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Satellite observations are often spatially aggregated to coarser resolutions, typically 1\u00a0\u00d7\u00a01\u00b0 scenes. However, on such spatial scales, the cloud albedo tends to be heterogeneous, whereas the <jats:italic>\u03b2<\/jats:italic> approximation assumes homogeneity. Here, we demonstrate that the common practice of aggregating satellite data and neglecting cloud albedo heterogeneity results in an average overestimation of 10% in previous estimates of the RF<jats:sub>aci<\/jats:sub>. Additionally, we establish a relationship between the magnitude of the bias in <jats:italic>\u03b2<\/jats:italic> and Stratocumulus morphologies, providing a physical context for cloud heterogeneity and the associated bias. Lastly, we propose a correction method that can be applied to cloud albedo gridded data.<\/jats:p>","DOI":"10.1029\/2023gl105282","type":"journal-article","created":{"date-parts":[[2023,9,14]],"date-time":"2023-09-14T16:56:23Z","timestamp":1694710583000},"update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Spatial Aggregation of Satellite Observations Leads to an Overestimation of the Radiative Forcing due to Aerosol\u2010Cloud Interactions"],"prefix":"10.1029","volume":"50","author":[{"ORCID":"http:\/\/orcid.org\/0000-0001-5618-9402","authenticated-orcid":false,"given":"Tom","family":"Goren","sequence":"first","affiliation":[{"name":"Department of Geography and Environment Bar\u2010Ilan University Ramat Gan Israel"},{"name":"Institute for Meteorology Leipzig University Leipzig Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-2822-5303","authenticated-orcid":false,"given":"Odran","family":"Sourdeval","sequence":"additional","affiliation":[{"name":"UMR 8518\u2010LOA\u2010Laboratoire d'Optique Atmosph\u00e9rique CNRS University of Lille Lille France"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-8013-5831","authenticated-orcid":false,"given":"Jan","family":"Kretzschmar","sequence":"additional","affiliation":[{"name":"Institute for Meteorology Leipzig University Leipzig Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0001-7057-194X","authenticated-orcid":false,"given":"Johannes","family":"Quaas","sequence":"additional","affiliation":[{"name":"Institute for Meteorology Leipzig University Leipzig Germany"}]}],"member":"13","published-online":{"date-parts":[[2023,9,14]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1175\/1520-0442(2000)013<4042:iafbha>2.0.co;2"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1029\/2019rg000660"},{"key":"e_1_2_8_4_1","volume-title":"Clouds and aerosols","author":"Boucher O.","year":"2013"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1175\/1520-0469(1994)051<3776:ipamce>2.0.co;2"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/0034-4257(89)90108-9"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature12674"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.5194\/acp-22-641-2022"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.1921231117"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1029\/2019av000111"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.5194\/acp-22-3303-2022"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1029\/2022gl101169"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1029\/2019gl085412"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1029\/2018GL078122"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1029\/2017RG000593"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.5194\/acp-14-7291-2014"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.5194\/acp-19-5331-2019"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.5194\/acp-20-613-2020"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.1617765114"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-019-13372-2"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-018-04068-0"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.1126232"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1175\/1520-0469(1987)044<1734:dotsot>2.0.co;2"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1175\/jtech1712.1"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1029\/2000gl012051"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1002\/2016jd026141"},{"key":"e_1_2_8_27_1","doi-asserted-by":"publisher","DOI":"10.1002\/2015gl067070"},{"key":"e_1_2_8_28_1","doi-asserted-by":"crossref","unstructured":"McCoy I. 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