Integrated Characterization of Energy, Clouds, Atmospheric State, and Precipitation at Summit (ICECAPS)

The Integrated Characterization of Energy, Clouds, Atmospheric state, and Precipitation at Summit (ICECAPS) is an extended field campaign that has expanded the Arctic Observing Network (AON) by adding cloud, atmosphere, precipitation, aerosol, and surface energy budget measurements, and associated higher-order data products, to Summit, Greenland, at the top of the Greenland Ice Sheet. The instrument suite consists of a cloud radar, two microwave radiometers, an Atmospheric Emitted Radiance Interferometer, an X-band precipitation sensor, a ceilometer, a micropulse lidar, a meteorological flux tower, a radiation suite, aerosol samplers, and a radiosonde program. Measurements from this advanced suite of instruments, combined with other ongoing measurements at Summit, serve as climatical baseline geophysical data products to support Greenland-specific and Arctic-wide research. During parts of the last two years of the project, an additional suite of instruments was constructed and deployed near the DYE-2 site, providing measurements in a domain that is distinct from Summit.

The project has gone through four funding cycles. The first two established the basic observations and were a collaboration between Washington State University, the University of Idaho, the University of Colorado, the University of Wisconsin, the University of Oklahoma, funded by the US National Science Foundation. The third funding cycle saw the addition of new instrumentation (like aerosol and surface energy budget measurements) via a new collaborative partnership with the University of Leeds (UK), funded by the UK Natural Environmental Research Council. The fourth funding cycle added a remote measurement site with some new measurements of surface and subsurface properties, and added new collaborators from Dartmouth College and Boise State University.

Additional ICECAPS data is available via the Centre for Environmental Data Analysis (CEDA) Archive at:

[https://catalogue.ceda.ac.uk/uuid/65eaacda00a244328b944a1b76fbfd4f/](https://catalogue.ceda.ac.uk/uuid/65eaacda00a244328b944a1b76fbfd4f/)

and

[https://catalogue.ceda.ac.uk/uuid/70c96882916149658752b2b123931a5d/](https://catalogue.ceda.ac.uk/uuid/70c96882916149658752b2b123931a5d/)