I have surface ozone concentration data for few months and I want to determine if temperature remains constant what would be the concentration of ozone? How can I do this? Please support with statistical equations, literatures and calculations and however you can.
Thank you very much.
O3 concentration dependent of solar (UV) radiation. Hence correlate your results with radiation / changes is solar radiation.
I am afraid you cannot do this without proper modeling studies, because in the nature it is virtually impossible to extract the ozone sensitivity to one particular parameter. As you know temperature is not independent and closely connected to many other factors like clouds (for example) which also influence ozone. I guess you can apply chemical-transport model driven by observed meteorological fields and run it with real and constant temperatures. It will give you the sensitivity of the ozone to one particular parameter. There are several models available for this kind of job.
Sudhir Sir thank you very much for your suggestion. But I am not looking for a correlation with UV radiation. In my DAC a question has been raised that if temperature is kept constant, then what would be the variation in ozone concentration? They want me to make a mathematical or statistical model kind of thing.
Thank you Dr. Rozanov for your suggestions. Can we have any statistical equation for the same considering gas laws?
I would say it is virtually impossible, because temperature is not independent parameter. I am pretty sure that CTM is necessary.
Hello Parth - you can convert your ozone concentrations into standard, dry air conditions (e.g., 760 mmHg, 25 C) using ideal gas law and the following expression of it:
Cstd = C(measured)/[(pm/760)*(298/Tm)*(1/(1-rh))], where:
pm = pressure at the sampling location, Tm = temperature at the sampling location, and rh is the relative humidity at the sampling location. Likewise you can make conversions from mass/volume units to mixing ratios and vice-versa using formulas derived from the ideal gas law that take into consideration molecular weight, Tm, pm, and rh.
I hope this helps,
Jacek
Thank you Professor Koziel for your suggestions. This will help me a lot. Can you please help me with how this equation has been derived using ideal gas laws? Any references? Counting on your help.
Kind regards,
Parth
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