Fast food

Solar dimming can be a double-edged sword. It is essential for life on Earth because it maintains the planet’s surface temperature, mitigates the initial effects of global warming, and provides plants with the appropriate amount of solar radiation for important processes like photosynthesis. However, too much of the phenomenon can bring unfortunate events like droughts.

In recent news at the Northern Hemisphere, air pollution caused by aerosols was believed to have resulted in an increase in river flow. The pollutants prevent proper sunlight form reaching the Earth and thus reduced evaporation and rise in river flow by as much as 25% (Passary, 2015). The study was led by Nicola Gedney from the British Met Office and it found that the impacts mostly occurred in Europe’s industrial regions. This corresponds with the previous blog post on urbanization and it being a main contributor of aerosol pollutants.

Going back to the effects of solar dimming, its reversal could result in a reduction in river water level due to the fall in river flows. This in turn produces a cause of concern for estimation of future water supplies. As mentioned by Gedney, “With water shortages likely to be one of the biggest impacts of climate change in the future, these findings are important in making projections for the future” (Passary, 2015).

From the above issue we can see that global dimming, albeit not a well-known issue, ties in with the security of our water supplies. This thus stresses on the importance of understanding it and its interactions with global warming so that adequate solutions can be proposed and carried out. Mitigation and adaptation measures to ensure food security need to be paid close attention to too (FAO, 2012) since weather ad climate are crucial determinants of the issue.


FAO (2012). Climate change adaptation and mitigation: Challenges and opportunities in the food sector. Food And Agriculture Organization Of The United Nations.

Passary, S. (2015). Air pollution increases river flow in Northern Hemisphere: StudyTech Times. Retrieved 30 January 2015, from