<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Hatzidimitriou, D.</style></author><author><style face="normal" font="default" size="100%">Vardavas, I.</style></author><author><style face="normal" font="default" size="100%">Pavlakis, K. G.</style></author><author><style face="normal" font="default" size="100%">Hatzianastassiou, N.</style></author><author><style face="normal" font="default" size="100%">Matsoukas, C.</style></author><author><style face="normal" font="default" size="100%">Drakakis, E.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">On the decadal increase in the tropical mean outgoing longwave radiation for the period 1984-2000</style></title><short-title><style face="normal" font="default" size="100%">Atmospheric Chemistry &amp; Physics</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004/08/1</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://ui.adsabs.harvard.edu/abs/2004ACP.....4.1419H</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">4</style></volume><pages><style face="normal" font="default" size="100%">1419 - 1425</style></pages><isbn><style face="normal" font="default" size="100%">1680-73671680-73161680-7324       Atmospheric Chemistry and Physics</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">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 20°N and 20°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±0.2Wm&lt;SUP&gt;-2&lt;/SUP&gt;/decade, which is lower than that displayed by the ERBS time-series (3.5±0.3Wm&lt;SUP&gt;-2&lt;/SUP&gt;). 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 50mbar level) and a small decadal increase in mid-level cloud cover.</style></abstract></record></records></xml>