气候变化领域集成服务门户(CCPortal): Estimation of aerosol and cloud radiative effects on terrestrial net primary productivity over northeast Qinghai-Tibet plateau

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DOI	10.1016/j.atmosenv.2023.119794
	Estimation of aerosol and cloud radiative effects on terrestrial net primary productivity over northeast Qinghai-Tibet plateau
	Xu, Jing; Zhang, Ming; Wang, Lunche; Sun, Jia; Li, Shiyu
发表日期	2023
ISSN	1352-2310
EISSN	1873-2844
卷号	305
英文摘要	Processes of plant growth are affected by solar radiation reaching the surface, which is regulated by atmospheric components such as aerosols and clouds. However, there are still large uncertainties in evaluating the impact of aerosol radiative effects (ARE) and cloud radiative effects (CRE) on ecosystems. This study estimated the ARE and CRE on vegetation productivity from 2001 to 2020 over the Northeast Qinghai-Tibet Plateau (QTP) based on MODIS satellite data coupled with the validated Radiative Transfer model (RTM) libRadtran and CASA (Car-negie-Ames-Stanford Approach)model. The results showed that both ARE and CRE have restrained vegetation growth in the last 20 years. The net primary productivity (NPP) of vegetation attenuation by ARE was strongest in summer with an increase of temperature and humidity which caused enhanced air particle transformation and hygroscopic growth, followed by spring and autumn, which were extremely affected by dust, and NPP attenu-ation by ARE was weakest in winter, accounting for 5.2% of the annual NPP. CRE plays an attenuating role on NPP with increasing cloudiness. The ARE reduced NPP by 18.8 g C/m2/yr, and CRE reduced NPP by 406.9 g C/ m2/yr. NPP attenuation by CRE was more than ten times that of NPP attenuation by ARE, which indicated that the CRE has a much stronger weakening of NPP than ARE. The area where the trend of NPP at all-sky conditions increases/decreases had a good match with the areas where the trend of NPP by CRE increases/decreases with R2 being 0.89, indicating that CRE plays a dominant role in attenuating NPP. The increase in NPP is mainly attributed to the decrease in NPP attenuation by CRE over the past two decades. The study results could help to comprehensively understand the ARE and CRE on the terrestrial carbon cycle, and to further access and analyze vegetation ecosystem conditions.
关键词	NPP Model Aerosol radiative effect Cloud radiative effect
英文关键词	DIFFUSE-RADIATION; OPTICAL-PROPERTIES; IMPACT; CHINA
WOS研究方向	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000989186500001
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283261
作者单位	China University of Geosciences - Wuhan; China University of Geosciences - Wuhan
推荐引用方式 GB/T 7714	Xu, Jing,Zhang, Ming,Wang, Lunche,et al. Estimation of aerosol and cloud radiative effects on terrestrial net primary productivity over northeast Qinghai-Tibet plateau[J],2023,305.
APA	Xu, Jing,Zhang, Ming,Wang, Lunche,Sun, Jia,&Li, Shiyu.(2023).Estimation of aerosol and cloud radiative effects on terrestrial net primary productivity over northeast Qinghai-Tibet plateau.ATMOSPHERIC ENVIRONMENT,305.
MLA	Xu, Jing,et al."Estimation of aerosol and cloud radiative effects on terrestrial net primary productivity over northeast Qinghai-Tibet plateau".ATMOSPHERIC ENVIRONMENT 305(2023).