Spatial characterization of climatic variables for Arica-Parinacota and Tarapacá, Chile using topoclimatic analysis




Atacama Desert, Spatial characterization, topoclimatic analysis


In the present study, models were developed to determine the monthly and annual spatio-temporal variation of temperature, precipitation, and solar radiation based on topoclimatic analysis of Arica-Parinacota and Tarapacá in northern Chile. To construct the equations of the topoclimatic model, the data from meteorological stations and physiographic factors (latitude, longitude, altitude, and distance to bodies of water) obtained from a digital terrain model with a resolution of 90 m were compiled in a database. The equations of the topoclimatic model were generated by a stepwise regression with a backward selection technique. The equations for average monthly temperature, precipitation, and solar radiation were determined by linear combinations. The results were statistically significant with coefficients of determination greater than 90%, in addition to being greater than the existing climate databases for this area.


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Author Biographies

Luis Morales-Salinas, Universidad de Chile

Luis Morales-Salinas received a B.S. in Physics from the P. Catholic University of Chile, Chile in 1987. He has participate in courses conducive to the Masters of Physics degree in the Austral university of Chile between 1986-1990, and received a Ph.D. in Environmental Sciences from the University of Concepción of Chile in 1997. He has been employed at several projects of environmental modeling, crop productivity, desertification and water use at the arid and semiarid zones of Chile. His research areas of interests include climatology, agroclimatology, zonification, environmental modeling, quantitative remote sensing for agriculture applications, and the development of remote sensing methods for land cover dynamic monitoring. He actually is working in a collaborative research effort with the Ecosystem laboratory, Faculty of Sciences, University of Chile, to modeling the impacts of land change use in runoff in the Central Zone of Chile.

Luis Felipe Roman Oosrio, Universidad de Tarapacá

I am Agronomist with specialization in Agronomy, Crop Physiology, Irrigation, Climatology, Hydrology and Environmental Modelling. I currently works at the Departamento de Recursos Ambientales, University of Tarapacá. I has been employed at several projects of environmental modeling, crop productivity, desertification and water use at the arid and semiarid zones of Chile. His research areas of interests include climatology, agroclimatology, zonification, environmental modeling, irrigation and crop physiology.

Jose Neira Roman, Universidad Catolica del Maule

Academic of the Department of Agrarian Sciences, Universidad Católica del Maule. My research lines are environmental modeling and soil physics. Currently I'm working in the use of Non-linear fit in chilean plagues and Homogenization of climatic data


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How to Cite

Morales-Salinas L, Castellaro G, Frederiksen N, Roman Oosrio LF, Neira Roman J, Fuentes Jaque G, Escobar Avaria C, Morales F. Spatial characterization of climatic variables for Arica-Parinacota and Tarapacá, Chile using topoclimatic analysis. CIG [Internet]. 2023 Feb. 2 [cited 2023 Sep. 22];49(1):39-53. Available from: