(no title)
huhnmonster | 5 years ago
And does rain rate mean the frequency of distinct rain events over hours/days or the intensity of a single rainfall?
Just curious, maybe you can shed some light on this
huhnmonster | 5 years ago
And does rain rate mean the frequency of distinct rain events over hours/days or the intensity of a single rainfall?
Just curious, maybe you can shed some light on this
sathackr|5 years ago
It manifests in both cost and capability. For the same throughput you generally need more expensive equipment to obtain the same level of reliability.
Where with the previous calculations it may cost X dollars for equipment, using the new calculations you may need to use a larger antenna or a more power transmitter, costing sometimes 2-3x, if it's even possible at all. Many times the link is just no longer viable at the required reliability.
Rain rates are typically measured in mm/hr but it's an instantaneous rate, but what I've observed in 2020 is instantaneous peak rates easily 50% higher (indicated by signal attenuation levels) than 2019/2018. I'm not aware of any standard meteorological way to measure this as it seems most measurements are done as cumulative over minutes/hours/days, when the effects on microwave signals are in the seconds and minute scales.
Certainly can't establish as causal relationship with climate change, especially since my observations are on the scale of just a few years, but it shows the danger in simply relying on low resolution historical 10/50/100yr data for infrastructure design.