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What specifically is the minimum equipment needed to generate a computerized METAR with:

  1. Wind
  2. Ceiling
  3. Visibility
  4. WX
  5. Temp
  6. DewPt
  7. Altimeter
  8. Density Alt
  9. Clouds

and a MOS with:

  1. Winds
  2. Visibility
  3. Clouds
  4. Precipitation
  5. Temp
  6. DewPt

?

TayE
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  • I had no idea what MOS is, supposedly it's "a statistical model that is created to cover unmanned airports and provide some weather forecasting in more remote areas." Did you perhaps mean the more commonly used TAF? –  Jan 03 '22 at 05:36
  • TAF I believe is put together by a real individual and may use MOS to aid in forecast. MOS on the other hand is completely automated – TayE Jan 03 '22 at 05:47
  • I don't understand the purpose of this question. Obviously the answer is: You need specialized equipment which can determine each of the relevant pieces of information (except density altitude, which can be computed). No? – randomhead Jan 03 '22 at 12:11

1 Answers1

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The METAR report has accepted abbreviations and format and you simply must report them in that format, how you gather that information depends on what you are reporting, a lot of the regs can be found here:

You can report AWOS measurements which is information gathered from an Automated Weather Observation System and (here in the US) is governed by this Advisory Circular, your unit must adhere to those standards.

ASOS systems are automated as well and serve non aviation purposes beyond their aviation implications.

You can report ATIS which requires a human to actually confirm the measurements.

ARTCC facilities have meteorologists assigned to them to provide specialized briefings and tailor forecasts.

If you are just looking for a company that makes a compliant unit, heres one

The MOS reports are published by the NWS and are not "measured" so much as they are computed, it requires forecasts, prior observations and geoclimatic data to compute. The NWS defines it as

Model Output Statistics is an objective weather forecasting technique which consists of determining a statistical relationship between a predictand and variables forecast by a numerical model at some projection time(s). It is, in effect, the determination of the "weather related" statistics of a numerical model.

Dave
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