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Summary
Updated solar irradiance reconstruction. (See also Lean et al., 1995).
Included are time series of annual mean irradiance from 1610 to 2000
of just the 11 year solar irradiance cycle, plus the 11 year
cycle with a background component. See Lean (2000) for discussion of
the amplitude of the background component.

Because of the dependence of the Sun's ... irradiance on solar activity,
reductions from contemporary levels are expected during the
seventeenth century Maunder Minimum. New reconstructions of spectral
irradiance are developed since 1600 with absolute scales traceable to
spacebased observations. The long-term variations track the envelope
of group sunspot numbers and have amplitudes consistent with the range
of Ca II brightness in Sun-like stars. Estimated increases since 1675
are 0.7%, 0.2% and 0.07% in broad ultraviolet, visible/near infrared
and infrared spectral bands, with a total irradiance increase of 0.2%.

Related URL

Link: GET DATA Description: Access to documentation and data for Lean 2000 solar irradiance reconstruction

Geographic Coverage Spatial coordinates   

N: 90.0

S: -90.0

E: 180.0

W: -180.0

Data Set Citation

Dataset Creator: Lean, J. Dataset Title: Solar Irradiance Reconstruction Dataset Series Name: GBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2004-035 Dataset Release Date: July 2004 Dataset Release Place: Boulder, CO Dataset Publisher: IGBP PAGES/World Data Center for Paleoclimatology Issue Identification: 2004-035 Online Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/climate_forcing/solar_variab...

Temporal Coverage

Start Date: 1610-01-01 Stop Date: 2000-12-31

Paleo Temporal Coverage

Paleo Start Date: 400 ybp Paleo Stop Date: 0 ybp Chrono Unit: PHANEROZOIC  >  CENOZOIC  >  QUATERNARY  >  HOLOCENE

Location Keywords

GEOGRAPHIC REGION > GLOBAL

Data Resolution

Temporal Resolution: yearly

Science Keywords

ATMOSPHERE > ATMOSPHERIC RADIATION > SOLAR IRRADIANCE SUN-EARTH INTERACTIONS > SOLAR ACTIVITY > SOLAR IRRADIANCE

ISO Topic Category

CLIMATOLOGY/METEOROLOGY/ATMOSPHERE GEOSCIENTIFIC INFORMATION

Project

PAGES > Past Global Changes, IGBP

Ancillary Keywords

solar constant solar irradiance paleoclimate Maunder Minimum solar irradiance reconstruction

Data Set Progress

COMPLETE

Originating Center

NOAA/NCDC

Data Center

World Data Center for Paleoclimatology, Boulder Data Center URL: http://www.ncdc.noaa.gov/paleo/ Data Center Personnel Name: WDC/PALEOCLIMATOLOGY, BOULDER Phone: +1 (303) 497-6160 Fax: +1 (303) 497-6513 Email: paleo at noaa.gov Contact Address: World Data Center for Paleoclimatology NOAA/NCDC Code E/GCx3 325 Broadway City: Boulder Province or State: CO Postal Code: 80303 Country: USA

Distribution

Distribution Media: online www Distribution Format: ascii Fees: none

Personnel

JUDITH LESLEY LEAN Role: INVESTIGATOR Phone: 202-767-5116 Fax: 202-404-7997 Email: jlean at ssd5.nrl.navy.mil Contact Address: Code 7673L Naval Research Laboratory City: Washington Province or State: DC Postal Code: 20375 Country: USA

Publications/References
Lean, J. 2000. Evolution of the Sun's Spectral Irradiance Since the Maunder
Minimum. Geophysical Research Letters, Vol. 27, No. 16, pp. 2425-2428, Aug.
15, 2000.

Lean, J., J. Beer, and R. Bradley. 1995. Reconstruction of Solar Irradiance
Since 1610: Implications for Climate Change. Geophysical Research Letters,
v.22, No. 23, pp 3195-3198, December 1, 1995.

Creation and Review Dates

DIF Creation Date: 2004-09-17 Last DIF Revision Date: 2004-09-17

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