Cooling through the atmospheric window

Passive radiative cooling reduces rooftop heat accumulation by reflecting solar radiation and emitting thermal energy through the atmospheric infrared window.

Atmospheric Window (8–13 μm)

The Earth’s atmosphere is partially transparent in the mid-infrared spectrum, allowing thermal radiation to escape into outer space under suitable conditions.

Advanced radiative surfaces combine high solar reflectance with high infrared emissivity to reduce rooftop temperature under daytime exposure.

Radiative cooling physics

>95%

Potential solar reflectance performance

8–13 μm

Atmospheric infrared transmission window

Passive

No compressors or electricity required