@article {23960,
	title = {On the decadal increase in the tropical mean outgoing longwave radiation for the period 1984-2000},
	volume = {4},
	year = {2004},
	month = {2004/08/1},
	pages = {1419 - 1425},
	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 20{\textdegree}N and 20{\textdegree}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{\textpm}0.2Wm<SUP>-2</SUP>/decade, which is lower than that displayed by the ERBS time-series (3.5{\textpm}0.3Wm<SUP>-2</SUP>). 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.},
	isbn = {1680-73671680-73161680-7324       Atmospheric Chemistry and Physics},
	url = {https://ui.adsabs.harvard.edu/abs/2004ACP.....4.1419H},
	author = {Hatzidimitriou, D. and Vardavas, I. and Pavlakis, K. G. and Hatzianastassiou, N. and Matsoukas, C. and Drakakis, E.}
}
