What is the relationship between wet bulb temperature and rain temperature?

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SUMMARY

The relationship between wet bulb temperature and rain temperature is critical for understanding heat transfer during rainfall. When the external dry bulb temperature (DBT) is 20°C with 50% relative humidity (RH), the liquid rain temperature can be approximated to the wet bulb temperature, although this is not definitive. Rain typically forms at higher altitudes where temperatures are lower, complicating the estimation of ground-level rain temperature. For accurate calculations, referencing established meteorological resources, such as those provided by The Weather Prediction, is essential.

PREREQUISITES
  • Understanding of dry bulb temperature (DBT) and relative humidity (RH)
  • Knowledge of wet bulb temperature calculations
  • Familiarity with heat transfer principles in meteorology
  • Access to meteorological data sources for climate analysis
NEXT STEPS
  • Research the calculation methods for wet bulb temperature using psychrometric charts
  • Explore the concept of "warm rain drops" and its implications on rain temperature
  • Study the impact of altitude on precipitation temperature and formation
  • Investigate heat transfer models during precipitation events
USEFUL FOR

Meteorologists, climate scientists, and engineers involved in environmental studies or heat transfer analysis during rainfall events will benefit from this discussion.

Libertiene
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If the external DBT is 20 deg C and it is 50% RH, then it rains, what temperature is the liquid rain?

I am trying to calculate the heat transfer from a surface when it is raining. I have a set of climate data which will give me external ambient DBT, RH and precipitation. So how can i predict the temperature of the rain water at ground level?

My assumption is that it would be approximately equal to the wet bulb temperature. But I have no idea if this is correct. If rain is formed high in the atmosphere where the temperature is lower how can this be estimated?

It is a bit strange that i can't find a straightforward answer to this question. I have spent ages goggling this and got nowhere. A reference that i can use as justification for an answer would be great.
 
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Yes but i am not sure how that answers the question. This means that the majority of conventional rain is the "WARM RAIN DROPS" category. This is rain that “is above the current surface temperature". The site gives a way of approximating the wet bulb temperature, but it does not lead me to believe this is also the rain temperature.
 

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