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12/30/2018 5:25 am  #1


Reanalysis Grib

Hello,

does anyone know where I can download reanalysis grib files?
Best would be for free.
I need the area of the north Atlantic. I want to make routings in the past to plan an Transatlantic Trip.

Thanks

 

1/09/2019 9:09 am  #2


Re: Reanalysis Grib

Hi,

https://apps.ecmwf.int/datasets/data/interim-full-daily/levtype=sfc/

You will have to set up an account. Cumbersome but it works.

 

1/11/2019 9:58 am  #3


Re: Reanalysis Grib

 the most efficient way to do it is to run python scripts that request the exact date range, variables, and geographic range that you want.

I have been doing this for quite a while. It works really well - a simple 15 or 20 line script is submitted to their server, and you get, for example; reanalysis for the entire atlantic ocean for a period of 3 months, 4 reanalysies per day - 6hrs apart, wind speed and direction, MSLP, temp.., all delivered in one grib file to your computer. it typically takes anywhere from a few min to an hour for their server to process the request - depending on how heavy the load on the server is.

However.., the EC is now in the process changing the access to the reanalysis data.., and while (I believe) scripts will still work.., the process will be different and the scripts will have to be re-written.

This change is occurring within the next few days.., and after years of using the old system, I am just trying to figure out the new system.

Last edited by us7070 (1/11/2019 9:59 am)

 

1/18/2019 10:55 am  #4


Re: Reanalysis Grib

just wanted to update my comment above about the reanalysis...
i have been switching to the new reanalysis data access method- python scripts still work.., and my first impression is that it might be faster; all my requests are processed within minutes, rather than some taking an hour or so, as was happening in the past.

 

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