# Horizontal Infrared

![](https://3405893330-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9gBkJelXEQ5LsYEl7%2Fuploads%2Fgit-blob-704d7e823aae1b2bfb2bc9a2d1ace517c2adda05%2FHorizontal_Infrared.png?alt=media)

![](https://3405893330-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9gBkJelXEQ5LsYEl7%2Fuploads%2Fgit-blob-e9c9ae773eefae9fc5de4a8d01270b92a7a91723%2FHorizontal_Infrared.png?alt=media) - [\[source code\]](https://github.com/ladybug-tools/dragonfly-grasshopper/blob/master/dragonfly_grasshopper/src/DF%20Horizontal%20Infrared.py)

Calculate downwelling horizontal infrared radiation intensity from sky cover, dry bulb temperature, and dew point temperature.

## Inputs

* **sky\_cover \[Required]**

  A value or data collection representing sky cover \[tenths]&#x20;
* **dry\_bulb \[Required]**

  A value or data collection representing  dry bulb temperature \[C]&#x20;
* **dew\_point \[Required]**

  A value or data collection representing dew point temperature \[C]&#x20;

## Outputs

* **horiz\_infrared**

  A data collection or value indicating the downwelling horizontal infrared radiation \[W/m2]&#x20;