Can Extremely Low Wind Speeds Impact Weather Predictions and Climate Models?

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SUMMARY

Extremely low wind speeds, particularly in the range of 0 to 10 centimeters per second, significantly impact weather predictions and climate models. Observations indicate that when wind speeds drop below 7 knots, the wind direction becomes variable, complicating atmospheric assessments. The discussion highlights the importance of low-velocity air parcels, especially in humid environments such as over lakes, where they are more likely to saturate. Understanding these dynamics is crucial for improving the accuracy of meteorological forecasts and climate modeling.

PREREQUISITES
  • Understanding of anemometer functionality and measurement techniques
  • Familiarity with atmospheric dynamics and wind speed classifications
  • Knowledge of humidity saturation processes in meteorology
  • Basic principles of climate modeling and prediction accuracy
NEXT STEPS
  • Research the effects of low wind speeds on local weather patterns
  • Explore the role of humidity in air parcel behavior over water bodies
  • Study the impact of variable wind directions on climate models
  • Learn about advanced anemometer technologies for measuring low wind speeds
USEFUL FOR

Meteorologists, climate scientists, environmental researchers, and anyone involved in weather prediction and climate modeling will benefit from this discussion.

tasp77
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How slow can wind blow on Earth (and elsewhere) before local obstructions (trees, hills, buildings) essentially stop it?

How low a wind velocity can be measured, and does the wind velocity spectrum extend to zero?

I was wondering about wind speeds in the 0 to 10 centimeter/second range. I was recently watching a small trash fire and I noticed the smoke plume was not quite vertical, but a nearby weather station anemometer was motionless. Are very low wind speeds (not stationary) important to weather predictions and climate models? (I'm thinking a very low velocity parcel of air would be more likely to saturate in humidity over a lake as opposed to wind moving over the lake at a higher speed).
 
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