Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
remark_1_flux [2012/07/07 01:02] – 134.93.180.188 | remark_1_flux [2017/11/10 09:09] (current) – external edit 127.0.0.1 | ||
---|---|---|---|
Line 13: | Line 13: | ||
So, we get for the longwave radiation from the **free sky ('' | So, we get for the longwave radiation from the **free sky ('' | ||
- | LW_free= trans_plant*LW_sky+ (1-trans_plant)*LW_plant\\ | + | LW_free= trans_plant*LW_sky+ (1-trans_plant)*LW_plant |
where '' | where '' | ||
For the **obstructed sky '' | For the **obstructed sky '' | ||
- | | + | LW_obst= max(q_lw_envi, |
- | where '' | + | where '' |
Finally, the total incoming longwave radiation is weighted between '' | Finally, the total incoming longwave radiation is weighted between '' | ||
- | | + | LW_total= SVF*LW_free+(1-SVF)*LW_obst |
The values found in the receptor files for radiation coming from the vegetation, the sky and from the environment are based on this calculation for the selected surface: | The values found in the receptor files for radiation coming from the vegetation, the sky and from the environment are based on this calculation for the selected surface: | ||
- | | + | from vegetation = SVF*(1-trans_plant)*LW_plant |
- | from sky=SVF*trans_plant*LW_sky | + | from sky=SVF*trans_plant*LW_sky |
- | from environment= (1-SVF)*max(q_lw_envi, | + | from environment= (1-SVF)*max(q_lw_envi, |
They are **NOT** the total amount of longwave radiation **emitted** (e.g. from the plants) but the amount of radiation **reaching** the surface of interest! | They are **NOT** the total amount of longwave radiation **emitted** (e.g. from the plants) but the amount of radiation **reaching** the surface of interest! | ||