関連する実験動画
Updated: Jul 17, 2026

06:27
Simulating Impacts of Ice Storms on Forest Ecosystems
Published on: June 30, 2020
熱帯森林火災が気候温暖化に及ぼす影響
J T Randerson1, H Liu, M G Flanner
1Department of Earth System Science, University of California, Irvine, CA 92697, USA. jranders@uci.edu
まとめ
ボレアル森林の火災は,最初は温暖化を増加させるが,表面アルベドの変化により80年間のサイクルで気候を冷却する. これは,火災活動の増加が地球温暖化を加速しないかもしれないことを示唆しています.
科学分野:
- 気候科学 気候科学
- エコロジー エコロジー エコロジー
- 大気科学 大気科学
背景:
- ボレアル・フォレストの火災は,地球の気候システムに大きな影響を及ぼします.
- これらの火事の純放射力フォッシングを理解することは,気候モデリングに不可欠です.
研究 の 目的:
- 熱帯森林火災の統合放射線強制効果を定量化するために.
- 温室効果ガス,エアロゾール,ブラックカーボン,アルベドの変化が80年間の火災サイクルで気候に及ぼす影響を分析するために.
主な方法:
- ボレアル森林火災の測定と分析.
- 温室効果ガス,エアロゾール,黒炭素の堆積による影響の統合.
- 地表アルベドの火災後の変化の評価.
主要な成果:
- 純放射強制は火災後の最初の年に正値 (+34 ± 31 W/m2) であった.
- 80年の火災サイクルでは,純放射強制は負の (-2.3 ± 2.2 W/m2) でした.
- 表面アルベドの多年期の増加は,火災によって排出される温室効果ガスよりも大きな影響を及ぼしました.
結論:
- ボレアル森林の火災は,80年サイクルで平均すると,気候に冷却効果があります.
- 将来の北極地方の火災活動の増加は,必ずしも気候変動を加速させるわけではないかもしれない.
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