Radio occultation (RO) is a technique used for measuring planetary atmosphere properties by orbiting satellites, like temperature, pressure, and water vapor. Typically using Global Navigation Satellite System (GNSS) signals, this technique is often assessed with atmospheric properties measured by radiosonde (RS) stations around the world. The aim of this study is to assess the radio occultation temperature and pressure profiles from the Constellation Observing System for Meteorology, Ionosphere and Climate 2 (COSMIC-2) and Korean Multi-purpose Satellite 5 (KOMPSAT-5) satellites using data from collocated radiosonde stations over the Philippines. Their deviations are analyzed using their mean and standard deviations. COSMIC-2 and KOMPSAT-5 temperature and pressure from the atmPrf product are in good agreement with radiosondes above 5–10 km, where moisture is negligible. COSMIC-2 has good agreement with radiosonde stations in 2020. KOMPSAT-5 has good agreement with radiosonde stations in 2019–2020. For both satellites, the deviations are larger within the lower troposphere, compared to heights above ~5–10 km. For both years, KOMPSAT-5 deviations are higher during the summer season until 10 km. For COSMIC-2, deviations are higher during the summer and autumn seasons. The quality of these results shows COSMIC and KOMPSAT as possible high-quality applications for weather prediction. In addition to providing comparable high-precision data, radio occultation can provide more dense coverage of areas without radiosondes.

Background/Objectives: Dental biofilm formation on prosthetic materials contributes to oral diseases and material degradation. This pilot study evaluated the feasibility of combining time-domain optical coherence tomography (TD-OCT) and non-contact atomic force microscopy (NC-AFM) to characterize biofilm-associated optical and surface changes in dental prosthesis materials following antiseptic treatment. Methods: Acrylic resin, composite resin, and stainless-steel specimens were inoculated with Streptococcus mutans biofilms and exposed to water, Orahex, and Watsons mouthwash. TD-OCT was used to obtain extinction coefficient (EC) and optical thickness measurements, while NC-AFM was performed on Orahex-treated specimens to assess nanoscale surface morphology. EC distributions were analyzed descriptively from valid TD-OCT A-scans. Results: Within the examined specimens, EC distributions varied following biofilm formation and antiseptic treatment, with material-dependent responses. Composite resin exhibited the clearest reduction in EC following Watsons treatment, whereas acrylic resin and stainless-steel specimens showed more variable responses. Physical thickness remained relatively stable, while NC-AFM observations of the Orahex-treated specimens supported the TD-OCT findings by demonstrating corresponding surface morphological changes. Conclusions: This pilot study demonstrates the preliminary feasibility of integrating TD-OCT with NC-AFM for non-destructive evaluation of biofilm-associated optical and surface changes in dental prosthesis materials. The findings are descriptive and exploratory, highlighting the potential of TD-OCT for monitoring prosthetic materials while emphasizing the need for future studies incorporating independent biological replicates and complementary biological validation techniques.