Global drought observatory combined drought indicator: evaluation in southern south america

Autores
Spennemann, Pablo; Naumann, Gustavo; Peretti, Mercedes; Cammalleri, Carmelo; Salvia, Mercedes; Bocco, Alessio; Fernández Long, María Elena; Maas, Martín D.; Kim, Hyunglok; Le, Manh-Hung; Bolten, John D.; Toreti, Andrea; Lakshmi, Venkataraman
Año de publicación
2025
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Droughts pose serious threats to the agricultural sector, especially in rainfed-dominated agricultural regions like those in Argentina’s Humid Pampas. This region was recently impacted by slow-evolving and long-lasting droughts as well as by flash droughts, resulting in losses reaching thousands of millions of US dollars. Improvements of drought early warning systems are essential, particularly given the projected increase in drought frequency and severity over southern South America. The spatial and temporal relationship between precipitation deficits, soil moisture and vegetation health anomalies are crucial for better understanding and representation of the agricultural droughts and their impacts. The Global Drought Observatory Combined Drought Indicator (GDO-CDI, Cammalleri et al., 2021) considers the causal and time-lagged relationship of these three variables. The study’s objective is twofold: (1) Analyze the time-lagged response between precipitation deficits, soil moisture and satellite fraction of Absorbed Photosynthetically Active Radiation (fAPAR) anomalies; and (2) Evaluate the CDI’s capability to characterize the severity of drought events on the Humid Pampas against agricultural yield estimations and simulations, as well as agricultural emergency declarations.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Meteorología
Droughts
Hydrological Cycle
Impacts
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/193599
Acceder
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spelling Global drought observatory combined drought indicator: evaluation in southern south americaSpennemann, PabloNaumann, GustavoPeretti, MercedesCammalleri, CarmeloSalvia, MercedesBocco, AlessioFernández Long, María ElenaMaas, Martín D.Kim, HyunglokLe, Manh-HungBolten, John D.Toreti, AndreaLakshmi, VenkataramanMeteorologíaDroughtsHydrological CycleImpactsDroughts pose serious threats to the agricultural sector, especially in rainfed-dominated agricultural regions like those in Argentina’s Humid Pampas. This region was recently impacted by slow-evolving and long-lasting droughts as well as by flash droughts, resulting in losses reaching thousands of millions of US dollars. Improvements of drought early warning systems are essential, particularly given the projected increase in drought frequency and severity over southern South America. The spatial and temporal relationship between precipitation deficits, soil moisture and vegetation health anomalies are crucial for better understanding and representation of the agricultural droughts and their impacts. The Global Drought Observatory Combined Drought Indicator (GDO-CDI, Cammalleri et al., 2021) considers the causal and time-lagged relationship of these three variables. The study’s objective is twofold: (1) Analyze the time-lagged response between precipitation deficits, soil moisture and satellite fraction of Absorbed Photosynthetically Active Radiation (fAPAR) anomalies; and (2) Evaluate the CDI’s capability to characterize the severity of drought events on the Humid Pampas against agricultural yield estimations and simulations, as well as agricultural emergency declarations.Facultad de Ciencias Astronómicas y Geofísicas2025info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionObjeto de conferenciahttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/193599enginfo:eu-repo/semantics/altIdentifier/isbn/978-950-34-2665-4info:eu-repo/semantics/altIdentifier/url/https://cenamet.org.ar/congremet/wp-content/uploads/2025/11/A3_T039.pdfinfo:eu-repo/semantics/reference/hdl/10915/193317info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2026-05-06T13:00:43Zoai:sedici.unlp.edu.ar:10915/193599Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-05-06 13:00:44.208SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Global drought observatory combined drought indicator: evaluation in southern south america
title Global drought observatory combined drought indicator: evaluation in southern south america
spellingShingle Global drought observatory combined drought indicator: evaluation in southern south america
Spennemann, Pablo
Meteorología
Droughts
Hydrological Cycle
Impacts
title_short Global drought observatory combined drought indicator: evaluation in southern south america
title_full Global drought observatory combined drought indicator: evaluation in southern south america
title_fullStr Global drought observatory combined drought indicator: evaluation in southern south america
title_full_unstemmed Global drought observatory combined drought indicator: evaluation in southern south america
title_sort Global drought observatory combined drought indicator: evaluation in southern south america
dc.creator.none.fl_str_mv Spennemann, Pablo
Naumann, Gustavo
Peretti, Mercedes
Cammalleri, Carmelo
Salvia, Mercedes
Bocco, Alessio
Fernández Long, María Elena
Maas, Martín D.
Kim, Hyunglok
Le, Manh-Hung
Bolten, John D.
Toreti, Andrea
Lakshmi, Venkataraman
author Spennemann, Pablo
author_facet Spennemann, Pablo
Naumann, Gustavo
Peretti, Mercedes
Cammalleri, Carmelo
Salvia, Mercedes
Bocco, Alessio
Fernández Long, María Elena
Maas, Martín D.
Kim, Hyunglok
Le, Manh-Hung
Bolten, John D.
Toreti, Andrea
Lakshmi, Venkataraman
author_role author
author2 Naumann, Gustavo
Peretti, Mercedes
Cammalleri, Carmelo
Salvia, Mercedes
Bocco, Alessio
Fernández Long, María Elena
Maas, Martín D.
Kim, Hyunglok
Le, Manh-Hung
Bolten, John D.
Toreti, Andrea
Lakshmi, Venkataraman
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Meteorología
Droughts
Hydrological Cycle
Impacts
topic Meteorología
Droughts
Hydrological Cycle
Impacts
dc.description.none.fl_txt_mv Droughts pose serious threats to the agricultural sector, especially in rainfed-dominated agricultural regions like those in Argentina’s Humid Pampas. This region was recently impacted by slow-evolving and long-lasting droughts as well as by flash droughts, resulting in losses reaching thousands of millions of US dollars. Improvements of drought early warning systems are essential, particularly given the projected increase in drought frequency and severity over southern South America. The spatial and temporal relationship between precipitation deficits, soil moisture and vegetation health anomalies are crucial for better understanding and representation of the agricultural droughts and their impacts. The Global Drought Observatory Combined Drought Indicator (GDO-CDI, Cammalleri et al., 2021) considers the causal and time-lagged relationship of these three variables. The study’s objective is twofold: (1) Analyze the time-lagged response between precipitation deficits, soil moisture and satellite fraction of Absorbed Photosynthetically Active Radiation (fAPAR) anomalies; and (2) Evaluate the CDI’s capability to characterize the severity of drought events on the Humid Pampas against agricultural yield estimations and simulations, as well as agricultural emergency declarations.
Facultad de Ciencias Astronómicas y Geofísicas
description Droughts pose serious threats to the agricultural sector, especially in rainfed-dominated agricultural regions like those in Argentina’s Humid Pampas. This region was recently impacted by slow-evolving and long-lasting droughts as well as by flash droughts, resulting in losses reaching thousands of millions of US dollars. Improvements of drought early warning systems are essential, particularly given the projected increase in drought frequency and severity over southern South America. The spatial and temporal relationship between precipitation deficits, soil moisture and vegetation health anomalies are crucial for better understanding and representation of the agricultural droughts and their impacts. The Global Drought Observatory Combined Drought Indicator (GDO-CDI, Cammalleri et al., 2021) considers the causal and time-lagged relationship of these three variables. The study’s objective is twofold: (1) Analyze the time-lagged response between precipitation deficits, soil moisture and satellite fraction of Absorbed Photosynthetically Active Radiation (fAPAR) anomalies; and (2) Evaluate the CDI’s capability to characterize the severity of drought events on the Humid Pampas against agricultural yield estimations and simulations, as well as agricultural emergency declarations.
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
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dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/193599
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dc.language.none.fl_str_mv eng
language eng
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info:eu-repo/semantics/reference/hdl/10915/193317
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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
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