Drought propagation in semi-arid river basins in Latin America: Lessons from Mexico to the Southern Cone

Melanie Oertel, Francisco Javier Meza, Jorge Gironás, Christopher A. Scott, Facundo Rojas, Nicolás Pineda-Pablos

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Detecting droughts as early as possible is important in avoiding negative impacts on economy, society, and environment. To improve drought monitoring, we studied drought propagation (i.e., the temporal manifestation of a precipitation deficit on soil moisture and streamflow). We used the Standardized Precipitation Evapotranspiration Index (SPEI), Standardized Streamflow Index (SSI), and Standardized Soil Moisture Index (SSMI) in three drought-prone regions: Sonora (Mexico), Maipo (Chile), and Mendoza-Tunuyán (Argentina) to study their temporal interdependence. For this evaluation we use precipitation, temperature, and streamflow data from gauges that are managed by governmental institutions, and satellite-based soil moisture from the ESA CCI SM v03.3 combined data set. Results confirm that effective drought monitoring should be carried out (1) at river-basin scale, (2) including several variables, and (3) considering hydro-meteorological processes from outside its boundaries.

Original languageEnglish (US)
Article number1564
JournalWater (Switzerland)
Volume10
Issue number11
DOIs
StatePublished - Nov 2 2018

Keywords

  • Drought assessment
  • Drought propagation
  • Latin-America
  • Semi-arid river basins
  • Standardized drought indices

ASJC Scopus subject areas

  • Biochemistry
  • Geography, Planning and Development
  • Aquatic Science
  • Water Science and Technology

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