Changes in simultaneous low-wind and low-solar events (Dunkelflauten) under global warming: a high-resolution simulation study for Germany
地球温暖化下での同時低風・低日射現象（ダンケルフラウテン）の変化：ドイツを対象とした高解像度シミュレーション研究 (AI 翻訳)
Philipp Heinrich, Beate Geyer
🤖 gxceed AI 要約
日本語
気候変動がドイツにおける風力と太陽光発電の同時低出力期間（ダンケルフラウテン）の頻度と持続時間に与える影響を、CMIP6ベースの高解像度NUKLEUSアンサンブルを用いて分析。2Kおよび3K温暖化シナリオ下で風力とPVの容量係数の変化を評価し、北部ドイツの平均風速の減少によりダンケルフラウテンの頻度が若干増加することを示した。
English
This study analyzes changes in the frequency and duration of simultaneous low-wind and low-solar events (Dunkelflauten) in Germany under climate change using a high-resolution CMIP6-based ensemble. Under 2K and 3K warming scenarios, it finds a moderate decline in average wind speed in northern Germany leading to lower wind capacity factors, while PV capacity factors change minimally. The frequency of Dunkelflauten is projected to increase slightly.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本でも再エネ大量導入に伴う天候依存性の高まりが課題となっており、ドイツのダンケルフラウテン研究から得られる示唆は、日本の電力システムの強靭性評価に役立つ。特に、気候変動自体が再エネ出力に与える影響を考慮した長期計画の重要性を示す。
In the global GX context
This paper provides a high-resolution assessment of how climate change itself may exacerbate the intermittency of wind and solar power, a key concern for grid operators globally. The findings on increased Dunkelflauten frequency have implications for energy storage, backup capacity, and renewable portfolio planning in regions with high renewable penetration.
👥 読者別の含意
🔬研究者:Provides a methodology using high-resolution climate ensembles to assess renewable energy resilience under climate change, valuable for energy system modelers.
🏛政策担当者:Highlights the need for adaptation strategies in renewable energy planning to account for climate change impacts on resource availability.
📄 Abstract（原文）
Abstract The usage of renewable energies is essential for achieving climate neutrality, as outlined in the Paris Agreement and the European Green Deal’s target of net-zero emissions by 2050. However, the electricity grid faces significant challenges due to the temporal variability and uneven spatial distribution of renewable energy production. Periods of particularly high or low generation present problems for grid operators. So-called ‘Dunkelflauten’, periods of little sunshine and low wind speeds, result in a low power supply. These fluctuations emphasize the importance of examining how climate change itself may affect renewable energy sources. Understanding such impacts is crucial for developing effective adaptation strategies. This study investigates changes in the frequency and duration of Dunkelflauten in Germany under climate change by utilizing the CMIP6-based high-resolution NUKLEUS ensemble. Unlike previous studies, we do not consider specific installations in order to focus on the change across the entire country. We evaluate changes in wind and photovoltaic (PV) capacity factors under 2 K and 3 K global warming scenarios, using two representative wind turbines to illustrate sensitivity to technical specifications. The results show a moderate decline in average wind speed, particularly in northern Germany, which results in a lower wind capacity factor. In contrast, only minimal changes in the PV capacity factor are projected. Consequently, we conclude that the frequency of Dunkelflauten will increase slightly in the context of a stronger climate change signal. This work highlights the value of high-resolution climate model ensembles for assessing the resilience of renewable energies sources under climate change.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1088/1748-9326/ae7618first seen 2026-06-21 05:03:53
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