On the decadal increase in the tropical mean outgoing longwave radiation for the period 1984-2000
| dc.contributor.author | Hatzidimitriou, D. | en |
| dc.contributor.author | Vardavas, I. | en |
| dc.contributor.author | Pavlakis, K. G. | en |
| dc.contributor.author | Hatzianastassiou, N. | en |
| dc.contributor.author | Matsoukas, C. | en |
| dc.contributor.author | Drakakis, E. | en |
| dc.date.accessioned | 2015-11-24T18:39:38Z | |
| dc.date.available | 2015-11-24T18:39:38Z | |
| dc.identifier.issn | 1680-7324 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/17470 | |
| dc.rights | Default Licence | - |
| dc.subject | budget | en |
| dc.subject | hemisphere | en |
| dc.subject | model | en |
| dc.title | On the decadal increase in the tropical mean outgoing longwave radiation for the period 1984-2000 | en |
| heal.abstract | In the present paper, we have calculated the outgoing longwave radiation at the top of the atmosphere (OLR at TOA) using a deterministic radiation transfer model, cloud data from ISCCP-D, and atmospheric temperature and humidity data from NCEP/NCAR reanalysis, for the seventeen-year period 1984 - 2000. We constructed anomaly time-series of the OLR at TOA, as well as of all of the key input climatological data, averaged in the tropical region between 20degrees N and 20degrees S. We compared the anomaly time-series of the model calculated OLR at TOA with that obtained from the ERBE S-10N (WFOV NF edition 2) non-scanner measurements. The model results display very similar seasonal and inter-annual variability as the ERBS data, and indicate a decadal increase of OLR at TOA of 1.9 +/- 0.2W m(-2)/ decade, which is lower than that displayed by the ERBS time-series (3.5 +/- 0.3Wm(-2)). Analysis of the inter-annual and long-term variability of the various parameters determining the OLR at TOA, showed that the most important contribution to the observed trend comes from a decrease in high-level cloud cover over the period 1984 - 2000, followed by an apparent drying of the upper troposphere and a decrease in low-level cloudiness. Opposite but small trends are introduced by a decrease in low-level cloud top pressure, an apparent cooling of the lower stratosphere ( at the 50 mbar level) and a small decadal increase in mid-level cloud cover. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | <Go to ISI>://000223603500002 | - |
| heal.journalName | Atmospheric Chemistry and Physics | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2004 | - |
| 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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