Campaign : Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE)

2016.04.24 - 2016.09.23

Lead Scientist : Jerome Fast

For data sets, see below.

Abstract

Cumulus convection is an important component in the atmospheric radiation budget and hydrologic cycle over the southern Great Plains and many other regions of the world, particularly during the summertime growing season when intense turbulence induced by surface radiation couples the land surface to clouds. Current convective cloud parameterizations contain uncertainties resulting partly from insufficient coincident data that couple cloud macrophysical and microphysical properties to inhomogeneities in boundary layer and aerosol properties.

The Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE) field campaign was designed to provide a detailed set of measurements needed for a more complete understanding of the life cycle of shallow clouds by coupling cloud macrophysical and microphysical properties to land surface properties, ecosystems, and aerosols. HI-SCALE consisted of two four-week intensive observational periods, one in the spring and the other in the late summer to take advantage of different stages and distribution of greenness for various vegetation near the ARM Climate Research Facility's Southern Great Plains Megasite (SGP), as well as aerosol properties that vary during the growing season. Most of the instruments were deployed on the ARM Aerial Facility (AAF) Gulfstream-159 (G-1) aircraft, including those that measure atmospheric turbulence, cloud water content and drop size distributions, aerosol precursor gases, aerosol chemical composition and size distributions, and cloud condensation nuclei concentrations. Aerosol microphysical property measurements supplemented routine ARM aerosol measurements made at the surface. The G-1 completed transects over the SGP Central Facility at multiple altitudes within the boundary layer, and within and above clouds.

The extensive measurements collected during the campaign will be coupled with routine ARM SGP measurements as well as large-eddy simulation (LES), cloud-resolving, and cloud-system-resolving models. Through integrated analyses and modeling studies, scientists will be able to quantify the influence of inhomogeneities in land use, vegetation, soil moisture, convective eddies, and aerosol properties on the evolution of shallow clouds. This includes the feedbacks of clouds on the downwelling radiation reaching the surface and associated changes in the surface heat, moisture, and momentum fluxes, and on aerosol photochemical processes.

Findings from the data analyses and modeling studies will be used to develop improved parameterizations for the next generation of climate models that are expected to have grid spacing of approximately 10 kilometers. In addition, the aircraft and surface measurements provided critical in situ measurements of the boundary layer, cloud microphysics and dynamics, and aerosol properties that can be used to evaluate the new routine LES modeling activity at the SGP site and various current and new ARM retrievals.

Campaign periods:

2016.04.24--2016.05.21

2016.08.28--2016.09.23

Other Contacts

Co-Investigators
Larry Berg
Jiwen Fan
Zhe Feng
Pierre Gentine
Mary Gilles
Alex Guenther
Samson Hagos
Maoyi Huang
Chongai Kuang
Alexander Laskin
Ryan Moffet
Arthur Sedlacek
John Shilling
Manishkumar Shrivastava
James Smith
Joel Thornton
David Turner
Jian Wang
Alla Zelenyuk-Imre


Campaign Data Sets

IOP ParticipantData Source DescriptionFinal Data
Mei2DS Particle Imaging Probe Order Data
MatthewsVideo Order Data
MeiCloud Condensation Nuclei Counter Order Data
TomlinsonCloud Spectrometer and Impactor (CSI) Order Data
SchobesbergerTime of Flight Chemical Ionization Mass Spectrometer Order Data
MatthewsHigh Volume Precipitation Spectrometer - Images Order Data
MeiCondensation Particle Counter (CVI inlet) Order Data
TomlinsonUltra High Sensitivity Aerosol Spectrometer Order Data
MatthewsWater Content Monitor Order Data
LongRadiometer Suite (Tilt Corrected Data) Order Data
SpringstonTrace Gases Order Data
TomlinsonCloud and Aerosol Spectrometer (CAS) Order Data
Zelenyuk-ImreSingle Particle Mass Spectrometer (Ground) Order Data
MatthewsCloud Droplet Probe Order Data
Matthews2DS Probe - Images Order Data
TomlinsonCloud Imaging Probe Order Data
ShillingProton Transfer Reaction Mass Spectrometer Order Data
MeiFast Cloud Droplet Probe (FCDP) Order Data
MeiMeteorology/State/Position Parameters Order Data
ShillingAerosol Mass Spectrometer Order Data
TomlinsonPassive Cavity Aerosol Spectrometer Order Data
WangFast Integrated Mobility Spectrometer Order Data
PekourOptical Particle Counter - Isokinetic Order Data
ShillingScanning Mobility Particle Sizer (Ground) Order Data
HubbeAircraft-Integrated Meteorological Measurement System Order Data
ShillingNO/NOx Analyzer Order Data
Zelenyuk-ImreMini Single Particle Mass Spectrometer Order Data
MeiCondensation Particle Counter Order Data
PekourOptical Particle Counter - Counterflow Virtual Impactor Order Data
MeiHigh Volume Precipitation Spectrometer Order Data
PekourCounterflow Virtual Impactor (CVI) Order Data

Additional Data Sets

IOP ParticipantData Source DescriptionFinal Data
KalukinCalibration Objects - Lat/Long Order Data
KalukinData Logger and Radiometer Order Data
KalukinImaging Sensors Order Data