HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Posted: **July 9th, 2020, 10:38 am**

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?

Posted: **July 13th, 2020, 12:00 pm**

The mixed layer depth is in the meteorology file, and the archives have not been changed. How much different are the trajectories?

Posted: **July 14th, 2020, 4:25 am**

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

HYSPLIT Forum: hysplitbbs.arl.noaa.gov

Comparison between model results obtained three or more years later

Comparison between model results obtained three or more years later

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

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