title: Rocket calibration of the Nimbus 6 solar constant measurements.
abstract: Total solar irradiance was observed simultaneously outside the earth's atmosphere by three types of absolute cavity radiometers and duplicates of four of the Nimbus 6 Earth Radiation Budget (ERB) solar channels in a June 1976 Sounding Rocket Experiment. The preliminary average solar constant result from the cavity radiometers is 1367 W m(-2) with an uncertainty of less than +/-0.5% in SI units. The duplicate ERB channel 3 on the rocket gave a value of 1389 W mm(-2) which agreed exactly with the Nimbus 6 ERB channel 3 measurement made simultaneously with the rocket flight. Therefore, Nimbus 6 ERB solar constant values should be reduced approximately 1.6% in order to convert the values to SI units.
authors.forename: C H
authors.initials: CH
authors.lastname: Duncan
authors.forename: R G
authors.initials: RG
authors.lastname: Harrison
authors.forename: J R
authors.initials: JR
authors.lastname: Hickey
authors.forename: J M
authors.initials: JM
authors.lastname: Kendall
authors.forename: M P
authors.initials: MP
authors.lastname: Thekaekara
authors.forename: R C
authors.initials: RC
authors.lastname: Willson