Spatial and temporal 850 hPA air temperature and sea-surface temperature covariances in the Mediterranean region and their connection to atmospheric circulation
| dc.contributor.author | Lolis, C. J. | en |
| dc.contributor.author | Bartzokas, A. | en |
| dc.contributor.author | Katsoulis, B. D. | en |
| dc.date.accessioned | 2015-11-24T18:35:12Z | |
| dc.date.available | 2015-11-24T18:35:12Z | |
| dc.identifier.issn | 0899-8418 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/17059 | |
| dc.rights | Default Licence | - |
| dc.subject | 850 hpa air temperature | en |
| dc.subject | sea-surface temperature (sst) | en |
| dc.subject | mediterranean sea | en |
| dc.subject | mediterranean oscillation | en |
| dc.subject | factor analysis | en |
| dc.subject | canonical correlation analysis | en |
| dc.subject | principal components | en |
| dc.subject | last century | en |
| dc.subject | precipitation | en |
| dc.subject | atlantic | en |
| dc.subject | anomalies | en |
| dc.subject | covariability | en |
| dc.subject | oscillation | en |
| dc.subject | climatology | en |
| dc.subject | europe | en |
| dc.subject | winter | en |
| dc.title | Spatial and temporal 850 hPA air temperature and sea-surface temperature covariances in the Mediterranean region and their connection to atmospheric circulation | en |
| heal.abstract | The spatial and temporal covariability between the lower troposphere and sea surface temperatures (SSTs) are Studied in the Mediterranean basin for the period 1958-98. Monthly air temperature anomalies for the 850 hPa pressure level (T-850hPa) at 2.5degrees x 2.5degrees grid points and SST anomalies in 5degrees x 5degrees grid boxes are utilized. As a first step, factor analysis is applied oil both sets of data in order to reduce their dimensionality. Then, canonical correlation analysis is applied and this leads to one statistically significant pair of canonical variates for winter and to two pairs for summer. In winter, a teleconnection (see-saw) between western Europe and the eastern Mediterranean at the 850 hPa level is revealed, and a corresponding weaker one between the areas of central-west and eastern Mediterranean for SST. The correlation between T-850hPa and SST appears higher over the eastern Mediterranean. In summer, the first pair of canonical variates reveals a covariability between T-850hPa and SST in the western Mediterranean, and the second one shows a covariability in the eastern Mediterranean, without the existence of any strong spatial teleconnection. The analysis is repeated, using time lags of I month, or longer, in order to detect any possible non-synchronous relation. Statistically significant results are found only when T-850hPa leads SST with a time lag of I month. In particular, the results are statistically significant for winter only, and the findings are similar to those of the first analysis. Therefore, the existence of a I month time scale SST persistence is detected for winter months. Copyright (C) 2002 Royal Meteorological Society. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | Doi 10.1002/Joc.759 | - |
| heal.identifier.secondary | <Go to ISI>://000176177400003 | - |
| heal.identifier.secondary | http://onlinelibrary.wiley.com/store/10.1002/joc.759/asset/759_ftp.pdf?v=1&t=hfwdvmdt&s=35c6dd3694cbc53b0c866508e84c3995eedbec88 | - |
| heal.journalName | International Journal of Climatology | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2002 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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