Cloudiness Variation Observed at Yangbajing During Forbush Decrease of Galactic Cosmic Rays

WANG Min-Jie; WANG Li-Ping; JIA Huan-Yu

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2006, Vol. 30> Issue(1) : 75-78

Cloudiness Variation Observed at Yangbajing During Forbush Decrease of Galactic Cosmic Rays

Institute of Modern Physics,Southwest Jiaotong University,Chengdu 610031,China

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Abstract：
Due to the solar modulation and other factors, the cosmic ray flux has some changes which maybe induce variation of the Earth's climate, such as cloudiness. It is possibly an effective way to research connection between cosmic ray and cloud through studying effect on cloudiness of galactic cosmic ray flux associated with Forbush decrease (FD) events, because climate variation, especially cloudiness, has a response to the FD events.Three FD events had been recorded with Yangbajing neutron monitor during the years from 2003---2004. Variation of cloudiness following FD over the regions of Yangbajing cosmic ray observation has also been observed by infrared radiometer. By statistically analyzing the FD events, it has been found that significant increase of cloud takes place during FD events. The results indicate that the cloudiness increases at lower latitudes in the regions of thinner cloud, which is consistent with results at this lower latitudes found by other investigators.

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WANG Min-Jie, WANG Li-Ping and JIA Huan-Yu. Cloudiness Variation Observed at Yangbajing During Forbush Decrease of Galactic Cosmic Rays[J]. Chinese Physics C, 2006, 30(1): 75-78.

WANG Min-Jie, WANG Li-Ping and JIA Huan-Yu. Cloudiness Variation Observed at Yangbajing During Forbush Decrease of Galactic Cosmic Rays[J]. Chinese Physics C, 2006, 30(1): 75-78. shu

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Received: 2005-03-15
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Cloudiness Variation Observed at Yangbajing During Forbush Decrease of Galactic Cosmic Rays

Corresponding author: JIA Huan-Yu,

Institute of Modern Physics,Southwest Jiaotong University,Chengdu 610031,China

Received Date: 2005-03-15
Accepted Date: 1900-01-01
Available Online: 2006-01-05

Abstract: Due to the solar modulation and other factors, the cosmic ray flux has some changes which maybe induce variation of the Earth's climate, such as cloudiness. It is possibly an effective way to research connection between cosmic ray and cloud through studying effect on cloudiness of galactic cosmic ray flux associated with Forbush decrease (FD) events, because climate variation, especially cloudiness, has a response to the FD events.Three FD events had been recorded with Yangbajing neutron monitor during the years from 2003---2004. Variation of cloudiness following FD over the regions of Yangbajing cosmic ray observation has also been observed by infrared radiometer. By statistically analyzing the FD events, it has been found that significant increase of cloud takes place during FD events. The results indicate that the cloudiness increases at lower latitudes in the regions of thinner cloud, which is consistent with results at this lower latitudes found by other investigators.