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These two factors critically affect the nature of the AMOC response. Our study fills that gap with a set of three hosing experiments using a perpetual 1950 radiative forcing with the global configurations of the eddy-rich climate model EC-Earth3P-VHR. The model is forced for 21 years with a spatial and monthly distribution of Greenland meltwater fluxes derived from observations. An annual average close to 0.04 Sv is included, in addition to the model river runoff, which is spread in the upper ocean’s coastal points connected to each hydrological basin. Within the first year, we observe a response of reduced salinity in the Greenland and Labrador currents. Since the beginning of the experiments, these currents also suffer an acceleration and cooling due to the enhanced stratification produced by the freshwater. The impact of the freshwater induced changes also leads to a rapid weakening of the AMOC at subpolar latitudes.  Around year 7, deep mixing in the Labrador Sea begins to weaken due to as freshwater anomalies accumulate through lateral exchanges with the boundary currents. This shallowing of the mixed layer further weakens the AMOC, resulting in a stronger reduction that reaches also the subtropical latitudes. By the end of the simulation, the AMOC has weakened by almost 3 Sv at subpolar latitudes (i.e. a decrease of around 20 %), with an average relative decrease of 10 % for the whole Northern Hemisphere. The reduction in the AMOC is strong enough for some global climate impacts to emerge, such as the “bipolar seesaw” temperature response.</jats:p>"],"publicationDate":"2025-12-04","publisher":"Copernicus GmbH","embargoEndDate":null,"sources":["Crossref","eISSN:"],"formats":["application/pdf"],"contributors":null,"coverages":null,"bestAccessRight":{"code":"c_abf2","label":"OPEN","scheme":"http://vocabularies.coar-repositories.org/documentation/access_rights/"},"container":null,"documentationUrls":null,"codeRepositoryUrl":null,"programmingLanguage":null,"contactPeople":null,"contactGroups":null,"tools":null,"size":null,"version":null,"geoLocations":null,"id":"doi_dedup___::c5e72ff281162274f8d9612c81c8d0c9","originalIds":["10.5194/egusphere-egu26-12740","50|doiboost____|ad490fcf49c17fc13b9ec13639fa25a4","10.5194/egusphere-2025-5882","50|doiboost____|c5e72ff281162274f8d9612c81c8d0c9","oai:publications.copernicus.org:egusphere135774","50|copernicuspu::bb0081f2c1a35ffed158b8a7e7b7e560"],"pids":[{"scheme":"doi","value":"10.5194/egusphere-egu26-12740"},{"scheme":"doi","value":"10.5194/egusphere-2025-5882"}],"dateOfCollection":null,"lastUpdateTimeStamp":null,"indicators":{"citationImpact":{"citationCount":0.0,"influence":2.2251732E-9,"popularity":2.342466E-9,"impulse":0.0,"citationClass":"C5","influenceClass":"C5","impulseClass":"C5","popularityClass":"C5"}},"projects":[{"id":"corda_____he::5e102ff2ae804b772fa8af555b17685c","code":"101081383","acronym":"EERIE","title":"European Eddy-RIch ESMs","funder":"European Commission","pids":[{"scheme":"doi","value":"10.3030/101081383"}]},{"id":"ukri________::4b48a64d0aef6bb255f79038e66f87dd","code":"10057890","acronym":null,"title":"EERIE","funder":"UK Research and Innovation","pids":null},{"id":"ukri________::c691f50802836a04e0926740c27d49a1","code":"10049639","acronym":null,"title":"European Eddy-RIch Earth System Models (EERIE)","funder":"UK Research and Innovation","pids":null},{"id":"ukri________::f2c8c7a65247d47d88e7528eb19282f8","code":"10040510","acronym":null,"title":"European Eddy-RIch ESMs (EERIE)","funder":"UK Research and Innovation","pids":null},{"id":"ukri________::af36709663249805aa50d38de6cc9eba","code":"10040984","acronym":null,"title":"European Eddy-RIch ESMs","funder":"UK Research and Innovation","pids":null}],"organizations":[{"legalName":"Max Planck Society","acronym":"MPG","id":"openorgs____::5a405a89387d1881afa956f475994e10","pids":[{"scheme":"ISNI","value":"0000000121051091"},{"scheme":"ROR","value":"https://ror.org/01hhn8329"},{"scheme":"GRID","value":"grid.4372.2"},{"scheme":"PIC","value":"999990267"},{"scheme":"RRID","value":"RRID:nlx_55250"},{"scheme":"FundRef","value":"501100004189"},{"scheme":"RRID","value":"RRID:SCR_011366"},{"scheme":"Wikidata","value":"Q158085"},{"scheme":"OrgRef","value":"614753"},{"scheme":"mag_id","value":"149899117"},{"scheme":"wikidata","value":"Q158085"},{"scheme":"fundref","value":"501100004189"}]},{"legalName":"Barcelona Supercomputing Center","acronym":"BSC","id":"openorgs____::3d4f7bd3479f194d3b5f868fa25bc53a","pids":[{"scheme":"ISNI","value":"0000000403871602"},{"scheme":"ROR","value":"https://ror.org/05sd8tv96"},{"scheme":"GRID","value":"grid.10097.3f"},{"scheme":"Wikidata","value":"Q1580126"},{"scheme":"FundRef","value":"501100006433"},{"scheme":"mag_id","value":"2799803557"},{"scheme":"wikidata","value":"Q1580126"},{"scheme":"fundref","value":"501100006433"}]},{"legalName":"MAX PLANCK INSTITUTE FOR METEOROLOGY","acronym":null,"id":"anr_________::326ca437445274583a87e1fb00e2985f","pids":null},{"legalName":"University of Barcelona (UB)","acronym":"University of Barcelona (UB)","id":"pending_org_::41b446de3a30033977674529b1dbf761","pids":null},{"legalName":"BARCELONA SUPERCOMPUTING CENTER - 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