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Using a complex network framework applied to global reanalysis data from the National Centers for Environmental Prediction and the National Center for Atmospheric Research (1981\u20132020), we identify robust cross-seasonal teleconnections linking boreal summer heatwaves with winter cold waves, despite their contrasting manifestations. These connections are modulated by large-scale climate modes such as El Ni\u00f1o-Southern Oscillation and the Arctic Oscillation, suggesting that the underlying dynamics transcend seasonal boundaries. This newly revealed relationship exposes previously unexplored correlations, enhances prospects for seasonal-to-interannual prediction of extremes, and underscores the pivotal role of large-scale climate modes in bridging summer and winter variability across hemispheres.<\/jats:p>","DOI":"10.1063\/5.0315026","type":"journal-article","created":{"date-parts":[[2026,1,29]],"date-time":"2026-01-29T13:50:09Z","timestamp":1769694609000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":1,"title":["Climate network reveals cross-seasonal teleconnections between heatwaves and cold waves"],"prefix":"10.1063","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4281-5593","authenticated-orcid":false,"given":"Ping","family":"Yu","sequence":"first","affiliation":[{"name":"School of Physical Science and Technology, Beijing University of Posts and Telecommunications 1 , Beijing 100876,","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9210-9676","authenticated-orcid":false,"given":"Jun","family":"Meng","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Earth System Numerical Modeling and Application, Institute of Atmospheric Physics, Chinese Academy of Sciences 2 , Beijing 100029,","place":["China"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2026,1,29]]},"reference":[{"key":"2026012908500381700_c1","doi-asserted-by":"publisher","first-page":"259","DOI":"10.1038\/s41893-022-01024-1","article-title":"Future socio-ecosystem productivity threatened by compound drought\u2013heatwave events","volume":"6","year":"2023","journal-title":"Nat. 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