Variations of monsoon systems during the Holocene in the IPSL model

Numerous climate indicators and modelling experiments show the influence of orbital parameters on past variations of Asian and African monsoons. In particular, the monsoon precipitation and circulation were amplified at the beginning of the Holocene, when the insolation received at the top of the at...

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Main Author: Marzin, Charline
Other Authors: Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Université Pierre et Marie Curie - Paris VI, Pascale Braconnot
Format: Doctoral or Postdoctoral Thesis
Language:French
Published: HAL CCSD 2011
Subjects:
Online Access:https://tel.archives-ouvertes.fr/tel-00825378
https://tel.archives-ouvertes.fr/tel-00825378/document
https://tel.archives-ouvertes.fr/tel-00825378/file/these_Charline_Marzin.pdf
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record_format openpolar
spelling ftccsdartic:oai:HAL:tel-00825378v1 2023-05-15T16:41:33+02:00 Variations of monsoon systems during the Holocene in the IPSL model Variations des systèmes de mousson à l'Holocène dans le modèle de l'IPSL Marzin, Charline Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) Université Pierre et Marie Curie - Paris VI Pascale Braconnot 2011-02-28 https://tel.archives-ouvertes.fr/tel-00825378 https://tel.archives-ouvertes.fr/tel-00825378/document https://tel.archives-ouvertes.fr/tel-00825378/file/these_Charline_Marzin.pdf fr fre HAL CCSD NNT: 2011PA066160 tel-00825378 https://tel.archives-ouvertes.fr/tel-00825378 https://tel.archives-ouvertes.fr/tel-00825378/document https://tel.archives-ouvertes.fr/tel-00825378/file/these_Charline_Marzin.pdf info:eu-repo/semantics/OpenAccess https://tel.archives-ouvertes.fr/tel-00825378 Océan, Atmosphère. Université Pierre et Marie Curie - Paris VI, 2011. Français. ⟨NNT : 2011PA066160⟩ Mousson Holocène Paléoclimats Paramètres orbitaux Inde Afrique [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/doctoralThesis Theses 2011 ftccsdartic 2021-12-19T03:17:42Z Numerous climate indicators and modelling experiments show the influence of orbital parameters on past variations of Asian and African monsoons. In particular, the monsoon precipitation and circulation were amplified at the beginning of the Holocene, when the insolation received at the top of the atmosphere was maximum during boreal summer. This study analyses the variations of monsoons systems over the Sahel, India and East-Asia at the beginning of the Holocene (9.5 kyr BP) and at the Mid-Holocene (6 kyr BP) with the IPSL-CM4 coupled model. This work highlights the role of precession of equinoxes and the influence of several climate feedbacks in modifying the seasonality and the relative amplification of monsoon systems throughout the Holocene. The amplitude and the phase of the mechanisms by which monsoons respond to insolation changes vary over India and Africa. This thesis also discusses the possible role of teleconnections between monsoons and the mid-latitudes. Sensitivity experiments to the reminiscent ice sheet at the beginning of the Holocene and to the freshwater flux due to ice melting in the North Atlantic show different responses of the Asian and African systems to these forcings. To complement these experiments, the impact of freshwater flux in the North Atlantic on monsoon systems is compared for several past (Eemian, Last Glacial Maximum, Early Holocene, Mid-Holocene), present and future periods. The results of the modelling experiments at the Holocene and at the Last Glacial Maximum have been compared with paleoclimatic marine records in the Indian Ocean De nombreux indicateurs climatiques et expériences de modélisation montrent l'influence des paramètres de l'orbite terrestre sur les variations passées des systèmes de mousson en Asie et en Afrique. En particulier, les moussons sont amplifiées au début de l'Holocène, période de maximum d'insolation au sommet de l'atmosphère pendant l'été boréal. Ce travail s'intéresse aux variations des systèmes de mousson du Sahel, d'Inde et d'Asie du sud-est ... Doctoral or Postdoctoral Thesis Ice Sheet North Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Indian
institution Open Polar
collection Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
op_collection_id ftccsdartic
language French
topic Mousson
Holocène
Paléoclimats
Paramètres orbitaux
Inde
Afrique
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
spellingShingle Mousson
Holocène
Paléoclimats
Paramètres orbitaux
Inde
Afrique
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
Marzin, Charline
Variations of monsoon systems during the Holocene in the IPSL model
topic_facet Mousson
Holocène
Paléoclimats
Paramètres orbitaux
Inde
Afrique
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
description Numerous climate indicators and modelling experiments show the influence of orbital parameters on past variations of Asian and African monsoons. In particular, the monsoon precipitation and circulation were amplified at the beginning of the Holocene, when the insolation received at the top of the atmosphere was maximum during boreal summer. This study analyses the variations of monsoons systems over the Sahel, India and East-Asia at the beginning of the Holocene (9.5 kyr BP) and at the Mid-Holocene (6 kyr BP) with the IPSL-CM4 coupled model. This work highlights the role of precession of equinoxes and the influence of several climate feedbacks in modifying the seasonality and the relative amplification of monsoon systems throughout the Holocene. The amplitude and the phase of the mechanisms by which monsoons respond to insolation changes vary over India and Africa. This thesis also discusses the possible role of teleconnections between monsoons and the mid-latitudes. Sensitivity experiments to the reminiscent ice sheet at the beginning of the Holocene and to the freshwater flux due to ice melting in the North Atlantic show different responses of the Asian and African systems to these forcings. To complement these experiments, the impact of freshwater flux in the North Atlantic on monsoon systems is compared for several past (Eemian, Last Glacial Maximum, Early Holocene, Mid-Holocene), present and future periods. The results of the modelling experiments at the Holocene and at the Last Glacial Maximum have been compared with paleoclimatic marine records in the Indian Ocean De nombreux indicateurs climatiques et expériences de modélisation montrent l'influence des paramètres de l'orbite terrestre sur les variations passées des systèmes de mousson en Asie et en Afrique. En particulier, les moussons sont amplifiées au début de l'Holocène, période de maximum d'insolation au sommet de l'atmosphère pendant l'été boréal. Ce travail s'intéresse aux variations des systèmes de mousson du Sahel, d'Inde et d'Asie du sud-est ...
author2 Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE)
Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)
Université Pierre et Marie Curie - Paris VI
Pascale Braconnot
format Doctoral or Postdoctoral Thesis
author Marzin, Charline
author_facet Marzin, Charline
author_sort Marzin, Charline
title Variations of monsoon systems during the Holocene in the IPSL model
title_short Variations of monsoon systems during the Holocene in the IPSL model
title_full Variations of monsoon systems during the Holocene in the IPSL model
title_fullStr Variations of monsoon systems during the Holocene in the IPSL model
title_full_unstemmed Variations of monsoon systems during the Holocene in the IPSL model
title_sort variations of monsoon systems during the holocene in the ipsl model
publisher HAL CCSD
publishDate 2011
url https://tel.archives-ouvertes.fr/tel-00825378
https://tel.archives-ouvertes.fr/tel-00825378/document
https://tel.archives-ouvertes.fr/tel-00825378/file/these_Charline_Marzin.pdf
geographic Indian
geographic_facet Indian
genre Ice Sheet
North Atlantic
genre_facet Ice Sheet
North Atlantic
op_source https://tel.archives-ouvertes.fr/tel-00825378
Océan, Atmosphère. Université Pierre et Marie Curie - Paris VI, 2011. Français. ⟨NNT : 2011PA066160⟩
op_relation NNT: 2011PA066160
tel-00825378
https://tel.archives-ouvertes.fr/tel-00825378
https://tel.archives-ouvertes.fr/tel-00825378/document
https://tel.archives-ouvertes.fr/tel-00825378/file/these_Charline_Marzin.pdf
op_rights info:eu-repo/semantics/OpenAccess
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