<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi,<div class="">I got an error while converting WRF output in netcdf format to ARL format which is the only format required by HYSPLIT. <b class=""> The error message I got are exactly the same as the one in a previous WRF forum discussion (</b> <a href="http://forum.wrfforum.com/viewtopic.php?f=12&t=3089&sid=0558ce573a50cf68c1cda15ec8cc8d20" class="">http://forum.wrfforum.com/viewtopic.php?f=12&t=3089&sid=0558ce573a50cf68c1cda15ec8cc8d20</a> <b class="">).</b></div><div class=""><br class=""></div><div class="">I am using the most recent version of WRF-ARW (3.8.1). I followed the solution in the link, But I did not find the line which supposed to be modified in the Registry.EM file under directory /WRFV3/Registry/. The line I am looking for is:</div><div class=""><span class="" style="color: rgb(51, 51, 51); font-family: 'Lucida Grande', 'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif; background-color: rgb(235, 234, 221);">EM:state real ZNT ij misc 1 - i3rh "ZNT" "TIME-VARYING ROUGHNESS LENGTH" "m" </span><br class="" style="margin: 0px; padding: 0px; color: rgb(51, 51, 51); font-family: 'Lucida Grande', 'Trebuchet MS', Verdana, Helvetica, Arial, sans-serif;"></div><div class=""><br class=""></div><div class="">Could someone help me on the following two questions:</div><div class="">1) Is the answer in the link still a proper solution even for the new version of WRF? </div><div class="">2) If yes to 1), where could I find the line that I am supposed to modify? In which file and under which directory?</div><div class=""><br class=""></div><div class="">Thank you very much!</div><div class=""><br class=""></div><div class="">Zhixuan Cao</div></body></html>