气候变化领域集成服务门户(CCPortal): Study on the atmospheric heat engine efficiency and heat source characteristics of the Qinghai-Tibet Plateau in summer

CCPortal

DOI	10.1007/s11430-023-1212-3
	Study on the atmospheric heat engine efficiency and heat source characteristics of the Qinghai-Tibet Plateau in summer
	Li, Yujie; Gao, Xiaoqing; Ma, Yaoming; Hu, Zeyong; Li, Zhenchao; Yang, Liwei; Jin, Xiao; Zhou, Xiyin
发表日期	2024
ISSN	1674-7313
EISSN	1869-1897
起始页码	117
结束页码	133
卷号	67 期号:1
英文摘要	There are many types of atmospheric heat engines in land-air systems. The accurate definition, calculation and interpretation of the efficiency of atmospheric heat engines are key to understanding energy transfer and transformation of land-air systems. The atmosphere over the Qinghai-Tibet Plateau (QTP) in summer can be regarded as a positive heat engine. The study of the heat engine efficiency is helpful to better understand land-air interaction and thermal-dynamic processes on the QTP. It also provides a new perspective to explain the impact of the QTP on the climate of China, East Asia and even the world. In this paper, we used MOD08 and ERA5 reanalysis data to calculate the atmospheric heat engine efficiency, surface heat source and atmospheric heat source on the QTP in summer (May to September) from 2000 to 2020. The average atmospheric heat engine efficiency on the QTP in summer from 2000 to 2020 varies between 1.2% and 1.5%, which is less than 1.6%; the heat engine efficiency in summer is higher than that in June, July and August; the Qaidam Basin is the region with the highest atmospheric heat engine efficiency, followed by the western QTP. The mean surface heat source on the QTP in summer from 2000 to 2020 is 96.0 W m-2, the atmospheric heat source is 90.7 W m-2, and the release of precipitation condensation latent heat is the most important component of the atmospheric heat source on the QTP in summer. There is a strong and significant positive correlation between the atmospheric heat engine efficiency and the surface heat source on the QTP in summer. The precipitation con densation latent heat is the most important component of the atmospheric heat source in summer and can reflect the precipitation process. There is a strong and significant negative correlation between the atmospheric heat engine efficiency and the atmo spheric heat source on the QTP in summer.
关键词	Qinghai-Tibet Plateau Climate change Land-air system Atmospheric heat engine Heat source on the Qinghai-Tibet Plateau
英文关键词	SEA INTERACTION THEORY; TROPICAL CYCLONES; CONVECTION
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:001127229400003
来源期刊	SCIENCE CHINA-EARTH SCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282822
作者单位	Chinese Academy of Sciences; Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Li, Yujie,Gao, Xiaoqing,Ma, Yaoming,et al. Study on the atmospheric heat engine efficiency and heat source characteristics of the Qinghai-Tibet Plateau in summer[J]. 中国科学院青藏高原研究所,2024,67(1).
APA	Li, Yujie.,Gao, Xiaoqing.,Ma, Yaoming.,Hu, Zeyong.,Li, Zhenchao.,...&Zhou, Xiyin.(2024).Study on the atmospheric heat engine efficiency and heat source characteristics of the Qinghai-Tibet Plateau in summer.SCIENCE CHINA-EARTH SCIENCES,67(1).
MLA	Li, Yujie,et al."Study on the atmospheric heat engine efficiency and heat source characteristics of the Qinghai-Tibet Plateau in summer".SCIENCE CHINA-EARTH SCIENCES 67.1(2024).