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The Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems Campaign: Measurement Strategy and Preliminary Findings

 
Poster PDF

Authors

Jerome D Fast — Pacific Northwest National Laboratory
Larry Berg — Pacific Northwest National Laboratory
Beat Schmid — Pacific Northwest National Laboratory
Lizabeth M Alexander — Pacific Northwest National Laboratory
David Bell — Paul Scherrer Institute
John Hubbe — Pacific Northwest National Laboratory
Rodica Lindenmaier — Pacific Northwest National Laboratory
Jiumeng Liu — Pacific Northwest National Laboratory
Fan Mei — Pacific Northwest National Laboratory
Mikhail S. Pekour — Pacific Northwest National Laboratory
Tamara Pinterich — Brookhaven National Laboratory
Siegfried Schobesberger — University of Eastern Finland
John E Shilling — Pacific Northwest National Laboratory
James Smith — University of California, Irvine
Stephen R. Springston — Brookhaven National Laboratory
Joel Thornton — University of Washington
Jason Tomlinson — Pacific Northwest National Laboratory
Jian Wang — Washington University in St. Louis
Alla Zelenyuk-Imre — Pacific Northwest National Laboratory

Category

Warm low clouds, including aerosol interactions

Description

We describe the overall measurement strategy and preliminary findings from the Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE) campaign that will be conducted in May and September of 2016 in the vicinity of DOE’s Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site. Current shallow and deep convective cloud parameterizations contain uncertainties resulting from insufficient coincident data that couples cloud macrophysical and microphysical properties to inhomogeneity in land use and ecosystems, boundary-layer turbulence, and aerosol properties. Rather than targeting specific processes as has been done in previous campaigns, the goal of the HI-SCALE campaign is to provide a detailed set of aircraft and surface measurements needed to obtain a more complete understanding and improved parameterizations of the life cycle of shallow clouds. We present a preliminary analysis that couples the aircraft measurements with extensive routine ARM SGP measurements to examine data consistency and variability over the SGP site. In addition, HI-SCALE data will be used to evaluate preliminary Large-Eddy Simulation (LES) and cloud-system-resolving model simulations. Ultimately, these integrated analyses and modeling studies will shed light on the effects of inhomogeneity in land use, vegetation, soil moisture, convective eddies, and aerosol properties (size distribution, composition, mixing state) on the evolution of shallow clouds. This includes the feedbacks of cloud radiative effects on the surface heat, moisture, and momentum fluxes and on aerosol photochemical processes via changes in the downwelling radiation.