# Polar ionosphere--Observations

{
  "id": "S2003006487",
  "title": "Polar ionosphere--Observations",
  "url": "/topics/S2003006487",
  "kind": "topic-directory",
  "aeo_cohort": "topic-directory",
  "provider": "lcsh",
  "revision": "131f5f83b7bcccc5",
  "catalogue_revision": "f050b5d4780b1289",
  "numeric_address": "5190622898398044674",
  "address_version": "morton4x16-v1",
  "coordinates": [
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  ],
  "answer_status": "Directory metadata; local answer requires separate source review",
  "truth_status": "Subject descriptor, not a factual answer or a demonstrated knowledge gap"
}



Directory metadata is not a factual answer or evidence of a global knowledge gap.

Source: https://id.loc.gov/authorities/subjects/sh2003006487

No owner-reviewed local answer yet.