Nomenclature and elsarticle.cls

Hello friends.

I'm preparing a paper for submission in one Elsevier journal, and got stuck on nomenclature list. Is there anybody here who knows how to do nomenclature list just like in picture below.

P.S. I use elsarticle document class.

Attachment 24000

What about the following code?

Code:

---

\begin{tabular}{lp{8.5cm}}
$d$ & day of the year\\
$H$ & monthly average of daily global radiation on horizontal surface
($\mathrm{W}/\mathrm{m}^2\mathrm{day}$)
\end{tabular}
\begin{tabular}{lp{8.5cm}}
$R_b$ & beam radiation conversion factor\\
$R_r$ & ground reflected radiation conversion factor\\
$R_t$ & total radiation conversion factor\\
\end{tabular}

---

I know how to handle it with tabular, but if there is a trick to make it work with nomencl package, that would be awesome.

I managed to span on two columns easily:

Code:

---

\begin{table*}[!t]
  \begin{framed}
    \printnomenclature
  \end{framed}
\end{table*}

---

But I still have no idea how to make nomenclature to print in two columns.