High-resolution dynamical downscaling of re-analysis data over the Kerguelen Islands using the WRF model
We have used theWeather Research and Forecasting (WRF) model to simulate the climate of the Kerguelen Islands (49° S, 69° E) and investigate its inter-annual variability. Here, we have dynamically downscaled 30 years of the Climate Forecast System Reanalysis (CFSR) over these islands at 3-km horizon...
Published in: | Theoretical and Applied Climatology |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Nature
2018
|
Subjects: | |
Online Access: | http://hdl.handle.net/10481/59280 https://doi.org/10.1007/s00704-018-2438-0 |
id |
ftunivgranada:oai:digibug.ugr.es:10481/59280 |
---|---|
record_format |
openpolar |
spelling |
ftunivgranada:oai:digibug.ugr.es:10481/59280 2023-05-15T16:38:11+02:00 High-resolution dynamical downscaling of re-analysis data over the Kerguelen Islands using the WRF model Fonseca, Ricardo M. Martín-Torres, Javier 2018-03-06 application/pdf http://hdl.handle.net/10481/59280 https://doi.org/10.1007/s00704-018-2438-0 eng eng Springer Nature Fonseca, R., & Martín-Torres, J. (2019). High-resolution dynamical downscaling of re-analysis data over the Kerguelen Islands using the WRF model. Theoretical and Applied Climatology, 135(3-4), 1259-1277. http://hdl.handle.net/10481/59280 doi:10.1007/s00704-018-2438-0 Atribución 3.0 España http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess CC-BY info:eu-repo/semantics/article 2018 ftunivgranada https://doi.org/10.1007/s00704-018-2438-0 2020-02-05T00:17:42Z We have used theWeather Research and Forecasting (WRF) model to simulate the climate of the Kerguelen Islands (49° S, 69° E) and investigate its inter-annual variability. Here, we have dynamically downscaled 30 years of the Climate Forecast System Reanalysis (CFSR) over these islands at 3-km horizontal resolution. The model output is found to agree well with the station and radiosonde data at the Port-aux-Français station, the only location in the islands for which observational data is available. An analysis of the seasonal mean WRF data showed a general increase in precipitation and decrease in temperature with elevation. The largest seasonal rainfall amounts occur at the highest elevations of the Cook Ice Cap in winter where the summer mean temperature is around 0 °C. Five modes of variability are considered: conventional and Modoki El Niño-Southern Oscillation (ENSO), Indian Ocean Dipole (IOD), Subtropical IOD (SIOD) and Southern Annular Mode (SAM). It is concluded that a key mechanism by which these modes impact the local climate is through interaction with the diurnal cycle in particular in the summer season when it has a larger magnitude. One of the most affected regions is the area just to the east of the Cook Ice Cap extending into the lower elevations between the Gallieni and Courbet Peninsulas. The WRF simulation shows that despite the small annual variability, the atmospheric flow in the Kerguelen Islands is rather complex which may also be the case for the other islands located in the Southern Hemisphere at similar latitudes. Article in Journal/Newspaper Ice cap Kerguelen Islands DIGIBUG: Repositorio Institucional de la Universidad de Granada Indian Kerguelen Kerguelen Islands Theoretical and Applied Climatology 135 3-4 1259 1277 |
institution |
Open Polar |
collection |
DIGIBUG: Repositorio Institucional de la Universidad de Granada |
op_collection_id |
ftunivgranada |
language |
English |
description |
We have used theWeather Research and Forecasting (WRF) model to simulate the climate of the Kerguelen Islands (49° S, 69° E) and investigate its inter-annual variability. Here, we have dynamically downscaled 30 years of the Climate Forecast System Reanalysis (CFSR) over these islands at 3-km horizontal resolution. The model output is found to agree well with the station and radiosonde data at the Port-aux-Français station, the only location in the islands for which observational data is available. An analysis of the seasonal mean WRF data showed a general increase in precipitation and decrease in temperature with elevation. The largest seasonal rainfall amounts occur at the highest elevations of the Cook Ice Cap in winter where the summer mean temperature is around 0 °C. Five modes of variability are considered: conventional and Modoki El Niño-Southern Oscillation (ENSO), Indian Ocean Dipole (IOD), Subtropical IOD (SIOD) and Southern Annular Mode (SAM). It is concluded that a key mechanism by which these modes impact the local climate is through interaction with the diurnal cycle in particular in the summer season when it has a larger magnitude. One of the most affected regions is the area just to the east of the Cook Ice Cap extending into the lower elevations between the Gallieni and Courbet Peninsulas. The WRF simulation shows that despite the small annual variability, the atmospheric flow in the Kerguelen Islands is rather complex which may also be the case for the other islands located in the Southern Hemisphere at similar latitudes. |
format |
Article in Journal/Newspaper |
author |
Fonseca, Ricardo M. Martín-Torres, Javier |
spellingShingle |
Fonseca, Ricardo M. Martín-Torres, Javier High-resolution dynamical downscaling of re-analysis data over the Kerguelen Islands using the WRF model |
author_facet |
Fonseca, Ricardo M. Martín-Torres, Javier |
author_sort |
Fonseca, Ricardo M. |
title |
High-resolution dynamical downscaling of re-analysis data over the Kerguelen Islands using the WRF model |
title_short |
High-resolution dynamical downscaling of re-analysis data over the Kerguelen Islands using the WRF model |
title_full |
High-resolution dynamical downscaling of re-analysis data over the Kerguelen Islands using the WRF model |
title_fullStr |
High-resolution dynamical downscaling of re-analysis data over the Kerguelen Islands using the WRF model |
title_full_unstemmed |
High-resolution dynamical downscaling of re-analysis data over the Kerguelen Islands using the WRF model |
title_sort |
high-resolution dynamical downscaling of re-analysis data over the kerguelen islands using the wrf model |
publisher |
Springer Nature |
publishDate |
2018 |
url |
http://hdl.handle.net/10481/59280 https://doi.org/10.1007/s00704-018-2438-0 |
geographic |
Indian Kerguelen Kerguelen Islands |
geographic_facet |
Indian Kerguelen Kerguelen Islands |
genre |
Ice cap Kerguelen Islands |
genre_facet |
Ice cap Kerguelen Islands |
op_relation |
Fonseca, R., & Martín-Torres, J. (2019). High-resolution dynamical downscaling of re-analysis data over the Kerguelen Islands using the WRF model. Theoretical and Applied Climatology, 135(3-4), 1259-1277. http://hdl.handle.net/10481/59280 doi:10.1007/s00704-018-2438-0 |
op_rights |
Atribución 3.0 España http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s00704-018-2438-0 |
container_title |
Theoretical and Applied Climatology |
container_volume |
135 |
container_issue |
3-4 |
container_start_page |
1259 |
op_container_end_page |
1277 |
_version_ |
1766028470671900672 |