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

Get eta levels from model heights

This post was from a previous version of the WRF&MPAS-A Support Forum. New replies have been disabled and if you have follow up questions related to this post, then please start a new thread from the forum home page.

Y

yhwong

New member
Hello,

I am wondering if there is a way for me to get the eta_levels (in namelist.input) when the model heights (i.e. vertical grid) are given? From the WRF ARW technical guide it appears that the formula for eta level is (p - p_top) / (p_surface - p_top). However, the only data I have been given are the model heights (e.g. level 1 = 37m; level 2 = 112m; ... level 74 = 33,000m). Is there a way to convert these model heights into eta levels?

Thank you for your help!
 
Are you talking of some ideal cases? If so, then it makes no sense to get ta levels. This is because in ideal cases, PSFC is usually not available.
 
Hi,

I want to make sure that it doesn't make sense to set eta_levels in namelist.input for ideal cases (such as em_tropical_cyclone)?

Best,

Wenli
 
You must log in or register to reply here.
Top