVM in CAS-ESM2
	Zhu, Jiawen; Zeng, Xiaodong
发表日期	2024
ISSN	1674-2834
EISSN	2376-6123
起始页码	17
结束页码	2
卷号	17 期号:2
英文摘要	Net ecosystem production (NEP) over northern latitudes has an obvious seasonal variation, which dominantly drives the seasonal variation in atmospheric CO2. Investigating these carbon processes and understanding the underlying drivers is a key issue of climate research. This study focuses on the seasonal amplitude of northern NEP (40 degrees-90 degrees N) and investigates its trend in the period 1990-2014 by using the dynamic global vegetation model (IAP DGVM) in the second version of the Chinese Academy of Sciences Earth System Model (CAS-ESM2). Basing on a spin -up simulation, the authors conduct a control simulation to evaluate the modeled trend in the seasonal amplitude of northern NEP, and three sensitivity simulations to detect the contributions of the climate and atmospheric CO2. The results show that the modeled seasonal amplitude of northern NEP increases significantly from 1990 to 2014, with a trend of 9.69 TgC month-1 yr- 1 , which is mainly because of the increasing maximum NEP. The positive trend is largely reduced when CO2 fertilization effects and climatic effects are separately excluded. These significant reductions suggest important effects of atmospheric CO2 and climate change on the seasonal amplitude of northern NEP. Even though model uncertainties remain, the results favor further development of IAP DGVM in accurately simulating the terrestrial carbon cycle, and also provide an important reference for the application of CAS-ESM in further investigating carbon-climate interactions.
英文关键词	Net ecosystem production; Northern ecosystems; Seasonal amplitude; CO2 fertilization effects; Climatic effects
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001188288900001
来源期刊	ATMOSPHERIC AND OCEANIC SCIENCE LETTERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/298232
作者单位	Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; Nanjing University of Information Science & Technology; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Zhu, Jiawen,Zeng, Xiaodong. Trend in seasonal amplitude of northern net ecosystem production: Simulated results from IAP DGVM in CAS-ESM2[J],2024,17(2).
APA	Zhu, Jiawen,&Zeng, Xiaodong.(2024).Trend in seasonal amplitude of northern net ecosystem production: Simulated results from IAP DGVM in CAS-ESM2.ATMOSPHERIC AND OCEANIC SCIENCE LETTERS,17(2).
MLA	Zhu, Jiawen,et al."Trend in seasonal amplitude of northern net ecosystem production: Simulated results from IAP DGVM in CAS-ESM2".ATMOSPHERIC AND OCEANIC SCIENCE LETTERS 17.2(2024).