Why do they take out H2O from air when they measure CO2 concentration?

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Why do they take out H2O from air when they measure CO2 concentration?30-04-2019 20:56
Tai Hai Chen ★★★★☆ (1041)	AFAIK, H2O is an indispensable part of air so if I were to measure CO2 concentration I would not take H2O out of air. https://www.esrl.noaa.gov/gmd/ccgg/about/co2_measurements.html
30-04-2019 21:57
Into the Night ★★★★★ (8172)	Tai Hai Chen wrote: AFAIK, H2O is an indispensable part of air so if I were to measure CO2 concentration I would not take H2O out of air. https://www.esrl.noaa.gov/gmd/ccgg/about/co2_measurements.html Then you are measuring water, not CO2. They both absorb infrared light of similar frequencies. The Parrot Killer
30-04-2019 23:01
James___ ★★★★☆ (1368)	Into the Night wrote: Tai Hai Chen wrote: AFAIK, H2O is an indispensable part of air so if I were to measure CO2 concentration I would not take H2O out of air. https://www.esrl.noaa.gov/gmd/ccgg/about/co2_measurements.html Then you are measuring water, not CO2. They both absorb infrared light of similar frequencies. https://www.youtube.com/watch?v=87eTZrF7hgg&feature=youtu.be&fbclid=IwAR3R_QfA7zlMIG1tXowCFD0keD1TJHSasz4xRwccQq9_DI9t_T4xhCYwnaA I "know" Andrei Cerbu and Andreea Munteanu. Andreea is singing and Andrei on guitar has black hair. And once again, non Americains we harmed in the making of this music. https://www.youtube.com/watch?v=Lj_wB7Taakw And for Deutsche, there is Sina Doering, aka Sina-Drums; https://www.youtube.com/watch?v=dMJiZxw6Ef4 or https://www.youtube.com/watch?v=IUQo7vm6f8w No Americans were harmed in the making of these music videos. In fact none of it was made in les Amériques. Il est vrais With Mauna Loa, it's possible that it's representative of the air coming from Los Angeles, California, USA. If so, it's only representative of that one air stream/flow. And for Deutsche, there's; https://www.youtube.com/watch?v=lp_6Ecu-XyM or with a Romanian and a Brit https://www.youtube.com/watch?v=xyF5A7BFnqw The first song features a Swedish lead singer with Spaniards. Edited on 30-04-2019 23:25
30-04-2019 23:21
Tai Hai Chen ★★★★☆ (1041)	Into the Night wrote: Tai Hai Chen wrote: AFAIK, H2O is an indispensable part of air so if I were to measure CO2 concentration I would not take H2O out of air. https://www.esrl.noaa.gov/gmd/ccgg/about/co2_measurements.html Then you are measuring water, not CO2. They both absorb infrared light of similar frequencies. H2O is part of air. That's like saying I take out O2 to measure CO2. That is WRONG.

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