These identifiers specify forcing values that can be provided by hector via
one of the myriad halocarbon components. All of the values corresponding to
these identifiers are read-only (*i.e.*, they can only appear in
`GETDATA`

messages.) The forcings returned are the
*relative* forcings, with the base year (typically 1750) values
subtracted off.

## Usage

```
RF_CF4()
RF_C2F6()
RF_HFC23()
RF_HFC32()
RF_HFC4310()
RF_HFC125()
RF_HFC134A()
RF_HFC143A()
RF_HFC227EA()
RF_HFC245FA()
RF_SF6()
RF_CFC11()
RF_CFC12()
RF_CFC113()
RF_CFC114()
RF_CFC115()
RF_CCL4()
RF_CH3CCL3()
RF_HCFC22()
RF_HCFC141B()
RF_HCFC142B()
RF_HALON1211()
RF_HALON1301()
RF_HALON2402()
RF_CH3CL()
RF_CH3BR()
```

## Functions

`RF_CF4()`

: Radiative forcing due to CF4`RF_C2F6()`

: Radiative forcing due to C2F6`RF_HFC23()`

: Radiative forcing due to HFC-23`RF_HFC32()`

: Radiative forcing due to HFC-32`RF_HFC4310()`

: Radiative forcing due to HFC-4310`RF_HFC125()`

: Radiative forcing due to HFC-125`RF_HFC134A()`

: Radiative forcing due to HFC-134a`RF_HFC143A()`

: Radiative forcing due to HFC-143a`RF_HFC227EA()`

: Radiative forcing due to HFC227ea`RF_HFC245FA()`

: Radiative forcing due to HFC-245fa`RF_SF6()`

: Radiative forcing due to sulfur hexafluoride`RF_CFC11()`

: Radiative forcing due to CFC-11`RF_CFC12()`

: Radiative forcing due to CFC-12`RF_CFC113()`

: Radiative forcing due to CFC-113`RF_CFC114()`

: Radiative forcing due to CFC-114`RF_CFC115()`

: Radiative forcing due to CFC-115`RF_CCL4()`

: Radiative forcing due to carbon tetrachloride`RF_CH3CCL3()`

: Radiative forcing due to trichloroethane`RF_HCFC22()`

: Radiative forcing due to HCFC-22`RF_HCFC141B()`

: Radiative forcing due to HCFC-141b`RF_HCFC142B()`

: Radiative forcing due to HCCFC-142b`RF_HALON1211()`

: Radiative forcing due to halon-1211`RF_HALON1301()`

: Radiative forcing due to halon-1301`RF_HALON2402()`

: Radiative forcing due to halon-2402`RF_CH3CL()`

: Radiative forcing due to chloromethane`RF_CH3BR()`

: Radiative forcing due to bromomethane

## Note

Because these identifiers are provided as `#define`

macros in the hector code,
these identifiers are provided in the R interface as functions. Therefore,
these objects must be called to use them; *e.g.*, `GETDATA()`

instead of the more natural looking `GETDATA`

.

## See also

forcings for forcings from other sources.

Other capability identifiers:
`CF4_CONSTRAIN()`

,
`CONCENTRATIONS_CH4()`

,
`CONCENTRATIONS_N2O()`

,
`DELTA_CO2()`

,
`EMISSIONS_BC()`

,
`EMISSIONS_CF4()`

,
`EMISSIONS_SO2()`

,
`FTOT_CONSTRAIN()`

,
`GLOBAL_TAS()`

,
`NBP()`

,
`OCEAN_UPTAKE()`

,
`RF_TOTAL()`

,
`RHO_BC()`

,
`TRACKING_DATE()`