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Open-Meteo on AWS Open Data
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Wind Data is not aviable for ERA5-Land #4

Closed johhartm closed 5 months ago

johhartm commented 5 months ago

Hi there, I stumbled upon this very intersting servicethat could be really helpful for me. However, I need the wind data with 9km grid resolution that is only aviable through ERA5-Land. Would it be possible to also provide this data?

patrick-zippenfenig commented 5 months ago

Hi, wind data from ERA5-Land in 0.1° resolution is equivalent to interpolated wind data from ERA5 in 0.25°. This is explained in the ERA5-Land documentation that atmospheric parameter are used as forcing.

The Open-Meteo historical weather api also integrates ECMWF IFS at 9 km resolution with data from 2017 onwards, but this data is not yet available through this open-data distribution

johhartm commented 5 months ago

Thank you so much for this information and pointing to the historical weather api. However, I need raster data, so this is not really a solution to me. However, I found a alternative solution to get the data (by modifying the alite package to not make a single request for every month when only requesting smaller rasters)

johhartm commented 5 months ago

@patrick-zippenfenig Unfortionally this solution proved to be less stable than anticipated... It would be really usefull if you could point out how the spatial interpolation is done since I only can find information on a package that has been developed for this reason but cant find any information on how to download and use it

patrick-zippenfenig commented 5 months ago

I am not doing any interpolation. The API selects a nearby grib-cell (weighted by matching terrain height and avoids grid-cell on sea) and return data. What are you trying to do with this data?