"nuclear summer" meaning in English

{
  "forms": [
    {
      "form": "nuclear summers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "nuclear summer (plural nuclear summers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Nuclear warfare",
          "orig": "en:Nuclear warfare",
          "parents": [
            "War",
            "Weapons",
            "Conflict",
            "Military",
            "Violence",
            "Hunting",
            "Tools",
            "Human behaviour",
            "Society",
            "Human activity",
            "Technology",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A period, hypothesized to follow a nuclear winter, in which surface temperatures rise to a dangerous degree because of the release of carbon dioxide and methane from decayed organic matter."
      ],
      "id": "en-nuclear_summer-en-noun-WMm9db7Q",
      "links": [
        [
          "nuclear winter",
          "nuclear winter"
        ],
        [
          "surface",
          "surface"
        ],
        [
          "temperature",
          "temperature"
        ],
        [
          "carbon dioxide",
          "carbon dioxide"
        ],
        [
          "methane",
          "methane"
        ]
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "warm period",
          "word": "ydinkesä"
        }
      ],
      "wikipedia": [
        "nuclear summer"
      ]
    }
  ],
  "word": "nuclear summer"
}

{
  "forms": [
    {
      "form": "nuclear summers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "nuclear summer (plural nuclear summers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Nuclear warfare"
      ],
      "glosses": [
        "A period, hypothesized to follow a nuclear winter, in which surface temperatures rise to a dangerous degree because of the release of carbon dioxide and methane from decayed organic matter."
      ],
      "links": [
        [
          "nuclear winter",
          "nuclear winter"
        ],
        [
          "surface",
          "surface"
        ],
        [
          "temperature",
          "temperature"
        ],
        [
          "carbon dioxide",
          "carbon dioxide"
        ],
        [
          "methane",
          "methane"
        ]
      ],
      "wikipedia": [
        "nuclear summer"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "warm period",
      "word": "ydinkesä"
    }
  ],
  "word": "nuclear summer"
}