Mark Oberfield

Fix IWXXM 3.0 schematron rules for METAR/SPECI, AIRMET and SIGMET products.

2

**Describe the bug** Two bugs were discovered with IWXXM 3.0 business rules which caused properly constructed IWXXM 3.0 XML METAR, SIGMET and AIRMET documents to fail schematron validation. This will...

MeteorologicalFeature.MeteorologicalFeature-2 rule has hardwired IWXXM IRI prefix

4

Schematron rules should not assume the use of a particular IRI prefix in assertion tests. With IWXXM IRI prefix set to 'ns1', I expect the following XML to pass validation...

Update to spacewx-A7-3 example

23

The example ['spacewx-A7-3.xml`](https://github.com/wmo-im/iwxxm/blob/master/IWXXM/examples/spacewx-A7-3.xml) does not quite accurately convey the same information as the corresponding Space Weather Advisory [TAC](https://github.com/wmo-im/iwxxm/blob/master/IWXXM/examples/spacewx-A7-3.tac) message. This is probably due to the difficulty of determining, by hand,...

Inconsistent guidance on Space Weather Advisory

3

Per 2025-2RC1 TAC-to-GML guidance for Space Weather Advisories, in the case when affected region(s) are defined with polygons, the element `locationIndicator` is to be set to "http://codes.wmo.int/common/nil/inapplicable". However example spacewx-A7-5.xml...

Guidance on use of gml:identifier elements in WxObjects

1

### Details The use of the `` element in IWXXM documents is new and meant for WxObjects in the WAFS, VONA and QVACI products at the moment. Will the WMO...

common.xsd does not pass validation by itself

9

Complex types defined in common.xsd make use of types defined in measure.xsd but the file is not included. 1. Attempt to perform schema validation on common.xsd 2. Types "iwxxm:LengthWithNilReasonType" and...