TY - JOUR
T1 - Observations of radiation exchange above and below Amazonian forest
AU - Shuttleworth, W. James
PY - 1984/10
Y1 - 1984/10
N2 - 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.
AB - 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.
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U2 - 10.1002/qj.49711046623
DO - 10.1002/qj.49711046623
M3 - Article
AN - SCOPUS:84983971057
SN - 0035-9009
VL - 110
SP - 1163
EP - 1169
JO - Quarterly Journal of the Royal Meteorological Society
JF - Quarterly Journal of the Royal Meteorological Society
IS - 466
ER -