Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere coupling

Autores
Giles, Julián Alberto; Ruscica, Romina; Menendez, Claudio Guillermo
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Southeastern South America is influenced by moisture transport from lower latitudes, sustainsintense convective storms and is a land-atmosphere coupling hotspot, but the interconnectionbetween these processes is still not well understood. We present the warm-season diurnal cycleclimatology of the water balance components in the South American Low-Level Jet (SALLJ) exitregion in northeastern Argentina during 1998-2012. Different precipitation-based types of events(clear-sky and rainy days) were explored together with processes tied to the land-atmospherecoupling at the daily scale. Our research was based on simulations with and without soilmoisture-atmosphere coupling with the RCA4 regional climate model. A control simulation wascompared with a sensitivity simulation where the soil moisture was prescribed with the dailyclimatological values from the control run. The ERA5 reanalysis and the satellite precipitationproducts TRMM-3B42 v7 and CMORPH v1.0 bias corrected were used for comparativepurposes. From the diurnal water balance analysis we found that moisture flux convergence inthe region is the main driver for nocturnal precipitation while local evapotranspiration feedsafternoon rain events. Rainy afternoons do not show differences between simulations, but rainynights seem to be affected. Moreover, daily correlations between surface and boundary-layervariables showed that the local coupling is weaker during rainy days than during clear-sky days.Therefore, we suggest that changes in non-local drivers, such as the moisture flux through theSALLJ, are more relevant for rainy nights than the local coupling.
Fil: Giles, Julián Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
Fil: Ruscica, Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
Fil: Menendez, Claudio Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
Materia
DIURNAL CYCLE
MODEL EXPERIMENTS
LAND ATMOSPHERE COUPLING
PRECIPITATION
ATMOSPHERIC WATER BALANCE
SOUTH AMERICAN LOW LEVEL JET
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/143682
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/143682
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere couplingGiles, Julián AlbertoRuscica, RominaMenendez, Claudio GuillermoDIURNAL CYCLEMODEL EXPERIMENTSLAND ATMOSPHERE COUPLINGPRECIPITATIONATMOSPHERIC WATER BALANCESOUTH AMERICAN LOW LEVEL JEThttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Southeastern South America is influenced by moisture transport from lower latitudes, sustainsintense convective storms and is a land-atmosphere coupling hotspot, but the interconnectionbetween these processes is still not well understood. We present the warm-season diurnal cycleclimatology of the water balance components in the South American Low-Level Jet (SALLJ) exitregion in northeastern Argentina during 1998-2012. Different precipitation-based types of events(clear-sky and rainy days) were explored together with processes tied to the land-atmospherecoupling at the daily scale. Our research was based on simulations with and without soilmoisture-atmosphere coupling with the RCA4 regional climate model. A control simulation wascompared with a sensitivity simulation where the soil moisture was prescribed with the dailyclimatological values from the control run. The ERA5 reanalysis and the satellite precipitationproducts TRMM-3B42 v7 and CMORPH v1.0 bias corrected were used for comparativepurposes. From the diurnal water balance analysis we found that moisture flux convergence inthe region is the main driver for nocturnal precipitation while local evapotranspiration feedsafternoon rain events. Rainy afternoons do not show differences between simulations, but rainynights seem to be affected. Moreover, daily correlations between surface and boundary-layervariables showed that the local coupling is weaker during rainy days than during clear-sky days.Therefore, we suggest that changes in non-local drivers, such as the moisture flux through theSALLJ, are more relevant for rainy nights than the local coupling.Fil: Giles, Julián Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; ArgentinaFil: Ruscica, Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; ArgentinaFil: Menendez, Claudio Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; ArgentinaJohn Wiley & Sons Ltd2020-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/143682Giles, Julián Alberto; Ruscica, Romina; Menendez, Claudio Guillermo; Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere coupling; John Wiley & Sons Ltd; International Journal of Climatology; 41; S1; 7-2020; E768-E7780899-8418CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/joc.6724info:eu-repo/semantics/altIdentifier/doi/10.1002/joc.6724info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:45:01Zoai:ri.conicet.gov.ar:11336/143682instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:45:01.743CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere coupling
title Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere coupling
spellingShingle Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere coupling
Giles, Julián Alberto
DIURNAL CYCLE
MODEL EXPERIMENTS
LAND ATMOSPHERE COUPLING
PRECIPITATION
ATMOSPHERIC WATER BALANCE
SOUTH AMERICAN LOW LEVEL JET
title_short Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere coupling
title_full Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere coupling
title_fullStr Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere coupling
title_full_unstemmed Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere coupling
title_sort Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere coupling
dc.creator.none.fl_str_mv Giles, Julián Alberto
Ruscica, Romina
Menendez, Claudio Guillermo
author Giles, Julián Alberto
author_facet Giles, Julián Alberto
Ruscica, Romina
Menendez, Claudio Guillermo
author_role author
author2 Ruscica, Romina
Menendez, Claudio Guillermo
author2_role author
author
dc.subject.none.fl_str_mv DIURNAL CYCLE
MODEL EXPERIMENTS
LAND ATMOSPHERE COUPLING
PRECIPITATION
ATMOSPHERIC WATER BALANCE
SOUTH AMERICAN LOW LEVEL JET
topic DIURNAL CYCLE
MODEL EXPERIMENTS
LAND ATMOSPHERE COUPLING
PRECIPITATION
ATMOSPHERIC WATER BALANCE
SOUTH AMERICAN LOW LEVEL JET
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Southeastern South America is influenced by moisture transport from lower latitudes, sustainsintense convective storms and is a land-atmosphere coupling hotspot, but the interconnectionbetween these processes is still not well understood. We present the warm-season diurnal cycleclimatology of the water balance components in the South American Low-Level Jet (SALLJ) exitregion in northeastern Argentina during 1998-2012. Different precipitation-based types of events(clear-sky and rainy days) were explored together with processes tied to the land-atmospherecoupling at the daily scale. Our research was based on simulations with and without soilmoisture-atmosphere coupling with the RCA4 regional climate model. A control simulation wascompared with a sensitivity simulation where the soil moisture was prescribed with the dailyclimatological values from the control run. The ERA5 reanalysis and the satellite precipitationproducts TRMM-3B42 v7 and CMORPH v1.0 bias corrected were used for comparativepurposes. From the diurnal water balance analysis we found that moisture flux convergence inthe region is the main driver for nocturnal precipitation while local evapotranspiration feedsafternoon rain events. Rainy afternoons do not show differences between simulations, but rainynights seem to be affected. Moreover, daily correlations between surface and boundary-layervariables showed that the local coupling is weaker during rainy days than during clear-sky days.Therefore, we suggest that changes in non-local drivers, such as the moisture flux through theSALLJ, are more relevant for rainy nights than the local coupling.
Fil: Giles, Julián Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
Fil: Ruscica, Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
Fil: Menendez, Claudio Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Centro de Investigaciones del Mar y la Atmósfera. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Centro de Investigaciones del Mar y la Atmósfera; Argentina
description Southeastern South America is influenced by moisture transport from lower latitudes, sustainsintense convective storms and is a land-atmosphere coupling hotspot, but the interconnectionbetween these processes is still not well understood. We present the warm-season diurnal cycleclimatology of the water balance components in the South American Low-Level Jet (SALLJ) exitregion in northeastern Argentina during 1998-2012. Different precipitation-based types of events(clear-sky and rainy days) were explored together with processes tied to the land-atmospherecoupling at the daily scale. Our research was based on simulations with and without soilmoisture-atmosphere coupling with the RCA4 regional climate model. A control simulation wascompared with a sensitivity simulation where the soil moisture was prescribed with the dailyclimatological values from the control run. The ERA5 reanalysis and the satellite precipitationproducts TRMM-3B42 v7 and CMORPH v1.0 bias corrected were used for comparativepurposes. From the diurnal water balance analysis we found that moisture flux convergence inthe region is the main driver for nocturnal precipitation while local evapotranspiration feedsafternoon rain events. Rainy afternoons do not show differences between simulations, but rainynights seem to be affected. Moreover, daily correlations between surface and boundary-layervariables showed that the local coupling is weaker during rainy days than during clear-sky days.Therefore, we suggest that changes in non-local drivers, such as the moisture flux through theSALLJ, are more relevant for rainy nights than the local coupling.
publishDate 2020
dc.date.none.fl_str_mv 2020-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/143682
Giles, Julián Alberto; Ruscica, Romina; Menendez, Claudio Guillermo; Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere coupling; John Wiley & Sons Ltd; International Journal of Climatology; 41; S1; 7-2020; E768-E778
0899-8418
CONICET Digital
CONICET
url http://hdl.handle.net/11336/143682
identifier_str_mv Giles, Julián Alberto; Ruscica, Romina; Menendez, Claudio Guillermo; Warm-season precipitation drivers in northeastern Argentina: Diurnal cycle of the atmospheric moisture balance and land–atmosphere coupling; John Wiley & Sons Ltd; International Journal of Climatology; 41; S1; 7-2020; E768-E778
0899-8418
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/joc.6724
info:eu-repo/semantics/altIdentifier/doi/10.1002/joc.6724
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons Ltd
publisher.none.fl_str_mv John Wiley & Sons Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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