Hello
I am looking for monthly accumulated TRMM rainfall. TRMM 3B43 is only providing mean monthly rain rates (mm/h), is there any other product which provides monthly accumulated rainfall? or I have to do it by processing TMPA 3B42 product?
Dear Asid Ur Rehman you can download the daily rainfall data and process it by yourself in any GIS software.
What if I convert 3B43 mean monthly rates into total monthly precipitation?
it will be better if you multiply average rainfall data and no. of days. it will provide you accumulated rainfall of this month because. total rainfall of a month is divided by number of days to get average rainfall of this month
Sasanka Ghosh
Thanks for suggestion. As per documentation 3B43 gives mean hourly rain rates (mm/h) at month scale. I think I will need to multiply each value with 24(hours) and then with number of days in that specific month.
Dear Rehman, I think you are right. Have you done analysis in excel in order to validate this with rain gauge value? if yes, can you explain?
Hi Asid, your approach is correct.
"Because the total days in each month are different, mm/hr is used for easy comparison. Since the 3B43 product is a monthly average, you could simply do the conversion by multiplying the hourly rain rate with the total hours in that month."
https://daac.gsfc.nasa.gov/information/faqs?title=How%20can%20I%20convert%20mm%2Fhr%20in%20TRMM%203B43%20to%20mm%2Fmonth%3F
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