Relation of STT-Based Enso Indices With The Euro-Mediterranean Temperature Variability
El Niño-Southern Oscillation (ENSO) is a climate phenomenon that causes large scaleclimate variability. It is a coupled mode of ocean-atmosphere interaction between sealevel pressure and sea surface temperature fluctuations in the equatorial Pacific. Typically, in order to observe the phenomena, an...
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Avrasya Yer Bilimleri Enstitüsü
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ftistanbultuniv:oai:polen.itu.edu.tr:11527/18723 2023-05-15T15:15:24+02:00 Relation of STT-Based Enso Indices With The Euro-Mediterranean Temperature Variability STT Tabanlı Enso İndislerinin Avrupa-Akdeniz Sıcaklık Değişkenliği İle İlişkisi Yavuzsoy, Ece Şen, Ömer Lütfi 601181006 İklim ve Deniz Bilimleri Anabilim Dalı Climate and Marine Sciences 2020-10-14T11:38:06Z application/pdf http://hdl.handle.net/11527/18723 eng eng Avrasya Yer Bilimleri Enstitüsü Eurasia Institute of Earth Sciences http://hdl.handle.net/11527/18723 All works uploaded to the institutional repository are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Kurumsal arşive yüklenen tüm eserler telif hakkı ile korunmaktadır. Bunlar, bu kaynak üzerinden herhangi bir amaçla görüntülenebilir, ancak yazılı izin alınmadan herhangi bir biçimde yeniden oluşturulması veya dağıtılması yasaklanmıştır. Temperature Variability Sıcaklık Değişkenliği Thesis 2020 ftistanbultuniv 2022-10-20T20:02:47Z El Niño-Southern Oscillation (ENSO) is a climate phenomenon that causes large scaleclimate variability. It is a coupled mode of ocean-atmosphere interaction between sealevel pressure and sea surface temperature fluctuations in the equatorial Pacific. Typically, in order to observe the phenomena, an ENSO index is used, which is formed with sea surface temperature anomalies. Positive (El Niño phase) and negative (La Niña phase) temperature anomaly have different effects on a global scale. SST-based indexes are created by taking the average of four different regions. These regions, fromthe Peruvian shores to the center of equatorial Pacific, are listed as follows: NINO1+2, NINO3, NINO3.4 and NINO4. Indexes can create different oscillations during thesame period. In addition, even they differ in some regions the effect of each index issimilar. According to some studies (e.g. Ziv et al., 2006; Lolis & Türkeş, 2016) negative phase Arctic Oscillation affects temperature, sea level pressure and 500 hPa geopotential height anomalies (z500) of the Euro-Mediterranean region. Sen et al. (2019) mentioned that, in negative phases of AO and ENSO, strengthening East Asian trough pushes the Mediterranean trough towards west. Consequently, a dipole pattern forms over Euro-Mediterranean region. Sen et al. (2019) study suggested that, NINO1+2 index is more effective on dipole pattern, although NINO3.4 is commonly used. In this study, we investigated which ENSO index is more related to the dipole pattern in the Euro-Mediterranean region. Analyses were conducted for boreal winters (December-January-February) of 70 years between 1950-2019. Correlation analysis indicated that NINO1+2 index is better correlated with z500, sea level pressure and surface temperature than the other indices over the Euro- Mediterranean region. In addition, in the La Niña phase, it has a significant relationship with the omega blocking system formed over Europe. According to some studies (Pozo-Vazquez et al., 2001, 2005), the negative (cold) phase of ... Thesis Arctic ITU Academic Open Archive Arctic Pacific Vazquez ENVELOPE(-64.000,-64.000,-65.433,-65.433) |
institution |
Open Polar |
collection |
ITU Academic Open Archive |
op_collection_id |
ftistanbultuniv |
language |
English |
topic |
Temperature Variability Sıcaklık Değişkenliği |
spellingShingle |
Temperature Variability Sıcaklık Değişkenliği Yavuzsoy, Ece Relation of STT-Based Enso Indices With The Euro-Mediterranean Temperature Variability |
topic_facet |
Temperature Variability Sıcaklık Değişkenliği |
description |
El Niño-Southern Oscillation (ENSO) is a climate phenomenon that causes large scaleclimate variability. It is a coupled mode of ocean-atmosphere interaction between sealevel pressure and sea surface temperature fluctuations in the equatorial Pacific. Typically, in order to observe the phenomena, an ENSO index is used, which is formed with sea surface temperature anomalies. Positive (El Niño phase) and negative (La Niña phase) temperature anomaly have different effects on a global scale. SST-based indexes are created by taking the average of four different regions. These regions, fromthe Peruvian shores to the center of equatorial Pacific, are listed as follows: NINO1+2, NINO3, NINO3.4 and NINO4. Indexes can create different oscillations during thesame period. In addition, even they differ in some regions the effect of each index issimilar. According to some studies (e.g. Ziv et al., 2006; Lolis & Türkeş, 2016) negative phase Arctic Oscillation affects temperature, sea level pressure and 500 hPa geopotential height anomalies (z500) of the Euro-Mediterranean region. Sen et al. (2019) mentioned that, in negative phases of AO and ENSO, strengthening East Asian trough pushes the Mediterranean trough towards west. Consequently, a dipole pattern forms over Euro-Mediterranean region. Sen et al. (2019) study suggested that, NINO1+2 index is more effective on dipole pattern, although NINO3.4 is commonly used. In this study, we investigated which ENSO index is more related to the dipole pattern in the Euro-Mediterranean region. Analyses were conducted for boreal winters (December-January-February) of 70 years between 1950-2019. Correlation analysis indicated that NINO1+2 index is better correlated with z500, sea level pressure and surface temperature than the other indices over the Euro- Mediterranean region. In addition, in the La Niña phase, it has a significant relationship with the omega blocking system formed over Europe. According to some studies (Pozo-Vazquez et al., 2001, 2005), the negative (cold) phase of ... |
author2 |
Şen, Ömer Lütfi 601181006 İklim ve Deniz Bilimleri Anabilim Dalı Climate and Marine Sciences |
format |
Thesis |
author |
Yavuzsoy, Ece |
author_facet |
Yavuzsoy, Ece |
author_sort |
Yavuzsoy, Ece |
title |
Relation of STT-Based Enso Indices With The Euro-Mediterranean Temperature Variability |
title_short |
Relation of STT-Based Enso Indices With The Euro-Mediterranean Temperature Variability |
title_full |
Relation of STT-Based Enso Indices With The Euro-Mediterranean Temperature Variability |
title_fullStr |
Relation of STT-Based Enso Indices With The Euro-Mediterranean Temperature Variability |
title_full_unstemmed |
Relation of STT-Based Enso Indices With The Euro-Mediterranean Temperature Variability |
title_sort |
relation of stt-based enso indices with the euro-mediterranean temperature variability |
publisher |
Avrasya Yer Bilimleri Enstitüsü |
publishDate |
2020 |
url |
http://hdl.handle.net/11527/18723 |
long_lat |
ENVELOPE(-64.000,-64.000,-65.433,-65.433) |
geographic |
Arctic Pacific Vazquez |
geographic_facet |
Arctic Pacific Vazquez |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
http://hdl.handle.net/11527/18723 |
op_rights |
All works uploaded to the institutional repository are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. Kurumsal arşive yüklenen tüm eserler telif hakkı ile korunmaktadır. Bunlar, bu kaynak üzerinden herhangi bir amaçla görüntülenebilir, ancak yazılı izin alınmadan herhangi bir biçimde yeniden oluşturulması veya dağıtılması yasaklanmıştır. |
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