How does hysplit do spatial and temporal interpolation?

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hlbutterfly
Posts: 7
Joined: September 30th, 2020, 10:56 am
Registered HYSPLIT User: Yes

How does hysplit do spatial and temporal interpolation?

Post by hlbutterfly »

I'd like to get simulated concentration at one-minute resolution and 100m x 100m spatial resolution. My input meteorological data is HRRR, which is hourly and 3km data. I can specify the grid spacing to be 0.01 degree (roughly 100 m) and sampling interval to 1 min in my Hysplit Setup. But I want to know how does Hysplit to the spatial and temporal interpolation. Does Hysplit do some kind of linear interpolation from the original hourly and 3km data into min-by-min and 100m x 100m data? Or does Hysplit not doing any interpolation for the meteorological data but do linear interpolation on the simulated results? Is there more information with respect to this?

Thank you very much!
barbara.stunder
Posts: 451
Joined: November 9th, 2012, 4:23 pm
Registered HYSPLIT User: Yes

Re: How does hysplit do spatial and temporal interpolation?

Post by barbara.stunder »

The meteorology is linearly interpolated in both space and time.
You can get more information at https://www.arl.noaa.gov/documents/reports/arl-224.pdf
and the online tutorial at https://www.ready.noaa.gov/HYSPLIT_Tutorials.php
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