From several early research works, I have noticed the negative correlation between temperature and PM2.5. However, in my recent study using Wavelet Coherence (WTC), I found a positive correlation in high-spectrum regions with a delay of approximately one month. What may be the reason behind this? Should we consider the influence of the other meteorological factors?
Narasim Ramesh
Interesting topic ..Is there an assumption of linearity? Perhaps an SEM analysis might help.
Cheers
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Ashok Silwal
Thank you Sujan Prasad Gautam
and Narasim Ramesh for your kind response. I decided to use SEM analysis as well. Let's see what it could bring.
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Abdulmuhsin S. Shihab
In Areas where it rains in summer, the relation is positive, while in Areas it rains in winter, the relation is negative.
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