Atmospheric Radiation Measurement Climate Research Facility US Department of Energy

Marine ARM GPCI Investigation of Clouds (MAGIC): Shortwave Hyperspectral Observations

1 July 2013 - 30 September 2013

Lead Scientist: Patrick McBride

Observatory: AMF, MAG

One of the primary goals of the MAGIC campaign was to improve the understanding of the cumulus-to-stratocumulus transition. Using the shortwave hyperspectral observations of the Solar Spectral Flux Radiometer (SSFR), we retrieved cloud optical thickness and cloud effective particle radius, study the particles in the transition zone between cloud and cloudless skies, and worked to expand the spectral range of other aerosol retrievals being performed during MAGIC. The ship configuration of the SSFR measured zenith hyperspectral radiance from 350 nm to 1700 nm at a spectral resolution between 8 and 12 nm with a narrow field-of-view (2.8 degrees) collimator as entrance optics. Cloud retrieval algorithms developed to utilize both hyperspectral and multichannel observations were used for cloud property retrievals. Between the clouds, the cloud transition zone was studied with a new algorithm developed for use with shortwave hyperspectral observations. The cloud transition zone can have a significant impact on radiative forcing, particularly when the lines of classification between cloud and aerosol are blurred and are active regions of aerosol and cloud interactions. Finally, in concert with the High Spectral Resolution Lidar (HSRL) which is also deployed on the ship, SSFR data can be used to constrain the aerosol single scattering albedo and asymmetry parameter (based on an algorithm that is currently being developed) and to derive the column-integrated water vapor. The combination of cloud, aerosol, and water vapor information will be valuable in understanding the cumulus-to-stratocumulus transition.


J.-Y. Christine Chiu
Warren Gore
Alexander Marshak
Sebastian Schmidt
Warren Wiscombe

Related Publications


Reynolds RM and E Lewis. 2016. Marine ARM GPCI Investigation of Clouds Bridge Display Field Campaign Report. Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-16-048.

Reynolds RM and E Lewis. 2016. Marine ARM GPCI Investigation of Clouds Psychrometer Field Campaign Report. Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-16-049.

McBride PJ, W Yang, and A Marshak. 2016. Shortwave Hyperspectral Observations during MAGIC Final Campaign Summary. DOE ARM Climate Research Facility. DOE/SC-ARM-15-074.


Zhou X, P Kollias, and ER Lewis. 2015. "Clouds, Precipitation, and Marine Boundary Layer Structure during the MAGIC Field Campaign." Journal of Climate, 28(6), 10.1175/jcli-d-14-00320.1.


Mather J. 2014. 2013 Annual Report. Ed. by Sarah Shoemaker, DOE ARM Climate Research Facility. DOE/SC-ARM-13-023.

View All Related Publications

Campaign Data Sets

IOP Participant Data Source Name Final Data
Patrick McBride Solar Spectral Flux Radimeter Order Data

MAG Data Sources

Name Full Name Browse Data
AOS Aerosol Observing System Browse Data
AOSMET Meteorological Measurements associated with the Aerosol Observing System Browse Data
ASSIST Atmospheric Sounder Spectrometer for Infrared Spectral Technology Browse Data
CCN Cloud Condensation Nuclei Particle Counter Browse Data
CEIL Ceilometer Browse Data
CPC Condensation Particle Counter Browse Data
HSRL High Spectral Resolution Lidar Browse Data
HTDMA Humidified Tandem Differential Mobility Analyzer Browse Data
IRT Infrared Thermometer Browse Data
KAZR Ka ARM Zenith Radar Browse Data
LDIS Laser Disdrometer Browse Data
MET Surface Meteorological Instrumentation Browse Data
MPL Micropulse Lidar Browse Data
MPLCMASK Cloud mask from Micropulse Lidar Browse Data
MWACR Marine W-Band (95 GHz) ARM Cloud Radar Browse Data
MWR Microwave Radiometer Browse Data
MWR3C Microwave Radiometer, 3 Channel Browse Data
NAV Navigational Location and Attitude Browse Data
NEPHELOMETER Nephelometer Browse Data
OZONE Ozone Monitor Browse Data
PBLHT Planetary Boundary Layer Height Browse Data
PRP Portable Radiation Package Browse Data
PSAP Particle Soot Absorption Photometer Browse Data
RWP Radar Wind Profiler Browse Data
SASZE Shortwave Array Spectroradiometer-Zenith Browse Data
SONDE Balloon-Borne Sounding System Browse Data
S-TABLE Stabilized Platform Browse Data
TSI Total Sky Imager Browse Data
UHSAS Ultra-High Sensitivity Aerosol Spectrometer Browse Data
VISST Minnis Cloud Products Using Visst Algorithm Browse Data