Stanag 5069 -

Wind, temp, and density data across 30km of atmosphere. Without it, your 155mm round is just a very expensive guess.

Enter – NATO Standard for Meteorological Data for Technical Firing Support (MetCM) . stanag 5069

While the standard is mature, generating timely, localized met data on a dynamic battlefield remains a vulnerability. Relying on standardized (ballistic) weather or old data is a gamble most units cannot afford. Wind, temp, and density data across 30km of atmosphere

Here is why this 1970s-era standard is still critical for modern long-range precision. stanag 5069