Month: February 2019

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Where to apply AERSURFACE?

Where to apply AERSURFACE?

My nephew (he’s four years old) often asks me “who decided that…” certain things are the way they are. Most of the time, I have no clue, so I respond “I don’t know. Go ask your dad.” But once in a while, I do know the answer and it has to do with some obscure…

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Temporal Representativeness – FREE WEBINAR

Temporal Representativeness – FREE WEBINAR

NaviKnow is presenting a FREE Live webinar mini-course on Temporal Representativeness, February 27th at noon CST. Dispersion modeling requires lots of input data: emission source data, meteorological data, and monitoring data. In order for the modeling results to be valid, it only make sense that all the data that go into the simulation all occurred…

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Which Is It? Urban or Rural?

Which Is It? Urban or Rural?

Several years ago, I was waiting at a traffic light. While I was waiting started counting the traffic signs at the intersection. By the time the traffic light turned green and I had to shift my attention to driving, I counted 50, and that wasn’t all of them. I guess somebody in government has a…

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Where to Apply AERSURFACE? – FREE WEBINAR

Where to Apply AERSURFACE? – FREE WEBINAR

NaviKnow is presenting a FREE Live webinar mini-course on Where to Apply AERSURFACE?, February 20th at noon CST. The Guideline on Air Quality Models (40 CFR 51 Appendix W) states in Appendix A “The values for surface roughness, Bowen ratio, and albedo should reflect the surface characteristics in the vicinity of the meteorological tower and…

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