气候变化领域集成服务门户(CCPortal): Unusually weak signal of summer surface air temperature change over North China

CCPortal

DOI	10.1002/joc.8413
	Unusually weak signal of summer surface air temperature change over North China
	Cheng, Fangyuan; Zuo, Zhiyan; Zhang, Kaiwen; Chang, Meiyu; Xiao, Dong
发表日期	2024
ISSN	0899-8418
EISSN	1097-0088
起始页码	44
结束页码	6
卷号	44 期号:6
英文摘要	Under global warming, the summer surface air temperature (SAT) change signal in the northern mid-latitudes is generally the most significant, while the SAT change in North China (NC) shows distinct local characteristics. Using simulations from the Coupled Model Intercomparison Project Phase 6 and observation from Berkeley Earth Surface Temperature, this study reveals an unusually weak signal of summer SAT change in NC since the 1960s. This uniquely weak signal can be attributed to the small net contribution of external forcings, mainly from anthropogenic greenhouse gases (GHG) and aerosols (AA). Compared to other land regions in the same latitudinal band, the GHG-induced warming was weaker and AA-induced cooling was stronger in NC, resulting in the weakest SAT change signal and thus the lowest signal-to-noise ratio. This weaker GHG-induced warming plays a more important role in the SAT change difference between NC and other land regions in the same latitudinal zone. Under different emission scenarios in the future, the signal-to-noise ratio in NC will become as large as those in the other land regions in the same latitudinal band and the northern hemisphere, which is partly due to the smaller relative differences in the SAT change signal between NC and the other two regions. The projections of SAT change indicate that climate change in NC will probably become more violent and vulnerable. Understanding the surface air temperature change characteristics in North China is of great concern to policy-makers due to its profound impact on society, the economy, and human beings. This study reveals an unusually weak summer surface air temperature change signal in North China since the 1960s. This uniquely weak signal can be attributed to the small net contribution of external forcings, mainly from stronger AA-induced cooling and weaker GHG-induced warming in North China. image
英文关键词	North China; signal-to-noise ratio; summer surface air temperature change signal; surface air temperature response to external forcings
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:001196057800001
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/303324
作者单位	Fudan University; Nanjing University; China Meteorological Administration
推荐引用方式 GB/T 7714	Cheng, Fangyuan,Zuo, Zhiyan,Zhang, Kaiwen,et al. Unusually weak signal of summer surface air temperature change over North China[J],2024,44(6).
APA	Cheng, Fangyuan,Zuo, Zhiyan,Zhang, Kaiwen,Chang, Meiyu,&Xiao, Dong.(2024).Unusually weak signal of summer surface air temperature change over North China.INTERNATIONAL JOURNAL OF CLIMATOLOGY,44(6).
MLA	Cheng, Fangyuan,et al."Unusually weak signal of summer surface air temperature change over North China".INTERNATIONAL JOURNAL OF CLIMATOLOGY 44.6(2024).