FORCING: SUPPLEMENTARY INFORMATION AVAILABLE FOR DOWNLOAD

Download Natural Forcing Data Pack
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Data Pack Contents

Albedo

01-Average albedo.gif Figure “Average albedo by latitude”
02-Monthly albedo.gif Figure “Average monthly terrestrial albedo”
03-Albedo difference.gif Figure “Seasonal difference in albedo”
AveAlbedo.csv File used to produce figure “Average monthly terrestrial albedo”. The file has average albedo values based on the calendar years 1986 to 1989. The values are average albedo on a 5 degree grid for the whole world (with some gaps near the poles) and a separate column of the average for each latitude. The file has 77 rows, 146 columns and contains 10125 non-blank items.
DiffAlbedo.csv File used to produce figure “Seasonal albedo”. For each calendar month from 1986 to 1989 the albedo was averaged of all longitudes for each latitude. The values in the file are maximum difference in albedo for each latitude. The file has 2 columns, 77 rows and 131 non-blank items.
Monthly albedo.csv
File used to produce figure “Average albedo by latitude”. The file contains average albedo values for each calendar month from 1986 to 1989. Date is given in two formats to facilitate plotting. The file has 4 columns, 52 rows and 192 non-blank items.

Milankovitch Cycles

01-Milankovitch - cycles.gif Figure “Insolation – different periods and areas”
01a – Milankovitch – cycles- global.gif Figure “Milankovitch cycles – whole earth – whole year
02-Milankovitch and temperature.gif Figure “Milankovitch cycles and temperature from the Vostok Ice-core”
03-Percentage of land.gif Figure “Percentage of earth’s area in latitude bands”
04-Seasonal difference in Albedo.gif Figure “Seasonal difference in Albedo”
AreasBands.csv
Figure “Percentage of earth’s area in latitude bands.” The file has 2 columns, 20 rows and 40 non-blank items.
DiffAlbedo.csv File used to produce figure “Seasonal albedo”. For each calendar month from 1986 to 1989 to albedo was averaged of all longitudes for each latitudes. The values in the file are maximum difference in albedo for each latitude. The file has 2 columns, 77 rows and 131 non-blank items.
Milankovitch-Insolation-July.csv File used to produce figure “Insolation – different periods and areas”. The data start in 799900 BP. The data include radiation at 65 N for July, annual radiation at 65 N, annual radiation over whole earth by simple averaging and annual radiation over whole earth by cosine-weighted averaging. The file has 7 columns, 8005 rows and 41602 non-blank items.
orbital time-tpt-inc.csv File used to produce figure “Figure “Milankovitch cycles and temperature from the Vostok Ice-core”. The data include temperature and radiation at 65 N from 25000 BP. The file has 3 columns, 2506 rows and 7432 non-blank item.

Sunspots

SunspotData.csv A single file combining sunspot numbers, total solar irradiance, cosmic radiation and radio flux
butterfly.csv File with date, latitude and percentage of 109000 rows and 328000 non-blank items.

Radio-Sonde

01-Hadley radio-sonde temperature.gif Figure “Annual temperature anomaly with atmospheric pressure”
02-Atmos-temp-IPCC.gif Figure “TAR 2007, Figure 9.1 (f)”
03-Atmos-temp-01b.gif Figure “Atmospheric temperature change – 1958-2008”
04-Atmos-temp-CCSP.gif Figure “Temperature Trends in the Lower Atmosphere”
Had-radio-sonde-annual.csv The file was used for the figure “Annual temperature anomaly with atmospheric pressure”. It has annual data from 1958 to 2008 for 6 values of pressure, 850hPa, 700hPa, 500hPa, 300hPa, 200hPa, 150hPa, 100hPa, 50hPa and 30hPa. The file has 10 columns, 57 rows and 510 non-blank items.
Had-radio-sonde-annual.csv The file was used to process the data for the figure “Annual temperature anomaly with atmospheric pressure”. It has monthly data from 1958 to 2008 for 6 values of pressure, 850hPa, 700hPa, 500hPa, 300hPa, 200hPa, 150hPa, 100hPa, 50hPa and 30hPa. The file has 12 columns, 617 rows and 7344 non-blank items.