Exploring new EarthCARE observations for evaluating Greenland clouds in the regional climate model RACMO2.4

Thirza N. Feenstra, Willem Jan van de Berg, Gerd-Jan van Zadelhoff, David P. Donovan, Christiaan T. van Dalum, and Michiel R. van den Broeke

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Cumulative views and downloads (calculated since 28 Nov 2025)

Month	HTML	PDF	XML	Total
Nov 2025	96	14	8	118
Dec 2025	230	178	36	444
Jan 2026	204	118	18	340
Feb 2026	358	141	13	512
Mar 2026	252	127	11	390
Apr 2026	179	64	7	250
May 2026	99	67	4	170
Jun 2026	27	11	3	41
Jul 2026	63	38	5	106
Aug 2026	10	5	1	16

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Short summary

Cloud representation brings large uncertainties in polar climate modeling. We show the first evaluation of Greenland clouds in the Regional Atmospheric Climate Model (RACMO2.4) with new EarthCARE satellite data. Comparing lidar and radar observations and retrieved cloud profiles with co-located RACMO output, we find RACMO captures low ice clouds but underestimates high clouds, mid-altitude liquid clouds, and snowfall. These results highlight EarthCARE's potential to improve polar climate models.