Clouds

Bounding the role of clouds, and sensitivities to aerosols, in the Arctic with in situ observations

The IASOA Cloud working group will form during winter 2013-2014 to identify key science questions and address how they can be bound with observational data.

Ground based observations of Arctic clouds are some of the most valuable and rare datasets collected at Arctic observatories.  These observations are limited by cost, complexity and the energy and maintenance requirements of active sense.  Still the chart below shows that there are many excellent cloud observations available, particularly from the DOE-ARM site at Barrow, AK as well as the ICECAPS experiment from Summit, Greenland.  These datasets are extremely large and typically available only in netcdf format.

Cloud occurence as compared at five IASOA observatories and SHEBA.

 

Publication Highlights

Bennartz, R., M. D. Shupe, D. D. Turner, V. P. Walden, K. Steffen, C. J. Cox, M. S. Kulie, N. B. Miller, and C. Pettersen, 2013: July 2012 Greenland melt extent enhanced by low-level liquid clouds. Nature, 496, 83-86, doi:10.1038/nature12002.

Shupe,M. D.et al.High and dry: new observations of tropospheric and cloud properties above the Greenland Ice Sheet. Bull. Am. Meteorol. Soc.94, 169–186 (2013).

Shupe, M.D., 2011: Clouds at Arctic Atmospheric Observatories, Part II: Thermodynamic phase characteristics. J. Appl. Meteor. Clim., 50, 645-661.

Shupe, M.D., V.P. Walden, E. Eloranta, T. Uttal, J.R. Campbell, S.M. Starkweather, and M. Shiobara, 2011: Clouds at Arctic Atmospheric Observatories, Part I: Occurrence and macrophysical properties. J. Appl. Meteor. Clim., 50, 626-644

 

Experts

Matthew Shupe | Summit, Eureka, Barrow

Von Walden | Summit

David Turner | Summit, Barrow

Ed Eloranta |

Tom Duck | Eureka

???????????? | Ny-Ålesund

???????????? | Tiksi, Russian Drift Station