Mapping Gases Over a City: Theoretical Experiment

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Discussion Overview

The discussion revolves around methods for mapping gases over a city as part of a theoretical experiment. Participants explore various techniques and technologies that could be employed for this purpose, focusing on both detection and localization of gases.

Discussion Character

  • Exploratory, Technical explanation

Main Points Raised

  • One participant suggests using a gas detector in conjunction with GPS for mapping gases.
  • Another participant inquires about the parts per million (ppm) readings achievable with such detectors and seeks clarification on their operational principles.
  • A different participant proposes the combination of gas detectors with remote sensing and GPS systems as a viable approach.
  • It is mentioned that existing methods include using a mass spectrometer with an air sampler and GPS, highlighting that optical measurements may also be applicable for gases with strong absorbances.

Areas of Agreement / Disagreement

Participants present multiple approaches and technologies for mapping gases, indicating a range of opinions and methods without a clear consensus on the best solution.

Contextual Notes

Some assumptions about the effectiveness and feasibility of the proposed methods remain unaddressed, and the discussion does not resolve the specifics of gas detection technology or its limitations.

iwant2beoz
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I am looking for a way to map gases over a city, what are some ways I could do that? This is a theoretical experiment so cost is not an issue. Thanks in advance
 
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What sort ppm can I get something like that? And also how does said gas detector work?
 
I am not sure bt i think you can use gas detector with ppm reading you can also using remote sensing and gps system.
 
iwant2beoz said:
I am looking for a way to map gases over a city, what are some ways I could do that? This is a theoretical experiment so cost is not an issue. Thanks in advance

People do this already. A mass spectrometer with an air sampler (essentially a small leak of air into the spectrometer) combined with GPS. Some optical measurements will work with gases with strong absorbances, but mass spec. is probably the most universal.
 

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