{"id":16761,"date":"2025-05-29T11:00:50","date_gmt":"2025-05-29T09:00:50","guid":{"rendered":"https:\/\/www.ceab.csic.es\/?p=16761"},"modified":"2025-05-28T09:29:35","modified_gmt":"2025-05-28T07:29:35","slug":"la-reduccio-del-periode-de-congelacio-als-llacs-boreals-dispara-la-seva-contribucio-a-lescalfament-global","status":"publish","type":"post","link":"https:\/\/www.ceab.csic.es\/en\/la-reduccio-del-periode-de-congelacio-als-llacs-boreals-dispara-la-seva-contribucio-a-lescalfament-global\/","title":{"rendered":"The shortening of the freezing period in boreal lakes boosts their contribution to global warming"},"content":{"rendered":"

A study led by Wuhan University, in collaboration with CEAB-CSIC, reveals that lakes\u2014especially those at mid-to-high latitudes in the Northern Hemisphere\u2014are important players in climate change. The shortening of the time their surfaces remain frozen alters the heat exchange between the water and the atmosphere, with effects that go beyond the local scale to influence the global climate. Moreover, this thermal contribution, which has so far been ignored in climate models, could increase by up to 7.5% by the end of the century, further intensifying planetary warming.<\/strong><\/h4>\n

Lakes absorb energy and release it through heat exchange between water and air. The dynamics of this exchange depend on various factors, one of the most important being the ice cover that forms on lakes at mid and high latitudes. Ice acts as a kind of natural insulator: it reflects much of the solar radiation, maintains the water temperature, and limits energy exchange between the lake and the air.<\/p>\n

However, according to the scientific study now published in Nature Communications<\/strong><\/a>, fewer lakes are freezing, and those that still do are frozen for shorter periods\u2014something that is significantly contributing to global climate change.<\/p>\n

\"\"
Daniel Mercado working at CEAB-CSIC’s cluster<\/figcaption><\/figure>\n

Researchers have shown that lakes are releasing more and more heat into the air, especially in northern regions<\/strong> such as Canada, Siberia, and Scandinavia. The key factor is that, due to rising temperatures, ice covers them for a shorter time. Without the ice, they absorb more solar energy and warm more, and in turn, their heat escapes more easily into the air<\/strong>, warming it and further shortening the freezing period. It\u2019s a kind of \u201cvicious cycle\u201d that increasingly warms these lakes and leads them to heat the air even more. This situation not only helps explain local climate changes occurring in lake regions\u2014which are more severe than climate projections had indicated\u2014but also has a notable influence on the global climate<\/strong>.<\/p>\n

The study was conducted using mathematical modelling and supercomputers. Based on data gathered over decades by the scientific community, the researchers created representative lake models to obtain environmentally relevant variables. The work showed that the greatest increase in lake heat emissions comes from mid-to-high latitudes (nearly doubling the global average and far surpassing tropical lake emissions). <\/strong>It also allowed for projections: this effect is expected to intensify by an average of 7.5% by the end of this century.<\/p>\n

Daniel Mercado-Bett\u00edn, a researcher at CEAB-CSIC who participated in the study, explains that \u201cthis research reveals that boreal lakes are contributing to accelerating global change more than previously known.<\/strong> Moreover, it highlights their fundamental role in climate change. There are 1.4 million lakes in the world, so the proportion of heat they emit into the atmosphere can be potentially high. However, this contribution has not been accounted<\/strong> for in temperature increase projections<\/em>.\u201d<\/p>\n

The team emphasizes the importance of the Intergovernmental Panel on Climate Change (IPCC)\u2014one of the world\u2019s leading climate projection bodies\u2014incorporating this information in its upcoming reports, thereby improving climate predictions.<\/p>\n

Open science to project global change impacts<\/strong><\/h4>\n

CEAB-CSIC\u2019s participation in this study is part of the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP)<\/strong><\/a> and is associated with the Global Lake Ecological Observatory Network (GLEON)<\/strong><\/a>. Researcher Daniel Mercado-Bett\u00edn is taking part in this international open science project to make scientific predictions of global change impact patterns. Specifically, he coordinates the lake sector. ISIMIP brings together more than 100 climate modelling groups from around the world who work collaboratively and openly share their results so they can inform policy and management decisions. Simulations<\/strong><\/a> by these groups are carried out on high-performance clusters such as that of the Free University of Brussels<\/strong>, where most calculations for this project were performed.<\/p>\n

\u00a0<\/strong>Article reference: Yuanlin Qiu, Jie Chen, Deliang Chen, Wim Thiery, Daniel Mercado-Bett\u00edn, Lihua Xiong, Jun Xia & R. Iestyn Woolway. Enhanced heating effect of lakes under global warming. Nat Commun 16, 3954 (2025). <\/em><\/strong>https:\/\/doi.org\/10.1038\/s41467-025-59291-3<\/em><\/strong><\/a><\/h5>\n

\u00a0<\/em><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

A study led by Wuhan University, in collaboration with CEAB-CSIC, reveals that lakes\u2014especially those at mid-to-high latitudes in the Northern Hemisphere\u2014are important players in climate change. The shortening of the time their surfaces remain frozen alters the heat exchange between the water and the atmosphere, with effects that go beyond the local scale to influence… The shortening of the freezing period in boreal lakes boosts their contribution to global warming<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":16755,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":70,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[468],"tags":[1821,1491,1100,1564,1809,1482,1608,1188,1734,1715,1825,1139,1799,1752,1756],"class_list":["post-16761","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-featured","tag-artic-en","tag-canvi-climatic-en","tag-climate-change","tag-ecologia-aigues-continentals-en","tag-ecological-prediction","tag-ecosistemes-alta-muntanya-en","tag-limnologia-en","tag-limnology","tag-modeling","tag-modelitzacio-en","tag-modelling","tag-mountain-ecosystem","tag-prediccio-ecologica-en","tag-supercomputacio-en","tag-supercomputing"],"acf":[],"yoast_head":"\nThe shortening of the freezing period in boreal lakes boosts their contribution to global warming | CEAB<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ceab.csic.es\/en\/la-reduccio-del-periode-de-congelacio-als-llacs-boreals-dispara-la-seva-contribucio-a-lescalfament-global\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The shortening of the freezing period in boreal lakes boosts their contribution to global warming | CEAB\" \/>\n<meta property=\"og:description\" content=\"A study led by Wuhan University, in collaboration with CEAB-CSIC, reveals that lakes\u2014especially those at mid-to-high latitudes in the Northern Hemisphere\u2014are important players in climate change. 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