Estimation of mass elevation effect and its annual variation based on MODIS and NECP data in the Tibetan Plateau Estimation of mass elevation effect and its annual variation based on MODIS and NECP data in the Tibetan Plateau

最小化 最大化

Vol15 No.7: 1510-1519

Title】Estimation of mass elevation effect and its annual variation based on MODIS and NECP data in the Tibetan Plateau

Author】HAN Fang1; ZHANG Bai-ping2*; ZHAO Fang3; GUO Bing1; LIANG Tian1

Addresses】1 School of Civil and Architectural Engineering, Shandong University of Technology, Zibo 255000 China; 2 Institute of Geographic Sciences and Natural Resources Research, State Key Laboratory of Resources and Environmental Information System, Beijing 100101 China; 3 College of Environment and Planning, Henan University, Kaifeng 455000, China

Corresponding author】ZHANG Bai-ping

【Citation】Han F, Zhang BP, Zhao F, et al. (2018)Estimation of mass elevation effect and its annual variation based on MODIS and NECP data in the Tibetan Plateau. Journal of Mountain Science 15(7). https://doi.org/10.1007/s11629-018-4865-x

DOI】https://doi.org/10.1007/s11629-018-4865-x

Abstract】The lofty and extensive Tibetan Plateau has significant mass elevation effect (MEE). In recent years, a great effort has been made to quantify MEE, with the recognition of intra-mountain basal elevation (MBE) as the main determinant of MEE. In this study, we improved the method of estimating MEE with MODIS and NECP data, by refining temperature laps rate, and dividing MBE plots, and then analyzed the spatio-temporal variation of MEE in the Plateau. The main conclusions include: 1) the highest average annual MEE of the plateau is as high as 11.5488°C in the southwest of the plateau, where exists a high-MEE core and MEE takes on a trend of decreasing from the core to the surrounding areas; 2) in the interior of the plateau, the maximum monthly MEE is 14.1108°Cin the highest MBE plot (4934 m) in August; while the minimum monthly MEE appeared primarily in January and February; 3) in the peripheral areas of the plateau, annual mean MEE is relatively low, mostly between 3.0068°C–5.1972°C, where monthly MEE is highin January and December and low in June and July, completely different from the MEE time-series variation in the internal parts of the plateau.

Keywords】Mass elevation effect; Annual temperature change; Temperature laps rate; Mountain basal elevation; In-out temperature difference; Tibetan Plateau