# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/guy-stewart-callendar
# Generated: 2026-08-14T09:27:43.660Z

schema: https://schema.org/Person
url: "https://fame.am/person/guy-stewart-callendar"
name: "Guy Stewart Callendar"
slug: "guy-stewart-callendar"
description: "Guy Stewart Callendar was an English steam engineer and inventor. His main contribution to human knowledge was developing the theory that linked rising carbon dioxide concentrations in the atmosphere to global temperature. In 1938, he was the first to show that the land temperature of Earth had risen over the previous 50 years. This theory, earlier proposed by Svante Arrhenius, has been called the Callendar effect. Callendar thought this warming would be beneficial, delaying a \"return of the deadly glaciers.\""
tagline: "British engineer"
image: "https://upload.wikimedia.org/wikipedia/en/4/4b/GSCallendar1934.jpg"
gender: "male"
country:
  name: "United Kingdom"
  isoCode: "GB"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1898-02-09"
deathDate: "1964-10-03"
livingStatus: "DECEASED"
scores:
  popularity:           47.68
  momentum:             14.25065339586839
  historical:           10.08743866666667
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "BREAKOUT"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://sv.wikipedia.org/wiki/Guy_Stewart_Callendar"
    title: "Guy Stewart Callendar"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Guy_Stewart_Callendar"
    title: "Guy Stewart Callendar"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/Gue_Steward_Callendar"
    title: "Gue Steward Callendar"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Guy_Stewart_Callendar"
    title: "Guy Stewart Callendar"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Guy_Stewart_Callendar"
    title: "Guy Stewart Callendar"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Guy_Stewart_Callendar"
    title: "Guy Stewart Callendar"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Guy_Stewart_Callendar"
    title: "Guy Stewart Callendar"
    type:  "WIKIPEDIA"
  - url: "https://ha.wikipedia.org/wiki/Guy_Stewart_Callendar"
    title: "Guy Stewart Callendar"
    type:  "WIKIPEDIA"
  - url: "https://mg.wikipedia.org/wiki/Guy_Stewart_Callendar"
    title: "Guy Stewart Callendar"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Guy_Stewart_Callendar"
    title: "Guy Stewart Callendar"
    type:  "WIKIPEDIA"
  - url: "https://no.wikipedia.org/wiki/Guy_Stewart_Callendar"
    title: "Guy Stewart Callendar"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Guy_Stewart_Callendar"
    title: "Guy Stewart Callendar"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q610596"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump