Cloud base height determines fog occurrence  patterns in the Namib Desert

Malik, Deepanshu; Andersen, Hendrik; Cermak, Jan; Vogt, Roland; Adler, Bianca

doi:10.5194/acp-26-681-2026

Articles | Volume 26, issue 1

https://doi.org/10.5194/acp-26-681-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Aerosol, fog, climate, and biogeochemistry in southern Africa...

https://doi.org/10.5194/acp-26-681-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 1

Research article

|

15 Jan 2026

Research article |

| 15 Jan 2026

Cloud base height determines fog occurrence patterns in the Namib Desert

Deepanshu Malik, Hendrik Andersen, Jan Cermak, Roland Vogt, and Bianca Adler

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Cumulative views and downloads (calculated since 22 Jul 2025)

Month	HTML	PDF	XML	Total
Jul 2025	184	22	10	216
Aug 2025	366	40	10	416
Sep 2025	1,036	30	16	1,082
Oct 2025	90	24	14	128
Nov 2025	94	14	8	116
Dec 2025	98	72	4	174
Jan 2026	539	227	32	798
Feb 2026	248	208	18	474
Mar 2026	278	346	9	633
Apr 2026	188	154	12	354
May 2026	154	117	8	279
Jun 2026	36	35	2	73
Jul 2026	154	79	13	246
Aug 2026	185	123	21	329
Sep 2026	119	100	82	301

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Short summary

We investigated cloud base height changes in the Namib Desert and developed a method to estimate it using ground-based humidity data. This improves fog monitoring by distinguishing fog from low clouds, which satellites alone cannot reliably do. Our results reveal diurnal patterns and linkages to coastal proximity in the vertical dynamics of fog and low clouds, highlighting key atmospheric processes with potential importance for future research.