The Nimbus-7 Earth Radiation Budget (ERB) Compact Solar Data SetEntry ID: NIMBUS7_ERB_SOLAR
Abstract: The Nimbus-7 Earth Radiation Budget (ERB) experiment recorded the
total solar irradiance from November 16, 1978 through December 1993.
A compact solar dataset has been prepared containing calibrated solar
irradiance plus original solar measurements and calibration
information. Originally the solar measurements were mixed with ERB
terrestrial measurements and were scattered over hundreds of ... computer
tapes. The collected, compact solar dataset consists of 16 magnetic
tapes (38,000 bpi, 3480 IBM cartridges) plus eight high-density PC
diskettes. The compact solar dataset is divided into two segments:
1) The Summary Solar Tapes (SST) on 14 magnetic tapes. These contain
all of the raw solar counts from the 10 solar sensors plus a
preliminary solar calibration.
2) The Channel 10c Solar Tapes (CST) on 2 magnetic tapes. These tapes
duplicate the raw channel 10c counts and housekeeping data on the SST.
3) The final set of data reside on PC diskettes. These consist of
processed channel 10c data including channel 10c electrical
calibration (one PC diskette); mean orbital counts and accurate
Earth/Sun distances for each observation on five PC diskettes;
calibrated orbital solar irradiances on two PC diskettes; and mean
averaged solar irradiances on one PC diskette.
The Nimbus-7 ERB was designed to measure the total irradiance from the
Sun, the Earth's reflected radiation, and the thermal radiation
emitted by the Earth. The solar optical system consists of 10 solar
sensors, but only seven real spectral bands. Channels 1 and 2 are
similar to the Earth viewing channels; channels 3 and 10c are broad
spectral channels; and channels 4 to 9 are a series of overlapping
spectral bands. Data from channels 1 through 9 have not been widely
used because of uncertainties in the in-flight characteristics of
The ERB measured the total irradiance from the Sun from November 1978
through December 1993 and found that the Sun was about 0.1% brighter
in 1979-81 and 1990-92 than in 1984-86. The Sun's broad energy output
varies in phase with its 10-11 year sunspot cycle. The ERB
measurements also showed decreases in the solar irradiance
corresponding to the presence sunspots.
This dataset supersedes the previously published ERB Solar Analysis
Tape (ESAT). [NSSDC dataset_ID: 78-098A-07L and the Channel 10c data
Data Set Citation
Dataset Originator/Creator: NASA/GSFC Ozone Processing Team
Dataset Title: The Nimbus-7 Earth Radiation Budget (ERB) Compact Solar Data SetOnline Resource: http://toms.gsfc.nasa.gov/n7toms/nim7toms_v8.html
Start Date: 1978-11-16Stop Date: 1993-01-25
ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR IRRADIANCE
ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR RADIATION
SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR ACTIVE REGIONS
SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR IRRADIANCE
SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR ULTRAVIOLET EMISSIONS
SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SUNSPOTS
Role: TECHNICAL CONTACT
Email: gsfc-help-disc at lists.nasa.gov
Goddard Earth Sciences Data and Information Services Center Code 610.2 NASA Goddard Space Flight Center
Province or State: MD
Postal Code: 20771
Role: DIF AUTHOR
Email: gsfc-gcmduso at mail.nasa.gov
Lean, J. 1991. "Variations in the Sun's Radiative Output",
Rev. Geophys., Vol. 29, pp. 505-535.
Hoyt, D.V., H.L. Kyle, J.R. Hickey, and R.H. Maschhoff. 1992. "The
Nimbus-7 Total Solar Irradiance: A New Algorithm for its Derivation",
J. Geophys. Res.-A, Vol. 97, pp. 51-63.
Kyle, H.L., J.R. Hickey, P.E. Ardanuy, H. Jacobowitz, A. Arking,
G.G. Campbell, F.B. House, R. Maschhoff, G.L. Smith, L.L. Stowe, and
T. Vonder Haar. 1993. "The Nimbus Earth Radiation Budget (ERB)
Experiment: 1975-1992", Bull. Amer. Meteor. Soc., Vol. 74,
Kyle, H.L., D.V. Hoyt, J.R. Hickey, R.H. Maschhoff, and
B.J. Valette. 1993. "Nimbus-7 Earth radiation Budget Calibration
History - Part I: The Solar Channels", NASA Reference Publication
1316, NASA, Washington, D.C., 80 pp.
Kyle, H.L., L.M. Penn, D. Hoyt, D. Love, S. Vemury, and
B.J. Valette. 1994. "Nimbus-7 Earth radiation Budget Compact Solar
Data Set User's Guide", NASA Reference Publication 1346, NASA,
Washington, D.C., 50 pp.
Creation and Review Dates
Last DIF Revision Date: 2005-01-07