noaa-model-6103
Crowley 2000 Causes of Climate Change Over the Past 1000 Years
Crowley, T.J.
Crowley 2000 Causes of Climate Change Over the Past 1000 Years
2000-07-14
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/6103
Investigator
T.J.
Crowley
earth science
paleoclimate
climate forcing
volcanic forcing,null,null,watt per square meter,null,climate forcing,null,null,N,null
earth science
paleoclimate
climate forcing
solar irradiance,null,null,watt per square meter,null,climate forcing,null,null,N,C14 Bard/Lean splice
earth science
paleoclimate
paleoclimatic modeling
temperature,null,null,degree Celsius,null,paleoclimatic modeling,anomalized,null,N,response to all forcings calculated at a sensitivity of 2.0°C for a doubling of CO2
earth science
paleoclimate
paleoclimatic modeling
age,null,null,year Common Era,null,paleoclimatic modeling,null,null,N,null
earth science
paleoclimate
climate forcing
anthropogenic aerosol forcing,null,null,watt per square meter,null,climate forcing,null,null,N,null
earth science
paleoclimate
climate reconstructions
temperature,null,null,degree Celsius,null,climate reconstructions,smoothed,null,N,Crowley and Lowery Northern Hemisphere time series spliced onto smoothed Jones instrumental time series
earth science
paleoclimate
paleoclimatic modeling
temperature,null,null,degree Celsius,null,paleoclimatic modeling,anomalized,null,N,response to solar forcing (Be10) calculated at a sensitivity of 2.0°C for a doubling of CO2
earth science
paleoclimate
climate reconstructions
temperature,null,null,degree Celsius,null,climate reconstructions,smoothed,null,N,11-point smoothed Mann et al. Northern Hemisphere time series
earth science
paleoclimate
climate reconstructions
temperature,null,null,degree Celsius,null,climate reconstructions,null,null,N,slight modification to original Crowley and Lowery series
earth science
paleoclimate
paleoclimatic modeling
temperature,null,null,degree Celsius,null,paleoclimatic modeling,anomalized,null,N,response to solar forcing (14C Stv) calculated at a sensitivity of 2.0°C for a doubling of CO2
earth science
paleoclimate
climate forcing
solar irradiance,null,null,watt per square meter,null,climate forcing,null,null,N,Be10/Lean splice
earth science
paleoclimate
paleoclimatic modeling
temperature,null,null,degree Celsius,null,paleoclimatic modeling,anomalized,null,N,response to greenhouse gas forcing calculated at a sensitivity of 2.0°C for a doubling of CO2
earth science
paleoclimate
climate forcing
age,null,null,year Common Era,null,climate forcing,null,null,N,null
earth science
paleoclimate
paleoclimatic modeling
temperature,null,null,degree Celsius,null,paleoclimatic modeling,anomalized|smoothed,null,N,response to volcanic and solar (14C Bard) forcing calculated at a sensitivity of 2.0°C for a doubling of CO2
earth science
paleoclimate
paleoclimatic modeling
temperature,null,null,degree Celsius,null,paleoclimatic modeling,anomalized,null,N,response to volcanic forcing calculated at a sensitivity of 2.0°C for a doubling of CO2
earth science
paleoclimate
climate forcing
solar irradiance,null,null,watt per square meter,null,climate forcing,null,null,N,C14 resid/Lean splice
earth science
paleoclimate
climate forcing
greenhouse gas forcing,null,null,watt per square meter,null,climate forcing,null,null,N,carbon dioxide
earth science
paleoclimate
climate reconstructions
age,null,null,year Common Era,null,climate reconstructions,null,null,N,null
earth science
paleoclimate
climate reconstructions
temperature,null,two standard deviations,degree Celsius,null,climate reconstructions,smoothed,null,N,11-point smoothed Mann et al. Northern Hemisphere time series; adjusted for autocorrelation
earth science
paleoclimate
paleoclimatic modeling
temperature,null,null,degree Celsius,null,paleoclimatic modeling,anomalized,null,N,response to solar forcing (14C Bard) calculated at a sensitivity of 2.0°C for a doubling of CO2
earth science
paleoclimate
paleoclimatic modeling
temperature,null,null,degree Celsius,null,paleoclimatic modeling,anomalized,null,N,response to tropospheric aerosol forcing calculated at a sensitivity of 2.0°C for a doubling of CO2
earth science
paleoclimate
model
geoscientificInformation
Air Temperature Reconstruction
1000 AD
1998 AD
950 cal yr BP
-48 cal yr BP
Complete
-90
90
-180
180
Geographic Region
Global
Global>LATITUDE >LONGITUDE
None
Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Crowley, T.J. 2000. Causes of Climate Change Over the Past 1000 Years. Science, 289(5477), 270-277. doi:10.1126/science.289.5477.270.
Recent reconstructions of Northern Hemisphere temperatures and climate forcing over the past 1000 years allow the warming of the 20th century to be placed within a historical context and various mechanisms of climate change to be tested. Comparisons of observations with simulations from an energy balance climate model indicate that as much as 41 to 64% of preanthropogenic (pre-1850) decadal-scale temperature variations was due to changes in solar irradiance and volcanism. Removal of the forced response from reconstructed temperature time series yields residuals that show similar variability to those of control runs of coupled models, thereby lending support to the models' value as estimates of low-frequency variability in the climate system. Removal of all forcing except greenhouse gases from the ?1000-year time series results in a residual with a very large late-20th-century warming that closely agrees with the response predicted from greenhouse gas forcing. The combination of a unique level of temperature increase in the late 20th century and improved constraints on the role of natural variability provides further evidence that the greenhouse effect has already established itself above the level of natural variability in the climate system. A 21st-century global warming projection far exceeds the natural variability of the past 1000 years and is greater than the best estimate of global temperature change for the last interglacial.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/gcmoutput/crowley2000/readme_crowley2000.txt
Data Descripton; Crowley 2000 Readme File
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/gcmoutput/crowley2000/
Data Folder; Crowley 2000 Data File Folder
USA/NOAA
DIF
Version 9.8.4
2019-06-18
2019-06-18