tag:blogger.com,1999:blog-6168620747792092240.post2980215454191353788..comments2024-03-27T15:09:59.039-06:00Comments on Wasatch Weather Weenies: DIY Forecast Tools, Part IJim Shttp://www.blogger.com/profile/15799757451626876963noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-6168620747792092240.post-91038681557916653072015-11-29T14:22:17.418-07:002015-11-29T14:22:17.418-07:00Thanks much Jim! What I find most useful is your ...Thanks much Jim! What I find most useful is your own experience and insights into the pros & cons of the various models. I knew that resolution is a problem for us in the Wasatch, but without your explanation I couldn't figure out why the NAM4k is almost always optimistically off (assuming one wants snow..), and the 12K that one would expect to average out the mtn range effects is often more reflective of actual snowfall.<br /><br />Again, very helpful to us snow hunters/hopers. Best regards.Anonymoushttps://www.blogger.com/profile/03646425038285404336noreply@blogger.comtag:blogger.com,1999:blog-6168620747792092240.post-25979816827866220742015-11-13T11:26:13.974-07:002015-11-13T11:26:13.974-07:00Great news about the NCAR 3-km Ensemble that is co...Great news about the NCAR 3-km Ensemble that is coming! I have yet to find anything that can forecast local thermal winds in Utah. I really wish the NWS or the U of U would run a 2km WRF-GFS.Scot Chipmanhttps://www.blogger.com/profile/17650190017905455606noreply@blogger.comtag:blogger.com,1999:blog-6168620747792092240.post-18560055988317052192015-11-13T10:19:11.672-07:002015-11-13T10:19:11.672-07:00Numerical models can't solve the equations gov...Numerical models can't solve the equations governing the atmosphere directly. They need to use approximations, sometimes referred to as numerics. The easiest to conceptualize is a grid point model where calculations are done at grid points that spaced some distance apart. The smaller that distance, the higher the resolution of the model, meaning it can resolve smaller scale atmospheric features. <br /><br />Native resolution means that you are looking at data on the model grid. Close to native means you are looking at a grid that is very close to the native grid. <br /><br />The GFS is a bit more complicated because it uses a spectral model and not all calculations are done on a grid. In the interest of time, "close to native resolution" is a way of saying you're getting as good as you can get.<br /><br />Jim<br />Jim Shttps://www.blogger.com/profile/15799757451626876963noreply@blogger.comtag:blogger.com,1999:blog-6168620747792092240.post-11773802421729334942015-11-13T10:10:16.629-07:002015-11-13T10:10:16.629-07:00really interesting stuff! I am very much an amateu...really interesting stuff! I am very much an amateur when it comes to meteorology and find it fascinating and entertaining to try to predict snowfall. <br /><br />Could you explain what the resolution means for the different models. I have a loose understanding I think, but when you say, "which is as close to native resolution as you can get." I don't know what that means, which makes me realize that maybe I don't understand it as well as I think. Thanks!Aaronhttps://www.blogger.com/profile/13670492511120125182noreply@blogger.comtag:blogger.com,1999:blog-6168620747792092240.post-43925992965069316272015-11-12T13:25:59.069-07:002015-11-12T13:25:59.069-07:00I've been hoping you would make a post like th...I've been hoping you would make a post like this for a long time now, thank you! Anonymousnoreply@blogger.com