Moisture Ratio in Air: Why Do Tables Stop at 50°C?

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Moisture ratio tables for air typically stop at around 50°C due to their focus on "Earthly" weather conditions, as extreme temperatures above this are less relevant for most applications. The discussion raises the question of whether 50°C serves as a boundary for the moisture-holding capacity of air, with some suggesting that 100°C might be a more significant boundary at atmospheric pressure. There is curiosity about the lack of available data for temperatures between 50°C and 100°C, despite the abundance of information regarding water. A calculator referenced in the discussion aligns closely with existing dew point graphs, indicating that values can be interpolated up to 100°C. Overall, the conversation highlights a gap in readily accessible moisture ratio data for higher temperatures.
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Homework Statement
Why do moisture ratio tables related to temperature, humidity and dew point only go up to about 50 deg C?
Relevant Equations
N/A
Wondering why moisture ratio tables related to temperature and air only go up to roughly 50 C or so? is that temperature a "boundary" on the amount of water air can hold?
 
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Vector1962 said:
Problem Statement: Why do moisture ratio tables related to temperature, humidity and dew point only go up to about 50 deg C?
Relevant Equations: N/A

Wondering why moisture ratio tables related to temperature and air only go up to roughly 50 C or so? is that temperature a "boundary" on the amount of water air can hold?
My guess is that since humidity and dew points are weather related, the graphs and tables would only display "Earthly" weather values.
According to my googling, a place called Dallol Ethiopia is the hottest location in the world:
Record high: 49°C​
Average high: 46.7°C​

I'm not sure why anyone but scientists would want to know what the values are above 50°C.
Given the linearity of the graph at wiki regarding Dew Points, without even doing any maths, my guess is that 50°C is not a boundary.
Guessing that 100°C might be considered a boundary though, at atmospheric pressure.
 
I appreciate your reply. I don't really consider myself a scientist but rather more curious concerning the values between 50C and 100C. Seems like with the amount of information currently available regarding water that the tables and graphs would routinely go to 100C . Don't suppose you have any idea where to get one?... maybe a CRC chem book?
 
Vector1962 said:
I appreciate your reply. I don't really consider myself a scientist but rather more curious concerning the values between 50C and 100C. Seems like with the amount of information currently available regarding water that the tables and graphs would routinely go to 100C . Don't suppose you have any idea where to get one?... maybe a CRC chem book?
This calculator seems to give similar results as my interpolation/eyeballing of the wiki dew point graph, up to 100°C.
(Within 4.1% of each other from 20 to 100% RH)
 

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