Experimental study of the interaction of the atmosphere with polynyas/sea ice near Greenland (IKAPOS)
Final Report Abstract
The experiment IKAPOS (Investigation of Katabatic winds and Polynyas during Summer) was performed in June 2010. It was targeted at the summertime katabatic wind system in coastal areas of northwest Greenland and at atmosphere/sea-ice/ocean exchange processes over the North Water (NOW) Polynya. We got an overview of the climatology of the flow channeling in the Nares Strait by using data of the Global Model of the German Weather (GME). Using the aircraft data, turbulent fluxes and turbulence statistics have been studied for the SBL, including the local scaling behaviour. We achieved an insight of the development of the SBL during conditions of relatively warm synoptically induced northerly winds and channeling effects at Smith Sound associated with a well-pronounced low-level jet system. The findings of IKAPOS are valuable for the verification of numerical models (including climate models) and will contribute to the understanding of the exchange processes over summertime Arctic polynyas and the Greenland ice sheet.
Publications
- 2013: A review and practical guide to in-flight calibration for aircraft turbulence sensors. J. Atmos. Oceanic Technol. 30, 2820–2837
Drüe, C., Heinemann, G.
(See online at https://doi.org/10.1175/JTECH-D-12-00103.1) - 2014: Der katabatische Wind über den polaren Eisschilden. Kap.4.10 in „Warnsignal Klima: Die Polarregionen“ (Ed. Lozán, J. L., H. Grassl, D. Notz & D. Piepenburg, Hamburg, 376pp. ISBN: 978-39809668-63
Heinemann, G.
