@vicb Hi, thank you for reporting! It seems that the data is not divided by the gravitational constant. We will fix it.

@TechEdd_YT Hi, Windy does not have any future radar.

@Gkikas-LGPZ Hi, thank you for reporting the bug, we will fix it.

@Gallifrey Should be fixed now. We changed our download stream from FTP to HTTPS and data is back again. Thank you for reporting!

Ok, end of survey. I found out, that we can reach that site from many servers around the world, including our production servers. Probably only our Prague office has the problem. Closing this topic.

@siim Of course I mean https - corrected in original post. So you can access it from Estonia...ok, thank you!

Quick Survey:

1. Are you able to access https://www.nccs.nasa.gov ?
2. What is your locality?

Explanation: It seems to me that aforementioned server is accessible only from USA. It should provide the new access to NASA chemical data, which currently unavailable at Windy. Related issue: https://community.windy.com/topic/8030/somthing-wrong-with-co2-and-so2

@Gkikas-LGPZ Thank you for investigation. Yes, it seems that the 250hPa layer is missing in sounding. I will look at it.

@krisholub Yes, it is just linear interpolation. We are thinking of adding more levels for sounding only, because of inversions, but unfortunately it has very low priority now.

@krisholub Hi, it is quite expensive for us to add new levels, because each level contain a few parameters and we also try to have same levels for all models. So adding 750 and 650 means much more data. We would add it only if there was bigger demand for it from more users.