![NATO STANAGS and S4](https://upload.wikimedia.org/wikipedia/commons/7/71/NATO_STANAGS_and_S4.png)
STANAG 4140 - Adoption of a Standard Target Acquisition Meteorological Message (METTA) is a
NATO
The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two No ...
Standardization Agreement to provide meteorological information such as
refractive index
In optics, the refractive index (or refraction index) of an optical medium is a dimensionless number that gives the indication of the light bending ability of that medium.
The refractive index determines how much the path of light is bent, or ...
,
temperature
Temperature is a physical quantity that expresses quantitatively the perceptions of hotness and coldness. Temperature is measured with a thermometer.
Thermometers are calibrated in various temperature scales that historically have relied o ...
,
pressure
Pressure (symbol: ''p'' or ''P'') is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled ''gage'' pressure)The preferred spelling varies by country and e ...
and cloud cover for remotely piloted vehicles, drones, weapon locating radars and
sound ranging
In land warfare, artillery sound ranging is a method of determining the coordinates of a hostile battery using data derived from the sound of its guns (or mortar or rockets) firing. The same methods can also be used to direct artillery fire at a ...
systems.
The custodian of this STANAG is the MILMET panel, formerly BMWG, within NATO Headquarters. The most recent promulgated copy is Edition 2, dated 28 May 2001.
Edition 2 was cancelled in May 2019 and is superseded by STANAG 6015.
STANAG 4140 relates to other
Standardization Agreements in the areas of ballistics and meteorology, as shown in the attached pictorial representation (also shown in slide 4 of the following presentation)
Article title
References
{{Reflist
External links
Vaisala DigiCORA Sounding System MW31 for Portable Applications
Groundstation GS-B
Digitest Elektronik MT1000
4140