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IceCube: CubeSat 883-GHz Radiometry for Future Ice Cloud Remote SensingIce clouds play a key role in the Earth's radiation budget, mostly through their strong regulation of infrared radiation exchange. Accurate observations of global cloud ice and its distribution have been a challenge from space, and require good instrument sensitivities to both cloud mass and microphysical properties. Despite great advances from recent spaceborne radar and passive sensors, uncertainty of current ice water path (IWP) measurements is still not better than a factor of 2. Submillimeter (submm) wave remote sensing offers great potential for improving cloud ice measurements, with simultaneous retrievals of cloud ice and its microphysical properties. The IceCube project is to enable this cloud ice remote sensing capability in future missions, by raising 874-GHz receiver technology TRL from 5 to 7 in a spaceflight demonstration on 3-U CubeSat in a low Earth orbit (LEO) environment. The NASAs Goddard Space Flight Center (GSFC) is partnering with Virginia Diodes Inc (VDI) on the 874-GHz receiver through its Vector Network Analyzer (VNA) extender module product line, to develop an instrument with precision of 0.2 K over 1-second integration and accuracy of 2.0 K or better. IceCube is scheduled to launch to and subsequent release from the International Space Station (ISS) in mid-2016 for nominal operation of 28 plus days. We will present the updated design of the payload and spacecraft systems, as well as the operation concept. We will also show the simulated 874-GHz radiances from the ISS orbits and cloud scattering signals as expected for the IceCube cloud radiometer.
Document ID
20150021071
Document Type
Presentation
Authors
Wu, Dongliang (NASA Goddard Space Flight Center Greenbelt, MD United States)
Esper, Jaime (NASA Goddard Space Flight Center Greenbelt, MD United States)
Ehsan, Negar (NASA Goddard Space Flight Center Greenbelt, MD United States)
Johnson, Thomas (NASA Wallops Flight Facility Wallops Island, VA, United States)
Mast, William (NASA Wallops Flight Facility Wallops Island, VA, United States)
Piepmeier, Jeffery R. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Racette, Paul E. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
November 10, 2015
Publication Date
June 25, 2015
Subject Category
Earth Resources and Remote Sensing
Meteorology and Climatology
Instrumentation and Photography
Report/Patent Number
GSFC-E-DAA-TN25376
Meeting Information
Earth Science Technology Forum (ESTF) 2015(Pasadena, California)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
cloud ice remote sensing
IceCube
satellite retrieval

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