Spatial clustering analysis of atmospheric precipitable water in the Tianshan Mountains

doi:10.6046/gtzyyg.2017.01.18

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Abstract

Based on the MODIS near infrared atmospheric precipitable water products with the resolution of 1km×1km and elevation data, using GIS spatial analyst and mathematical statistics method, this paper analyzed the spatial distribution and spatial correlation of atmospheric precipitable water in the Tianshan mountains during the period from 2003 to 2013.The results show that the atmospheric precipitable water in western mountain area is higher than the eastern mountain area. The atmospheric precipitable water in the Tianshan mountains has significantly positively correlated and its global spatial autocorrelation index is 0.899 8. The atmospheric precipitable water in the Tianshan mountains tends to be spatially clustered. The cluster of high values (HH) accounts for 35.94% of the total and are mostly distributed in elevation 2 000 m in surrounding area of Tianshan mountains. The cluster of low values (LL) accounts for 38.79% of the total and concentrated in the central and eastern region of the Tianshan mountains with elevation 3 000 m. The spatial outliers in which a low value is surrounded primarily by high values (LH) are scattered in the Tianshan Mountain. The spatial correlation coefficient between atmospheric precipitable water and elevation is -0.831 3. Elevation is the main reason for the distribution and difference of spatial clustering pattern.

Keywords nonlinear fractal change point analysis remote sensing alteration anomalies Xinjinchang and Laojinchang

TP79

Issue Date: 23 January 2017

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	HAN Haihui
	WANG Yilin
	REN Guangli
	YANG Junlu
	LI Jianqiang
	YANG Min

Cite this article:

HAN Haihui,WANG Yilin,REN Guangli, et al. Spatial clustering analysis of atmospheric precipitable water in the Tianshan Mountains[J]. REMOTE SENSING FOR LAND & RESOURCES, 2017, 29(1): 116-121.

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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2017.01.18 OR https://www.gtzyyg.com/EN/Y2017/V29/I1/116

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