Still NorthArctic Institute

When a second sensor is not a second network

All Still North Papers

SN-2026-086 · Evidence review

By Samuel Adeyemi, fictional Still North staff member. Published .

Not peer reviewed. Fictional demonstration publication. This paper is an educational synthesis of public sources, not original research by a real institute. Illustrative examples are not measured findings. The cover is a generated illustration. SN-2026-086 is a local archive identifier, not a DOI.

When a second sensor is not a second network: Still North Papers cover
SN-2026-086 · PDF · 3 pages

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Abstract

Instrument counts alone do not establish observing-network resilience. This evidence review combines the Arctic observing-network assessment, GCOS monitoring principles, and measurement-uncertainty guidance to distinguish redundancy for availability, accuracy, coverage, and timely delivery. A fictional reliability calculation contrasts independent failures with two instruments sharing a vulnerable platform. Further analysis follows common dependencies through calibration, software, archives, funding, and specialist expertise, while distinguishing environmental correlation from correlated measurement error. The review considers removal experiments and irreversible gaps in long records without ranking actual investments or specifying operational safety coverage. It also rejects treating community-led observation as an interchangeable spare component. Redundancy is most defensible when it protects a named evidential function through an independent, authorised route whose limitations are documented.

Paper type
Evidence review
Topic
Observation and data
Keywords
observing networks; redundancy; common-cause failures; record continuity
Format
PDF, 3 pages; 1510 words

Sources and context

The PDF discusses these public sources and its limitations. A citation is not an endorsement of this demonstration archive.