Fog Spatial Distributions over the Central Namib Desert - An Isotope Approach

A groundbreaking study reveals that the Namib Sand Sea experiences at least three distinct types of fog—advective, radiation, and mixed—contrary to the long-held belief that advective fog dominates this arid region. Using stable isotope analysis (δ18O and δ2H), researchers identified these fog types and their source waters, challenging the assumption that advective fog alone shapes the desert's fog-zone ecosystem. The findings indicate radiation fog was more prevalent during the study period, while mixed fog likely forms when advective fog interacts with local moisture or dissipates inland. This discovery underscores the complexity of fog dynamics in the Namib Desert and highlights the need for nuanced climate models to predict the impacts of climate change on this unique environment.

Kaseke, K. F., Tian, C., Wang, L., Seely, M., Vogt, R., Wassenaar, T., & Mushi, R. (2018). Fog Spatial Distributions over the Central Namib Desert - An Isotope Approach. Aerosol and Air Quality Research, 18(1), 49–61. https://doi.org/10.4209/aaqr.2017.01.0062