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The intensity of albedo temperature effects depends on the amount of albedo and the level of local insolation (solar irradiance); high albedo areas in the Arctic and Antarctic regions are cold due to low insolation, whereas areas such as the Sahara Desert, which also have a relatively high albedo, will be hotter due to high insolation.
The albedo decreases, and so more solar energy is absorbed, leading to more warming and greater loss of the reflective parts of the cryosphere. Inversely, cooler temperatures increase ice cover, which increases albedo and results in greater cooling, which makes further ice formation more likely. [4]
The albedo of several types of roofs (lower values means higher temperatures). Reflective surfaces, or ground-based albedo modification (GBAM), is a solar radiation management method of enhancing Earth's albedo (the ability to reflect the visible, infrared, and ultraviolet wavelengths of the Sun, reducing heat transfer to the surface).
Bio-geoengineering relies on the manipulation of crop attributes, such as through selective plant breeding or genetic engineering, to increase a crop's net albedo.Although there are noticeable differences in albedo between distinct crop types, bio-geoengineering mainly focuses on intra crop modification and substitution, which inherently limits its overall albedo change, but the changes are ...
The smaller cloud particles similarly increase cloud albedo by reducing precipitation and prolonging the lifetime of a cloud. This subsequently increases cloud albedo as solar radiation is reflected over a longer period of time. The Albrecht Effect is the related concept of increased cloud lifetime from cloud nuclei. [5]
The effectiveness of reflective cool pavements is dependent on their ability to reflect solar radiation or albedo. [5] These pavements utilize reflective aggregates, advanced binders, and specialized coatings to increase solar reflectivity for reduced heat absorption, leading to lower surface and ambient temperatures. [1]
Increased solar radiation causes higher surface temperatures and results in a positive feedback loop where arctic ice melts and albedo decreases further. [5] Such a feedback loop can push temperatures past a tipping point for certain irreversible climate domino effects. This is known as the ice-albedo feedback loop. [5]
An increase in planetary albedo of 1% would reduce radiative forcing by 2.35 W/m 2, eliminating most of global warming from current anthropogenically elevated greenhouse gas concentrations, while a 2% albedo increase would negate the warming effect of doubling the atmospheric carbon dioxide concentration. [15]