"sombra orográfica" meaning in Spanish

{
  "forms": [
    {
      "form": "sombras orográficas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "sombra orográfica f (plural sombras orográficas)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "es",
          "name": "Meteorology",
          "orig": "es:Meteorology",
          "parents": [
            "Atmosphere",
            "Earth sciences",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "rain shadow"
      ],
      "id": "en-sombra_orográfica-es-noun-6HakQaEL",
      "links": [
        [
          "rain shadow",
          "rain shadow"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "word": "sombra orográfica"
}

{
  "forms": [
    {
      "form": "sombras orográficas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "sombra orográfica f (plural sombras orográficas)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish lemmas",
        "Spanish multiword terms",
        "Spanish nouns",
        "Spanish nouns with red links in their headword lines",
        "es:Meteorology"
      ],
      "glosses": [
        "rain shadow"
      ],
      "links": [
        [
          "rain shadow",
          "rain shadow"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "word": "sombra orográfica"
}