Moon-Based Earth Radiation Budget Experiment Site Selection Analysis Based on Earth Observation Geometry

Although estimating the Earth radiation budget (ERB) by satellite platforms have become more and more reliable, it is still difficult to carry out conclusive evidence that supports whether the Earth is warming. As the important component of ERB, the measurement requirements of Earth's outgoing radiation are to acquire global-scale absolute calibration data. Observing Earth's outgoing radiation on the lunar surface is a feasible way to improve the consistency and continuity of such data. Since the Moon is a celestial body and the sensor can be equipped anywhere on the near-side of the Moon, the site selection issue of a Moon-based platform will be the most vital step. This paper mainly discusses the site selection issue of a Moon-based Earth radiation budget experiment platform from the perspective of Earth observation geometry. By analyzing observation performance, geolocation accuracy, radiation response and solar invasion effects, we suggest that the mid-high latitude will be a better position to equip sensors.