Solar radiation management

DEFINITION & TYPES OF SRM STRATEGIES

Solar radiation management includes techniques that seek to reflect the sunlight reducing at the same time the global warming. These techniques have a go at reducing the amount of sunlight absorbed by the surface of the Earth. If SRM suddenly stopped, the average temperature of the earth’ surface  would increase. SRM is suggested to be a controller of regional and local climate but it is not possible to use on a worldwide scale.

  • Cool roofs

    Cool roofs are the most common reflective surfaces that have a high solar reflectance and also a high thermal emittance. The reflectance is the ability of a material reflecting the sunlight and thermal emittance is the ability to radiate the absorbed energy.

  • GREENHOUSES

    Researches have proved that greenhouses provide an increase in the surface albedo due to its color and texture: they are white and brilliant which reflect very well the solar radiation. Greenhouses are able to offset the radiative forcing by 2 W/m2.Higher surface albedo reduces net incoming shortwave energy.

  • Land & Farming Management

    Changes in grassland have been proposed to increase albedo. Grassland has an albedo of about 20%. This technique can give 0.64 W/m2 of globally averaged negative forcing, which is a minor contribution to offset the positive forcing from a doubling of CO2

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