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Back温暖化で4度上昇時の国内スキー場は7カ所に減少、北海道大などが分析
温暖化で4度上昇時の国内スキー場は7カ所に減少、北海道大などが分析
Developing
朝日新聞1 hour agoEnvironment2 min readJapanView translation

温暖化で4度上昇時の国内スキー場は7カ所に減少、北海道大などが分析

Quick Look

温暖化により世界平均気温が産業革命前より4度上昇した場合、国内で天然雪のみで安定的に営業できるスキー場は全国で7カ所に減少すると、北海道大学と森林総合研究所の研究チームが気象庁の気候予測データを用いたシミュレーションで分析した。2度上昇時では全面営業可能なスキー場は53カ所と推定され、研究者は4度ではスキー産業に壊滅的影響があると指摘している。

AI-generated summary

Why It Matters

パリ協定は2015年のCOP21で採択された国際的な気候変動枠組みで、世界平均気温の上昇を産業革命前より2度以下に抑えることを目標としている。

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温暖化の進行で世界の平均気温が産業革命前より4度上昇した場合、国内で天然雪を用いて安定的に営業できるスキー場が7カ所になると、北海道大学と森林総合研究所の研究チームが分析した。スキー場の廃業により地域観光やスキー文化への影響が懸念されるという。

チームは室内スキー場などを除いた国内349カ所のスキー場を抽出。気象庁が公開する気候予測データをもとに、各スキー場ごとに積雪シミュレーションを実施した。

その結果、気候変動対策をほとんど行わないと到達するとされる「4度」の条件では、天然雪のみで安定的に全面で営業できるスキー場は全国7カ所で、北海道(3カ所)、秋田県、山形県、長野県、群馬県だった。一部で営業可能なのは26カ所だった。

2015年のCOP21で全ての国が参加する新たな国際枠組みとして採択されたパリ協定の目標値に相当する「2度」の条件では、全面で営業可能は53カ所、一部で可能なのは108カ所と推定された。北大の吉沢直講師(観光地理学)は「4度では日本のスキー産業は壊滅的な影響を受け、2度では、高標高、高緯度のスキー場を中心に営業可能性が残ることが明らかになった」と話す。

シミュレーションでは過去実…

What to Watch

AI outlook — possibilities, not facts

  • 温暖化が4度進行した場合、国内の天然雪のみで安定的に営業できるスキー場は7カ所に減少する

    Likely · Within years

  • 温暖化が2度に抑えられた場合、全面で営業可能なスキー場は53カ所残ると予測される

    Likely · Within years

Open Questions

  • 7カ所に減少すると予測されるスキー場の具体的な名前は何か
  • 一部で営業可能とされる26カ所のスキー場はどの地域に集中しているか
  • スキー場の廃業が地域経済に与える具体的な影響はどの程度か

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This article was originally published by 朝日新聞.

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