Abstract
A model of radiation transmission through tree canopies was developed to estimate erythemal ultraviolet (UV)-B irradiance below vegetation canopies in the Baltimore, Maryland area under variable cloud conditions and tree cover. The model developed assesses the UV-B irradiance at a point below a canopy given sky conditions and a canopy consisting of a finite number of ellipsoidal crowns that act as discrete scattering volumes. The UV-B protection factors for the tree canopies in Baltimore were on average 2.0 for the entire area under tree canopies and 4.0 for shaded areas. The UV-B protection afforded by tree canopies under partly cloudy skies was found to be similar to that for clear sky days except for zenith angle greater than 45°.
| Original language | English |
|---|---|
| Pages | 63-69 |
| Number of pages | 7 |
| State | Published - 2004 |
| Externally published | Yes |
| Event | 16th Conference on Biometeorology and Aerobiology - Vancouver, BC, Canada Duration: 23 Aug 2004 → 26 Aug 2004 |
Conference
| Conference | 16th Conference on Biometeorology and Aerobiology |
|---|---|
| Country/Territory | Canada |
| City | Vancouver, BC |
| Period | 23/08/04 → 26/08/04 |