If the wind is from true north at 8 knots with a magnetic declination of plus 10 degrees, how would this be coded?

To code the wind coming from true north, we first need to understand that true north is represented by 360 degrees. In aviation and meteorological reporting, wind direction is always expressed in terms of where it originates, using true north as the reference point.

The wind is reported to be from true north at 8 knots. In standard coding for wind direction and speed, it would be expressed in degrees followed by the speed in knots. Therefore, from true north (360 degrees), the wind direction remains 360 when it's coming from that point, irrespective of the magnetic declination. The declination does not alter the reported true wind direction but rather relates to compasses which may show deviation based on magnetic influences.

Thus, the wind coming from true north at 8 knots would be coded as 36008KT, indicating a wind direction of 360 degrees at a speed of 8 knots. The inclusion of 'KT' at the end denotes the measurement is in knots.

This is why the correct answer is formed this way; it succinctly conveys both the direction and speed of the wind accurately in meteorological reports.