<p>The tropical circulation paper by <a href="https://iri.columbia.edu/~blyon/REFERENCES/P59.pdf" rel="nofollow noreferrer">Gill (1980)</a> approximates vertical velocity as the sum of pressure and diabatic heating terms (equation 2.5 at page 449).</p>

<p>Since the pressure is already a function of Q, what's the need of writing Q explicitly in this expression? Doesn't it double count p?</p>

CC BY-SA 4.0
2019-06-17T09:49:06.907Z
Are you talking about the equation containing vertical velocity and pressure perturbation?
Agni
CC BY-SA 4.0
2019-06-18T09:27:47.027Z
I am surprised! Doesn't the amount of diabatic heating in clouds also affect the ambient pressure? The case has to be similar with radiation as well?
Agni
<meteorology>
Presence of Diabatic heating term in the continuity equation
Agni
# Presence of Diabatic heating term in the continuity equation

(Asked by: username_0 on 2019-06-17)

The tropical circulation paper by [Gill (1980)](https://iri.columbia.edu/~blyon/REFERENCES/P59.pdf) approximates vertical velocity as the sum of pressure and diabatic heating terms (equation 2.5 at page 449).

Since the pressure is already a function of Q, what's the need of writing Q explicitly in this expression? Doesn't it double count p?

**Tags:** meteorology

> **Comments:**
> **username_0**: Are you talking about the equation containing vertical velocity and pressure perturbation?  
> **username_0**: I am surprised! Doesn't the amount of diabatic heating in clouds also affect the ambient pressure? The case has to be similar with radiation as well?  

---

## 0 answers

