Description of the files in this directory

aerosol.dat : Crowley (2000) historical NH mean aerosol forcing (assumed 
constant after 1998).  Data from 1870-2012.  First column is year,
second column is forcing in Wm^-2, third column is 2-sigma uncertainty.

BEST_annual_nh.dat: Berkeley Earth (BEST) temperature record.  Data from 
1750-2011. First column is year, second column is temperature anomaly in 
degrees C.

co2.dat: Ammann et al. (2007) CO2 data (updated for past decade from Mauna Loa).  Data from
850-2012.  First column year, second column CO2 concentration in ppm.


Instrumental Northern Hemispheric Mean Surface Temperatures from NASA/GISS
GISTEMP2013_NH.dat: 1880-2013
GISTEMP_NH.dat: 1880-2012
First column year, second column temperature anomaly in degrees C.

Instrumental Northern Hemispheric Mean Surface Temperatures from the Hadley 
Centre:
HadCRUT4_annual2013_nh.dat: 1850-2013
HadCRUT4_annual_nh.dat: 1850-2012
First column year, second column temperature anomaly in degrees C.

solar.dat : Solar forcing for 850-2012 from Ammann et al. 2007. First column year, second column 
solar constant in Wm^-2.

Three different volcanic forcing datasets (850-2012):
volcanic-ammann.dat: spans 850-1999, first column year, second column 
volcanic forcing.  From Ammann et al. 2007.

volcanic-crowley.dat: from Crowley (2000).  Spans 1000-1998. First column year, 
second column volcanic forcing.

volcanic-robock.dat: Gao et al (2008) IVI series.  Spans 501-2000.  
Columns:
1: Year (A.D.)
2: NH stratospheric sulfate aerosol injection (Tg)
3: SH stratospheric sulfate aerosol injection (Tg)
4: Global total stratospheric sulfate aerosol injection (Tg)

Last Updated 27 Feb 2014