The Annual Cycle of Earth Radiation Budget from Clouds and the Earth’s Radiant Energy System (CERES) Data

Content Provider	Semantic Scholar
Author	Mlynczak, Pamela E. Smith, Gregory L. Doelling, David R.
Copyright Year	2010
Abstract	AbstractThe seasonal cycle of the Earth radiation budget is investigated by use of data from the Clouds and the Earth's Radiant Energy System (CERES). Monthly mean maps of reflected solar flux and Earth-emitted flux on a 1° equal-angle grid are used for the study. The seasonal cycles of absorbed solar radiation (ASR), outgoing longwave radiation (OLR), and net radiation are described by use of principal components for the time variations, for which the corresponding geographic variations are the empirical orthogonal functions. Earth's surface is partitioned into land and ocean for the analysis. The first principal component describes more than 95% of the variance in the seasonal cycle of ASR and the net radiation fluxes and nearly 90% of the variance of OLR over land. Because one term can express so much of the variance, principal component analysis is very useful to describe these seasonal cycles. The annual cycles of ASR are about 100 W m−2 over land and ocean, but the amplitudes of OLR are about 27 W m.
Starting Page	2490
Ending Page	2503
Page Count	14
File Format	PDF HTM / HTML
DOI	10.1175/JAMC-D-11-050.1
Volume Number	50
Alternate Webpage(s)	https://ams.confex.com/ams/pdfpapers/171403.pdf
Alternate Webpage(s)	https://doi.org/10.1175/JAMC-D-11-050.1
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article