Using cdo to detect dust events
Added by Zeinab Salah over 5 years ago
Dear All,
Do anyone know how to detect dust events in the past or future projections as an index?
I have output of dust model (concentration, optical depth, dust load), can I use the same concept of precipitation indices?
Thank you in advance
Zeinab
Replies (3)
RE: Using cdo to detect dust events - Added by Ralf Mueller over 5 years ago
hi!
I guess it depends on what is the definition of an event
cheers
ralf
RE: Using cdo to detect dust events - Added by Zeinab Salah over 5 years ago
Thank you Ralf.
I need to know the number dust storms during the incoming 50 years based on IPCC scenarios, and their intensity.
Can I use the percentile to indicate the intensity of the storm?
Best regards,
Zeinab
RE: Using cdo to detect dust events - Added by Ralf Mueller over 5 years ago
I am by no means an expert for dust storms - please keep that in mind ;-)
First: you have to make clear: what is the intensity of a dust storm windspeed, size, duration, dust concentration (no idea if something like that even exists) whatever. you are the expert
Second: compute this quantity from your data if possible. or if it's just a single variable you don't need to compute anything. But keep in mind: something strong (like strong rain) is probably not supposed to be a big event if it lasts only 2 minutes. duration is crucial here i think
Third: identify all events and compute their strength
From there it makes sense to me to work with percentiles. Or maybe you just sort them and take the strongest 10%
hth
ralf