Spatio-Temporal Behavior of Land Surface Temperatures (LSTs) in Central Chile, Using Terra MODIS Images

被引:0
作者
Munoz-Aguayo, Pedro [1 ]
Morales-Salinas, Luis [2 ]
Pizarro, Roberto [3 ,4 ,5 ]
Ibanez, Alfredo [3 ,4 ]
Sanguesa, Claudia [3 ,4 ]
Fuentes-Jaque, Guillermo [2 ]
Toledo, Cristobal [3 ]
Garcia-Chevesich, Pablo A. [6 ,7 ]
机构
[1] Ctr Informac Recursos Nat CIREN, Av Manuel Montt 1164, Santiago 7501556, Chile
[2] Univ Chile, Fac Agr Sci, Lab Res Environm Sci LARES, Av Santa Rosa 11315,POB 1024, Santiago 8820808, Chile
[3] Univ Talca, United Nations Educ Sci & Cultural Org UNESCO, Talca 3467769, Chile
[4] Pontificia Univ Catolica Chile, Ctr Nacl Excelencia Ind Madera CENAMAD, Santiago 7810128, Chile
[5] Univ Talca, Direcc Innovac, Talca 3467769, Chile
[6] Colorado Sch Mines, Dept Civil & Environm Engn, Golden, CO 80401 USA
[7] United Nations Educ Sci & Cultural Org UNESCO, Intergovt Hydrol Programme, Montevideo 11200, Uruguay
关键词
forest cover; remote sensing; climate change; land use; Chile; ENERGY FLUXES; RETRIEVAL; DROUGHT; IMPACT; WATER; NDVI; CITY;
D O I
10.3390/hydrology11070103
中图分类号
TV21 [水资源调查与水利规划];
学科分类号
081501 ;
摘要
Land surface temperature (LST) is one of the most important variables in the physical processes of surface energy and water balance. The temporal behavior of LST was analyzed between the latitudes 32 degrees 00 ' S and 34 degrees 24 ' S (Valpara & iacute;so and Metropolitana regions of Chile) for three summer months (December, January, and February) in the 2000-2017 period, using the Terra MODIS image information and applying the Mann-Kendall test. The results show an increase in LST in the study area, particularly in the Andes mountain range in January (5240 km2), which mainly comprises areas devoid of vegetation and eternal snow and glaciers, and are zones that act as water reserves for the capital city of Santiago. Similarly, vegetated areas such as forests, grasslands, and shrublands also show increasing trends in LST but over smaller surfaces. Because this study is regional, it is recommended to improve the spatial and temporal resolutions of the images to obtain conclusions on more local scales.
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页数:15
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