DOI: 10.1175/2010jtecha1439.1. Deployment of a Tethered-Balloon System for Microphysics and Radiative Measurements in Mixed-Phase Clouds at Ny-Ålesund and South Pole

Deployment of a Tethered-Balloon System for Microphysics and Radiative Measurements in Mixed-Phase Clouds at Ny-Ålesund and South Pole

10.1175/2010jtecha1439.1

Crossref journal-article

American Meteorological Society

Journal of Atmospheric and Oceanic Technology (12)

Abstract

Abstract A tethered-balloon system capable of making microphysical and radiative measurements in clouds is described and examples of measurements in boundary layer stratus clouds in the Arctic and at the South Pole are presented. A 43-m3 helium-filled balloon lofts an instrument package that is powered by two copper conductors in the tether. The instrument package can support several instruments, including, but not limited to, a cloud particle imager; a forward-scattering spectrometer probe; temperature, pressure, humidity, and wind sensors; ice nuclei filters; and a 4-π radiometer that measures actinic flux at 500 and 800 nm. The balloon can stay aloft for an extended period of time (in excess of 24 h) and conduct vertical profiles up to about 1–2 km, contingent upon payload weight, wind speed, and surface elevation. Examples of measurements in mixed-phase clouds at Ny-Ålesund, Svalbard (79°N), and at the South Pole are discussed. The stratus clouds at Ny-Ålesund ranged in temperature from 0° to −10°C and were mostly mixed phase with heavily rimed ice particles, even when cloud-top temperatures were warmer than −5°C. Conversely, mixed-phase clouds at the South Pole contained regions with only water drops at temperatures as cold as −32°C and were often composed of pristine ice crystals. The radiative properties of mixed-phase clouds are a critical component of radiative transfer in polar regions, which, in turn, is a lynch pin for climate change on a global scale.

Bibliography

Lawson, R. P., Stamnes, K., Stamnes, J., Zmarzly, P., Koskuliks, J., Roden, C., Mo, Q., Carrithers, M., & Bland, G. L. (2011). Deployment of a Tethered-Balloon System for Microphysics and Radiative Measurements in Mixed-Phase Clouds at Ny-Ãlesund and South Pole. Journal of Atmospheric and Oceanic Technology, 28(5), 656â670.

Authors 9

R. Paul Lawson (first)
Knut Stamnes (first)
Jakob Stamnes (first)
Pat Zmarzly (first)
Jeff Koskuliks (first)
Chris Roden (first)
Qixu Mo (first)
Michael Carrithers (first)
Geoffrey L. Bland (first)

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Dates

Type	When
Created	15 years, 3 months ago (May 10, 2010, 2:44 p.m.)
Deposited	4 years, 8 months ago (Dec. 7, 2020, 5:20 p.m.)
Indexed	1 year, 6 months ago (Feb. 14, 2024, 2:39 a.m.)
Issued	14 years, 4 months ago (May 1, 2011)
Published	14 years, 4 months ago (May 1, 2011)
Published Online	14 years, 4 months ago (May 1, 2011)
Published Print	14 years, 4 months ago (May 1, 2011)

Funders 0

None

BibTeX

@article{Lawson_2011, title={Deployment of a Tethered-Balloon System for Microphysics and Radiative Measurements in Mixed-Phase Clouds at Ny-Ålesund and South Pole}, volume={28}, ISSN={1520-0426}, url={http://dx.doi.org/10.1175/2010jtecha1439.1}, DOI={10.1175/2010jtecha1439.1}, number={5}, journal={Journal of Atmospheric and Oceanic Technology}, publisher={American Meteorological Society}, author={Lawson, R. Paul and Stamnes, Knut and Stamnes, Jakob and Zmarzly, Pat and Koskuliks, Jeff and Roden, Chris and Mo, Qixu and Carrithers, Michael and Bland, Geoffrey L.}, year={2011}, month=may, pages={656–670} }

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