Space Weather Advisory changes for Amendment 82

[mgoberfield]

(METP/5 - WP/2302, Appendix C, PANS-MET, Appendix 7) Rationale for the proposed revisions to Annex 3 and PANS-MET:
a) Moved the “Intensity” from the “Effect” line to the “Observed” and “Forecast” lines, which allows for the intensity to change within an advisory as well as allows for multiple intensities, thus reduces the number of advisories in effect at one time.
b) Allow for an updated advisory to replace up to four existing advisories.
c) Added “NIGHTSIDE” and renamed “DAYLIGHT SIDE” to “DAY SIDE”
d) Updated the template and examples in the Table.
e) Removed the “minutes” from latitude and longitude since this accuracy is beyond the state of the science.
f) Editorial changes to footnote 1 for TEST and EXER.
g) Clarified that altitude information only applies to radiation events.
h) Clarified that the end point of a polygon is a repeat of the start point.
i) With the agreement that MET products in IWXXM form are not constrained to limits of coordinates, made note that advisories disseminated in abbreviated plain language should keep coordinates to a minimum of seven. This same note has been added to other similar MET products.