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Net Flux Radiometer (SNFR)

NSSDCA ID: 1978-078E-04

Mission Name: Pioneer Venus Small Probe (North)
Principal Investigator:Dr. Verner E. Suomi


The objectives were to locate regions of radiative convergence and divergence as a function of altitude and to indicate the height at which solar energy is absorbed by the atmosphere. This experiment used a small net flux radiometer on the Probe targeted to the dayside of Venus to measure the net solar flux in the 0.2- to 4-micrometer region. The two Probes targeted to the nightside of the planet carried net infrared flux sensors covering the 1- to 25-micrometer region. The instrument weighed about 0.4 kg and used 2.2 W of power.

Alternate Names

  • PioneerVenusSmallProbeNorth/SNFR
  • SNFR

Facts in Brief

Mass: 0.4 kg
Power (avg): 2.2 W

Funding Agency

  • NASA-Office of Space Science (United States)


  • Planetary Science: Atmospheres

Additional Information

Questions and comments about this experiment can be directed to: Dr. David R. Williams



NameRoleOriginal AffiliationE-mail
Dr. Lawrence A. SromovskyOther InvestigatorUniversity of
Dr. Jacqueline LenobleOther InvestigatorUniversite
Mr. G. Edward Danielson, Jr.Other InvestigatorCalifornia Institute of
Dr. Maurice HermanOther InvestigatorUniversite
Dr. Alain L. FymatOther InvestigatorNASA Jet Propulsion
Dr. Verner E. SuomiPrincipal InvestigatorUniversity of Wisconsin-Madison
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