Hello,
I hope you have a good time.
I work on a research project about temperature indices. Due to the high number of indices, I only work on tables and maps on an annual time scale. In other words, I do most of my analysis for the annual time scale. Now I want to draw a box plot for studied indices. It should be noted that I have access to daily data. Do you think, for example, I should plot the average air temperature box plot using daily data or annual data?
Also in the case of precipitation, is the box plot better drawn from daily data or annual data?
I am waiting for your answer. Also, it would be great if you could introduce some reference.
Thanks in advance for your answer.
Amin Sadeqi, I think it depends focus of your study. If you are looking for a trend in the short term scale, for example, 5 through 10 years I would suggest daily time scale would be better representation of climate, both for the temperature and precipitation data. But if your objective is to observe the long term climate effect then, annual data with box and whsiker would be okay. All depends on the scale of the analysis. Even bar charts with error lines (max and min from average) would represent annual data if it conveys the message that you would like to make. I hope it helps!
Dear Amin Sadeqi
I found the good reference for your problems:
Predictive skill of climate indices compared to mean quantities in seasonal forecasts
Jonas Bhend,* Irina Mahlstein and Mark A. Liniger
Thank you.
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