Interactive comment on “Evaluation of two Vaisala RS92 radiosonde solar radiative dry bias correction algorithms” by A. M. Dzambo et al

Interactive comment on “Evaluation of two Vaisala RS92 radiosonde solar radiative dry bias correction algorithms” by A. M. Dzambo et al

Interactive comment on “Evaluation of two Vaisala RS92 radiosonde solar radiative dry bias correction algorithms” by A. M. Dzambo et al

The paper evaluates two different bias correction schemes for Vaisala RS92 measurements. Given that RS92 sensors are used globally to measure tropospheric humidity, the comparison is valuable. Because of my interest in the topic, I am providing a few comments that may help to improve the paper. However, please note that the comments here should not be considered as editor’s decision but solely ...

Radiation Dry Bias of the Vaisala RS92 Humidity Sensor

The comparison of simultaneous humidity measurements by the Vaisala RS92 radiosonde and by the Cryogenic Frostpoint Hygrometer (CFH) launched at Alajuela, Costa Rica, during July 2005 reveals a large solar radiation dry bias of the Vaisala RS92 humidity sensor and a minor temperature-dependent calibration error. For soundings launched at solar zenith angles between 10° and 30°, the average dry ...

Reference quality upper-air measurements: GRUAN data processing for the Vaisala RS92 radiosonde

The GCOS (Global Climate Observing System) Reference Upper-Air Network (GRUAN) data processing for the Vaisala RS92 radiosonde was developed to meet the criteria for reference measurements. These criteria stipulate the collection of metadata, the use of well-documented correction algorithms, and estimates of the measurement uncertainty. An important and novel aspect of the GRUAN processing is t...

Accuracy assessment and correction of Vaisala RS92 radiosonde water vapor measurements

[1] Relative humidity (RH) measurements from Vaisala RS92 radiosondes are widely used in research and operational applications, but their accuracy is not well characterized as a function of height, RH, and time of day (or solar altitude angle). This study compares RS92 RH measurements to simultaneous water vapor measurements from three reference instruments of known accuracy. Cryogenic frost po...