<p>As an alternative, we commonly use a relationship of pressure or hgt between the values at the surface and a given level. This <a href="https://gradsaddict.blogspot.com/2013/05/tutorial-vertical-cross-section-with.html" rel="nofollow noreferrer">link</a> might be helpful.</p>

CC BY-SA 4.0
2022-12-02T00:44:26.373Z
This feels a lot like a link only answer.  Can you extract the relevant info from the link and place it here?
GrapefruitIsAwesome
CC BY-SA 4.0
2022-11-26T04:55:18.710Z
2022-11-26T04:55:18.710Z
Manuel Figueroa
<p>I am using GRADS (<a href="https://en.wikipedia.org/wiki/GrADS" rel="nofollow noreferrer">1</a>, <a href="http://cola.gmu.edu/grads/gadoc/gadoc.php" rel="nofollow noreferrer">2</a>, <a href="https://help.ceda.ac.uk/article/292-grads" rel="nofollow noreferrer">3</a>) to plot ERA reanalysis relative humidity profile for latitudinal average of 15N to 37N, and along the longitude from 40E to 130E. The orography is quite obvious and thus some pressure levels like up to 700 hPa are not applicable in some regions with high altitude. </p>

<p>I need to know how to plot orography in the grads, thus the orography can be masked or shown in gray color, the image for reference is shown below. Thanks</p>

<p><a href="https://i.sstatic.net/eJ2Ak.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/eJ2Ak.jpg" alt="enter image description here"></a></p>

<meteorology><thermodynamics><topography>
How to plot orography for vertical profile of a certain variable along pressure levels in GRADS
khan
# How to plot orography for vertical profile of a certain variable along pressure levels in GRADS

(Asked by: username_0 on 2019-01-30)

I am using GRADS ([1](https://en.wikipedia.org/wiki/GrADS), [2](http://cola.gmu.edu/grads/gadoc/gadoc.php), [3](https://help.ceda.ac.uk/article/292-grads)) to plot ERA reanalysis relative humidity profile for latitudinal average of 15N to 37N, and along the longitude from 40E to 130E. The orography is quite obvious and thus some pressure levels like up to 700 hPa are not applicable in some regions with high altitude.

I need to know how to plot orography in the grads, thus the orography can be masked or shown in gray color, the image for reference is shown below. Thanks

[![enter image description here](https://i.sstatic.net/eJ2Ak.jpg)](https://i.sstatic.net/eJ2Ak.jpg)

**Tags:** meteorology, thermodynamics, topography


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## 1 answers

### Answer by username_1 on 2022-11-26. Score: -1

As an alternative, we commonly use a relationship of pressure or hgt between the values at the surface and a given level. This [link](https://gradsaddict.blogspot.com/2013/05/tutorial-vertical-cross-section-with.html) might be helpful.

> **Comments:**
> **username_2**: This feels a lot like a link only answer.  Can you extract the relevant info from the link and place it here?  

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