高原冰川表面温度反演研究——以祁连山老虎沟12号冰川为例  

Inversion of Plateau Glacier Surface Temperature:Taking the Glacier No.12 Laohugou in Qilian Mountains as an Example

作　　者：余寒 阳昌霞 刘汉湖[1] 曾敏[1] YU Han;YANG Changxia;LIU Hanhu;ZENG Min(Key Laboratory of Ministry of Land and Resources for Geoscience and Spatial Information Technology,Chengdu University of Technology,Chengdu 610059, China)

机构地区：[1]成都理工大学国土资源部地学空间信息技术重点实验室,成都610059

出　　处：《亚热带资源与环境学报》2021年第3期24-31,共8页Journal of Subtropical Resources and Environment

基　　金：国家自然科学基金面上项目(41971226);四川省自然科学重点项目(18ZA0061)。

摘　　要：高原冰川表面温度是高原冰川活动的一个重要物理特征,对其进行反演研究能进一步反映高原冰川地区的气候变化。本研究以中国长期监测的老虎沟12号冰川为研究对象,利用2013—2019年Landsat 8多光谱和热红外波段数据,结合Jiménez-Munoz(JM)模型算法反演冰川表面温度,并进行对比分析。结果表明:(1)Jiménez-Munoz(JM)模型算法结合Landsat 8数据能够较好地反演冰川表面温度;(2)2013—2017年夏季,由于太阳直射时间和角度不同,加上全球气候变暖影响,冰川表面平均温度略微升高,2019年秋季,温度相较于2013—2017年夏季有所降低,表明温度随季节变化;(3)同年间低海拔冰川表面温度高于高海拔冰川表面温度,表明温度与高程负相关;(4)0°~180°坡向冰川表面温度高于180°~360°坡向冰川表面温度,表明温度与太阳辐射有关,且不同区域温差较大。本研究结果为进一步使用遥感数据探究高原冰川表面温度提供了参考。The surface temperature of plateau glaciers is an important physical feature of plateau glaciers,its inversion can further reflect the climate change of plateau glaciers.This research has taken the Laohugou Glacier No.12 as study area,which has been monitored for a long time.Based on Landsat8 multi-spectral and thermal infrared band data from 2013 to 2019,and the Jiménez-Munoz(JM)algorithm to retrieve the temperature,while analyzing and comparing.Results show that,(1)The Jiménez-Munoz(JM)model algorithm combined with Landsat8 data can better reflect the surface temperature of the glacier and its variation;(2)The average temperature of the glacier surface slightly increased in the summer of 2013—2017 on account of the time and angle of direct sunlight are different and the impact of global warming.While the temperature phase in autumn 2019 has drop a little compared to 2013—2017,indicating that the temperature changes with the seasons;(3)The surface temperature of low-altitude glaciers is higher than that of high-altitude glaciers during the same year,indicating a negative correlation between temperature and elevation;(4)The surface temperature of the 0°~180°aspect glacier is higher than the surface temperature of the slope of the glacier from 180°to 360°,indicating that the temperature is related to solar radiation and the temperature difference between different regions is large.The research results provide a reference for further using remote sensing data to explore the plateau glacier surface temperature method.

关 键 词：高原冰川 温度反演 Jiménez-Munoz模型 Landsat 8 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]