Which mechanism causes a positive feedback effect on glacial melting in high-latitude regions?

💡 Explanation

When ice cover decreases, albedo declines because the reflective ice is replaced by darker land or water, leading to increased absorption of solar radiation that further melts ice. Therefore reduced ice decreases albedo, rather than cloud changes, vegetation effects or increased sublimation each requiring other specific forcing factors.

• Which feedback mechanism regulates global ocean thermohaline circulation when sea ice formation increases?
• Which soil horizon develops rapidly when vegetation cover expands?
• On a sloping terrain underlain by permafrost, which landform results primarily due to extensive solifluction?
• Which mechanism primarily deflects geostrophic currents into coastal boundary currents along continental margins?
• Which risk commonly increases when flood control levees compress underlying organic-rich soils?
• Which mechanism reduces surface salinity when increased glacial melt enters the North Atlantic circulation?