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RAOB Validation Campaign Update: Progress Report and Data Quality Assurance

As of December 17, 2012, all planned dedicated RAOBs at the PMRF site have been successfully launched, acquiring all granules ≤ 500 km. High vertical resolution data has been downgraded into 100 layers, and quality assurance (QA) for RAOB data is nearing completion. Issues such as file naming errors and suspect humidity data due to poor ventilation have been addressed. Additionally, a malfunction in the temperature sensor at the ground check station affected early soundings, and necessary corrections are underway. Aerospace Corp. is working on obtaining clearance for scientific publication.

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RAOB Validation Campaign Update: Progress Report and Data Quality Assurance

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  1. Validation Dedicated RAOB Status N. R. Nalli, C. D. Barnet, D. Tobin, L. Borg, A. Mollner, E. Joseph, V. Morris, D. Wolfe, M. Oyola, M. Wilson,C. Tan, X. Xiong, M. Divakarla, A. Gambacorta,T. Reale, T. King, X. Liu, S. Kizer, D. Gu, et al. CrIMSS EDR Validation Telecon 18Dec 2012

  2. ICV Coordinated Dedicated RAOB Campaign Update* *As of 17-Dec-12

  3. PMRF Site RAOB Data QA Update • All planned dedicated RAOBs at the PMRF site have been launched, and all granules ≤ 500 km have been acquired. • High vertical resolution data have been “downgraded” into 100 layer • QA of RAOB data has been ongoing and near completion. • File naming errors (due human error) have been corrected (file names contained the date/time launch information). • Eliminated data at the beginning of the soundings when the sonde was maintained at the pre-launch altitude.  Vaisala said that the humidity data in particular is suspect when the sonde is not moving due to poor ventilation. • In May, the temperature sensor on the ground check station failed early.  As a result, the temperature sensors on the sondes did not have an offset applied by the ground check station, which may lead to a small (RAOB-to-RAOB) random error of ≈0.2 K. • Vaisala says that a new temperature sensor that was put in the ground check station was miscalibrated by −0.3°C (for RAOB data starting with the overpass at 12Z on 2012-09-19, affecting ≈17 soundings). Still waiting on the final word on this, and then these soundings will be reprocessed. • The remaining RAOBs, originally were obtained using an older version of the Vaisala DigiCORA software, have been reprocessed the latest version. • The Aerospace Corp. is trying to obtain the blanket clearance for the data to be used for scientific results/publication.

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