The foehn wind east of the Andes in a 20-year climate simulation

This study investigates the spatial structure and the seasonal occurrence of foehn wind to the east of the Andes using a flow blocking analysis in a 20-year climate simulation. The latter was performed by the Eta-CPTEC regional model at 50-km horizontal resolution. This version of the model includes...

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Detalles Bibliográficos
Autores principales: Antico, Pablo Luis, Chou, Sin Chan, Brunini, Claudio Antonio
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Ciencias Astronómicas
Física
foehn wind
spatial structure
seasonal occurrence
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/139492
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-139492
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Física
foehn wind
spatial structure
seasonal occurrence
spellingShingle Ciencias Astronómicas
Física
foehn wind
spatial structure
seasonal occurrence
Antico, Pablo Luis
Chou, Sin Chan
Brunini, Claudio Antonio
The foehn wind east of the Andes in a 20-year climate simulation
topic_facet Ciencias Astronómicas
Física
foehn wind
spatial structure
seasonal occurrence
description This study investigates the spatial structure and the seasonal occurrence of foehn wind to the east of the Andes using a flow blocking analysis in a 20-year climate simulation. The latter was performed by the Eta-CPTEC regional model at 50-km horizontal resolution. This version of the model includes a cut-cell scheme to represent topography and a finite-volume vertical advection scheme for dynamic variables. The results indicate that foehn wind more frequently blows during winter and spring on the eastern slopes of the Andes, except to the south of 37° S where it blows at all seasons. Higher mountains of the Central Andes (27° S–35° S) and the High Plateau (15° S–27° S) result in blocked foehn events, with a weak adjustment to the geostrophic balance. On the Central Andes, rain and snow on mountain tops may also contribute to generate foehn wind on the eastern slopes. The results show that a low pressure develops to the east of the Central Andes, and also to the east of the High Plateau when foehn blows. Lower mountains in Patagonia (to the south of 37° S) result in more frequent non-blocked foehn event, with better adjustment to the geostrophic balance.
format Articulo
Articulo
author Antico, Pablo Luis
Chou, Sin Chan
Brunini, Claudio Antonio
author_facet Antico, Pablo Luis
Chou, Sin Chan
Brunini, Claudio Antonio
author_sort Antico, Pablo Luis
title The foehn wind east of the Andes in a 20-year climate simulation
title_short The foehn wind east of the Andes in a 20-year climate simulation
title_full The foehn wind east of the Andes in a 20-year climate simulation
title_fullStr The foehn wind east of the Andes in a 20-year climate simulation
title_full_unstemmed The foehn wind east of the Andes in a 20-year climate simulation
title_sort foehn wind east of the andes in a 20-year climate simulation
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/139492
work_keys_str_mv AT anticopabloluis thefoehnwindeastoftheandesina20yearclimatesimulation
AT chousinchan thefoehnwindeastoftheandesina20yearclimatesimulation
AT bruniniclaudioantonio thefoehnwindeastoftheandesina20yearclimatesimulation
AT anticopabloluis foehnwindeastoftheandesina20yearclimatesimulation
AT chousinchan foehnwindeastoftheandesina20yearclimatesimulation
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