Bronze sculptures age distinctly depending on whether they are exposed to coastal or inland climates, with environmental factors playing a crucial role in their deterioration and patina development.

In coastal regions, the high salinity in the air accelerates corrosion. Salt particles deposit on the bronze surface, reacting with moisture to form chlorides that penetrate the metal. This leads to rapid pitting and a rough, uneven patina. Over time, the sculpture may develop a greenish-blue hue due to the formation of copper chloride compounds. Frequent exposure to sea spray and humidity exacerbates this process, often requiring more frequent maintenance to prevent structural weakening.

Inland climates, by contrast, typically have lower humidity and minimal salt exposure. Here, bronze sculptures develop a slower, more uniform patina, often turning a deep brown or green as copper reacts with carbon dioxide and sulfur dioxide in the air. The resulting layer, primarily copper carbonate or sulfate, acts as a protective barrier against further corrosion. However, urban pollution can introduce acidic compounds that may cause localized damage, especially in industrial areas.

Temperature fluctuations also play a role. Coastal areas often experience milder, more stable temperatures, while inland regions may have extreme seasonal variations, causing expansion and contraction that can lead to micro-cracks in the bronze.

Understanding these differences helps conservators tailor preservation strategies—whether through protective coatings, controlled environments, or regular cleaning—to extend the lifespan of bronze sculptures in varying climates.