REN Xu,LI Maoshan,REN Yuan.A Study of the Differences in Surface Heating on the North and South Slopes of Mount Everest[J].Journal of Chengdu University of Information Technology,2026,41(01):77-88.[doi:10.16836/j.cnki.jcuit.2026.01.011]
珠峰南北坡地表加热的异同研究
- Title:
- A Study of the Differences in Surface Heating on the North and South Slopes of Mount Everest
- 文章编号:
- 2096-1618(2026)01-0077-12
- Keywords:
- north and south slopes of Mount Everest; surface energy fluxes; ground-air interactions; comparative analysis
- 分类号:
- P426
- 文献标志码:
- A
- 摘要:
- 为进一步了解青藏高原地气之间的能量交换和物质输送过程,理解地形和气候对地气水热交换的影响,采用2000-2022年欧洲中期天气预报中心发布的第五代全球陆面再分析数据集(ERA5-LAND)中的月平均数据,重点对珠峰南北坡6个站点地表加热中的潜热通量、感热通量、蒸散发量、净辐射通量和土壤热通量进行时间和空间变化特征的对比分析。结果表明:(1)珠峰南北坡各通量均有显著的月变化和季节变化:潜热通量在夏季最强,冬季最弱。而感热通量、净辐射通量和土壤热通量均在春末夏初达到峰值,秋季维持高值,冬季显著减少。且潜热通量和感热通量的年际变化均呈现小幅度下降趋势。(2)珠峰南坡的下垫面加热主要受潜热通量支配,其蒸散发量和净辐射通量均大于北坡; 而北坡则以感热通量和土壤热通量为主导。(3)高原季风期,整体风速较小,南坡通过潜热释放促进降水; 北坡以感热为主,降水较少。非季风期,受西风带影响整体风速较大,南坡气候相对湿润,北坡气候寒冷干燥。
- Abstract:
- To further understand the energy exchange and mass transport between the land and atmosphere on the Tibetan Plateau, and to understand the influence of topography and climate on the ground-water-heat exchange, this paper adopts the monthly average data from the fifth-generation global land surface reanalysis dataset(ERA5-LAND) released by the European Centre for Medium-Range Weather Forecasts(ECMWF) from 2000 to 2022. It focuses on the comparative analysis of the temporal and spatial variation characteristics of latent heat flux, sensible heat flux, evapotranspiration, net radiation flux, and soil heat flux in surface heating at six sites on the northern and southern slopes of Mount Everest. The results show that:(1)There are significant monthly and seasonal variations in fluxes on both the northern and southern slopes of Mount Everest. Latent heat flux and evapotranspiration are strongest in summer, while sensible heat flux, net radiation flux,and soil heat flux peak in late spring and early summer, maintain high value in autumn, and decrease significantly in winter. Both latent heat flux and sensible heat flux show a slight downward trend.(2)Surface heating on the southern slope is mainly dominated by latent heat flux, with evapotranspiration and net radiation fluxes greater than on the northern slope. In contrast,the northern slope is primarily dominated by sensible heat flux and soil heat flux.(3)During the plateau monsoon period, the overall wind speed is small, and the south slope promotes precipitation through the release of latent heat, while the north slope is dominated by sensible heat, with less precipitation. In the non-monsoon period, the overall wind speed is relatively higher under the influence of the westerly wind belt, the climate on the south slope is relatively humid,and the climate on the north slope is cold and dry.
参考文献/References:
[1] 马伟强,戴有学,马耀明,等.珠峰北坡地区地表辐射和能量季节变化的初步分析[J].高原气象,2007,26(6):1237-1243.
[2] 田辉,马耀明,文军,等.秋季珠峰复杂地形下地表能量通量卫星遥感研究[J].高原气象,2007,26(6):1293-1299.
[3] 李茂善,戴有学,马耀明,等.珠峰地区大气边界层结构及近地层能量交换分析[J].高原气象,2006,25(5):807-813.
[4] 马耀明,王永杰,马伟强,等.珠峰复杂地表区域能量通量的卫星遥感[J].高原气象,2007,26(6):1231-1236.
[5] 杨续超,张镱锂,张玮,等.珠穆朗玛峰地区近34年来气候变化[J].地理学报,2006,61(7):687-696.
[6] Kang,Xu S C,You Y W,et al.Review of climate and cryospheric change in the Tibetan Plateau[J].Environmental Research Letters,2015,5(1).
[7] 刘晓东,罗四维,钱永甫.青藏高原地表热状况对夏季东亚大气环流影响的数值模拟[J].高原气象,1989,8(3):205-216.
[8] 刘永强,叶笃正,季劲钧.土壤湿度和植被对气候的影响——Ⅰ.短期气候异常持续性的理论分析[J].中国科学(B辑),1992,B(4):441-448.
[9] Shukla J,Y Mintz.Influence of land surface environment on the earth climate[J].Science,1982,215:1498-1501.
[10] Yeh T C,R T Wethereld,S Manabe.The effect of soil moisture on the short-term climate and hydrology change-A numerical experiment[J].Mon Wea Rev,1984,112:474-490.
[11] 杨建,马耀明.青藏高原典型下垫面的土壤温湿特征[J].冰川冻土,2012,34(4):813-820.
[12] 王永生,盛裴轩,刘式达,等.大气物理学[M].北京:气象出版社,1987,222-223.
[13] Gentine P,Entekhabi D,Heusinkveld.Systematic errors in ground heat flux estimation and their correction[J].Water Resourcs Research,2012,48(9):W09541.1-W09541.15.
[14] Xu T,Bateni S,Liang S,et al.Estimation of surface turbulent heat fluxes via variational assimilation of sequences of land surface temperatures from geostationary operational en-vironmental satellites[J].Journal of Geophysical Reserach:Atmospheres,2014,119:10780-10789.
[15] 仲雷,马耀明,苏中波,等.珠峰北坡地区近地层大气湍流与地气能量交换特征[J].地球科学进展,2006,21(12):1293-1303.
[16] Joshi,Bharat,et al.Seasonal and diurnal variations of carbon dioxide and energy fluxes over three land cover types of Nepal[J].Theoretical And Applied Climatology,2020,139(1-2):415-430.
[17] 王俏懿,马耀明,王宾宾,等.喜马拉雅南北坡地区地表能量通量及蒸散发量对比分析[J].地球科学进展,2021,36(8):810-825.
[18] Yao T D,Thompson,Lonnie Y,et al.Different glacier status with atmospheric circulations in Tibetan Plateau and surroundings[J].Nature Climate Change,2012,2(9):663-667.
[19] 胡伟,马伟强,马耀明,等.GLDAS资料驱动的Noah-MP陆面模式青藏高原地表能量交换模拟性能评估[J].高原气象,2020,39(3):486-498.
[20] 马耀明,王介民.非均匀陆面上区域蒸发(散)研究概况[J].高原气象,1997,16(4):446-452.
[21] 徐自为,刘绍民,宫丽娟,等.涡动相关仪观测数据的处理与质量评价研究[J].地球科学进展,2008,23(4):357-370.
[22] 王宾宾.利用MODIS资料估算青藏高原感热和潜热通量的时空分布及变化[D].北京:中国科学院青藏高原研究所,2014,48-69.
[23] 叶笃正,高由禧编著.青藏高原气象学[M].北京:科学出版社,1979.
[24] Hao,Luo,Yong,et al.Characteristics of Surface Solar Radiation under Different Air Pollution Conditions over Nanjing,China:Observation and Simulation[J].Advances in Atmospheric Sciences,2019,36(10):1047-1059.
[25] 马伟强,马耀明,李茂善,等.藏北高原地区和西北干旱区地表能量季节变化特征对比分析[J].太阳能学报2007,28(8):922-928.
备注/Memo
收稿日期:2024-06-18
基金项目:国家自然科学基金资助项目(42230610,41675106); 国家重点研发计划资助项目(2017YFC1505702); 第二次青藏高原综合科学考察研究资助项目(2019QZKK0103); 四川省自然科学基金资助项目(2022NSFSC0217)
通信作者:李茂善. E-mail:lims@cuit.edu.cn