U
The total amount of terrestrial electromagnetic energy emitted from the Earth's surface that irradiates a specified unit horizontal surface from underneath.
Longwave irradiance emitted by the Earth's surface that irradiates a specified unit horizontal surface from underneath.
Information about the treatment and reuse of urban wastewater.
Information about water in the urban stormwater drainage system.
Information about wastewater that is disposed of through a sewerage system.
Information about water supplied by urban water utilities.