Comparison between model results obtained three or more years later

Topics about the HYSPLIT trajectory model.
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maiacalvello2
Posts: 5
Joined: February 10th, 2020, 10:31 am
Registered HYSPLIT User: No

Comparison between model results obtained three or more years later

Post by maiacalvello2 »

I run Hysplit trajectoy model in 2017 using GDAS 1 meteorological data for a location in South Italy for some days of summer 2012 and summer 2015.
I recalculated the same trajectories (same location and same days) using GDAS 1 data few days ago but I obtained different results especially for mixing layer height. What could be the reason? An update in meteorological dataset or model parameters?
barbara.stunder
Posts: 416
Joined: November 9th, 2012, 4:23 pm
Registered HYSPLIT User: Yes

Re: Comparison between model results obtained three or more years later

Post by barbara.stunder »

The mixed layer depth is in the meteorology file, and the archives have not been changed. How much different are the trajectories?
maiacalvello2
Posts: 5
Joined: February 10th, 2020, 10:31 am
Registered HYSPLIT User: No

Re: Comparison between model results obtained three or more years later

Post by maiacalvello2 »

As for the Mixed layer depth, in most cases I found very little differences, even if for few points the differences reached 35%.
Anyway your answer was useful because I mainly wanted to be sure that the archives were the same
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