<p>I was just wondering how much the vapour pressure has changed due to climate change. Because with changing temperatures, the vapour pressure also changes; this is described by the Clausius-Clapeyron equation. Does anyone have a suitable paper on how this has changed in the Northern hemisphere?</p>

CC BY-SA 4.0
2022-07-21T15:34:34.800Z
Do you mean relative humidity ?
blacksmith37
CC BY-SA 4.0
2022-07-21T19:54:32.990Z
Relative humidity is going to be significantly different than vapor pressure as a question... relative humidity changes based on air temperature without any change in actual underlying atmospheric moisture amounts.
JeopardyTempest
CC BY-SA 4.0
2022-07-21T19:56:04.977Z
Does this answer your question? [Could Global Climate Change increase the average moisture in the air?](https://earthscience.stackexchange.com/questions/9238/could-global-climate-change-increase-the-average-moisture-in-the-air)
JeopardyTempest
CC BY-SA 4.0
2022-07-22T09:11:46.180Z
I don't think it's a duplicate. The linked question asks about potential changes *in the future*, thus an answer would rely on models, while this question asks about changes *in the (recent) past*, thus an answer would rely on actual measures.
Jean-Marie Prival
CC BY-SA 4.0
2022-08-02T19:15:16.270Z
@Jean-MariePrival good point
JeopardyTempest
CC BY-SA 4.0
2022-11-16T04:07:27.813Z
You might find the [global desertification](https://ddebernardy.substack.com/p/global-desertification) chapter of my book interesting. It discusses water vapor and where the recent increase (see NASA data) might be coming from.
Denis de Bernardy
<climate-change><climate><water><water-vapour>
Change in vapour pressure due to climate change
Weiss
# Change in vapour pressure due to climate change

(Asked by: username_0 on 2022-07-21)

I was just wondering how much the vapour pressure has changed due to climate change. Because with changing temperatures, the vapour pressure also changes; this is described by the Clausius-Clapeyron equation. Does anyone have a suitable paper on how this has changed in the Northern hemisphere?

**Tags:** climate-change, climate, water, water-vapour

> **Comments:**
> **username_1**: Do you mean relative humidity ?  
> **username_2**: Relative humidity is going to be significantly different than vapor pressure as a question... relative humidity changes based on air temperature without any change in actual underlying atmospheric moisture amounts.  
> **username_2**: Does this answer your question? [Could Global Climate Change increase the average moisture in the air?](https://earthscience.stackexchange.com/questions/9238/could-global-climate-change-increase-the-average-moisture-in-the-air)  
> **username_3**: I don't think it's a duplicate. The linked question asks about potential changes *in the future*, thus an answer would rely on models, while this question asks about changes *in the (recent) past*, thus an answer would rely on actual measures.  
> **username_2**: @username_3 good point  
> **username_4**: You might find the [global desertification](https://ddebernardy.substack.com/p/global-desertification) chapter of my book interesting. It discusses water vapor and where the recent increase (see NASA data) might be coming from.  

---

## 0 answers

