A comparative analysis of the temperature behavior and multiple tropopause events derived from GPS, radiosonde and reanalysis datasets over Argentina, as an example of Southern mid latitudes

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Abstract: Recent research on climatologies for temperature structure and tropopause parameters in the tropics, based on radiosonde, satellites data and model reanalysis show good agreement between radiosonde (RS) and data derived from remote sounding, such as GPS Radio Occultation (GPS RO), and rean...

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Detalles Bibliográficos
Autores principales: Lakkis, Susan Gabriela, Canziani, Pablo O.
Otros Autores: PEPACG – UCA/CONICET (Programa para el Estudio de Procesos Atmosféricos en el Cambio Global)
Formato: Artículo
Lenguaje:Inglés
Publicado: Universidad Católica Argentina 2019
Materias:
TELEDETECCION
TROPOPAUSA
GPS
CLIMATOLOGIA
Acceso en línea:https://repositorio.uca.edu.ar/handle/123456789/5426
Aporte de:
Repositorio Institucional de la Universidad Católica Argentina (UCA) de Universidad Católica Argentina
id I33-R139-123456789-5426
record_format dspace
institution Universidad Católica Argentina
institution_str I-33
repository_str R-139
collection Repositorio Institucional de la Universidad Católica Argentina (UCA)
language Inglés
topic TELEDETECCION
TROPOPAUSA
GPS
CLIMATOLOGIA
spellingShingle TELEDETECCION
TROPOPAUSA
GPS
CLIMATOLOGIA
Lakkis, Susan Gabriela
Canziani, Pablo O.
A comparative analysis of the temperature behavior and multiple tropopause events derived from GPS, radiosonde and reanalysis datasets over Argentina, as an example of Southern mid latitudes
topic_facet TELEDETECCION
TROPOPAUSA
GPS
CLIMATOLOGIA
description Abstract: Recent research on climatologies for temperature structure and tropopause parameters in the tropics, based on radiosonde, satellites data and model reanalysis show good agreement between radiosonde (RS) and data derived from remote sounding, such as GPS Radio Occultation (GPS RO), and reanalysis. The agreement is remarkably good over and immediately near the tropics. However, in the southern extra tropical region, especially at medium and high latitudes, there are often considerable differences in the temperature profiles as latitudes increases, which depends on the variability of location and evolution of the tropopause. The purpose of this work is to compare the behaviour of temperature profiles derived from GPS RO, daily and monthly ERA 40 reanalysis means and nearby radiosonde measurements in the southern extra tropical region. Argentina serves as an example of latitudes between 30- 60S. The data covers 2001-2002 and analyses parameters such as temperature, pressure, and height derived rom radiosonde and satellite data in order to detect single and multiple tropopause events. The results show that in most cases are GPS RO more closely related to RS measurements than to reanalysis profiles, both for daily values, monthly means and their standard deviations. However, GPS RO deviations increase with respect to RS for heights above the tropopause, i.e., in the stratosphere, and decrease into the troposphere. Radiosonde and GPS appear to be in good agreement for tropopause temperatures and heights estimates when a single tropopause (LRT1) is considered, but with decreasing agreement as latitudes increase. Furthermore, while single and double tropopause events can be detected in RS observations this is less common for the GPS RO retrievals.
author2 PEPACG – UCA/CONICET (Programa para el Estudio de Procesos Atmosféricos en el Cambio Global)
author_facet PEPACG – UCA/CONICET (Programa para el Estudio de Procesos Atmosféricos en el Cambio Global)
Lakkis, Susan Gabriela
Canziani, Pablo O.
format Artículo
author Lakkis, Susan Gabriela
Canziani, Pablo O.
author_sort Lakkis, Susan Gabriela
title A comparative analysis of the temperature behavior and multiple tropopause events derived from GPS, radiosonde and reanalysis datasets over Argentina, as an example of Southern mid latitudes
title_short A comparative analysis of the temperature behavior and multiple tropopause events derived from GPS, radiosonde and reanalysis datasets over Argentina, as an example of Southern mid latitudes
title_full A comparative analysis of the temperature behavior and multiple tropopause events derived from GPS, radiosonde and reanalysis datasets over Argentina, as an example of Southern mid latitudes
title_fullStr A comparative analysis of the temperature behavior and multiple tropopause events derived from GPS, radiosonde and reanalysis datasets over Argentina, as an example of Southern mid latitudes
title_full_unstemmed A comparative analysis of the temperature behavior and multiple tropopause events derived from GPS, radiosonde and reanalysis datasets over Argentina, as an example of Southern mid latitudes
title_sort comparative analysis of the temperature behavior and multiple tropopause events derived from gps, radiosonde and reanalysis datasets over argentina, as an example of southern mid latitudes
publisher Universidad Católica Argentina
publishDate 2019
url https://repositorio.uca.edu.ar/handle/123456789/5426
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AT lakkissusangabriela comparativeanalysisofthetemperaturebehaviorandmultipletropopauseeventsderivedfromgpsradiosondeandreanalysisdatasetsoverargentinaasanexampleofsouthernmidlatitudes
AT canzianipabloo comparativeanalysisofthetemperaturebehaviorandmultipletropopauseeventsderivedfromgpsradiosondeandreanalysisdatasetsoverargentinaasanexampleofsouthernmidlatitudes
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spelling I33-R139-123456789-54262024-03-07T12:23:37Z A comparative analysis of the temperature behavior and multiple tropopause events derived from GPS, radiosonde and reanalysis datasets over Argentina, as an example of Southern mid latitudes Lakkis, Susan Gabriela Canziani, Pablo O. PEPACG – UCA/CONICET (Programa para el Estudio de Procesos Atmosféricos en el Cambio Global) TELEDETECCION TROPOPAUSA GPS CLIMATOLOGIA Abstract: Recent research on climatologies for temperature structure and tropopause parameters in the tropics, based on radiosonde, satellites data and model reanalysis show good agreement between radiosonde (RS) and data derived from remote sounding, such as GPS Radio Occultation (GPS RO), and reanalysis. The agreement is remarkably good over and immediately near the tropics. However, in the southern extra tropical region, especially at medium and high latitudes, there are often considerable differences in the temperature profiles as latitudes increases, which depends on the variability of location and evolution of the tropopause. The purpose of this work is to compare the behaviour of temperature profiles derived from GPS RO, daily and monthly ERA 40 reanalysis means and nearby radiosonde measurements in the southern extra tropical region. Argentina serves as an example of latitudes between 30- 60S. The data covers 2001-2002 and analyses parameters such as temperature, pressure, and height derived rom radiosonde and satellite data in order to detect single and multiple tropopause events. The results show that in most cases are GPS RO more closely related to RS measurements than to reanalysis profiles, both for daily values, monthly means and their standard deviations. However, GPS RO deviations increase with respect to RS for heights above the tropopause, i.e., in the stratosphere, and decrease into the troposphere. Radiosonde and GPS appear to be in good agreement for tropopause temperatures and heights estimates when a single tropopause (LRT1) is considered, but with decreasing agreement as latitudes increase. Furthermore, while single and double tropopause events can be detected in RS observations this is less common for the GPS RO retrievals. Resumen: Investigaciones recientes sobre climatología de la estructura térmica y parámetros de tropopausa en los trópicos, basadas en radiosondas, datos de satélite y productos de reanálisis, muestran una buena concordancia entre los radiosondeos (RS) y los datos derivados de ocultaciones, como las radio ocultaciones del GPS (GPS RO), y los reanálisis. Sin embargo, en la región meridional extratropical, especialmente en latitudes medias y altas, a menudo hay considerables diferencias en los perfiles de temperatura al ir aumentando la latitud, dependiendo de la variabilidad de la altura y evolución de la tropopausa. El propósito del presente trabajo es mostrar el comportamiento de los perfiles de temperatura obtenidos de las ocultaciones GPS y los perfiles diarios y mensuales de reanálisis derivados del ERA 40 comparados con los valores de radiosondeo para eventos detectados en Argentina, como ejemplo de latitudes entre 30 y 60 sur, durante el período 2001-2002. Por otro lado, el estudio analiza también parámetros como la temperatura, altura y presión de los niveles significativos de radiosondeo y de las ocultaciones con el fin de analizar la existencia de eventos con simple y múltiple tropopausa. Los resultados obtenidos de la comparación entre las diferentes bases de datos muestran que en la mayoría de los casos las ocultaciones proveen perfiles de temperatura semejantes a aquellos graficados a partir de datos de radiosondeo, en contraposición a los obtenidos a partir de los productos de reanálisis, tanto diarios como mensuales. No obstante es posible observar que las diferencias entre las RO y los RS son más notorias para alturas superiores a los niveles de tropopausa, mientras que decrecen en la troposfera. Relacionado con los eventos de múltiple tropopausa, el análisis realizado muestra que los valores de temperatura y altura de la tropopausa de las RS y las RO son semejantes cuando sólo es considerada la LRT1, con diferencias crecientes a medida que las estaciones analizadas están ubicadas en latitudes más altas. A pesar de esta concordancia para la LRT1, los resultados muestran que solo los datos procedentes de radiosondeos son capaces de detectar eventos con LRT2 y LRT3. 2019-06-06T00:48:13Z 2019-06-06T00:48:13Z 2009 Artículo Lakkis, S. G. y P. O. Canziani. 2009. A comparative analysis of the temperature behavior and multiple tropopause events derived from GPS, radiosonde and reanalysis datasets over Argentina, as an example of Southern mid latitudes [en línea]. Revista de Climatología. 9. Disponible en: https://repositorio.uca.edu.ar/handle/123456789/5426 https://repositorio.uca.edu.ar/handle/123456789/5426 eng Acceso Abierto https://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Universidad Católica Argentina

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