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<font face="Times" style="font-size: 14px;">Dear all,</font>
<div><font face="Times" style="font-size: 14px;"><br>
</font></div>
<div><font face="Times" style="font-size: 14px;">I am wondering if it is possible to use ncl function ‘<span style="line-height: 12pt;">dim_spi_n</span><span style="line-height: 16px;">’</span><span style="line-height: 12pt;"> to calculate SPEI. I have my own </span><span style="line-height: 16px;">precipitation</span><span style="line-height: 12pt;"> and
potential evapotranspiration datasets. The only concern is the distribution function. It seems that </span></font><span style="font-family: Times; font-size: 14px; line-height: 16px;">dim_spi_n</span><span style="font-size: 14px; font-family: Times; line-height: 12pt;"> only
supports Gamma and </span><span style="font-size: 14px; font-family: Times; background-color: rgb(255, 255, 255);">Pearson type III distribution. However, the log-logistic distribution is widely recommended for SPEI calculation.</span></div>
<div><font face="Times"><span style="background-color: rgb(255, 255, 255); font-size: 14px;"><br>
</span></font></div>
<div><font face="Times"><span style="background-color: rgb(255, 255, 255);"><span style="font-size: 14px;">Could you please let me know if there are any possibilities to use </span></span><span style="font-size: 14px; background-color: rgb(255, 255, 255);">log-logistic distribution
or other alternative solutions? Many thanks indeed!</span></font></div>
<div><font face="Times"><span style="background-color: rgb(255, 255, 255); font-size: 14px;"><br>
</span></font></div>
<div><font face="Times"><span style="background-color: rgb(255, 255, 255); font-size: 14px;">Best regards,</span></font></div>
<font face="Times"><span style="font-size: 14px;">Jian</span></font><br>
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