Measurements of shortwave and longwave components of the radiation budget were made above and below tropical forest in the Amazon Basin for a total duration of 203 hours in September 1983. Albedo was (12.25±0.2)%, and showed a small variation with solar altitude. The net outward flux of longwave radiation was around 30 W m−2, and fairly constant over the day. The relationship between net radiation, R, and solar radiation, S, was adequately described by the expression R = (0.858±0.006)S ‐ (35.0±1.9) (W m−2). The fraction of solar radiation reaching the bottom of the canopy was low, about one per cent: net radiation in this position was consistent with low soil heat flux and low soil evaporation.
|Original language||English (US)|
|Number of pages||7|
|Journal||Quarterly Journal of the Royal Meteorological Society|
|State||Published - 1984|
ASJC Scopus subject areas
- Atmospheric Science