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

Variance of Subgrid Scale Orography reference


New member

I'm trying to track what digital elevation model is used to calculate the static field "VAR_SSO" of the WPS v3 static fields (WRF Download).

Based on this post in the forum (References for geogrid static data) I guess it is USGS GTOPO30 but I just wanted to be sure that the topography reference include the VAR_SSO field.

Thank you in advance,

VARSSO is independently calculated based on topography data of different resolution. Currently WPS Geostatic provides several varsso datasets of different resolutions, i.e., varsso_10m, varsso_2m, varsso_5m etc. Note that topography reference doesn't include varsso data.

could you please provide reference for the original topographic data on which the calculation of VAR_SSO is based? In particular I am interested in what the spatial resolution of the source topographic dataset is.

Thank you