Net flux is part of Earth’s energy budget. This concept is used to understand how much energy the Earth gets from the Sun, and how much energy the Earth system radiates back to outer space. This energy is. All energy budget parameters describe the “flux,” or flow, of a specific type of electromagnetic energy.
“Net” simply means “total.” The net flux, then, is the total amount of energy that flows into the Earth system. It is calculated by subtracting the energy that leaves the Earth system from the energy that enters the Earth system. That is, Net = Energy In – Energy Out. This parameter includes both shortwave (SW) and longwave (LW) flux.
The name of the parameter indicates all of the information about how the measurement was made. Refer to an overview.
This parameter is reported on a 72-Day cycle and is an average value for that 72-day period.
This parameter is a TOA measurement, meaning that it’s measured at the top of the atmosphere. For the purposes of Earth’s radiation budget, TOA is considered to be about 20 km above the surface of the Earth. Above that there is little interaction between the energy flux and the atmosphere. Since this parameter is measured at the very top edge of the Earth system, it captures the total amount of energy that enters the system.
Because this is an All-Sky parameter, it includes all types of conditions, including clear or cloudy skies that might occur during the measurement.
Overall, this parameter measures the total amount of energy that is added to the Earth system at the top of the atmosphere.