longwave.conductance {bigleaf} | R Documentation |

## Longwave Radiative Transfer Conductance of the Canopy

### Description

Longwave Radiative Transfer Conductance of the Canopy

### Usage

```
longwave.conductance(Tair, LAI, constants = bigleaf.constants())
```

### Arguments

`Tair` |
Air temperature (deg C) |

`LAI` |
Leaf area index (m2 m-2) |

`constants` |
Kelvin - conversion degree Celsius to Kelvin |

### Details

the following formula is used (Martin, 1989):

`Gr = 4 \sigma Tair^3 LAI / cp`

### Value

`Gr -` |
longwave radiative transfer conductance of the canopy (m s-1) |

### References

Martin P., 1989: The significance of radiative coupling between vegetation and the atmosphere. Agricultural and Forest Meteorology 49, 45-53.

### Examples

```
longwave.conductance(25,seq(1,8,1))
```

[Package

*bigleaf*version 0.8.2 Index]