Shannon Mason edited CRE_SW.tex  almost 10 years ago

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\section{Shortwave cloud radiative effect bias}  The $\textrm{CRE}_{\textrm{SW}}$ bias can be decomposed into parts relating to the cloud radiative properties ($\Delta \textrm{CRE}$), the occurrence of the cloud regime ($\Delta \textrm{RFO}$), and a cross-term.   Figure~\ref{fig:CRE_SW} shows the decomposed cloud biases related to the hybrid cloud regimes. We observe:  \begin{itemize}  \item There is a clear compensation of the optically-thin cloud regimes for the optically-thick cloud regimes:  \begin{itemize}  \item H1 and H2 for H3  \item H4 for H5  \item H6 for H7  \end{itemize}  \item However, there is little apparent compensation for the optically-thick mid-topped cloud regimes H8 and H9, which are most frequent near the cyclone centre and in the poleward skirt of the composite cyclone.  \item The optically thin compensating cloud regimes are represented fairly accurately ($\Delta \textrm{CRE}$), but occur too frequently; while the optically thick mid-topped cloud regimes have significant contributions from the cloud radiative properties being represented incorrectly.  \end{itemize}