External Conventions
Summary of External Resources:
| Resource | Application |
|—————————————————|———————————————————————————————————————————————————|
| UUID | When GCIS must create its own identifier, it may utilize a Universally Unique Identifiers (UUIDs) when no human-readable identifier is reasonable. |
| DOI | While DOI objects can be physical, digital or abstract entities, GCIS plans to assign these persistent identifiers to reports and other specific digital assets produced and published by USGCRP. The associated metadata and the underlying Digital Object Identifier (DOI®) system allow users to transparently locate and track the tagged USGCRP assets. |
| GCMD Keywords | Describes climate change concepts in GCIS in a coherent way using NASA’s structured Earth Science vocabularies. |
| ROR | Provides unique and usable identifiers for GCIS Organizations. Organizations are now mapped to external ROR identifiers through the Lexicon data model. |
| Crossref | Displays publications that cite a USGCRP report on the report’s index page. Currently used for NCA4 only. |
| ORCID | Provides unique and persistent identifiers for People in GCIS. |
| WorldCat | Handles ISBN resolution. |