Radioactivity soundings from the high-Arctic ASCOS expedition 2008

Jussi Paatero

Profiles of radioactivity were measured by a Vaisala add-on radioactivity sonde for a few of the radiosoundings, measuring Geiger–Müller tube count rates and dose rates were obtained by the radioactivity sensor, launched from the helipad of the Icebreaker Oden.

Citation

Jussi Paatero (2018) Radioactivity soundings from the high-Arctic ASCOS expedition 2008. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/oden-ascos-2008-radioactivity-1

References

Tjernström, M. et al. 2014. The Arctic Summer Cloud Ocean Study (ASCOS): overview and experimental design. Atmospheric Chemistry and Physics, 14, 2823–2869. https://doi.org/10.5194/acp-14-2823-2014

Data description

Radioactivity soundings, Sounding ground station location: IB Oden, 7th deck;
Sonde launch: IB Oden, helicopter deck; Sonde: Vaisala RS92-SGPD and NSS921;
Ground station: Vaisala DigiCORA III. Vertical profiles of the GM tube count rates and the dose rates in the atmosphere, height 0-37 km.

Comments

Radiosoundings were launched every six hours (00, 06, 12 & 18UTC) and additionally before each helicopter flight (if not at one of the normal times), using Vaisala RS92 sondes. Balloons were launched from the helipad of Oden about 13 m above sea level, while the Vaisala DigiCORA receiving station was located on the port side of the 7th deck. Soundings measure pressure, temperature and relative humidity as the balloon roses through the air, at about 4-6 ms^-1. From temperature and pressure, altitude is calculated using the hydrostatic relationship. Winds are measured by tracking the sonde using GPS. The data has been through several QC procedures and raw sounding data has been reprocessed using the available surface observation operating in so-called “research mode”; bad or dubious values are replaced by NaN. For a few soundings the RS92 sensor package was complemented either by radioactivity or ozone sensors.

Original address: http://www.ascos.se/index.php?q=node/248

Files:
ASCOS_Radioactivity_Soundings_FMI.xls (1.71 MB)