CCSM4 CMIP5 1850-2005 runs forcings information

(From the CMIP5 DRS specification)
Appendix 1.2 Controlled Vocabulary for Abbreviated Forcing Descriptors
The abbreviations in this table can be used to describe the different externally imposed forcing agents that are active in a given simulation. A forcing agent will show some secular variation due to prescribed changes in concentration or emissions (or in the case of land-use, and change in prescription of surface conditions). Sometimes the change will be due to emissions of a precursor species that relatively quickly becomes transformed into the forcing agent itself (e.g., transformation of SO2 emissions to sulfate aerosols). In CMIP5 output files these abbreviations are used in defining the global attribute named forcing.

Abbreviation	Forcing Description	Applicable to CCSM4	Abbreviation	Forcing Description	Applicable to CCSM4
Nat	natural forcing (a combination, not explicitly defined here, that might include, for example, solar and volcanic)	Y	Ant	anthropogenic forcing (a mixture, not explicitly defined here, that might include, for example, well-mixed greenhouse gases, aerosols, ozone, and land-use changes).	Y
GHG	well-mixed greenhouse gases (a mixture, not explicitly defined here)	Y	SD	anthropogenic sulfate aerosol, accounting only for direct effects	Y
SI	anthropogenic sulfate aerosol, accounting only for indirect effects	N	SA (= SD + SI)	anthropogenic sulfate aerosol direct and indirect effects	N
TO	tropospheric ozone	N	SO	stratospheric ozone	N
Oz (= TO + SO)	ozone (= tropospheric and stratospheric ozone)	Y	LU	land-use change	Y
Sl	solar irradiance	Y	Vl	volcanic aerosol	Y
SS	sea salt	Y	Ds	Dust	Y
BC	black carbon	Y	OC	organic carbon	Y
MD	mineral dust	Y	AA	anthropogenic aerosols (a mixture of aerosols, not explicitly defined here)	Y

CMIP5 experiment_id	Description	RIP code rNNi1pNN	piControl branch year	CMIP5 "forcings" attributes
				Sl (solar) W m-2	GHG (well-mixed greenhouse gases)					Vl (volcanic aerosols)	SS (sea salt)	Ds (dust)	SD (sulfate direct effect)	BC (black carbon)	MD (mineral dust)	OC (organic black carbon)	Oz (ozone)	LU (land use change)
				Sl (solar) W m-2	CO2 ppm	CH4 ppb	N2O ppb	F11 ppt	F12 ppt	Vl (volcanic aerosols)	SS (sea salt)	Ds (dust)	SD (sulfate direct effect)	BC (black carbon)	MD (mineral dust)	OC (organic black carbon)	Oz (ozone)	LU (land use change)
historical	all forcings active	r1i1p1	937	varying	varying					varying	varying	varying	varying	varying	varying	varying	varying	varying
		r2i1p1	1031
		r3i1p1	863
		r4i1p1	893
		r5i1p1	983
		r6i1p1	953
historicalNat	natural forcings only	r1i1p1	937	varying	287.725	790.979	275.425	33.432	0.000	varying	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled
		r2i1p1	1031
		r4i1p1	893
		r6i1p1	953
historicalGHG	GHG forcings only	r1i1p1	937	1360.895	varying					none	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled
		r4i1p1	893
		r6i1p1	953
historicalMisc	anthropogenic aerosols only	r1i1p10	937	1360.895	287.725	790.979	275.425	33.432	0.000	none	varying	varying	varying	varying	varying	varying	1850 cycled	1850 cycled
		r4i1p10	893
		r6i1p10	953
historicalMisc	anthropogenic forcings only	r1i1p11	937	1360.895	287.725	790.979	275.425	33.432	0.000	none	1850 cycled	varying	varying	varying	varying	varying	varying	varying
		r2i1p11	1031
		r4i1p11	893
		r6i1p11	953
historicalMisc	black carbon only	r1i1p12	937	1360.895	287.725	790.979	275.425	33.432	0.000	none	1850 cycled	1850 cycled	1850 cycled	varying	1850 cycled	1850 cycled	1850 cycled	1850 cycled
historicalMisc	land-use change only	r1i1p13	937	1360.895	287.725	790.979	275.425	33.432	0.000	none	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	varying
		r3i1p13	863
		r6i1p13	953
historicalMisc	ozone forcing only	r1i1p14	937	1360.895	287.725	790.979	275.425	33.432	0.000	none	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	varying	1850 cycled
		r4i1p14	893
		r6i1p14	953
historicalMisc	sulfate direct effect only	r1i1p15	937	1360.895	287.725	790.979	275.425	33.432	0.000	none	1850 cycled	1850 cycled	varying	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled
historicalMisc	solar forcing only	r1i1p16	937	varying	287.725	790.979	275.425	33.432	0.000	none	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled
		r4i1p16	893
		r6i1p16	953
historicalMisc	volcanic forcing only	r1i1p17	937	1360.895	287.725	790.979	275.425	33.432	0.000	varying	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled	1850 cycled
		r4i1p17	893
		r6i1p17	953