Automated Radiosonde Launchers (ARLs) are increasingly adopted for upper-air observations as they offer major operational advantages compared to manual launches, but they introduce new challenges for maintaining reference-quality humidity measurements within the GCOS Reference Upper-Air Network (GRUAN). In particular, the applicability of the pre-launch Standard Humidity Chamber (SHC) test, routinely used for manual radiosonde launches, has not been systematically assessed for radiosondes stored inside ARLs prior to launch.
GCOS Reference Upper-Air Network
Title
Assessment of humidity ground checks for GRUAN-compliant automatic radiosonde operations
Authors
Romanens, G., Martucci, G., Rosoldi, M., Poltera, Y., Cardós, C., Prats, N., Ambe, S., Cosimato, G., Farah, A., Félix, C., Gandolfi, I., Haefele, A., Hernández, M., Iwabuchi, M., Jann, P., Lam, J. M. C., Marra, F., Rodríguez, J. M., Roulet, Y.-A., Tanaka, Y., Dirksen, R., and Madonna, F.
Published
by EGUsphere [preprint] (EGUS) at 2026-08-12 in review
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