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About

Junqiang Sun is a specialist in satellite remote sensing calibration and lunar-based radiometric measurements, with research centered on the precise calibration of Earth-observing instruments in orbit. His most influential contribution—cited 67 times—demonstrated how observations of the Moon serve as a powerful cross-calibration technique for two landmark NASA instruments, SeaWiFS and MODIS. By leveraging the Moon as a stable, predictable radiometric reference, Sun helped establish a rigorous methodology for ensuring consistency between satellite sensors over time, a critical challenge in long-term environmental monitoring. Building on this foundation, Sun developed an improved lunar irradiance model using multiyear MODIS observations, refining how scientists interpret and apply lunar data for instrument characterization. His more recent work on establishing an SI-traceable uncertainty budget for lunar irradiance scales reflects a commitment to elevating measurement standards to metrological rigor, bridging satellite remote sensing with fundamental radiometric traceability. With research spanning over a decade and contributions that underpin the calibration strategies of major Earth observation missions, Sun's work has meaningfully advanced the reliability of satellite-derived environmental data—directly benefiting climate science, oceanography, and atmospheric research communities worldwide.