EVALUACIÓN DEL REANALYSIS (NCEP/NCAR) PARA EL ESTUDIO DE LA VARIABILIDAD TERMO-PLUVIOMÉTRICA DEL NOROESTE ARGENTINO

Authors

  • Federico Ferrelli Instituto Argentino de Oceanografía. Consejo Nacional de Investigaciones Científicas y Técnicas (IADO - CONICET, Argentina) Universidad Nacional del Sur (UNS, Argentina)
  • Andrea Soledad Brendel IADO - CONICET - UNS
  • María Cintia Piccolo IADO - CONICET - UNS
DOI: https://doi.org/10.6018/geografia.524631
Keywords: Downscaling techniques, climate studies, weather stations, modeled data, accuracy

Supporting Agencies

  • CONICET
  • UNS

Abstract

This study aims at assessing the precision of Reanalysis NCEP/NCAR for characterizing the thermal and rainfall variability in Northwest Argentina. Time series registered in situ and downloaded from Reanalysis were processed for the 1960-2020 period. Standard statistical techniques were applied, and subsequently, the spatial variation of temperature and rainfall was studied by applying the Kriging method. Finally, we analyzed both series with quantile regression. We divided the time series into ten quantiles and studied the adjustments. Results evidenced that both temperature and rainfall had statistical adjustments (p < 0.05), indicating that data from Reanalysis allowed the characterization of the spatial distribution of these variables with high accuracy. Air temperature registered higher results than rainfall. Nevertheless, when we studied the extremes, we observed significant differences. The temperature was reasonably adjusted in temperate and arid climates, while rainfalls presented significant results in the middle quantiles but not so in the extreme quantiles. The results obtained are an essential database for climate studies on a regional scale and for the design of land use plans to improve population’s quality of life and the environment.

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Author Biographies

Federico Ferrelli, Instituto Argentino de Oceanografía. Consejo Nacional de Investigaciones Científicas y Técnicas (IADO - CONICET, Argentina) Universidad Nacional del Sur (UNS, Argentina)

Doctorando de la UNS, realizando la especialización en teledetección y SIG en la Universidad Nacional de Luján (UNLu, Argentina).

Andrea Soledad Brendel, IADO - CONICET - UNS

Becaria Posdoctoral del Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina. 

Docente en el Departamento de Agronomía de la Universidad Nacional del Sur, Argentina. 

María Cintia Piccolo, IADO - CONICET - UNS

Investigadora Superior del Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina. 

Profesora Emérita del Departamento de Geografía y Turismo de la Universidad Nacional del Sur, Argentina. 

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Published
07-11-2022 — Updated on 25-01-2023
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Ferrelli, F., Brendel, A. S., & Piccolo, M. C. (2023). EVALUACIÓN DEL REANALYSIS (NCEP/NCAR) PARA EL ESTUDIO DE LA VARIABILIDAD TERMO-PLUVIOMÉTRICA DEL NOROESTE ARGENTINO. Geography Papers, (68), 26–39. https://doi.org/10.6018/geografia.524631 (Original work published November 7, 2022)
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