Scheduled Downtime
On Friday 21 April 2023 @ 5pm MT, this website will be down for maintenance and expected to return online the morning of 24 April 2023 at the latest

How much larger than the domain does input data need to be ?


New member

I'm running a triple nested WRF from GFS data with 9, 3 and 1km resolutions. All domains are a liitle bit over 100 grid squares. How much larger than the outer domain should the GFS data be for best results?

Are you asking about domain size (i.e., number of grid cells), or grid-spacing (resolution)? If the former, you should just download the global GFS data - subsets of data can cause unnecessary issues. If the later, then you want d01 to be a grid ratio of about 3:1 or 5:1.